{"timestamp": "2026-11-09 23:58:49", "data": {"options": [{"option": "GRND261120C00004000", "bid": 8.4, "bid_size": 84.0, "ask": 10.5, "ask_size": 17.0, "iv": 3.5108, "open_interest": 0.0, "volume": 0.0, "delta": 0.9882, "gamma": 0.0039, "vega": 0.0008, "theta": -0.0104, "rho": 0.0014, "theo": 9.4573, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 10.0}, {"option": "GRND261120P00004000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 394.0, "iv": 5.7866, "open_interest": 0.0, "volume": 0.0, "delta": -0.0126, "gamma": 0.0039, "vega": 0.0008, "theta": -0.0115, "rho": -0.0001, "theo": 0.0448, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261120C00005000", "bid": 7.4, "bid_size": 75.0, "ask": 9.5, "ask_size": 17.0, "iv": 2.8806, "open_interest": 5.0, "volume": 0.0, "delta": 0.9849, "gamma": 0.0057, "vega": 0.0009, "theta": -0.0107, "rho": 0.0017, "theo": 8.4607, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 5.3, "last_trade_time": "2026-06-09T15:45:19", "percent_change": 0.0, "prev_day_close": 8.75}, {"option": "GRND261120P00005000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 526.0, "iv": 4.8107, "open_interest": 0.0, "volume": 0.0, "delta": -0.0159, "gamma": 0.0057, "vega": 0.0009, "theta": -0.0117, "rho": -0.0001, "theo": 0.0466, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261120C00006000", "bid": 6.4, "bid_size": 76.0, "ask": 8.4, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.9808, "gamma": 0.0082, "vega": 0.0011, "theta": -0.0111, "rho": 0.002, "theo": 7.4648, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.69999980926514}, {"option": "GRND261120P00006000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 521.0, "iv": 4.0351, "open_interest": 0.0, "volume": 0.0, "delta": -0.02, "gamma": 0.0082, "vega": 0.0011, "theta": -0.012, "rho": -0.0001, "theo": 0.0492, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261120C00007000", "bid": 5.5, "bid_size": 84.0, "ask": 7.5, "ask_size": 16.0, "iv": 2.3042, "open_interest": 0.0, "volume": 0.0, "delta": 0.9753, "gamma": 0.012, "vega": 0.0014, "theta": -0.0117, "rho": 0.0024, "theo": 6.4703, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 6.75}, {"option": "GRND261120P00007000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 484.0, "iv": 3.3883, "open_interest": 0.0, "volume": 0.0, "delta": -0.0256, "gamma": 0.0121, "vega": 0.0014, "theta": -0.0124, "rho": -0.0001, "theo": 0.053, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261120C00008000", "bid": 4.6, "bid_size": 100.0, "ask": 6.2, "ask_size": 12.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.9676, "gamma": 0.018, "vega": 0.0017, "theta": -0.0124, "rho": 0.0027, "theo": 5.4776, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 5.5}, {"option": "GRND261120P00008000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 358.0, "iv": 2.8294, "open_interest": 376.0, "volume": 0.0, "delta": -0.0333, "gamma": 0.018, "vega": 0.0017, "theta": -0.013, "rho": -0.0002, "theo": 0.0588, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.05, "last_trade_time": "2026-09-24T09:30:02", "percent_change": 0.0, "prev_day_close": 1.07500004768372}, {"option": "GRND261120C00009000", "bid": 3.6, "bid_size": 100.0, "ask": 5.0, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.9559, "gamma": 0.0277, "vega": 0.0022, "theta": -0.0134, "rho": 0.003, "theo": 4.4881, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 4.50000011920929}, {"option": "GRND261120P00009000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 142.0, "iv": 2.3325, "open_interest": 25.0, "volume": 0.0, "delta": -0.045, "gamma": 0.0278, "vega": 0.0022, "theta": -0.0139, "rho": -0.0002, "theo": 0.0677, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.05, "last_trade_time": "2026-09-22T14:09:12", "percent_change": 0.0, "prev_day_close": 0.774999976158142}, {"option": "GRND261120C00010000", "bid": 2.8, "bid_size": 225.0, "ask": 4.0, "ask_size": 93.0, "iv": 0.0, "open_interest": 111.0, "volume": 0.0, "delta": 0.937, "gamma": 0.045, "vega": 0.0029, "theta": -0.0147, "rho": 0.0032, "theo": 3.504, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 3.91, "last_trade_time": "2026-11-05T09:54:48", "percent_change": 0.0, "prev_day_close": 3.54999995231628}, {"option": "GRND261120P00010000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 206.0, "iv": 1.8795, "open_interest": 23.0, "volume": 0.0, "delta": -0.064, "gamma": 0.0451, "vega": 0.0029, "theta": -0.0152, "rho": -0.0003, "theo": 0.082, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.05, "last_trade_time": "2026-11-06T10:04:52", "percent_change": 0.0, "prev_day_close": 0.150000005960464}, {"option": "GRND261120C00011000", "bid": 1.25, "bid_size": 92.0, "ask": 2.9, "ask_size": 19.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.9027, "gamma": 0.0785, "vega": 0.004, "theta": -0.0166, "rho": 0.0034, "theo": 2.531, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.62500005960464}, {"option": "GRND261120P00011000", "bid": 0.0, "bid_size": 0.0, "ask": 0.3, "ask_size": 265.0, "iv": 1.0418, "open_interest": 234.0, "volume": 2.0, "delta": -0.0984, "gamma": 0.0788, "vega": 0.004, "theta": -0.017, "rho": -0.0004, "theo": 0.1076, "change": -0.05, "open": 0.05, "high": 0.05, "low": 0.05, "tick": "down", "last_trade_price": 0.05, "last_trade_time": "2026-11-09T09:30:04", "percent_change": -50.0, "prev_day_close": 0.100000003352761}, {"option": "GRND261120C00012000", "bid": 1.4, "bid_size": 17.0, "ask": 1.65, "ask_size": 13.0, "iv": 0.6106, "open_interest": 54.0, "volume": 0.0, "delta": 0.8304, "gamma": 0.15, "vega": 0.0059, "theta": -0.0192, "rho": 0.0034, "theo": 1.5863, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 2.8, "last_trade_time": "2026-10-01T14:15:24", "percent_change": 0.0, "prev_day_close": 2.10000002384186}, {"option": "GRND261120P00012000", "bid": 0.05, "bid_size": 6.0, "ask": 0.2, "ask_size": 237.0, "iv": 0.658, "open_interest": 185.0, "volume": 2.0, "delta": -0.1712, "gamma": 0.1508, "vega": 0.0059, "theta": -0.0194, "rho": -0.0008, "theo": 0.1617, "change": -0.025, "open": 0.2, "high": 0.2, "low": 0.15, "tick": "down", "last_trade_price": 0.15, "last_trade_time": "2026-11-09T15:15:19", "percent_change": -14.2857, "prev_day_close": 0.175000006332994}, {"option": "GRND261120C00013000", "bid": 0.6, "bid_size": 178.0, "ask": 1.7, "ask_size": 141.0, "iv": 0.4682, "open_interest": 104.0, "volume": 10.0, "delta": 0.6499, "gamma": 0.2873, "vega": 0.0086, "theta": -0.022, "rho": 0.0028, "theo": 0.7469, "change": -0.575, "open": 0.6, "high": 0.6, "low": 0.6, "tick": "down", "last_trade_price": 0.6, "last_trade_time": "2026-11-09T10:19:09", "percent_change": -48.9362, "prev_day_close": 1.17500001192093}, {"option": "GRND261120P00013000", "bid": 0.15, "bid_size": 347.0, "ask": 0.45, "ask_size": 280.0, "iv": 0.5269, "open_interest": 114.0, "volume": 21.0, "delta": -0.3533, "gamma": 0.2895, "vega": 0.0087, "theta": -0.0222, "rho": -0.0014, "theo": 0.322, "change": 0.125, "open": 0.5, "high": 0.5, "low": 0.5, "tick": "no_change", "last_trade_price": 0.5, "last_trade_time": "2026-11-09T10:51:17", "percent_change": 33.3333, "prev_day_close": 0.375000007450581}, {"option": "GRND261120C00014000", "bid": 0.0, "bid_size": 0.0, "ask": 0.45, "ask_size": 68.0, "iv": 0.4792, "open_interest": 528.0, "volume": 0.0, "delta": 0.3468, "gamma": 0.2929, "vega": 0.0086, "theta": -0.0214, "rho": 0.0016, "theo": 0.2759, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.7, "last_trade_time": "2026-11-06T14:30:31", "percent_change": 0.0, "prev_day_close": 0.575000002980232}, {"option": "GRND261120P00014000", "bid": 0.55, "bid_size": 313.0, "ask": 1.4, "ask_size": 347.0, "iv": 0.6791, "open_interest": 379.0, "volume": 0.0, "delta": -0.6592, "gamma": 0.2959, "vega": 0.0085, "theta": -0.0215, "rho": -0.0024, "theo": 0.8533, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.82, "last_trade_time": "2026-11-06T15:51:38", "percent_change": 0.0, "prev_day_close": 0.775000005960464}, {"option": "GRND261120C00015000", "bid": 0.0, "bid_size": 0.0, "ask": 0.3, "ask_size": 232.0, "iv": 0.6693, "open_interest": 2305.0, "volume": 107.0, "delta": 0.1762, "gamma": 0.1725, "vega": 0.006, "theta": -0.0174, "rho": 0.0008, "theo": 0.1331, "change": -0.25, "open": 0.1, "high": 0.1, "low": 0.05, "tick": "up", "last_trade_price": 0.1, "last_trade_time": "2026-11-09T13:43:54", "percent_change": -71.4286, "prev_day_close": 0.350000008940697}, {"option": "GRND261120P00015000", "bid": 1.4, "bid_size": 63.0, "ask": 2.1, "ask_size": 113.0, "iv": 0.7017, "open_interest": 63.0, "volume": 9.0, "delta": -0.8308, "gamma": 0.1756, "vega": 0.0059, "theta": -0.0175, "rho": -0.0027, "theo": 1.7134, "change": 0.425, "open": 1.85, "high": 1.85, "low": 1.85, "tick": "no_change", "last_trade_price": 1.85, "last_trade_time": "2026-11-09T11:49:24", "percent_change": 29.8246, "prev_day_close": 1.42499998211861}, {"option": "GRND261120C00016000", "bid": 0.0, "bid_size": 0.0, "ask": 0.1, "ask_size": 68.0, "iv": 0.6731, "open_interest": 285.0, "volume": 3.0, "delta": 0.1025, "gamma": 0.1015, "vega": 0.0042, "theta": -0.0137, "rho": 0.0004, "theo": 0.0791, "change": -0.175, "open": 0.09, "high": 0.09, "low": 0.05, "tick": "down", "last_trade_price": 0.05, "last_trade_time": "2026-11-09T14:54:04", "percent_change": -77.7778, "prev_day_close": 0.225000008940697}, {"option": "GRND261120P00016000", "bid": 2.2, "bid_size": 45.0, "ask": 3.4, "ask_size": 71.0, "iv": 1.0225, "open_interest": 13.0, "volume": 0.0, "delta": -0.905, "gamma": 0.1044, "vega": 0.0039, "theta": -0.0138, "rho": -0.0026, "theo": 2.6619, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 3.13, "last_trade_time": "2026-11-06T10:07:07", "percent_change": 0.0, "prev_day_close": 2.25000005960464}, {"option": "GRND261120C00017000", "bid": 0.0, "bid_size": 0.0, "ask": 0.15, "ask_size": 264.0, "iv": 0.9224, "open_interest": 3496.0, "volume": 11.0, "delta": 0.0654, "gamma": 0.0639, "vega": 0.003, "theta": -0.0108, "rho": 0.0003, "theo": 0.0521, "change": -0.07, "open": 0.05, "high": 0.08, "low": 0.05, "tick": "up", "last_trade_price": 0.08, "last_trade_time": "2026-11-09T13:21:38", "percent_change": -46.6667, "prev_day_close": 0.150000000372529}, {"option": "GRND261120P00017000", "bid": 3.1, "bid_size": 91.0, "ask": 4.4, "ask_size": 71.0, "iv": 1.1418, "open_interest": 15.0, "volume": 0.0, "delta": -0.9424, "gamma": 0.0662, "vega": 0.0026, "theta": -0.0109, "rho": -0.0022, "theo": 3.6369, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 