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 ±3.4% (142.80–152.92) · ATM IV 40.8% · P/C open interest 1.05

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
61.30	64.40				1.00	0.0000	0.000	85	0	0.1500	5	5	170.5%	0.00	0.0000	-0.000
56.10	59.70				1.00	0.0000	0.000	90	0	0.2200		22	153.9%	-0.00	0.0000	-0.000
51.10	54.70				1.00	0.0000	0.000	95	0	0.1800	9	1	185.9%	-0.00	0.0000	-0.001
46.00	49.30				1.00	0.0001	0.000	100	0	0.4600	7	1	191.0%	-0.00	0.0001	-0.001
41.30	44.60			132.8%	1.00	0.0001	0.000	105	0	0.2800	1		157.5%	-0.00	0.0001	-0.002
36.25	39.95			144.7%	1.00	0.0003	0.000	110	0	0.0100		12	95.0%	-0.00	0.0003	-0.004
31.25	34.50				1.00	0.0005	-0.002	115	0	0.1600		1	110.8%	-0.00	0.0005	-0.006
26.35	29.05				1.00	0.0009	-0.005	120	0	0.1600		8	94.3%	-0.00	0.0009	-0.009
21.25	24.80		30	80.6%	0.99	0.0016	-0.010	125	0	0.1700		25	78.8%	-0.01	0.0016	-0.012
16.60	19.20	1	29		0.99	0.0030	-0.015	130	0	0.0500		32	52.8%	-0.01	0.0030	-0.018
11.70	13.95		12		0.98	0.0081	-0.036	135	0	0.1000	23	3,157	43.1%	-0.02	0.0081	-0.038
10.30	13.40	6			0.97	0.0103	-0.046	136	0	0.3800	87	44	51.2%	-0.03	0.0104	-0.048
10.05	11.90	6	1,500	35.8%	0.96	0.0133	-0.059	137	0	0.3300	4	85	46.2%	-0.04	0.0133	-0.061
8.85	11.40			44.0%	0.95	0.0170	-0.077	138	0.1000	0.2700	135	1,288	43.8%	-0.05	0.0170	-0.078
8.05	10.20			40.3%	0.93	0.0214	-0.098	139	0.1000	0.4500	2	18	44.2%	-0.07	0.0215	-0.099
6.55	9.90	3	5	40.8%	0.91	0.0267	-0.122	140	0.0900	0.4000	1,043	1,450	39.1%	-0.10	0.0268	-0.124
5.60	8.15		25		0.88	0.0326	-0.150	141	0.2300	0.6300	50	2	41.5%	-0.12	0.0328	-0.152
5.05	7.35	34	9	32.0%	0.84	0.0391	-0.180	142	0.1900	0.8100	2,031	2,930	39.2%	-0.16	0.0393	-0.182
4.35	6.40		8	33.0%	0.80	0.0459	-0.211	143	0.5500	0.7200	11	628	38.0%	-0.20	0.0461	-0.212
3.10	5.60	5	34	27.9%	0.75	0.0527	-0.240	144	0.6900	0.9400	142	3,201	37.0%	-0.25	0.0530	-0.242
2.79	5.00	107	185	34.4%	0.70	0.0590	-0.266	145	0.9400	1.23	3,565	1,998	36.8%	-0.30	0.0594	-0.268
2.49	3.95	2	3,010	34.3%	0.64	0.0644	-0.286	146	1.22	1.53	2,005	270	35.9%	-0.36	0.0648	-0.288
2.22	3.35	28	11	37.0%	0.57	0.0682	-0.299	147	1.64	2.10	98	340	37.3%	-0.43	0.0686	-0.301
1.69	3.30	196	3,046	40.7%	0.50	0.0700	-0.302	148	1.68	3.45	15	1,310	40.8%	-0.50	0.0705	-0.304
1.16	2.50	21	97	37.3%	0.43	0.0697	-0.294	149	2.48	3.60	2	182	39.7%	-0.57	0.0702	-0.296
1.24	1.56	1,521	3,180	34.9%	0.37	0.0671	-0.276	150	3.10	3.80	103	239	36.2%	-0.64	0.0676	-0.278
0.7100	1.53	41	2,067	37.4%	0.30	0.0626	-0.250	151	3.75	4.85		95	39.3%	-0.70	0.0630	-0.252
0.1700	1.00	479	153	31.7%	0.24	0.0564	-0.218	152	4.25	5.85	2	17	39.8%	-0.76	0.0568	-0.219
0.4000	0.9800	15	109	36.3%	0.21	0.0528	-0.201	152.5	4.45	6.75		3	43.2%	-0.79	0.0533	-0.202
0.0900	1.11	5	49	36.4%	0.19	0.0491	-0.183	153	4.85	7.15		565	43.5%	-0.82	0.0495	-0.184
0.3500	0.5300	278	825	36.5%	0.14	0.0413	-0.148	154	5.35	8.10		39	41.7%	-0.86	0.0416	-0.148
0.2400	0.2800	1,334	1,734	34.6%	0.11	0.0337	-0.116	155	6.20	7.90		139		-0.90	0.0339	-0.116
0.1600	0.3200	1,050	100	37.3%	0.08	0.0266	-0.088	156	7.45	8.60	1	37		-0.93	0.0269	-0.088
0	0.2500	2	19	35.1%	0.06	0.0207	-0.066	157	8.00	10.30	3	22	26.7%	-0.95	0.0211	-0.066
