XBI option chain State Street SPDR S&P Biotech ETF

Expiration Cboe delayed options data · as of 22:05 UTC

Each row is one strike. The left half is the call, the right half the put. Bid/ask are what buyers and sellers currently quote; volume is contracts traded this session; open interest is standing contracts. The highlighted row sits closest to the stock price.

This expiration prices a move of about ±7.6% (136.63–159.09) · ATM IV 32.1% · P/C open interest 3.67

CALLS								Strike	PUTS
Bid	Ask	Vol	OIThe number of option contracts currently outstanding at a strike or expiration. High open interest shows where positions are concentrated.	IV	ΔModel sensitivity of an option's price to a $1 move in the stock; also used as a rough moneyness scale (a 25-delta option is well out of the money).	Γ	Θ		Bid	Ask	Vol	OI	IV	Δ	Γ	Θ
46.05	50.15			66.1%	0.99	0.0008	-0.001	100	0	0.3900			66.1%	-0.01	0.0007	-0.006
41.20	45.20			62.4%	0.99	0.0012	-0.004	105	0	0.2200			54.0%	-0.01	0.0012	-0.009
36.15	40.15			52.4%	0.98	0.0018	-0.008	110	0	0.2500			48.4%	-0.02	0.0018	-0.012
31.20	34.70				0.97	0.0029	-0.012	115	0.0100	0.3300			44.2%	-0.02	0.0028	-0.016
26.75	29.60			38.5%	0.96	0.0044	-0.018	120	0.0800	0.3800	30		39.8%	-0.04	0.0044	-0.022
21.80	25.65		7	42.8%	0.94	0.0070	-0.027	125	0.2800	0.4800	99	1,792	36.5%	-0.06	0.0070	-0.029
20.80	24.25			38.0%	0.93	0.0077	-0.029	126	0.3600	0.6500		68	37.8%	-0.06	0.0077	-0.031
20.00	23.55			40.3%	0.93	0.0085	-0.031	127	0.3900	1.01		181	39.4%	-0.07	0.0085	-0.034
18.95	22.45			37.6%	0.92	0.0093	-0.034	128	0.2700	0.9100		484	36.3%	-0.08	0.0093	-0.036
18.65	21.15			38.7%	0.91	0.0102	-0.036	129	0.5400	0.8900		54	36.6%	-0.09	0.0102	-0.039
18.45	19.80	11	30	39.7%	0.90	0.0112	-0.040	130	0.5700	0.9800	11	2,662	35.8%	-0.10	0.0112	-0.042
16.40	19.90			38.3%	0.89	0.0122	-0.043	131	0.5600	1.05		230	34.6%	-0.11	0.0122	-0.045
15.80	18.20			34.9%	0.87	0.0132	-0.046	132	0.8700	1.23	13	71	35.9%	-0.12	0.0133	-0.048
15.70	17.30			38.3%	0.86	0.0144	-0.050	133	0.7300	1.40	2,016	8,625	34.4%	-0.14	0.0144	-0.052
15.00	16.40			38.3%	0.84	0.0155	-0.054	134	0.9400	1.63	22	334	34.9%	-0.15	0.0155	-0.056
13.80	15.50		10	36.0%	0.83	0.0167	-0.058	135	1.31	1.84	51	923	35.8%	-0.17	0.0167	-0.059
13.15	15.10		4	38.1%	0.81	0.0178	-0.061	136	1.51	1.85	10	106	34.9%	-0.19	0.0179	-0.063
11.45	14.55		1	35.1%	0.79	0.0190	-0.065	137	1.60	2.08	15	128	34.3%	-0.21	0.0190	-0.067
11.30	13.05		7	34.5%	0.77	0.0201	-0.069	138	1.81	2.25	4	481	33.9%	-0.23	0.0201	-0.070
10.05	12.25		23	32.3%	0.75	0.0211	-0.072	139	2.02	2.49	5	71	33.6%	-0.25	0.0212	-0.074