2.74, "last_trade_time": "2026-10-16T12:24:51", "percent_change": 0.0, "prev_day_close": 3.55000007152557}, {"option": "GRND261120C00018000", "bid": 0.0, "bid_size": 0.0, "ask": 0.1, "ask_size": 1.0, "iv": 0.9983, "open_interest": 73.0, "volume": 0.0, "delta": 0.0445, "gamma": 0.0425, "vega": 0.0022, "theta": -0.0086, "rho": 0.0002, "theo": 0.0364, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.1, "last_trade_time": "2026-10-30T13:12:29", "percent_change": 0.0, "prev_day_close": 0.774999976158142}, {"option": "GRND261120P00018000", "bid": 4.1, "bid_size": 91.0, "ask": 5.6, "ask_size": 71.0, "iv": 1.5184, "open_interest": 1.0, "volume": 0.0, "delta": -0.9635, "gamma": 0.0448, "vega": 0.0018, "theta": -0.0086, "rho": -0.002, "theo": 4.6232, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 3.6, "last_trade_time": "2026-10-16T12:24:32", "percent_change": 0.0, "prev_day_close": 4.5}, {"option": "GRND261120C00019000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 169.0, "iv": 1.8704, "open_interest": 103.0, "volume": 0.0, "delta": 0.0315, "gamma": 0.0296, "vega": 0.0016, "theta": -0.007, "rho": 0.0001, "theo": 0.0264, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.1, "last_trade_time": "2026-11-05T15:59:49", "percent_change": 0.0, "prev_day_close": 1.07500004768372}, {"option": "GRND261120P00019000", "bid": 5.1, "bid_size": 91.0, "ask": 6.5, "ask_size": 68.0, "iv": 1.5996, "open_interest": 1.0, "volume": 0.0, "delta": -0.9766, "gamma": 0.0319, "vega": 0.0013, "theta": -0.0068, "rho": -0.0017, "theo": 5.6151, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 3.8, "last_trade_time": "2026-09-30T14:51:12", "percent_change": 0.0, "prev_day_close": 5.40000009536743}, {"option": "GRND261120C00020000", "bid": 0.0, "bid_size": 0.0, "ask": 0.3, "ask_size": 56.0, "iv": 1.5917, "open_interest": 185.0, "volume": 10.0, "delta": 0.0231, "gamma": 0.0213, "vega": 0.0013, "theta": -0.0056, "rho": 0.0001, "theo": 0.0197, "change": 0.0, "open": 0.05, "high": 0.05, "low": 0.05, "tick": "no_change", "last_trade_price": 0.05, "last_trade_time": "2026-11-09T14:09:49", "percent_change": -1.49012e-06, "prev_day_close": 0.0500000007450581}, {"option": "GRND261120P00020000", "bid": 6.0, "bid_size": 84.0, "ask": 7.4, "ask_size": 56.0, "iv": 1.5132, "open_interest": 0.0, "volume": 0.0, "delta": -0.9854, "gamma": 0.0238, "vega": 0.0008, "theta": -0.0051, "rho": -0.0013, "theo": 6.6103, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 6.8, "last_trade_time": "2026-04-20T14:06:56", "percent_change": 0.0, "prev_day_close": 6.54999995231628}, {"option": "GRND261120C00021000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 436.0, "iv": 2.1964, "open_interest": 5.0, "volume": 0.0, "delta": 0.0173, "gamma": 0.0157, "vega": 0.001, "theta": -0.0046, "rho": 0.0001, "theo": 0.015, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.04, "last_trade_time": "2026-09-15T10:07:44", "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261120P00021000", "bid": 7.0, "bid_size": 84.0, "ask": 8.4, "ask_size": 56.0, "iv": 1.649, "open_interest": 0.0, "volume": 0.0, "delta": -0.9912, "gamma": 0.0168, "vega": 0.0005, "theta": -0.0041, "rho": -0.0008, "theo": 7.6076, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 7.89, "last_trade_time": "2026-04-20T14:07:24", "percent_change": 0.0, "prev_day_close": 7.5499997138977}, {"option": "GRND261120C00022000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 394.0, "iv": 2.3417, "open_interest": 13.0, "volume": 0.0, "delta": 0.0132, "gamma": 0.0119, "vega": 0.0008, "theta": -0.0038, "rho": 0.0001, "theo": 0.0117, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.01, "last_trade_time": "2026-08-19T11:16:04", "percent_change": 0.0, "prev_day_close": 0.474999994039536}, {"option": "GRND261120P00022000", "bid": 8.0, "bid_size": 84.0, "ask": 9.4, "ask_size": 56.0, "iv": 1.7761, "open_interest": 0.0, "volume": 0.0, "delta": -0.9951, "gamma": 0.0114, "vega": 0.0003, "theta": -0.0031, "rho": -0.0007, "theo": 8.606, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 8.64999985694885}, {"option": "GRND261120C00023000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 373.0, "iv": 2.4774, "open_interest": 1.0, "volume": 0.0, "delta": 0.0103, "gamma": 0.0091, "vega": 0.0006, "theta": -0.0031, "rho": 0.0, "theo": 0.0092, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.1, "last_trade_time": "2026-08-19T09:30:03", "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261120P00023000", "bid": 9.0, "bid_size": 84.0, "ask": 10.4, "ask_size": 56.0, "iv": 1.8954, "open_interest": 0.0, "volume": 0.0, "delta": -0.9974, "gamma": 0.0068, "vega": 0.0001, "theta": -0.0027, "rho": -0.0002, "theo": 9.6054, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 9.64999961853027}, {"option": "GRND261120C00024000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 476.0, "iv": 2.6046, "open_interest": 0.0, "volume": 0.0, "delta": 0.0081, "gamma": 0.0071, "vega": 0.0005, "theta": -0.0026, "rho": 0.0, "theo": 0.0073, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261120P00024000", "bid": 10.0, "bid_size": 84.0, "ask": 11.5, "ask_size": 56.0, "iv": 2.1618, "open_interest": 0.0, "volume": 0.0, "delta": -0.9988, "gamma": 0.0036, "vega": 0.0001, "theta": -0.0025, "rho": -0.0002, "theo": 10.6051, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 10.5499997138977}, {"option": "GRND261120C00025000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 488.0, "iv": 2.7244, "open_interest": 127.0, "volume": 0.0, "delta": 0.0065, "gamma": 0.0056, "vega": 0.0004, "theta": -0.0022, "rho": 0.0, "theo": 0.0059, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.1, "last_trade_time": "2026-08-19T09:30:03", "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261120P00025000", "bid": 10.3, "bid_size": 53.0, "ask": 12.8, "ask_size": 56.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9995, "gamma": 0.0017, "vega": 0.0, "theta": -0.0024, "rho": 0.0, "theo": 11.605, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 11.6499996185303}, {"option": "GRND261218C00007000", "bid": 5.7, "bid_size": 84.0, "ask": 7.4, "ask_size": 8.0, "iv": 1.3901, "open_interest": 0.0, "volume": 0.0, "delta": 0.9545, "gamma": 0.0159, "vega": 0.0041, "theta": -0.0062, "rho": 0.0068, "theo": 6.5277, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 6.65000009536743}, {"option": "GRND261218P00007000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 123.0, "iv": 1.8036, "open_interest": 0.0, "volume": 0.0, "delta": -0.0441, "gamma": 0.0159, "vega": 0.0041, "theta": -0.0069, "rho": -0.0008, "theo": 0.1235, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261218C00008000", "bid": 4.6, "bid_size": 92.0, "ask": 6.2, "ask_size": 11.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.9415, "gamma": 0.023, "vega": 0.005, "theta": -0.0066, "rho": 0.0079, "theo": 5.547, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 5.90000009536743}, {"option": "GRND261218P00008000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 123.0, "iv": 1.5064, "open_interest": 0.0, "volume": 0.0, "delta": -0.057, "gamma": 0.023, "vega": 0.005, "theta": -0.0072, "rho": -0.0009, "theo": 0.1379, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.07500004768372}, {"option": "GRND261218C00009000", "bid": 3.8, "bid_size": 100.0, "ask": 5.2, "ask_size": 17.0, "iv": 0.8194, "open_interest": 0.0, "volume": 0.0, "delta": 0.9228, "gamma": 0.0339, "vega": 0.0062, "theta": -0.0071, "rho": 0.0087, "theo": 4.5734, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 4.60000002384186}, {"option": "GRND261218P00009000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 134.0, "iv": 1.2422, "open_interest": 0.0, "volume": 0.0, "delta": -0.0757, "gamma": 0.034, "vega": 0.0062, "theta": -0.0075, "rho": -0.0012, "theo": 0.1594, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.474999994039536}, {"option": "GRND261218C00010000", "bid": 2.7, "bid_size": 100.0, "ask": 4.3, "ask_size": 14.0, "iv": 0.631, "open_interest": 0.0, "volume": 0.0, "delta": 0.8941, "gamma": 0.0515, "vega": 0.0079, "theta": -0.0077, "rho": 0.0094, "theo": 3.6124, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 3.59999990463257}, {"option": "GRND261218P00010000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 1.0013, "open_interest": 0.0, "volume": 0.0, "delta": -0.1046, "gamma": 0.0516, "vega": 0.008, "theta": -0.008, "rho": -0.0016, "theo": 0.1935, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.10000002384186}, {"option": "GRND261218C00011000", "bid": 2.0, "bid_size": 91.0, "ask": 3.4, "ask_size": 18.0, "iv": 0.6863, "open_interest": 10.0, "volume": 0.0, "delta": 0.8464, "gamma": 0.0806, "vega": 0.0103, "theta": -0.0085, "rho": 0.0097, "theo": 2.6762, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 2.7, "last_trade_time": "2026-10-28T14:53:45", "percent_change": 0.0, "prev_day_close": 2.67500007152557}, {"option": "GRND261218P00011000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.7756, "open_interest": 0.0, "volume": 0.0, "delta": -0.1525, "gamma": 0.0809, "vega": 0.0103, "theta": -0.0087, "rho": -0.0023, "theo": 0.2524, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.14999997615814}, {"option": "GRND261218C00012000", "bid": 1.15, "bid_size": 107.0, "ask": 2.3, "ask_size": 13.0, "iv": 0.4975, "open_interest": 0.0, "volume": 0.0, "delta": 0.7611, "gamma": 0.1272, "vega": 0.0135, "theta": -0.0094, "rho": 0.0094, "theo": 1.7974, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.07499998807907}, {"option": "GRND261218P00012000", "bid": 0.05, "bid_size": 5.0, "ask": 0.75, "ask_size": 72.0, "iv": 0.5749, "open_interest": 0.0, "volume": 0.0, "delta": -0.2383, "gamma": 0.1278, "vega": 0.0136, "theta": -0.0096, "rho": -0.0035, "theo": 0.3692, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.35, "last_trade_time": "2026-10-19T09:37:33", "percent_change": 0.0, "prev_day_close": 0.299999997019768}, {"option": "GRND261218C00013000", "bid": 0.8, "bid_size": 236.0, "ask": 1.25, "ask_size": 61.0, "iv": 0.4601, "open_interest": 99.0, "volume": 0.0, "delta": 0.6122, "gamma": 0.1793, "vega": 0.0167, "theta": -0.0104, "rho": 0.008, "theo": 1.0662, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 1.45, "last_trade_time": "2026-11-06T13:42:05", "percent_change": 0.0, "prev_day_close": 1.39999997615814}, {"option": "GRND261218P00013000", "bid": 0.4, "bid_size": 50.0, "ask": 1.05, "ask_size": 258.0, "iv": 0.5387, "open_interest": 19.0, "volume": 0.0, "delta": -0.3884, "gamma": 0.1807, "vega": 0.0168, "theta": -0.0105, "rho": -0.0055, "theo": 0.6346, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.6, "last_trade_time": "2026-11-06T14:57:33", "percent_change": 0.0, "prev_day_close": 0.599999994039536}, {"option": "GRND261218C00014000", "bid": 0.45, "bid_size": 41.0, "ask": 0.85, "ask_size": 87.0, "iv": 0.5075, "open_interest": 23.0, "volume": 0.0, "delta": 0.429, "gamma": 0.1841, "vega": 0.0172, "theta": -0.0107, "rho": 0.0058, "theo": 0.6099, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.55, "last_trade_time": "2026-11-06T10:59:00", "percent_change": 0.0, "prev_day_close": 0.950000017881394}, {"option": "GRND261218P00014000", "bid": 0.85, "bid_size": 38.0, "ask": 1.65, "ask_size": 201.0, "iv": 0.5271, "open_interest": 0.0, "volume": 0.0, "delta": -0.5734, "gamma": 0.1864, "vega": 0.0171, "theta": -0.0107, "rho": -0.0078, "theo": 1.1764, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.949999988079071}, {"option": "GRND261218C00015000", "bid": 0.2, "bid_size": 113.0, "ask": 0.4, "ask_size": 41.0, "iv": 0.4691, "open_interest": 266.0, "volume": 2.0, "delta": 0.2915, "gamma": 0.148, "vega": 0.015, "theta": -0.0101, "rho": 0.0039, "theo": 0.3839, "change": -0.175, "open": 0.4, "high": 0.4, "low": 0.4, "tick": "down", "last_trade_price": 0.4, "last_trade_time": "2026-11-09T14:14:05", "percent_change": -30.4348, "prev_day_close": 0.575000002980232}, {"option": "GRND261218P00015000", "bid": 0.75, "bid_size": 195.0, "ask": 2.4, "ask_size": 129.