XBI option chain State Street SPDR S&P Biotech ETF

Expiration Cboe delayed options data · as of 09:46 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 ±4.8% (140.79–154.99) · ATM IV 34.6% · P/C open interest 8.55

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
61.10	64.30				1.00	0.0000	0.000	85	0	1.16			183.4%	-0.00	0.0000	-0.001
56.40	59.80			136.6%	1.00	0.0001	0.000	90	0	0.5600			146.9%	-0.00	0.0001	-0.002
51.10	54.60				1.00	0.0002	0.000	95	0	0.1600			110.7%	-0.00	0.0002	-0.003
46.15	49.60				1.00	0.0003	0.000	100	0	0.5600			119.3%	-0.00	0.0003	-0.004
41.85	44.00				1.00	0.0005	-0.002	105	0	0.3600			99.0%	-0.00	0.0005	-0.007
36.30	39.45				0.99	0.0008	-0.005	110	0	0.1700			78.0%	-0.00	0.0008	-0.009
31.75	34.25			59.6%	0.99	0.0013	-0.009	115	0	0.1800			68.2%	-0.01	0.0013	-0.013
26.20	29.35				0.99	0.0022	-0.014	120	0	0.6100		3	71.4%	-0.01	0.0022	-0.018
21.40	24.55				0.98	0.0038	-0.021	125	0	0.3400		23	53.5%	-0.02	0.0038	-0.024
16.45	19.85		8	42.3%	0.96	0.0073	-0.035	130	0	0.5500	2	15.4K	47.2%	-0.04	0.0073	-0.037
11.70	15.20	2	3	40.6%	0.92	0.0150	-0.064	135	0.1300	0.7100	8	198	39.9%	-0.08	0.0151	-0.066
11.20	13.75			38.7%	0.90	0.0173	-0.073	136	0	0.9000	4		38.2%	-0.10	0.0174	-0.074
10.40	12.50			35.6%	0.89	0.0198	-0.082	137	0.3900	0.7700	3	7	38.4%	-0.11	0.0199	-0.084
9.70	11.50		2	36.1%	0.87	0.0224	-0.092	138	0.2000	1.16	17	32	37.7%	-0.13	0.0225	-0.093
8.15	11.35			36.0%	0.84	0.0252	-0.102	139	0.6400	0.9500	1	22	36.9%	-0.16	0.0253	-0.104
8.35	9.60		39	36.7%	0.82	0.0281	-0.113	140	0.9400	1.03	3,080	18.8K	36.9%	-0.18	0.0282	-0.114
6.70	8.90			31.2%	0.79	0.0309	-0.123	141	0.8900	1.44		18	36.4%	-0.21	0.0311	-0.124
6.90	8.20			38.0%	0.75	0.0338	-0.133	142	1.19	1.62	294	450	36.3%	-0.25	0.0340	-0.134
6.40	7.20		42	37.5%	0.72	0.0364	-0.142	143	0.7800	2.37	713	247	35.0%	-0.28	0.0366	-0.143
4.75	7.40	41	40	36.9%	0.68	0.0388	-0.150	144	1.71	2.40	111	64	36.8%	-0.32	0.0391	-0.151
4.25	5.90		12	33.1%	0.64	0.0410	-0.156	145	1.93	2.66	46	408	35.4%	-0.36	0.0412	-0.157
3.65	5.90	7	87	36.1%	0.60	0.0427	-0.161	146	2.36	3.65	6	1,266	38.5%	-0.40	0.0430	-0.162
3.80	4.60		51	35.9%	0.56	0.0439	-0.164	147	2.74	3.95	10	39	37.4%	-0.44	0.0442	-0.165
3.30	3.90	48	24	35.0%	0.51	0.0446	-0.164	148	3.25	3.75	13	178	34.1%	-0.49	0.0449	-0.165
2.80	3.65	33	76	35.9%	0.47	0.0448	-0.163	149	3.65	4.95	140	414	36.7%	-0.53	0.0451	-0.164
2.28	3.95		2	37.0%	0.45	0.0447	-0.161	149.5	3.45	4.60	9	24	31.2%	-0.56	0.0450	-0.162
2.43	2.73	37	118	33.7%	0.42	0.0444	-0.159	150	3.80	5.70	2,011	6,544	35.4%	-0.58	0.0447	-0.160
1.88	2.68	27	35	34.5%	0.38	0.0434	-0.153	151	4.70	5.70	41	124	33.7%	-0.62	0.0438	-0.154
1.31	2.31	2	7	33.1%	0.34	0.0419	-0.146	152	5.25	7.00	6	1,317	36.4%	-0.67	0.0423	-0.147
1.52	1.97	45	33	34.0%	0.32	0.0410	-0.142	152.5	5.60	6.80		11	33.5%	-0.69	0.0413	-0.142
0.9400	2.19	11	11	33.6%	0.30	0.0399	-0.137	153	6.00	7.70		85	36.8%	-0.71	0.0403	-0.137
