XBI option chain State Street SPDR S&P Biotech ETF

Expiration Cboe delayed options data · as of 18:39 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 ±8.3% (150.34–177.69) · ATM IV 30.3% · P/C open interest 0.74

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
62.35	66.10		10		1.00	0.0003	0.000	100	0	2.13			93.6%	-0.00	0.0003	-0.003
57.90	61.25			66.0%	0.99	0.0004	0.000	105	0	2.13			85.9%	-0.00	0.0004	-0.003
52.80	56.20			55.6%	0.99	0.0006	0.000	110	0	2.13			78.5%	-0.01	0.0006	-0.004
47.80	51.15			47.4%	0.99	0.0008	0.000	115	0	0.4100		4	52.1%	-0.01	0.0008	-0.006
43.15	46.20			49.2%	0.99	0.0012	0.000	120	0	0.1000		21	38.4%	-0.01	0.0013	-0.008
37.75	41.35			38.5%	0.98	0.0019	0.000	125	0	0.2900		13	39.3%	-0.02	0.0019	-0.010
33.20	35.60		3		0.97	0.0030	0.000	130	0.0800	0.2600		249	35.2%	-0.03	0.0030	-0.015
29.05	30.35		1	31.8%	0.95	0.0047	-0.000	135	0.3000	0.4600	9	266	35.2%	-0.04	0.0047	-0.021
24.30	25.75		5	32.0%	0.92	0.0073	-0.013	140	0.5300	0.7500	25	906	33.7%	-0.07	0.0073	-0.030
23.00	25.20			31.9%	0.92	0.0079	-0.016	141	0.4900	1.05		21	34.1%	-0.08	0.0080	-0.032
22.10	24.30			31.9%	0.91	0.0086	-0.019	142	0.5700	1.12		5	33.7%	-0.09	0.0086	-0.035
21.80	23.05		275	31.5%	0.90	0.0093	-0.022	143	0.6800	1.32		25	34.1%	-0.10	0.0093	-0.037
20.70	22.25		2	32.4%	0.89	0.0100	-0.025	144	0.7800	1.46	1	16	34.0%	-0.11	0.0100	-0.040
20.20	21.30		5	32.7%	0.88	0.0107	-0.028	145	0.9000	1.50		2,003	33.4%	-0.12	0.0108	-0.042
18.60	20.80			31.8%	0.87	0.0115	-0.032	146	1.17	1.76	67	157	34.3%	-0.13	0.0116	-0.045
17.80	19.90		4	31.7%	0.85	0.0123	-0.035	147	1.22	1.78	1	1,529	33.2%	-0.15	0.0124	-0.048
17.45	18.65		21	31.9%	0.84	0.0131	-0.038	148	1.17	1.93	1	71	32.2%	-0.16	0.0132	-0.050
16.60	17.60			30.9%	0.83	0.0139	-0.042	149	1.53	2.08	1	3,439	32.7%	-0.17	0.0140	-0.053
16.00	16.75		262	30.9%	0.81	0.0146	-0.045	150	1.75	2.29	4	850	32.7%	-0.19	0.0148	-0.056
15.05	16.25			31.7%	0.80	0.0154	-0.048	151	1.80	2.54	5	60	32.2%	-0.20	0.0156	-0.058
14.00	15.30		1	30.2%	0.78	0.0162	-0.051	152	2.08	2.75		44	32.2%	-0.22	0.0164	-0.061
13.30	14.70		14	30.8%	0.76	0.0170	-0.054	153	2.49	3.00	1	41	32.6%	-0.24	0.0171	-0.063
12.50	13.95		4	30.5%	0.74	0.0177	-0.057	154	2.78	3.15	117	44	32.2%	-0.26	0.0179	-0.065
12.00	13.00		99	30.4%	0.73	0.0185	-0.060	155	2.86	3.55		452	31.9%	-0.27	0.0186	-0.067
11.45	12.45		1	31.1%	0.71	0.0192	-0.062	156	3.20	3.95	1	1,209	32.2%	-0.29	0.0194	-0.069
10.35	11.75			29.9%	0.69	0.0198	-0.065	157	3.30	4.40		389	31.8%	-0.31	0.0200	-0.071
10.00	11.05		3	30.5%	0.67	0.0204	-0.067	158	4.05	4.30	6	322	31.6%	-0.33	0.0207	-0.072
9.40	11.25		22	32.5%	0.65	0.0210	-0.069	159	3.75	4.90		720	30.5%	-0.36	0.0213	-0.073
8.85	9.75		246	30.4%	0.62	0.0215	-0.070	160	4.70	5.15	47	2,170	31.4%	-0.38	0.0218	-0.075
8.15	9.25		8	30.3%	0.60	0.0219	-0.072	161	4.60	5.75		388	30.6%	-0.40	0.0222	-0.075
8.10	8.55	11	14	31.1%	0.58	0.0223	-0.073	162	5.40	6.10		183	31.1%	-0.42	0.0226	-0.076