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.7125, "gamma": 0.1506, "vega": 0.0149, "theta": -0.0101, "rho": -0.0091, "theo": 1.9498, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.25}, {"option": "GRND261218C00016000", "bid": 0.0, "bid_size": 0.0, "ask": 0.5, "ask_size": 113.0, "iv": 0.5665, "open_interest": 0.0, "volume": 0.0, "delta": 0.2058, "gamma": 0.1116, "vega": 0.0125, "theta": -0.0092, "rho": 0.0028, "theo": 0.2654, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.299999997019768}, {"option": "GRND261218P00016000", "bid": 2.3, "bid_size": 41.0, "ask": 3.5, "ask_size": 80.0, "iv": 0.6334, "open_interest": 0.0, "volume": 0.0, "delta": -0.7996, "gamma": 0.1144, "vega": 0.0122, "theta": -0.0092, "rho": -0.0098, "theo": 2.8315, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.67500007152557}, {"option": "GRND261218C00017000", "bid": 0.0, "bid_size": 0.0, "ask": 0.4, "ask_size": 54.0, "iv": 0.6354, "open_interest": 0.0, "volume": 0.0, "delta": 0.1514, "gamma": 0.0844, "vega": 0.0103, "theta": -0.0082, "rho": 0.002, "theo": 0.195, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.174999997019768}, {"option": "GRND261218P00017000", "bid": 3.2, "bid_size": 41.0, "ask": 4.4, "ask_size": 80.0, "iv": 0.6683, "open_interest": 0.0, "volume": 0.0, "delta": -0.855, "gamma": 0.0872, "vega": 0.0099, "theta": -0.0081, "rho": -0.0099, "theo": 3.7613, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 3.59999990463257}, {"option": "GRND261218C00018000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.895, "open_interest": 0.0, "volume": 0.0, "delta": 0.1151, "gamma": 0.065, "vega": 0.0085, "theta": -0.0072, "rho": 0.0015, "theo": 0.1489, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.04999995231628}, {"option": "GRND261218P00018000", "bid": 4.1, "bid_size": 92.0, "ask": 5.4, "ask_size": 80.0, "iv": 0.7187, "open_interest": 0.0, "volume": 0.0, "delta": -0.8922, "gamma": 0.0678, "vega": 0.008, "theta": -0.0071, "rho": -0.0096, "theo": 4.7159, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 4.54999995231628}, {"option": "GRND261218C00019000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 120.0, "iv": 0.9937, "open_interest": 0.0, "volume": 0.0, "delta": 0.0898, "gamma": 0.0509, "vega": 0.0071, "theta": -0.0064, "rho": 0.0012, "theo": 0.1168, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.07500004768372}, {"option": "GRND261218P00019000", "bid": 5.1, "bid_size": 92.0, "ask": 6.5, "ask_size": 78.0, "iv": 0.8665, "open_interest": 0.0, "volume": 0.0, "delta": -0.9183, "gamma": 0.0537, "vega": 0.0065, "theta": -0.0062, "rho": -0.0092, "theo": 5.6847, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 5.40000009536743}, {"option": "GRND261218C00020000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 112.0, "iv": 1.0839, "open_interest": 0.0, "volume": 0.0, "delta": 0.0715, "gamma": 0.0406, "vega": 0.006, "theta": -0.0057, "rho": 0.001, "theo": 0.0935, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.07500004768372}, {"option": "GRND261218P00020000", "bid": 5.9, "bid_size": 84.0, "ask": 7.4, "ask_size": 64.0, "iv": 0.7354, "open_interest": 0.0, "volume": 0.0, "delta": -0.9375, "gamma": 0.0436, "vega": 0.0053, "theta": -0.0054, "rho": -0.0086, "theo": 6.6625, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 6.65000009536743}, {"option": "GRND261218C00021000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 382.0, "iv": 1.1671, "open_interest": 0.0, "volume": 0.0, "delta": 0.0579, "gamma": 0.0329, "vega": 0.0051, "theta": -0.005, "rho": 0.0008, "theo": 0.0761, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.07500004768372}, {"option": "GRND261218P00021000", "bid": 6.9, "bid_size": 84.0, "ask": 8.5, "ask_size": 52.0, "iv": 0.9003, "open_interest": 0.0, "volume": 0.0, "delta": -0.9521, "gamma": 0.036, "vega": 0.0042, "theta": -0.0048, "rho": -0.0078, "theo": 7.6463, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.5499997138977}, {"option": "GRND261218C00022000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 395.0, "iv": 1.2444, "open_interest": 0.0, "volume": 0.0, "delta": 0.0474, "gamma": 0.027, "vega": 0.0043, "theta": -0.0044, "rho": 0.0006, "theo": 0.0626, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261218P00022000", "bid": 7.9, "bid_size": 84.0, "ask": 9.5, "ask_size": 54.0, "iv": 0.9707, "open_interest": 0.0, "volume": 0.0, "delta": -0.9634, "gamma": 0.0302, "vega": 0.0034, "theta": -0.0042, "rho": -0.0073, "theo": 8.6345, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 8.5499997138977}, {"option": "GRND261218C00023000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 394.0, "iv": 1.3166, "open_interest": 0.0, "volume": 0.0, "delta": 0.0393, "gamma": 0.0223, "vega": 0.0037, "theta": -0.0039, "rho": 0.0005, "theo": 0.0521, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261218P00023000", "bid": 8.9, "bid_size": 84.0, "ask": 10.4, "ask_size": 51.0, "iv": 0.935, "open_interest": 0.0, "volume": 0.0, "delta": -0.9724, "gamma": 0.0256, "vega": 0.0026, "theta": -0.0036, "rho": -0.006, "theo": 9.6259, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 9.5499997138977}, {"option": "GRND261218C00024000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 381.0, "iv": 1.3842, "open_interest": 0.0, "volume": 0.0, "delta": 0.0329, "gamma": 0.0187, "vega": 0.0032, "theta": -0.0035, "rho": 0.0004, "theo": 0.0437, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "GRND261218P00024000", "bid": 9.9, "bid_size": 84.0, "ask": 11.4, "ask_size": 56.0, "iv": 0.9943, "open_interest": 0.0, "volume": 0.0, "delta": -0.9799, "gamma": 0.0228, "vega": 0.002, "theta": -0.0031, "rho": -0.0051, "theo": 10.6196, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 10.5499997138977}, {"option": "GRND261218C00025000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 373.0, "iv": 1.4479, "open_interest": 0.0, "volume": 0.0, "delta": 0.0278, "gamma": 0.0158, "vega": 0.0028, "theta": -0.0031, "rho": 0.0004, "theo": 0.037, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND261218P00025000", "bid": 10.5, "bid_size": 84.0, "ask": 12.9, "ask_size": 54.0, "iv": 1.1589, "open_interest": 0.0, "volume": 0.0, "delta": -0.9857, "gamma": 0.0195, "vega": 0.0015, "theta": -0.0028, "rho": -0.0038, "theo": 11.6152, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 11.5999999046326}, {"option": "GRND270115C00003000", "bid": 8.4, "bid_size": 40.0, "ask": 12.0, "ask_size": 20.0, "iv": 0.0, "open_interest": 6.0, "volume": 0.0, "delta": 0.986, "gamma": 0.0032, "vega": 0.0021, "theta": -0.0018, "rho": 0.0052, "theo": 10.5009, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 8.61, "last_trade_time": "2026-06-10T09:55:20", "percent_change": 0.0, "prev_day_close": 10.9000000953674}, {"option": "GRND270115P00003000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 470.0, "iv": 2.8946, "open_interest": 0.0, "volume": 0.0, "delta": -0.0142, "gamma": 0.0032, "vega": 0.0021, "theta": -0.003, "rho": -0.0005, "theo": 0.0766, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270115C00005000", "bid": 6.4, "bid_size": 101.0, "ask": 9.9, "ask_size": 66.0, "iv": 0.0, "open_interest": 69.0, "volume": 0.0, "delta": 0.9757, "gamma": 0.0072, "vega": 0.0033, "theta": -0.0024, "rho": 0.0087, "theo": 8.5322, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 9.32, "last_trade_time": "2026-10-21T13:04:40", "percent_change": 0.0, "prev_day_close": 8.89999985694885}, {"option": "GRND270115P00005000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 450.0, "iv": 1.9614, "open_interest": 1.0, "volume": 0.0, "delta": -0.0246, "gamma": 0.0072, "vega": 0.0033, "theta": -0.0034, "rho": -0.0008, "theo": 0.0905, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.2, "last_trade_time": "2026-02-02T15:57:11", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270115C00006000", "bid": 6.7, "bid_size": 84.0, "ask": 8.3, "ask_size": 15.0, "iv": 1.03, "open_interest": 0.0, "volume": 0.0, "delta": 0.9683, "gamma": 0.0105, "vega": 0.0041, "theta": -0.0027, "rho": 0.0104, "theo": 7.5513, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.69999980926514}, {"option": "GRND270115P00006000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 446.0, "iv": 1.6466, "open_interest": 0.0, "volume": 0.0, "delta": -0.032, "gamma": 0.0106, "vega": 0.0041, "theta": -0.0036, "rho": -0.0009, "theo": 0.1008, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.0}, {"option": "GRND270115C00007000", "bid": 5.7, "bid_size": 84.0, "ask": 7.2, "ask_size": 8.