1.05	1.60	2	8	33.8%	0.26	0.0375	-0.127	154	6.75	8.60		61	37.9%	-0.75	0.0379	-0.127
0.8600	1.38	38	1,642	34.1%	0.22	0.0348	-0.116	155	7.40	9.25		80	36.5%	-0.78	0.0351	-0.116
0.5900	1.00	32	61	32.2%	0.19	0.0318	-0.104	156	8.15	10.30	10	38	38.0%	-0.82	0.0322	-0.105
0.2500	1.00	41	75	31.9%	0.16	0.0286	-0.093	157	9.00	10.60	1	6	34.4%	-0.85	0.0291	-0.093
0.3300	0.8400	89	18	32.4%	0.15	0.0270	-0.087	157.5	9.30	11.00		6	33.1%	-0.86	0.0275	-0.088
0.3200	1.08	43	280	35.5%	0.13	0.0255	-0.082	158	9.80	12.05		27	38.7%	-0.87	0.0260	-0.082
0.2300	0.8100	106	488	34.5%	0.11	0.0224	-0.071	159	10.75	12.70	11	11	37.8%	-0.89	0.0230	-0.072
0.1800	0.5900	60	339	33.7%	0.09	0.0195	-0.062	160	11.50	13.60	11	91	36.6%	-0.91	0.0201	-0.062
0.1300	0.4500	34	434	33.3%	0.08	0.0169	-0.053	161	12.10	14.55	10	19	33.0%	-0.93	0.0175	-0.054
0.1400	0.3100	4	147	33.2%	0.06	0.0145	-0.046	162	13.10	15.60	10	11	35.6%	-0.94	0.0152	-0.047
0.0300	0.4000		74	33.8%	0.06	0.0135	-0.043	162.5	13.80	15.80			35.0%	-0.95	0.0141	-0.043
0.1100	0.2500	3	100	32.2%	0.05	0.0125	-0.040	163	13.70	17.00		11	37.5%	-0.96	0.0132	-0.041
0	0.2800		33	33.4%	0.04	0.0107	-0.035	164	15.25	17.60	1	11	41.4%	-0.96	0.0115	-0.035
0.0100	0.3800	4	134	37.3%	0.04	0.0093	-0.031	165	15.85	18.80		4	40.2%	-0.97	0.0101	-0.031
0	0.2700		6	36.4%	0.03	0.0081	-0.028	166	16.45	19.95			36.3%	-0.98	0.0090	-0.028
0	0.1600		60	34.8%	0.03	0.0071	-0.025	167	18.05	20.70		9	45.3%	-0.98	0.0079	-0.025
0	0.1500		10	35.1%	0.03	0.0067	-0.024	167.5	18.30	21.30			43.5%	-0.98	0.0074	-0.024
0	0.2300		75	38.4%	0.03	0.0063	-0.023	168	19.15	21.55			46.2%	-0.98	0.0069	-0.023
0	0.2200		345	39.6%	0.02	0.0056	-0.021	169	19.45	21.95				-0.99	0.0061	-0.021
0	0.1900	5	162	40.1%	0.02	0.0051	-0.020	170	20.90	23.55			44.0%	-0.99	0.0055	-0.020
0	0.2000		6	41.8%	0.02	0.0046	-0.019	171	21.45	24.80				-0.99	0.0049	-0.018
0	0.2000		6	43.2%	0.02	0.0042	-0.018	172	22.10	26.00				-0.99	0.0044	-0.018
0	0.1900		8	43.5%	0.02	0.0040	-0.018	172.5	22.60	26.55				-0.99	0.0041	-0.017
0	0.1900		7	44.2%	0.02	0.0039	-0.018	173	24.20	26.20			46.7%	-0.99	0.0039	-0.017
0	0.1800	10	72	45.2%	0.02	0.0036	-0.017	174	24.60	27.95			52.6%	-0.99	0.0034	-0.016
0	0.1700		65	46.2%	0.01	0.0033	-0.016	175	25.65	28.55				-0.99	0.0031	-0.016
0	0.1700		35	52.6%	0.01	0.0023	-0.014	180	31.20	33.80			70.7%	-1.00	0.0018	-0.013
0	0.3700		18	66.1%	0.01	0.0017	-0.012	185	36.25	38.80			79.2%	-1.00	0.0010	-0.012
0	0.1200		91	61.9%	0.01	0.0012	-0.010	190	40.40	43.85				-1.00	0.0005	-0.012
0	0.1600		2	69.8%	0.01	0.0009	-0.008	195	46.20	48.60			88.3%	-1.00	0.0002	-0.011
0	0.3600			84.2%	0.00	0.0007	-0.007	200	50.10	54.10				-1.00	0.0001	-0.011

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 30, 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 30, 2026

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