0	0.4400		14	41.3%	0.05	0.0181	-0.058	157.5	8.30	11.35		12	41.8%	-0.96	0.0187	-0.057
0.0300	0.2000	4	39	37.4%	0.04	0.0159	-0.051	158	8.90	11.90	1	16	46.6%	-0.97	0.0166	-0.049
0	0.2000		16	39.2%	0.03	0.0124	-0.040	159	10.25	12.35	1	5	45.2%	-0.98	0.0130	-0.039
0	0.0700	39	74	35.3%	0.02	0.0099	-0.033	160	11.25	12.55		75		-0.98	0.0104	-0.032
0	0.1900		7	44.2%	0.02	0.0082	-0.029	161	12.05	15.00	6	9	61.3%	-0.99	0.0084	-0.028
0	0.3800		93	53.3%	0.02	0.0070	-0.026	162	12.55	15.95		2	50.8%	-0.99	0.0070	-0.026
0	0.1700		27	47.2%	0.02	0.0065	-0.025	162.5	13.75	16.05		2	60.8%	-0.99	0.0065	-0.025
0	0.1700		24	48.5%	0.02	0.0061	-0.025	163	13.65	16.90			55.3%	-0.99	0.0060	-0.024
0	0.1700		98	51.0%	0.01	0.0054	-0.023	164	15.15	17.55		2	62.6%	-0.99	0.0053	-0.023
0	0.1700	2	229	53.5%	0.01	0.0048	-0.022	165	15.80	18.50		11	44.7%	-0.99	0.0046	-0.022
0	0.1700		30	55.9%	0.01	0.0043	-0.022	166	16.55	19.85			56.7%	-0.99	0.0041	-0.022
0	0.1700		42	58.3%	0.01	0.0039	-0.021	167	17.95	20.60			66.1%	-0.99	0.0037	-0.021
0	0.5100		51	72.4%	0.01	0.0037	-0.021	167.5	18.10	21.40			65.3%	-0.99	0.0035	-0.021
0	0.1600		7	60.1%	0.01	0.0035	-0.020	168	19.30	21.80			84.0%	-0.99	0.0033	-0.021
0	0.1600		14	62.5%	0.01	0.0032	-0.019	169	19.50	22.90			63.9%	-0.99	0.0029	-0.021
0	0.1900		129	66.5%	0.01	0.0029	-0.019	170	21.25	23.55			82.2%	-0.99	0.0026	-0.020
0	0.3600		2	76.6%	0.01	0.0027	-0.018	171	21.95	24.95			87.7%	-1.00	0.0024	-0.020
0	0.3600		248	79.1%	0.01	0.0025	-0.018	172	22.20	25.80				-1.00	0.0021	-0.019
0	0.1600		8	70.5%	0.01	0.0024	-0.017	172.5	23.75	26.10			90.3%	-1.00	0.0020	-0.019
0	0.1600		3	71.6%	0.01	0.0023	-0.017	173	24.30	26.95			101.8%	-1.00	0.0019	-0.019
0	0.1600		2	73.8%	0.01	0.0021	-0.016	174	24.25	27.60				-1.00	0.0018	-0.018
0	0.1600		5	76.0%	0.01	0.0019	-0.016	175	25.65	28.55				-1.00	0.0016	-0.018
0	0.1600		12	78.1%	0.01	0.0018	-0.015	176	26.10	29.90				-1.00	0.0014	-0.018
0	0.3600			91.1%	0.01	0.0017	-0.015	177	27.80	30.95			98.7%	-1.00	0.0013	-0.017
0	0.3600			92.3%	0.01	0.0016	-0.014	177.5	28.65	31.05			98.1%	-1.00	0.0012	-0.017
0	0.1600		2	82.4%	0.01	0.0015	-0.014	178	28.45	31.80				-1.00	0.0012	-0.017
0	0.3600			95.7%	0.01	0.0014	-0.013	179	29.40	33.00			86.3%	-1.00	0.0011	-0.017
0	0.1500		5	85.8%	0.01	0.0013	-0.013	180	30.85	33.55			88.4%	-1.00	0.0010	-0.017
0	0.1700		2	89.4%	0.00	0.0012	-0.013	181	31.65	35.00			104.5%	-1.00	0.0009	-0.016
0	0.1600			90.7%	0.00	0.0012	-0.012	182	33.30	35.55			114.3%	-1.00	0.0008	-0.016
0	0.3600			103.6%	0.00	0.0011	-0.012	182.5	33.15	36.50			107.9%	-1.00	0.0008	-0.016
0	0.1600		5	96.8%	0.00	0.0009	-0.011	185	35.65	38.95			111.3%	-1.00	0.0006	-0.016
0	0.5600			128.8%	0.00	0.0007	-0.009	190	41.10	43.55			124.6%	-1.00	0.0003	-0.015
0	0.1700		12	116.7%	0.00	0.0005	-0.007	195	46.15	48.60			139.7%	-1.00	0.0002	-0.015
0	0.1600			124.8%	0.00	0.0004	-0.005	200	50.40	53.60				-1.00	0.0001	-0.014

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 23, 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 23, 2026

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