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.9583, "gamma": 0.0154, "vega": 0.0051, "theta": -0.0031, "rho": 0.012, "theo": 6.5746, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 6.70000004768372}, {"option": "GRND270115P00007000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 139.0, "iv": 1.3847, "open_interest": 0.0, "volume": 0.0, "delta": -0.042, "gamma": 0.0154, "vega": 0.0052, "theta": -0.0038, "rho": -0.0012, "theo": 0.1154, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.474999994039536}, {"option": "GRND270115C00008000", "bid": 4.7, "bid_size": 37.0, "ask": 6.2, "ask_size": 33.0, "iv": 0.0, "open_interest": 16.0, "volume": 0.0, "delta": 0.9442, "gamma": 0.0226, "vega": 0.0065, "theta": -0.0035, "rho": 0.0135, "theo": 5.6044, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 8.0, "last_trade_time": "2026-08-17T11:16:42", "percent_change": 0.0, "prev_day_close": 5.65000009536743}, {"option": "GRND270115P00008000", "bid": 0.0, "bid_size": 0.0, "ask": 0.4, "ask_size": 59.0, "iv": 0.959, "open_interest": 25.0, "volume": 0.0, "delta": -0.0563, "gamma": 0.0227, "vega": 0.0065, "theta": -0.0042, "rho": -0.0016, "theo": 0.1367, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.51, "last_trade_time": "2026-06-09T15:48:19", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270115C00009000", "bid": 3.7, "bid_size": 26.0, "ask": 5.3, "ask_size": 10.0, "iv": 0.4911, "open_interest": 0.0, "volume": 0.0, "delta": 0.9231, "gamma": 0.0336, "vega": 0.0083, "theta": -0.0041, "rho": 0.0148, "theo": 4.645, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 4.64999997615814}, {"option": "GRND270115P00009000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 180.0, "iv": 0.9566, "open_interest": 37.0, "volume": 0.0, "delta": -0.0775, "gamma": 0.0338, "vega": 0.0084, "theta": -0.0046, "rho": -0.0021, "theo": 0.1688, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.65, "last_trade_time": "2026-06-11T12:24:54", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270115C00010000", "bid": 2.8, "bid_size": 60.0, "ask": 4.5, "ask_size": 38.0, "iv": 0.5892, "open_interest": 56.0, "volume": 0.0, "delta": 0.8902, "gamma": 0.0507, "vega": 0.0108, "theta": -0.0047, "rho": 0.0158, "theo": 3.7048, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 6.45, "last_trade_time": "2026-09-22T09:54:17", "percent_change": 0.0, "prev_day_close": 3.75}, {"option": "GRND270115P00010000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.773, "open_interest": 18.0, "volume": 0.0, "delta": -0.1107, "gamma": 0.0511, "vega": 0.0109, "theta": -0.0052, "rho": -0.0029, "theo": 0.2203, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.6, "last_trade_time": "2026-06-25T09:32:55", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270115C00011000", "bid": 2.1, "bid_size": 50.0, "ask": 3.2, "ask_size": 45.0, "iv": 0.4378, "open_interest": 0.0, "volume": 0.0, "delta": 0.8368, "gamma": 0.077, "vega": 0.0142, "theta": -0.0055, "rho": 0.0161, "theo": 2.8012, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.89999997615814}, {"option": "GRND270115P00011000", "bid": 0.1, "bid_size": 131.0, "ask": 0.35, "ask_size": 155.0, "iv": 0.4941, "open_interest": 79.0, "volume": 0.0, "delta": -0.1648, "gamma": 0.0778, "vega": 0.0143, "theta": -0.0059, "rho": -0.0043, "theo": 0.3087, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.23, "last_trade_time": "2026-11-06T11:30:58", "percent_change": 0.0, "prev_day_close": 0.275000005960464}, {"option": "GRND270115C00012000", "bid": 1.8, "bid_size": 52.0, "ask": 2.0, "ask_size": 37.0, "iv": 0.4491, "open_interest": 417.0, "volume": 13.0, "delta": 0.7489, "gamma": 0.1131, "vega": 0.0183, "theta": -0.0065, "rho": 0.0155, "theo": 1.9722, "change": -0.6, "open": 1.7, "high": 1.7, "low": 1.7, "tick": "no_change", "last_trade_price": 1.7, "last_trade_time": "2026-11-09T11:31:33", "percent_change": -26.087, "prev_day_close": 2.30000007152557}, {"option": "GRND270115P00012000", "bid": 0.2, "bid_size": 188.0, "ask": 0.55, "ask_size": 187.0, "iv": 0.4348, "open_interest": 88.0, "volume": 1.0, "delta": -0.2539, "gamma": 0.1146, "vega": 0.0184, "theta": -0.0067, "rho": -0.0064, "theo": 0.4729, "change": 0.05, "open": 0.45, "high": 0.45, "low": 0.45, "tick": "up", "last_trade_price": 0.45, "last_trade_time": "2026-11-09T13:16:21", "percent_change": 12.5, "prev_day_close": 0.400000005960464}, {"option": "GRND270115C00013000", "bid": 1.0, "bid_size": 98.0, "ask": 1.6, "ask_size": 68.0, "iv": 0.4563, "open_interest": 14.0, "volume": 0.0, "delta": 0.6175, "gamma": 0.1469, "vega": 0.0219, "theta": -0.0072, "rho": 0.0134, "theo": 1.2881, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 1.15, "last_trade_time": "2026-11-06T09:54:36", "percent_change": 0.0, "prev_day_close": 1.60000002384186}, {"option": "GRND270115P00013000", "bid": 0.6, "bid_size": 141.0, "ask": 0.95, "ask_size": 122.0, "iv": 0.4467, "open_interest": 19.0, "volume": 1.0, "delta": -0.3877, "gamma": 0.1496, "vega": 0.022, "theta": -0.0074, "rho": -0.0093, "theo": 0.7841, "change": 0.1, "open": 0.85, "high": 0.85, "low": 0.85, "tick": "up", "last_trade_price": 0.85, "last_trade_time": "2026-11-09T13:48:37", "percent_change": 13.3333, "prev_day_close": 0.75}, {"option": "GRND270115C00014000", "bid": 0.65, "bid_size": 72.0, "ask": 1.05, "ask_size": 100.0, "iv": 0.4607, "open_interest": 44.0, "volume": 0.0, "delta": 0.4657, "gamma": 0.155, "vega": 0.0228, "theta": -0.0075, "rho": 0.0104, "theo": 0.8135, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 1.15, "last_trade_time": "2026-11-06T13:13:18", "percent_change": 0.0, "prev_day_close": 1.125}, {"option": "GRND270115P00014000", "bid": 1.0, "bid_size": 77.0, "ask": 1.9, "ask_size": 287.0, "iv": 0.5071, "open_interest": 17.0, "volume": 7.0, "delta": -0.543, "gamma": 0.1593, "vega": 0.0227, "theta": -0.0076, "rho": -0.0123, "theo": 1.308, "change": 0.3, "open": 1.4, "high": 1.45, "low": 1.4, "tick": "up", "last_trade_price": 1.45, "last_trade_time": "2026-11-09T15:21:06", "percent_change": 26.087, "prev_day_close": 1.14999997615814}, {"option": "GRND270115C00015000", "bid": 0.0, "bid_size": 0.0, "ask": 0.8, "ask_size": 281.0, "iv": 0.3988, "open_interest": 2403.0, "volume": 8.0, "delta": 0.3361, "gamma": 0.1372, "vega": 0.021, "theta": -0.0071, "rho": 0.0076, "theo": 0.5271, "change": -0.32, "open": 0.6, "high": 0.6, "low": 0.38, "tick": "no_change", "last_trade_price": 0.38, "last_trade_time": "2026-11-09T10:28:51", "percent_change": -45.7143, "prev_day_close": 0.700000017881394}, {"option": "GRND270115P00015000", "bid": 1.8, "bid_size": 143.0, "ask": 2.35, "ask_size": 191.0, "iv": 0.4859, "open_interest": 195.0, "volume": 0.0, "delta": -0.6765, "gamma": 0.1426, "vega": 0.0205, "theta": -0.0072, "rho": -0.0142, "theo": 2.0234, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 2.3, "last_trade_time": "2026-11-05T15:08:23", "percent_change": 0.0, "prev_day_close": 1.47500002384186}, {"option": "GRND270115C00016000", "bid": 0.05, "bid_size": 38.0, "ask": 0.55, "ask_size": 292.0, "iv": 0.5095, "open_interest": 1761.0, "volume": 1.0, "delta": 0.2426, "gamma": 0.1114, "vega": 0.018, "theta": -0.0064, "rho": 0.0055, "theo": 0.358, "change": -0.15, "open": 0.3, "high": 0.3, "low": 0.3, "tick": "down", "last_trade_price": 0.3, "last_trade_time": "2026-11-09T13:01:05", "percent_change": -33.3333, "prev_day_close": 0.450000017881393}, {"option": "GRND270115P00016000", "bid": 2.7, "bid_size": 8.0, "ask": 3.1, "ask_size": 102.0, "iv": 0.5105, "open_interest": 89.0, "volume": 0.0, "delta": -0.7735, "gamma": 0.1174, "vega": 0.0172, "theta": -0.0065, "rho": -0.015, "theo": 2.858, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 1.7, "last_trade_time": "2026-10-13T12:22:16", "percent_change": 0.0, "prev_day_close": 2.79999995231628}, {"option": "GRND270115C00017000", "bid": 0.1, "bid_size": 149.0, "ask": 0.3, "ask_size": 104.0, "iv": 0.4764, "open_interest": 1592.0, "volume": 1.0, "delta": 0.1782, "gamma": 0.0878, "vega": 0.015, "theta": -0.0057, "rho": 0.004, "theo": 0.2537, "change": -0.12, "open": 0.23, "high": 0.23, "low": 0.23, "tick": "down", "last_trade_price": 0.23, "last_trade_time": "2026-11-09T13:21:38", "percent_change": -34.2857, "prev_day_close": 0.349999994039536}, {"option": "GRND270115P00017000", "bid": 3.3, "bid_size": 23.0, "ask": 4.5, "ask_size": 71.0, "iv": 0.6074, "open_interest": 34.0, "volume": 0.0, "delta": -0.8411, "gamma": 0.0943, "vega": 0.0137, "theta": -0.0057, "rho": -0.0144, "theo": 3.7588, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 2.1, "last_trade_time": "2026-09-21T11:32:33", "percent_change": 0.0, "prev_day_close": 3.60000002384186}, {"option": "GRND270115C00018000", "bid": 0.0, "bid_size": 0.0, "ask": 0.3, "ask_size": 68.0, "iv": 0.5107, "open_interest": 24.0, "volume": 2.0, "delta": 0.1335, "gamma": 0.0689, "vega": 0.0124, "theta": -0.0049, "rho": 0.003, "theo": 0.1859, "change": -0.15, "open": 0.1, "high": 0.1, "low": 0.1, "tick": "no_change", "last_trade_price": 0.1, "last_trade_time": "2026-11-09T15:49:55", "percent_change": -60.0, "prev_day_close": 0.250000007450581}, {"option": "GRND270115P00018000", "bid": 4.2, "bid_size": 35.0, "ask": 6.0, "ask_size": 80.0, "iv": 0.8119, "open_interest": 0.0, "volume": 0.0, "delta": -0.8885, "gamma": 0.0756, "vega": 0.0106, "theta": -0.0049, "rho": -0.0133, "theo": 4.697, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 5.3, "last_trade_time": "2026-04-20T14:10:06", "percent_change": 0.0, "prev_day_close": 4.55000007152557}, {"option": "GRND270115C00019000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 90.0, "iv": 0.7496, "open_interest": 0.0, "volume": 0.0, "delta": 0.102, "gamma": 0.0543, "vega": 0.0103, "theta": -0.0042, "rho": 0.0023, "theo": 0.1397, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.450000002980232}, {"option": "GRND270115P00019000", "bid": 5.1, "bid_size": 100.0, "ask": 6.5, "ask_size": 80.0, "iv": 0.701, "open_interest": 0.0, "volume": 0.0, "delta": -0.9226, "gamma": 0.0613, "vega": 0.0082, "theta": -0.0041, "rho": -0.0115, "theo": 5.6576, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 5.54999995231628}, {"option": "GRND270115C00020000", "bid": 0.0, "bid_size": 0.0, "ask": 0.15, "ask_size": 108.0, "iv": 0.549, "open_interest": 2400.0, "volume": 0.0, "delta": 0.079, "gamma": 0.0431, "vega": 0.0085, "theta": -0.0036, "rho": 0.0018, "theo": 0.1069, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.05, "last_trade_time": "2026-11-06T13:02:51", "percent_change": 0.0, "prev_day_close": 0.200000006705523}, {"option": "GRND270115P00020000", "bid": 6.0, "bid_size": 75.0, "ask": 7.4, "ask_size": 55.0, "iv": 0.6794, "open_interest": 31.0, "volume": 0.0, "delta": -0.9481, "gamma": 0.0509, "vega": 0.0058, "theta": -0.0036, "rho": -0.0098, "theo": 6.6328, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 3.5, "last_trade_time": "2026-08-04T14:41:36", "percent_change": 0.0, "prev_day_close": 6.54999995231628}, {"option": "GRND270115C00021000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 112.0, "iv": 0.8824, "open_interest": 0.0, "volume": 