7.15	8.10		33	30.3%	0.56	0.0226	-0.074	163	5.65	6.85	5	222	31.2%	-0.44	0.0230	-0.076
6.70	7.65	2	29	30.6%	0.54	0.0228	-0.075	164	5.75	7.25		178	30.1%	-0.47	0.0232	-0.076
6.35	6.95	8	1,594	30.3%	0.51	0.0230	-0.075	165	6.55	7.70	4	2,401	30.6%	-0.49	0.0234	-0.076
5.80	6.40		237	29.9%	0.49	0.0230	-0.075	166	7.45	8.20		41	31.3%	-0.51	0.0234	-0.076
5.20	6.80		257	31.4%	0.47	0.0230	-0.075	167	7.30	8.75		27	29.7%	-0.54	0.0234	-0.075
4.90	5.55	1	258	29.8%	0.44	0.0229	-0.075	168	8.45	9.30		111	30.8%	-0.56	0.0234	-0.074
4.35	5.45		301	30.1%	0.42	0.0227	-0.074	169	9.00	10.20		76	31.4%	-0.58	0.0232	-0.073
4.45	4.75	15	921	30.4%	0.40	0.0225	-0.073	170	9.75	10.40		105	30.6%	-0.61	0.0230	-0.071
3.80	4.55		258	30.0%	0.38	0.0222	-0.072	171	10.35	12.10		1	33.0%	-0.63	0.0227	-0.070
3.45	4.40		2,569	30.4%	0.36	0.0217	-0.071	172	11.00	12.00		127	31.1%	-0.65	0.0223	-0.068
3.10	4.40		251	31.0%	0.34	0.0213	-0.070	173	11.05	12.55		16	29.2%	-0.67	0.0219	-0.066
3.00	3.40	1	260	29.8%	0.32	0.0208	-0.068	174	11.75	14.10	5	1	31.2%	-0.69	0.0214	-0.063
2.81	3.15	19	517	30.0%	0.30	0.0202	-0.066	175	13.15	13.90	4	1	30.6%	-0.71	0.0208	-0.061
2.45	2.86	5	319	29.6%	0.28	0.0196	-0.064	176	13.65	14.65			29.9%	-0.73	0.0203	-0.058
2.19	2.89		310	30.2%	0.26	0.0190	-0.062	177	14.35	16.25			32.0%	-0.75	0.0196	-0.056
2.07	2.53	23	492	30.1%	0.24	0.0183	-0.060	178	15.55	16.45		1	31.5%	-0.77	0.0190	-0.053
1.89	2.59	1	25	30.9%	0.23	0.0176	-0.058	179	16.10	17.45		2	31.4%	-0.78	0.0184	-0.050
1.67	1.99	3	476	29.6%	0.21	0.0169	-0.055	180	17.15	18.10			31.7%	-0.80	0.0176	-0.047
1.41	2.11		16	30.2%	0.20	0.0162	-0.053	181	17.25	19.35			30.7%	-0.82	0.0170	-0.044
1.24	2.00		263	30.4%	0.18	0.0154	-0.051	182	18.65	20.20			32.6%	-0.83	0.0162	-0.041
1.08	1.79		18	30.1%	0.17	0.0147	-0.048	183	18.95	21.30			31.6%	-0.85	0.0155	-0.038
0.9400	1.64		45	30.0%	0.16	0.0140	-0.046	184	20.15	21.95			32.1%	-0.86	0.0148	-0.035
0.9800	1.38	2	6,249	30.2%	0.14	0.0132	-0.043	185	21.45	22.65			33.1%	-0.87	0.0141	-0.032
0.6300	0.7300	26	42	30.0%	0.09	0.0097	-0.032	190	25.80	27.20		20	32.9%	-0.93	0.0105	-0.017
0.3100	0.4500		48	29.9%	0.06	0.0068	-0.022	195	30.50	32.35			36.2%	-0.97	0.0090	-0.001
0.0400	0.2800		8,776	28.6%	0.04	0.0045	-0.015	200	34.50	38.00			37.6%	-0.99	0.0044	-0.028
0.0700	0.3300		17	32.8%	0.02	0.0030	-0.010	205	39.65	43.00			42.4%	-1.00	0.0000	-0.066
0	0.1200		60	30.2%	0.01	0.0020	-0.007	210	44.70	48.00			46.4%	-1.00	0.0000	-0.076
0	0.2400		9	35.8%	0.01	0.0014	-0.005	215	49.50	53.00			48.1%	-1.00	0.0000	-0.079
0	2.13			56.2%	0.01	0.0011	-0.004	220	54.50	58.00			51.3%	-1.00	0.0000	-0.079
0	2.13			59.4%	0.01	0.0009	-0.004	225	59.85	63.00			57.5%	-1.00	0.0000	-0.079

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 — Oct 16, 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 — Oct 16, 2026

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