10.30	11.55		19	35.7%	0.73	0.0222	-0.076	140	2.30	2.94	113	1,161	34.1%	-0.27	0.0222	-0.077
9.35	10.80		44	34.5%	0.70	0.0231	-0.079	141	2.56	3.20	3	503	33.7%	-0.30	0.0232	-0.080
8.90	10.20		73	35.3%	0.68	0.0240	-0.082	142	2.82	3.50	2	722	33.3%	-0.32	0.0241	-0.083
7.10	9.50		2	31.4%	0.65	0.0248	-0.084	143	3.15	3.75	3	1,413	32.8%	-0.34	0.0249	-0.085
7.70	8.80		63	34.8%	0.63	0.0255	-0.086	144	3.45	4.45	1	408	33.5%	-0.37	0.0256	-0.087
6.25	8.95	22	70	34.4%	0.60	0.0261	-0.088	145	4.05	4.45	2,382	10.2K	32.7%	-0.40	0.0263	-0.088
6.55	7.70	14	66	34.8%	0.58	0.0266	-0.089	146	4.50	5.20	10	360	33.6%	-0.42	0.0268	-0.090
6.25	6.95	2	40	34.7%	0.55	0.0270	-0.090	147	4.75	5.40	25	3,252	32.2%	-0.45	0.0272	-0.090
4.90	6.40	101	23	32.1%	0.52	0.0272	-0.090	148	5.15	6.00		292	32.2%	-0.48	0.0274	-0.091
4.50	5.90	33	29	32.2%	0.49	0.0274	-0.090	149	5.65	6.45	2	724	31.9%	-0.51	0.0276	-0.090
4.05	5.45	149	285	32.2%	0.47	0.0274	-0.089	150	6.10	7.60	2	819	33.2%	-0.53	0.0276	-0.090
3.30	5.80	9	69	33.4%	0.44	0.0273	-0.088	151	6.60	8.35	20	398	33.5%	-0.56	0.0275	-0.089
3.00	4.90	11	118	32.1%	0.41	0.0270	-0.087	152	7.20	8.35		323	31.6%	-0.59	0.0273	-0.087
3.65	4.90			35.1%	0.40	0.0268	-0.086	152.5	7.50	9.45			33.9%	-0.60	0.0271	-0.086
3.40	4.30	45	138	33.7%	0.39	0.0266	-0.085	153	7.80	9.75		512	33.8%	-0.61	0.0269	-0.085
3.05	3.60	58	61	32.6%	0.36	0.0261	-0.083	154	8.45	10.40		127	33.8%	-0.64	0.0264	-0.083
2.69	3.20	83	607	32.2%	0.34	0.0255	-0.081	155	9.05	10.95		760	33.1%	-0.67	0.0259	-0.081
2.07	3.10	24	56	31.6%	0.31	0.0248	-0.078	156	9.80	11.70		131	33.3%	-0.69	0.0252	-0.078
2.25	2.90	30	125	33.3%	0.29	0.0240	-0.075	157	10.40	11.95	24	84	31.3%	-0.71	0.0244	-0.075
1.86	2.42	13	186	32.1%	0.27	0.0232	-0.072	158	11.15	13.15		70	32.8%	-0.74	0.0235	-0.071
1.65	2.52	25	60	33.3%	0.24	0.0222	-0.068	159	11.85	13.15		89	29.6%	-0.76	0.0226	-0.068
1.35	2.00	201	760	31.8%	0.22	0.0212	-0.065	160	12.70	14.70		14	32.7%	-0.78	0.0216	-0.065
1.22	2.06	67	543	33.0%	0.20	0.0201	-0.061	161	13.50	15.40	20	217	32.1%	-0.80	0.0206	-0.061
0.8800	1.85	31	159	32.1%	0.18	0.0190	-0.057	162	14.35	16.25		40	32.3%	-0.82	0.0195	-0.057
0.8800	1.38	1	174	31.4%	0.17	0.0179	-0.054	163	15.15	17.40		3	33.5%	-0.84	0.0184	-0.053
0.8500	1.30	2	219	32.1%	0.15	0.0168	-0.050	164	15.15	18.25			28.9%	-0.85	0.0173	-0.050
0.6800	1.08	36	600	31.4%	0.14	0.0157	-0.047	165	16.90	19.15		115	33.7%	-0.87	0.0162	-0.046
0.5500	1.08	4	148	31.9%	0.12	0.0146	-0.043	166	17.30	20.40		25	33.1%	-0.88	0.0151	-0.043
0.3800	0.8900	1	524	30.9%	0.11	0.0135	-0.040	167	17.70	21.40			30.5%	-0.90	0.0141	-0.040
0.3600	0.7600		25	31.0%	0.10	0.0125	-0.037	168	19.45	21.85			33.0%	-0.91	0.0131	-0.036