0.0, "delta": 0.0624, "gamma": 0.0346, "vega": 0.0071, "theta": -0.0031, "rho": 0.0014, "theo": 0.0836, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.349999994039536}, {"option": "GRND270115P00021000", "bid": 7.0, "bid_size": 84.0, "ask": 8.5, "ask_size": 56.0, "iv": 0.7902, "open_interest": 0.0, "volume": 0.0, "delta": -0.9668, "gamma": 0.0406, "vega": 0.0038, "theta": -0.0029, "rho": -0.0066, "theo": 7.6174, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.49999976158142}, {"option": "GRND270115C00022000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 462.0, "iv": 0.9415, "open_interest": 111.0, "volume": 0.0, "delta": 0.0497, "gamma": 0.028, "vega": 0.0059, "theta": -0.0027, "rho": 0.0011, "theo": 0.0661, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.25, "last_trade_time": "2026-09-29T10:42:31", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270115P00022000", "bid": 8.0, "bid_size": 75.0, "ask": 9.6, "ask_size": 55.0, "iv": 0.8941, "open_interest": 1.0, "volume": 0.0, "delta": -0.9824, "gamma": 0.036, "vega": 0.0027, "theta": -0.0026, "rho": -0.0047, "theo": 8.6086, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 8.65, "last_trade_time": "2026-04-20T14:10:55", "percent_change": 0.0, "prev_day_close": 8.5499997138977}, {"option": "GRND270115C00023000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 399.0, "iv": 0.9967, "open_interest": 0.0, "volume": 0.0, "delta": 0.04, "gamma": 0.0228, "vega": 0.005, "theta": -0.0023, "rho": 0.0009, "theo": 0.0529, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270115P00023000", "bid": 8.9, "bid_size": 49.0, "ask": 11.7, "ask_size": 22.0, "iv": 1.2872, "open_interest": 0.0, "volume": 0.0, "delta": -0.9916, "gamma": 0.0243, "vega": 0.0004, "theta": -0.0016, "rho": 0.0, "theo": 9.605, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 9.44999980926514}, {"option": "GRND270115C00024000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 422.0, "iv": 1.0485, "open_interest": 0.0, "volume": 0.0, "delta": 0.0326, "gamma": 0.0187, "vega": 0.0042, "theta": -0.002, "rho": 0.0007, "theo": 0.0427, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270115P00024000", "bid": 9.9, "bid_size": 49.0, "ask": 12.7, "ask_size": 22.0, "iv": 1.3467, "open_interest": 0.0, "volume": 0.0, "delta": -0.9974, "gamma": 0.0073, "vega": 0.0, "theta": -0.0016, "rho": 0.0, "theo": 10.605, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 10.4499998092651}, {"option": "GRND270115C00025000", "bid": 0.0, "bid_size": 0.0, "ask": 0.25, "ask_size": 48.0, "iv": 0.8536, "open_interest": 1650.0, "volume": 0.0, "delta": 0.0267, "gamma": 0.0155, "vega": 0.0036, "theta": -0.0018, "rho": 0.0006, "theo": 0.0348, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.05, "last_trade_time": "2026-11-04T14:38:40", "percent_change": 0.0, "prev_day_close": 0.025000000372529}, {"option": "GRND270115P00025000", "bid": 10.6, "bid_size": 49.0, "ask": 12.8, "ask_size": 21.0, "iv": 0.9476, "open_interest": 0.0, "volume": 0.0, "delta": -1.0, "gamma": 0.0, "vega": 0.0, "theta": -0.0016, "rho": 0.0, "theo": 11.605, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 11.6, "last_trade_time": "2026-04-20T14:11:19", "percent_change": 0.0, "prev_day_close": 11.4499998092651}, {"option": "GRND270115C00030000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 565.0, "iv": 1.3055, "open_interest": 322.0, "volume": 0.0, "delta": 0.0109, "gamma": 0.0066, "vega": 0.0016, "theta": -0.0009, "rho": 0.0002, "theo": 0.0138, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.35, "last_trade_time": "2026-08-03T13:49:10", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270115P00030000", "bid": 15.4, "bid_size": 41.0, "ask": 17.9, "ask_size": 21.0, "iv": 1.0759, "open_interest": 0.0, "volume": 0.0, "delta": -1.0, "gamma": 0.0, "vega": 0.0, "theta": -0.0016, "rho": 0.0, "theo": 16.605, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 16.55, "last_trade_time": "2026-04-20T14:11:34", "percent_change": 0.0, "prev_day_close": 16.5499997138977}, {"option": "GRND270115C00035000", "bid": 0.0, "bid_size": 0.0, "ask": 0.05, "ask_size": 2.0, "iv": 0.9388, "open_interest": 385.0, "volume": 0.0, "delta": 0.005, "gamma": 0.0031, "vega": 0.0008, "theta": -0.0005, "rho": 0.0001, "theo": 0.0062, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.05, "last_trade_time": "2026-11-05T14:00:33", "percent_change": 0.0, "prev_day_close": 0.025000000372529}, {"option": "GRND270115P00035000", "bid": 20.4, "bid_size": 41.0, "ask": 22.9, "ask_size": 24.0, "iv": 1.2425, "open_interest": 0.0, "volume": 0.0, "delta": -1.0, "gamma": 0.0, "vega": 0.0, "theta": -0.0016, "rho": 0.0, "theo": 21.605, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 21.5, "last_trade_time": "2026-04-20T14:11:52", "percent_change": 0.0, "prev_day_close": 21.4499998092651}, {"option": "GRND270219C00005000", "bid": 6.9, "bid_size": 49.0, "ask": 9.7, "ask_size": 29.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.9572, "gamma": 0.0093, "vega": 0.0066, "theta": -0.0033, "rho": 0.0117, "theo": 8.728, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 8.94999980926514}, {"option": "GRND270219P00005000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 449.0, "iv": 1.5967, "open_interest": 0.0, "volume": 0.0, "delta": -0.0445, "gamma": 0.0093, "vega": 0.0067, "theta": -0.0046, "rho": -0.0022, "theo": 0.2488, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.0}, {"option": "GRND270219C00006000", "bid": 6.7, "bid_size": 84.0, "ask": 8.4, "ask_size": 9.0, "iv": 0.8617, "open_interest": 0.0, "volume": 0.0, "delta": 0.946, "gamma": 0.013, "vega": 0.0079, "theta": -0.0035, "rho": 0.014, "theo": 7.7547, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.65000009536743}, {"option": "GRND270219P00006000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 414.0, "iv": 1.3415, "open_interest": 0.0, "volume": 0.0, "delta": -0.0556, "gamma": 0.0131, "vega": 0.008, "theta": -0.0047, "rho": -0.0026, "theo": 0.2625, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219C00007000", "bid": 5.8, "bid_size": 11.0, "ask": 7.3, "ask_size": 6.0, "iv": 0.6824, "open_interest": 0.0, "volume": 0.0, "delta": 0.9324, "gamma": 0.0181, "vega": 0.0094, "theta": -0.0037, "rho": 0.0162, "theo": 6.7861, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 6.70000004768372}, {"option": "GRND270219P00007000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 122.0, "iv": 1.1288, "open_interest": 0.0, "volume": 0.0, "delta": -0.0694, "gamma": 0.0182, "vega": 0.0095, "theta": -0.0047, "rho": -0.0032, "theo": 0.281, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219C00008000", "bid": 4.9, "bid_size": 11.0, "ask": 6.1, "ask_size": 11.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.9146, "gamma": 0.0251, "vega": 0.0112, "theta": -0.004, "rho": 0.0183, "theo": 5.8249, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 5.80000019073486}, {"option": "GRND270219P00008000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 133.0, "iv": 0.9451, "open_interest": 0.0, "volume": 0.0, "delta": -0.0873, "gamma": 0.0253, "vega": 0.0113, "theta": -0.0048, "rho": -0.0038, "theo": 0.307, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219C00009000", "bid": 4.0, "bid_size": 12.0, "ask": 5.4, "ask_size": 10.0, "iv": 0.6118, "open_interest": 0.0, "volume": 0.0, "delta": 0.8907, "gamma": 0.035, "vega": 0.0134, "theta": -0.0042, "rho": 0.0201, "theo": 4.8755, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 4.80000007152557}, {"option": "GRND270219P00009000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.7819, "open_interest": 0.0, "volume": 0.0, "delta": -0.1116, "gamma": 0.0353, "vega": 0.0135, "theta": -0.005, "rho": -0.0048, "theo": 0.345, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219C00010000", "bid": 3.1, "bid_size": 19.0, "ask": 4.4, "ask_size": 12.0, "iv": 0.5169, "open_interest": 2.0, "volume": 0.0, "delta": 0.8568, "gamma": 0.0492, "vega": 0.0162, "theta": -0.0046, "rho": 0.0215, "theo": 3.9461, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 4.5, "last_trade_time": "2026-10-16T14:40:01", "percent_change": 0.0, "prev_day_close": 3.90000009536743}, {"option": "GRND270219P00010000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.6333, "open_interest": 0.0, "volume": 0.0, "delta": -0.146, "gamma": 0.0498, "vega": 0.0163, "theta": -0.0051, "rho": -0.006, "theo": 0.4034, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219C00011000", "bid": 2.3, "bid_size": 23.0, "ask": 3.4, "ask_size": 13.0, "iv": 0.4493, "open_interest": 5.0, "volume": 0.0, "delta": 0.8064, "gamma": 0.0693, "vega": 0.0196, "theta": -0.0049, "rho": 0.0221, "theo": 3.0537, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 6.1, "last_trade_time": "2026-08-10T11:55:48", "percent_change": 0.0, "prev_day_close": 3.14999997615814}, {"option": "GRND270219P00011000", "bid": 0.05, "bid_size": 27.0, "ask": 0.8, "ask_size": 32.0, "iv": 0.5216, "open_interest": 2.0, "volume": 0.0, "delta": -0.1972, "gamma": 0.0703, "vega": 0.0197, "theta": -0.0054, "rho": -0.0079, "theo": 0.4992, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.45, "last_trade_time": "2026-10-22T10:43:55", "percent_change": 0.0, "prev_day_close": 0.425000000745058}, {"option": "GRND270219C00012000", "bid": 0.8, "bid_size": 14.0, "ask": 3.7, "ask_size": 92.0, "iv": 0.4966, "open_interest": 0.0, "volume": 0.0, "delta": 0.7298, "gamma": 0.0952, "vega": 0.0236, "theta": -0.0053, "rho": 0.0215, "theo": 2.2356, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.02499994635582}, {"option": "GRND270219P00012000", "bid": 0.25, "bid_size": 21.0, "ask": 1.0, "ask_size": 26.0, "iv": 0.471, "open_interest": 1.0, "volume": 0.0, "delta": -0.2754, "gamma": 0.097, "vega": 0.0237, "theta": -0.0057, "rho": -0.0106, "theo": 0.671, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.55, "last_trade_time": "2026-10-16T14:34:22", "percent_change": 0.0, "prev_day_close": 0.525000000372529}, {"option": "GRND270219C00013000", "bid": 1.35, "bid_size": 57.0, "ask": 1.8, "ask_size": 88.0, "iv": 0.4567, "open_interest": 26.0, "volume": 0.0, "delta": 0.6214, "gamma": 0.1186, "vega": 0.027, "theta": -0.0058, "rho": 0.0192, "theo": 1.5627, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 1.4, "last_trade_time": "2026-10-30T14:46:32", "percent_change": 0.0, "prev_day_close": 1.84999996423721}, {"option": "GRND270219P00013000", "bid": 0.65, "bid_size": 52.0, "ask": 1.45, "ask_size": 203.0, "iv": 0.474, "open_interest": 5.0, "volume": 0.0, "delta": -0.3869, "gamma": 0.1219, "vega": 0.0271, "theta": -0.006, "rho": -0.0142, "theo": 0.9908, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 1.5, "last_trade_time": "2026-10-30T11:12:19", "percent_change": 0.0, "prev_day_close": 1.05000001192093}, {"option": "GRND270219C00014000", "bid": 0.55, "bid_size": 162.0, "ask": 1.8, "ask_size": 185.0, "iv": 0.477, "open_interest": 1.0, "volume": 3.0, "delta": 0.4998, "gamma": 0.1248, "vega": 0.0283, "theta": -0.0061, "rho": 0.0159, "theo": 1.0982, "change": 0.19, "open": 1.09, "high": 1.09, "low": 1.09, "tick": "no_change", "last_trade_price": 1.09, "last_trade_time": "2026-11-09T13:11:46", "percent_change": 21.1111, "prev_day_close": 0.899999991059303}, {"option": "GRND270219P00014000", "bid": 1.25, "bid_size": 46.0, "ask": 2.1, "ask_size": 165.0, "iv": 0.5038, "open_interest": 1.0, "volume": 0.0, "delta": -0.5125, "gamma": 0.1296, "vega": 0.0281, "theta": -0.0063, "rho": -0.0179, "theo": 1.5231, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 1.05, "last_trade_time": "2026-09-18T15:03:26", "percent_change": 0.0, "prev_day_close": 1.34999996423721}, {"option": "GRND270219C00015000", "bid": 0.25, "bid_size": 126.0, "ask": 1.1, "ask_size": 113.0, "iv": 0.4206, "open_interest": 26.0, "volume": 4.0, "delta": 0.3958, "gamma": 0.1149, "vega": 0.0273, "theta": -0.0062, "rho": 0.0127, "theo": 0.8129, "change": -0.225, "open": 0.7, "high": 0.7, "low": 0.7, "tick": "down", "last_trade_price": 0.7, "last_trade_time": "2026-11-09T14:32:58", "percent_change": -24.3243, "prev_day_close": 0.925000011920929}, {"option": "GRND270219P00015000", "bid": 1.85, "bid_size": 55.0, "ask": 2.75, "ask_size": 139.0, "iv": 0.4948, "open_interest": 0.0, "volume": 0.0, "delta": -0.6204, "gamma": 0.1206, "vega": 0.0268, "theta": -0.0063, "rho": -0.0206, "theo": 2.2378, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.25000002980232}, {"option": "GRND270219C00016000", "bid": 0.2, "bid_size": 70.0, "ask": 0.95, "ask_size": 134.0, "iv": 0.4786, "open_interest": 40.0, "volume": 0.0, "delta": 0.3178, "gamma": 0.0998, "vega": 0.0253, "theta": -0.0061, "rho": 0.0102, "theo": 0.634, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.62, "last_trade_time": "2026-11-06T15:56:53", "percent_change": 0.0, "prev_day_close": 0.675000011920929}, {"option": "GRND270219P00016000", "bid": 2.5, "bid_size": 61.0, "ask": 3.6, "ask_size": 184.0, "iv": 0.4979, "open_interest": 1.0, "volume": 0.0, "delta": -0.7018, "gamma": 0.106, "vega": 0.0244, "theta": -0.0061, "rho": -0.0223, "theo": 3.0603, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 2.0, "last_trade_time": "2026-08-28T15:34:10", "percent_change": 0.0, "prev_day_close": 2.95000004768372}, {"option": "GRND270219C00017000", "bid": 0.1, "bid_size": 62.0, "ask": 0.75, "ask_size": 196.0, "iv": 0.4947, "open_interest": 19.0, "volume": 0.0, "delta": 0.2603, "gamma": 0.0854, "vega": 0.023, "theta": -0.0059, "rho": 0.0084, "theo": 0.5132, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.55, "last_trade_time": "2026-11-06T15:49:47", "percent_change": 0.0, "prev_day_close": 0.425000000745058}, {"option": "GRND270219P00017000", "bid": 3.1, "bid_size": 14.0, "ask": 4.5, "ask_size": 71.0, "iv": 0.4634, "open_interest": 1.0, "volume": 0.0, "delta": -0.7621, "gamma": 0.0918, "vega": 0.0217, "theta": -0.0059, "rho": -0.0229, "theo": 3.942, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 2.52, "last_trade_time": "2026-08-11T13:22:53", "percent_change": 0.0, "prev_day_close": 3.70000004768372}, {"option": "GRND270219C00018000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 109.0, "iv": 0.5395, "open_interest": 14.0, "volume": 0.0, "delta": 0.2172, "gamma": 0.0731, "vega": 0.0208, "theta": -0.0057, "rho": 0.007, "theo": 0.4263, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.4, "last_trade_time": "2026-11-06T15:50:43", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219P00018000", "bid": 4.3, "bid_size": 10.0, "ask": 5.4, "ask_size": 80.0, "iv": 0.5604, "open_interest": 0.0, "volume": 0.0, "delta": -0.8077, "gamma": 0.0796, "vega": 0.019, "theta": -0.0055, "rho": -0.0226, "theo": 4.8582, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 4.5}, {"option": "GRND270219C00019000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.6011, "open_interest": 33.0, "volume": 0.0, "delta": 0.1839, "gamma": 0.0629, "vega": 0.0189, "theta": -0.0054, "rho": 0.0059, "theo": 0.3606, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.75, "last_trade_time": "2026-09-04T10:10:32", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219P00019000", "bid": 5.1, "bid_size": 10.0, "ask": 6.5, "ask_size": 80.0, "iv": 0.5959, "open_interest": 0.0, "volume": 0.0, "delta": -0.8431, "gamma": 0.0694, "vega": 0.0167, "theta": -0.0051, "rho": -0.0227, "theo": 5.7959, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 5.45000004768372}, {"option": "GRND270219C00020000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.6573, "open_interest": 23.0, "volume": 0.0, "delta": 0.1577, "gamma": 0.0545, "vega": 0.0171, "theta": -0.0051, "rho": 0.0051, "theo": 0.3093, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.26, "last_trade_time": "2026-11-05T15:52:28", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219P00020000", "bid": 6.0, "bid_size": 84.0, "ask": 7.5, "ask_size": 64.0, "iv": 0.6207, "open_interest": 0.0, "volume": 0.0, "delta": -0.8715, "gamma": 0.0612, "vega": 0.0145, "theta": -0.0048, "rho": -0.0216, "theo": 6.7489, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 6.5}, {"option": "GRND270219C00021000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.709, "open_interest": 5.0, "volume": 0.0, "delta": 0.1366, "gamma": 0.0476, "vega": 0.0155, "theta": -0.0048, "rho": 0.0044, "theo": 0.268, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.75, "last_trade_time": "2026-10-05T10:39:34", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219P00021000", "bid": 7.0, "bid_size": 84.0, "ask": 8.4, "ask_size": 64.0, "iv": 0.6343, "open_interest": 0.0, "volume": 0.0, "delta": -0.8944, "gamma": 0.0544, "vega": 0.0126, "theta": -0.0043, "rho": -0.0207, "theo": 7.712, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.34999990463257}, {"option": "GRND270219C00025000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 601.0, "iv": 0.8836, "open_interest": 13.0, "volume": 0.0, "delta": 0.0828, "gamma": 0.0295, "vega": 0.0108, "theta": -0.0037, "rho": 0.0026, "theo": 0.1627, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.3, "last_trade_time": "2026-08-27T14:18:46", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219P00025000", "bid": 10.5, "bid_size": 84.0, "ask": 12.8, "ask_size": 56.0, "iv": 0.755, "open_interest": 0.0, "volume": 0.0, "delta": -0.9556, "gamma": 0.0368, "vega": 0.0059, "theta": -0.0028, "rho": -0.0132, "theo": 11.6303, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 11.6500000953674}, {"option": "GRND270219C00030000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 365.0, "iv": 1.0532, "open_interest": 0.0, "volume": 0.0, "delta": 0.0493, "gamma": 0.0178, "vega": 0.0072, "theta": -0.0027, "rho": 0.0016, "theo": 0.0963, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270219P00030000", "bid": 15.3, "bid_size": 41.0, "ask": 18.7, "ask_size": 22.0, "iv": 1.2099, "open_interest": 0.0, "volume": 0.0, "delta": -0.9931, "gamma": 0.0132, "vega": 0.0, "theta": -0.0023, "rho": 0.0, "theo": 16.605, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 16.5}, {"option": "GRND270219C00035000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 370.0, "iv": 1.1883, "open_interest": 0.0, "volume": 0.0, "delta": 0.0316, "gamma": 0.0116, "vega": 0.005, "theta": -0.002, "rho": 0.001, "theo": 0.0612, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.224999994039536}, {"option": "GRND270219P00035000", "bid": 20.3, "bid_size": 49.0, "ask": 23.2, "ask_size": 21.0, "iv": 1.1826, "open_interest": 0.0, "volume": 0.0, "delta": -1.0, "gamma": 0.0, "vega": 0.0, "theta": -0.0023, "rho": 0.0, "theo": 21.605, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 21.5}, {"option": "GRND270521C00007000", "bid": 5.0, "bid_size": 11.0, "ask": 8.0, "ask_size": 64.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.9231, "gamma": 0.0179, "vega": 0.0134, "theta": -0.0019, "rho": 0.0289, "theo": 6.8282, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 6.90000009536743}, {"option": "GRND270521P00007000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 121.0, "iv": 0.8287, "open_interest": 0.0, "volume": 0.0, "delta": -0.0719, "gamma": 0.018, "vega": 0.0134, "theta": -0.0027, "rho": -0.0062, "theo": 0.3084, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270521C00008000", "bid": 5.1, "bid_size": 30.0, "ask": 6.5, "ask_size": 30.0, "iv": 0.6175, "open_interest": 0.0, "volume": 0.0, "delta": 0.9023, "gamma": 0.0246, "vega": 0.0162, "theta": -0.0021, "rho": 0.0328, "theo": 5.9008, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 6.0}, {"option": "GRND270521P00008000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 129.0, "iv": 0.6949, "open_interest": 0.0, "volume": 0.0, "delta": -0.0928, "gamma": 0.0249, "vega": 0.0163, "theta": -0.0028, "rho": -0.0077, "theo": 0.3574, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270521C00009000", "bid": 3.6, "bid_size": 25.0, "ask": 5.5, "ask_size": 31.