0.4200	0.8600		263	33.1%	0.09	0.0115	-0.034	169	20.30	22.85		19	33.1%	-0.92	0.0121	-0.033
0.3200	0.5100	9	1,693	30.9%	0.08	0.0105	-0.031	170	21.40	23.55		83	32.6%	-0.93	0.0112	-0.031
0.1500	0.7700		207	32.6%	0.07	0.0096	-0.029	171	22.35	24.70		23	34.5%	-0.94	0.0104	-0.028
0.2600	0.5200		208	32.4%	0.06	0.0088	-0.026	172	22.70	25.65			27.2%	-0.95	0.0095	-0.026
0.0900	0.6800		30	33.3%	0.06	0.0080	-0.024	173	24.25	26.85			37.0%	-0.95	0.0088	-0.024
0.1500	0.3700		24	31.6%	0.05	0.0073	-0.022	174	24.55	27.75			26.9%	-0.96	0.0081	-0.021
0.1500	0.3500	3	266	32.3%	0.04	0.0067	-0.020	175	25.50	28.75				-0.97	0.0074	-0.019
0.0200	0.5000	2	36	33.4%	0.04	0.0061	-0.018	176	26.20	30.20			31.9%	-0.97	0.0067	-0.018
0.0200	0.3300		1	31.9%	0.04	0.0055	-0.017	177	27.10	31.05				-0.98	0.0064	-0.016
0	0.5100		86	35.0%	0.03	0.0050	-0.015	178	28.15	32.20			32.4%	-0.98	0.0060	-0.015
0	0.2900		2	32.6%	0.03	0.0046	-0.014	179	29.30	33.00			30.9%	-0.98	0.0056	-0.013
0.0800	0.1500	1	271	32.2%	0.03	0.0042	-0.013	180	30.10	34.10				-0.99	0.0050	-0.011
0	0.2700		28	33.8%	0.02	0.0038	-0.012	181	31.10	35.10				-0.99	0.0043	-0.010
0	0.4600		1	37.7%	0.02	0.0035	-0.011	182	32.10	36.25			35.6%	-0.99	0.0036	-0.010
0.0100	0.1200		263	31.8%	0.02	0.0032	-0.011	183	33.10	37.25			36.4%	-0.99	0.0031	-0.009
0	0.4400		2	39.0%	0.02	0.0030	-0.010	184	34.10	38.25			37.2%	-1.00	0.0026	-0.008
0	0.1000		213	32.1%	0.02	0.0027	-0.009	185	35.10	39.20			35.5%	-1.00	0.0021	-0.007
0	0.4200		5	40.2%	0.02	0.0025	-0.009	186	36.10	40.20			36.3%	-1.00	0.0015	-0.007
0	0.2200		7	37.1%	0.01	0.0023	-0.008	187	37.10	41.25			39.6%	-1.00	0.0011	-0.007
0	0.4100		2	41.6%	0.01	0.0021	-0.007	188	38.10	42.10				-1.00	0.0007	-0.007
0	0.4100			42.4%	0.01	0.0020	-0.007	189	39.10	42.55				-1.00	0.0004	-0.007
0	0.0700		596	33.9%	0.01	0.0018	-0.007	190	40.10	44.05				-1.00	0.0002	-0.007
0	0.0500		1,071	35.6%	0.01	0.0013	-0.005	195	45.50	49.00			49.4%	-1.00	0.0000	-0.007

Strikes shown: within ±50% of the underlying price. Intrinsic value = max(0, price − strike) for calls, max(0, strike − price) for puts; extrinsic = option price − intrinsic. Greeks and IV as computed by the exchange feed.

Volatility smile — Nov 20, 2026

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Implied volatility per strike for this expiration. Out-of-the-money puts usually price higher IV than calls — the skew.

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XBI option chain State Street SPDR S&P Biotech ETF

Volatility smile — Nov 20, 2026

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