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.8739, "gamma": 0.0338, "vega": 0.0196, "theta": -0.0025, "rho": 0.0357, "theo": 4.998, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 5.0}, {"option": "GRND270521P00009000", "bid": 0.25, "bid_size": 133.0, "ask": 0.6, "ask_size": 190.0, "iv": 0.6024, "open_interest": 0.0, "volume": 110.0, "delta": -0.1216, "gamma": 0.0342, "vega": 0.0197, "theta": -0.0031, "rho": -0.0098, "theo": 0.431, "change": -0.075, "open": 0.3, "high": 0.3, "low": 0.3, "tick": "down", "last_trade_price": 0.3, "last_trade_time": "2026-11-09T10:35:08", "percent_change": -20.0, "prev_day_close": 0.375}, {"option": "GRND270521C00010000", "bid": 2.8, "bid_size": 94.0, "ask": 4.7, "ask_size": 73.0, "iv": 0.3525, "open_interest": 62.0, "volume": 0.0, "delta": 0.8342, "gamma": 0.0457, "vega": 0.0238, "theta": -0.0028, "rho": 0.0375, "theo": 4.134, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 4.59, "last_trade_time": "2026-10-23T15:40:39", "percent_change": 0.0, "prev_day_close": 3.97499990463257}, {"option": "GRND270521P00010000", "bid": 0.15, "bid_size": 117.0, "ask": 0.85, "ask_size": 118.0, "iv": 0.5238, "open_interest": 1.0, "volume": 0.0, "delta": -0.162, "gamma": 0.0465, "vega": 0.024, "theta": -0.0033, "rho": -0.0127, "theo": 0.544, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.5, "last_trade_time": "2026-10-08T14:50:44", "percent_change": 0.0, "prev_day_close": 0.550000011920929}, {"option": "GRND270521C00011000", "bid": 2.05, "bid_size": 15.0, "ask": 3.9, "ask_size": 34.0, "iv": 0.3612, "open_interest": 0.0, "volume": 0.0, "delta": 0.7794, "gamma": 0.06, "vega": 0.0285, "theta": -0.0033, "rho": 0.0379, "theo": 3.3325, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 3.22500014305115}, {"option": "GRND270521P00011000", "bid": 0.4, "bid_size": 29.0, "ask": 1.15, "ask_size": 38.0, "iv": 0.5141, "open_interest": 0.0, "volume": 0.0, "delta": -0.218, "gamma": 0.0613, "vega": 0.0287, "theta": -0.0036, "rho": -0.0167, "theo": 0.7206, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.20000000298023}, {"option": "GRND270521C00012000", "bid": 1.4, "bid_size": 127.0, "ask": 3.3, "ask_size": 121.0, "iv": 0.3798, "open_interest": 48.0, "volume": 0.0, "delta": 0.7076, "gamma": 0.0746, "vega": 0.0332, "theta": -0.0037, "rho": 0.0365, "theo": 2.6257, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 2.97, "last_trade_time": "2026-11-06T11:38:01", "percent_change": 0.0, "prev_day_close": 2.89999997615814}, {"option": "GRND270521P00012000", "bid": 0.55, "bid_size": 23.0, "ask": 1.5, "ask_size": 32.0, "iv": 0.4735, "open_interest": 0.0, "volume": 0.0, "delta": -0.2918, "gamma": 0.0767, "vega": 0.0334, "theta": -0.004, "rho": -0.0218, "theo": 0.994, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.07499998807907}, {"option": "GRND270521C00013000", "bid": 0.85, "bid_size": 35.0, "ask": 2.8, "ask_size": 40.0, "iv": 0.3896, "open_interest": 0.0, "volume": 0.0, "delta": 0.6228, "gamma": 0.0856, "vega": 0.0368, "theta": -0.004, "rho": 0.0335, "theo": 2.0432, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.32500001788139}, {"option": "GRND270521P00013000", "bid": 0.8, "bid_size": 41.0, "ask": 1.95, "ask_size": 54.0, "iv": 0.4436, "open_interest": 0.0, "volume": 0.0, "delta": -0.3795, "gamma": 0.0887, "vega": 0.0369, "theta": -0.0043, "rho": -0.0276, "theo": 1.3948, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.47499996423721}, {"option": "GRND270521C00014000", "bid": 1.05, "bid_size": 34.0, "ask": 2.1, "ask_size": 15.0, "iv": 0.4419, "open_interest": 0.0, "volume": 0.0, "delta": 0.535, "gamma": 0.0902, "vega": 0.0386, "theta": -0.0043, "rho": 0.0296, "theo": 1.5923, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.75}, {"option": "GRND270521P00014000", "bid": 1.55, "bid_size": 25.0, "ask": 2.5, "ask_size": 80.0, "iv": 0.4708, "open_interest": 0.0, "volume": 0.0, "delta": -0.4711, "gamma": 0.0945, "vega": 0.0385, "theta": -0.0044, "rho": -0.0329, "theo": 1.9309, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.20000001788139}, {"option": "GRND270521C00015000", "bid": 0.05, "bid_size": 28.0, "ask": 1.75, "ask_size": 31.0, "iv": 0.3589, "open_interest": 20.0, "volume": 0.0, "delta": 0.4536, "gamma": 0.0889, "vega": 0.0385, "theta": -0.0044, "rho": 0.0256, "theo": 1.2552, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 2.25, "last_trade_time": "2026-10-16T11:49:42", "percent_change": 0.0, "prev_day_close": 1.50000005960464}, {"option": "GRND270521P00015000", "bid": 2.2, "bid_size": 18.0, "ask": 3.3, "ask_size": 81.0, "iv": 0.4952, "open_interest": 0.0, "volume": 0.0, "delta": -0.5568, "gamma": 0.0943, "vega": 0.0381, "theta": -0.0045, "rho": -0.0375, "theo": 2.5844, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.59999996423721}, {"option": "GRND270521C00016000", "bid": 0.5, "bid_size": 31.0, "ask": 1.5, "ask_size": 80.0, "iv": 0.4604, "open_interest": 7.0, "volume": 0.0, "delta": 0.3831, "gamma": 0.0839, "vega": 0.0371, "theta": -0.0043, "rho": 0.0219, "theo": 1.0042, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 1.72, "last_trade_time": "2026-10-01T13:03:59", "percent_change": 0.0, "prev_day_close": 0.875}, {"option": "GRND270521P00016000", "bid": 2.9, "bid_size": 23.0, "ask": 4.1, "ask_size": 85.0, "iv": 0.5088, "open_interest": 0.0, "volume": 0.0, "delta": -0.6318, "gamma": 0.0903, "vega": 0.0362, "theta": -0.0044, "rho": -0.0407, "theo": 3.3276, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 3.29999995231628}, {"option": "GRND270521C00017000", "bid": 0.3, "bid_size": 32.0, "ask": 1.3, "ask_size": 80.0, "iv": 0.4688, "open_interest": 0.0, "volume": 0.0, "delta": 0.324, "gamma": 0.0771, "vega": 0.035, "theta": -0.0042, "rho": 0.0186, "theo": 0.8152, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.675000011920929}, {"option": "GRND270521P00017000", "bid": 2.75, "bid_size": 38.0, "ask": 4.7, "ask_size": 72.0, "iv": 0.3336, "open_interest": 0.0, "volume": 0.0, "delta": -0.6954, "gamma": 0.0844, "vega": 0.0334, "theta": -0.0042, "rho": -0.0421, "theo": 4.1355, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 4.05000007152557}, {"option": "GRND270521C00018000", "bid": 0.0, "bid_size": 0.0, "ask": 1.1, "ask_size": 80.0, "iv": 0.4471, "open_interest": 0.0, "volume": 0.0, "delta": 0.2753, "gamma": 0.0698, "vega": 0.0325, "theta": -0.004, "rho": 0.0159, "theo": 0.6703, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.524999976158142}, {"option": "GRND270521P00018000", "bid": 3.5, "bid_size": 33.0, "ask": 5.6, "ask_size": 72.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.7489, "gamma": 0.078, "vega": 0.0302, "theta": -0.004, "rho": -0.0425, "theo": 4.9903, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 4.79999995231628}, {"option": "GRND270521C00019000", "bid": 0.15, "bid_size": 82.0, "ask": 0.7, "ask_size": 87.0, "iv": 0.4508, "open_interest": 1.0, "volume": 0.0, "delta": 0.235, "gamma": 0.0627, "vega": 0.03, "theta": -0.0038, "rho": 0.0136, "theo": 0.5572, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.65, "last_trade_time": "2026-11-06T15:45:48", "percent_change": 0.0, "prev_day_close": 0.4749999884516}, {"option": "GRND270521P00019000", "bid": 5.2, "bid_size": 46.0, "ask": 6.7, "ask_size": 80.0, "iv": 0.5229, "open_interest": 0.0, "volume": 0.0, "delta": -0.7938, "gamma": 0.0716, "vega": 0.0269, "theta": -0.0037, "rho": -0.042, "theo": 5.8793, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 5.60000014305115}, {"option": "GRND270521C00020000", "bid": 0.15, "bid_size": 45.0, "ask": 0.75, "ask_size": 122.0, "iv": 0.5021, "open_interest": 11.0, "volume": 0.0, "delta": 0.2017, "gamma": 0.0561, "vega": 0.0275, "theta": -0.0035, "rho": 0.0118, "theo": 0.4677, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.52, "last_trade_time": "2026-11-06T15:49:02", "percent_change": 0.0, "prev_day_close": 0.400000005960464}, {"option": "GRND270521P00020000", "bid": 6.1, "bid_size": 33.0, "ask": 7.6, "ask_size": 80.0, "iv": 0.5318, "open_interest": 0.0, "volume": 0.0, "delta": -0.8318, "gamma": 0.0657, "vega": 0.0235, "theta": -0.0034, "rho": -0.0408, "theo": 6.7942, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 6.54999995231628}, {"option": "GRND270521C00021000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.5111, "open_interest": 1.0, "volume": 0.0, "delta": 0.174, "gamma": 0.0502, "vega": 0.0251, "theta": -0.0033, "rho": 0.0101, "theo": 0.3957, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.77, "last_trade_time": "2026-10-14T12:23:44", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270521P00021000", "bid": 7.1, "bid_size": 30.0, "ask": 8.4, "ask_size": 80.0, "iv": 0.5301, "open_interest": 0.0, "volume": 0.0, "delta": -0.8643, "gamma": 0.0604, "vega": 0.0201, "theta": -0.0031, "rho": -0.0373, "theo": 7.7287, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.45000004768372}, {"option": "GRND270521C00022000", "bid": 0.05, "bid_size": 10.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.5566, "open_interest": 0.0, "volume": 0.0, "delta": 0.1508, "gamma": 0.0448, "vega": 0.0229, "theta": -0.0031, "rho": 0.0088, "theo": 0.3371, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.400000000372529}, {"option": "GRND270521P00022000", "bid": 7.5, "bid_size": 84.0, "ask": 9.9, "ask_size": 26.0, "iv": 0.5422, "open_interest": 0.0, "volume": 0.0, "delta": -0.892, "gamma": 0.0556, "vega": 0.0171, "theta": -0.0028, "rho": -0.0342, "theo": 8.6786, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 8.45000004768372}, {"option": "GRND270521C00023000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 80.0, "iv": 0.5789, "open_interest": 0.0, "volume": 0.0, "delta": 0.1313, "gamma": 0.04, "vega": 0.0208, "theta": -0.0028, "rho": 0.0077, "theo": 0.289, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270521P00023000", "bid": 8.5, "bid_size": 84.0, "ask": 11.3, "ask_size": 64.0, "iv": 0.6729, "open_interest": 0.0, "volume": 0.0, "delta": -0.9165, "gamma": 0.0516, "vega": 0.0138, "theta": -0.0025, "rho": -0.0298, "theo": 9.6411, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 9.5499997138977}, {"option": "GRND270521C00025000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 64.0, "iv": 0.6385, "open_interest": 1.0, "volume": 0.0, "delta": 0.1007, "gamma": 0.0321, "vega": 0.0173, "theta": -0.0024, "rho": 0.0059, "theo": 0.2158, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.38, "last_trade_time": "2026-10-08T14:50:44", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "GRND270521P00025000", "bid": 9.9, "bid_size": 84.0, "ask": 13.7, "ask_size": 39.0, "iv": 0.6976, "open_interest": 0.0, "volume": 0.0, "delta": -0.9567, "gamma": 0.0446, "vega": 0.0078, "theta": -0.002, "rho": -0.0186, "theo": 11.5945, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 10.7999997138977}, {"option": "GRND270521C00030000", "bid": 0.0, "bid_size": 0.0, "ask": 0.3, "ask_size": 51.0, "iv": 0.6254, "open_interest": 0.0, "volume": 0.0, "delta": 0.055, "gamma": 0.019, "vega": 0.0109, "theta": -0.0016, "rho": 0.0032, "theo": 0.1116, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.224999994039536}, {"option": "GRND270521P00030000", "bid": 15.4, "bid_size": 41.0, "ask": 18.7, "ask_size": 22.0, "iv": 0.9534, "open_interest": 0.0, "volume": 0.0, "delta": -1.0, "gamma": 0.0, "vega": 0.0, "theta": -0.0013, "rho": 0.0, "theo": 16.575, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 16.5}, {"option": "GRND280121C00003000", "bid": 8.0, "bid_size": 41.0, "ask": 12.5, "ask_size": 24.0, "iv": 0.0, "open_interest": 12.0, "volume": 0.0, "delta": 0.953, "gamma": 0.0035, "vega": 0.0124, "theta": -0.0013, "rho": 0.0123, "theo": 11.4871, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 13.3, "last_trade_time": "2026-07-01T10:10:52", "percent_change": 0.0, "prev_day_close": 10.7000002861023}, {"option": "GRND280121P00003000", "bid": 0.0, "bid_size": 0.0, "ask": 2.6, "ask_size": 455.0, "iv": 1.9273, "open_interest": 12.0, "volume": 0.0, "delta": -0.0384, "gamma": 0.0033, "vega": 0.0124, "theta": -0.0024, "rho": -0.0162, "theo": 1.0574, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.85, "last_trade_time": "2026-11-06T10:50:55", "percent_change": 0.0, "prev_day_close": 0.125}, {"option": "GRND280121C00005000", "bid": 7.3, "bid_size": 17.0, "ask": 10.2, "ask_size": 45.0, "iv": 0.7067, "open_interest": 4.0, "volume": 0.0, "delta": 0.9158, "gamma": 0.0084, "vega": 0.0207, "theta": -0.0017, "rho": 0.0262, "theo": 9.6073, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 8.92, "last_trade_time": "2026-11-04T09:43:40", "percent_change": 0.0, "prev_day_close": 8.90000009536743}, {"option": "GRND280121P00005000", "bid": 0.0, "bid_size": 0.0, "ask": 2.7, "ask_size": 450.0, "iv": 1.2977, "open_interest": 7.0, "volume": 0.0, "delta": -0.0738, "gamma": 0.0081, "vega": 0.0206, "theta": -0.0027, "rho": -0.0219, "theo": 1.1023, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.15, "last_trade_time": "2026-08-03T11:23:05", "percent_change": 0.0, "prev_day_close": 1.35000002384186}, {"option": "GRND280121C00008000", "bid": 5.1, "bid_size": 135.0, "ask": 7.8, "ask_size": 191.0, "iv": 0.6359, "open_interest": 174.0, "volume": 0.0, "delta": 0.8483, "gamma": 0.0197, "vega": 0.0325, "theta": -0.002, "rho": 0.0486, "theo": 6.8604, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 8.85, "last_trade_time": "2026-09-24T10:52:10", "percent_change": 0.0, "prev_day_close": 6.5}, {"option": "GRND280121P00008000", "bid": 0.0, "bid_size": 0.0, "ask": 2.95, "ask_size": 250.0, "iv": 0.8419, "open_interest": 10.0, "volume": 0.0, "delta": -0.1389, "gamma": 0.0198, "vega": 0.0325, "theta": -0.0028, "rho": -0.0318, "theo": 1.2271, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 1.37, "last_trade_time": "2026-11-06T10:50:55", "percent_change": 0.0, "prev_day_close": 0.600000008940697}, {"option": "GRND280121C00010000", "bid": 3.7, "bid_size": 180.0, "ask": 6.4, "ask_size": 247.0, "iv": 0.5771, "open_interest": 302.0, "volume": 2.0, "delta": 0.7845, "gamma": 0.0308, "vega": 0.041, "theta": -0.0022, "rho": 0.061, "theo": 5.1906, "change": -0.14, "open": 4.91, "high": 4.91, "low": 4.91, "tick": "no_change", "last_trade_price": 4.91, "last_trade_time": "2026-11-09T15:20:10", "percent_change": -2.77228, "prev_day_close": 5.05000007152557}, {"option": "GRND280121P00010000", "bid": 0.0, "bid_size": 0.0, "ask": 3.2, "ask_size": 126.0, "iv": 0.6444, "open_interest": 1.0, "volume": 0.0, "delta": -0.2029, "gamma": 0.0318, "vega": 0.0413, "theta": -0.0028, "rho": -0.0419, "theo": 1.4642, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 1.0, "last_trade_time": "2026-09-16T13:25:31", "percent_change": 0.0, "prev_day_close": 1.60000002384186}, {"option": "GRND280121C00013000", "bid": 2.9, "bid_size": 189.0, "ask": 3.5, "ask_size": 35.0, "iv": 0.4945, "open_interest": 73.0, "volume": 50.0, "delta": 0.6456, "gamma": 0.0492, "vega": 0.0531, "theta": -0.0026, "rho": 0.0651, "theo": 3.2022, "change": -0.1, "open": 3.6, "high": 3.6, "low": 3.6, "tick": "down", "last_trade_price": 3.6, "last_trade_time": "2026-11-09T09:30:12", "percent_change": -2.7027, "prev_day_close": 3.70000004768372}, {"option": "GRND280121P00013000", "bid": 2.15, "bid_size": 35.0, "ask": 2.5, "ask_size": 40.0, "iv": 0.4913, "open_interest": 31.0, "volume": 0.0, "delta": -0.3491, "gamma": 0.0528, "vega": 0.0536, "theta": -0.0029, "rho": -0.0639, "theo": 2.3445, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 3.19, "last_trade_time": "2026-01-26T09:30:10", "percent_change": 0.0, "prev_day_close": 2.22500002384186}, {"option": "GRND280121C00015000", "bid": 2.25, "bid_size": 110.0, "ask": 3.9, "ask_size": 205.0, "iv": 0.6032, "open_interest": 116.0, "volume": 0.0, "delta": 0.5412, "gamma": 0.055, "vega": 0.0572, "theta": -0.0028, "rho": 0.0587, "theo": 2.3576, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 2.64, "last_trade_time": "2026-11-06T10:27:19", "percent_change": 0.0, "prev_day_close": 2.45000004768372}, {"option": "GRND280121P00015000", "bid": 3.3, "bid_size": 10.0, "ask": 3.6, "ask_size": 52.0, "iv": 0.4798, "open_interest": 3.0, "volume": 0.0, "delta": -0.4629, "gamma": 0.0608, "vega": 0.0571, "theta": -0.003, "rho": -0.0793, "theo": 3.4333, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 3.4, "last_trade_time": "2026-10-05T10:04:37", "percent_change": 0.0, "prev_day_close": 3.19999992847443}, {"option": "GRND280121C00017000", "bid": 1.65, "bid_size": 51.0, "ask": 2.0, "ask_size": 38.0, "iv": 0.4834, "open_interest": 65.0, "volume": 7.0, "delta": 0.451, "gamma": 0.0545, "vega": 0.0573, "theta": -0.0029, "rho": 0.0506, "theo": 1.8174, "change": -0.5, "open": 2.3, "high": 2.3, "low": 1.65, "tick": "down", "last_trade_price": 1.65, "last_trade_time": "2026-11-09T11:21:39", "percent_change": -23.2558, "prev_day_close": 2.15000003576279}, {"option": "GRND280121P00017000", "bid": 3.1, "bid_size": 73.0, "ask": 6.0, "ask_size": 96.0, "iv": 0.4287, "open_interest": 8.0, "volume": 0.0, "delta": -0.5642, "gamma": 0.0624, "vega": 0.056, "theta": -0.003, "rho": -0.0904, "theo": 4.8451, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 5.15, "last_trade_time": "2026-04-20T14:14:19", "percent_change": 0.0, "prev_day_close": 5.0}, {"option": "GRND280121C00020000", "bid": 0.0, "bid_size": 0.0, "ask": 3.2, "ask_size": 207.0, "iv": 0.5542, "open_interest": 89.0, "volume": 0.0, "delta": 0.3499, "gamma": 0.0491, "vega": 0.0539, "theta": -0.0029, "rho": 0.0403, "theo": 1.3197, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 3.0, "last_trade_time": "2026-07-29T11:00:27", "percent_change": 0.0, "prev_day_close": 1.85000002384186}, {"option": "GRND280121P00020000", "bid": 5.6, "bid_size": 55.0, "ask": 8.4, "ask_size": 86.0, "iv": 0.4379, "open_interest": 1.0, "volume": 0.0, "delta": -0.683, "gamma": 0.0598, "vega": 0.0498, "theta": -0.0029, "rho": -0.0983, "theo": 7.3035, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 7.35, "last_trade_time": "2026-04-20T14:14:55", "percent_change": 0.0, "prev_day_close": 6.90000009536743}, {"option": "GRND280121C00022000", "bid": 0.0, "bid_size": 0.0, "ask": 3.1, "ask_size": 102.0, "iv": 0.6035, "open_interest": 48.0, "volume": 0.0, "delta": 0.3, "gamma": 0.0448, "vega": 0.0507, "theta": -0.0028, "rho": 0.0348, "theo": 1.1, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.85, "last_trade_time": "2026-10-28T09:30:02", "percent_change": 0.0, "prev_day_close": 1.54999995231628}, {"option": "GRND280121P00022000", "bid": 7.4, "bid_size": 47.0, "ask": 10.1, "ask_size": 78.0, "iv": 0.4345, "open_interest": 4.0, "volume": 0.0, "delta": -0.7446, "gamma": 0.057, "vega": 0.0439, "theta": -0.0027, "rho": -0.0954, "theo": 9.0701, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 9.1, "last_trade_time": "2026-04-20T14:17:35", "percent_change": 0.0, "prev_day_close": 8.55000019073486}, {"option": "GRND280121C00025000", "bid": 0.35, "bid_size": 88.0, "ask": 0.75, "ask_size": 105.0, "iv": 0.464, "open_interest": 373.0, "volume": 267.0, "delta": 0.243, "gamma": 0.0388, "vega": 0.0457, "theta": -0.0027, "rho": 0.0284, "theo": 0.8628, "change": 0.0, "open": 0.85, "high": 0.85, "low": 0.43, "tick": "up", "last_trade_price": 0.7, "last_trade_time": "2026-11-09T11:53:02", "percent_change": 1.70299e-06, "prev_day_close": 0.699999988079071}, {"option": "GRND280121P00025000", "bid": 10.3, "bid_size": 35.0, "ask": 13.2, "ask_size": 55.0, "iv": 0.5129, "open_interest": 1.0, "volume": 0.0, "delta": -0.8191, "gamma": 0.0529, "vega": 0.0344, "theta": -0.0024, "rho": -0.0833, "theo": 11.8313, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 10.11, "last_trade_time": "2026-10-15T14:04:35", "percent_change": 0.0, "prev_day_close": 11.4499998092651}, {"option": "GRND280121C00027000", "bid": 0.0, "bid_size": 0.0, "ask": 2.9, "ask_size": 219.0, "iv": 0.6992, "open_interest": 6.0, "volume": 0.0, "delta": 0.2133, "gamma": 0.0353, "vega": 0.0425, "theta": -0.0026, "rho": 0.0251, "theo": 0.7448, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.8, "last_trade_time": "2026-05-18T09:56:03", "percent_change": 0.0, "prev_day_close": 1.50000002421439}, {"option": "GRND280121P00027000", "bid": 11.5, "bid_size": 49.0, "ask": 15.0, "ask_size": 29.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.8616, "gamma": 0.0517, "vega": 0.0296, "theta": -0.0022, "rho": -0.0809, "theo": 13.723, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 13.5999999046326}, {"option": "GRND280121C00030000", "bid": 0.0, "bid_size": 0.0, "ask": 2.85, "ask_size": 177.0, "iv": 0.7489, "open_interest": 6.0, "volume": 0.0, "delta": 0.1778, "gamma": 0.0307, "vega": 0.0382, "theta": -0.0024, "rho": 0.021, "theo": 0.6072, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 2.0, "last_trade_time": "2026-08-06T13:45:57", "percent_change": 0.0, "prev_day_close": 1.47500002384186}, {"option": "GRND280121P00030000", "bid": 14.5, "bid_size": 40.0, "ask": 19.0, "ask_size": 23.0, "iv": 0.622, "open_interest": 4.0, "volume": 0.0, "delta": -0.9153, "gamma": 0.0484, "vega": 0.0185, "theta": -0.0018, "rho": -0.055, "theo": 16.6207, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 16.0, "last_trade_time": "2025-11-19T15:35:42", "percent_change": 0.0, "prev_day_close": 16.0}, {"option": "GRND280121C00035000", "bid": 0.0, "bid_size": 0.0, "ask": 2.85, "ask_size": 253.0, "iv": 0.8247, "open_interest": 0.0, "volume": 0.0, "delta": 0.1349, "gamma": 0.0246, "vega": 0.0318, "theta": -0.002, "rho": 0.016, "theo": 0.4463, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.45000004768372}, {"option": "GRND280121P00035000", "bid": 19.5, "bid_size": 41.0, "ask": 24.0, "ask_size": 22.0, "iv": 0.7128, "open_interest": 0.0, "volume": 0.0, "delta": -0.9765, "gamma": 0.0286, "vega": 0.0, "theta": -0.0012, "rho": 0.0, "theo": 21.555, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 21.5}], "symbol": "GRND", "security_type": "stock", "exchange_id": 3, "current_price": 13.38, "price_change": -0.16, "price_change_percent": -1.1817, "bid": 12.88, "ask": 13.7, "bid_size": 2000, "ask_size": 1100, "open": 13.22, "high": 13.445, "low": 12.92, "close": 13.38, "prev_day_close": 13.54, "volume": 2913135, "iv30": 48.837, "iv30_change": -7.373, "iv30_change_percent": -13.1169, "seqno": 10406402914, "last_trade_time": "2026-11-09T15:59:59", "tick": "up"}, "symbol": "GRND"}