XBI option chain State Street SPDR S&P Biotech ETF

Expiration Cboe delayed options data · as of 12:40 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 ±13.7% (142.60–187.80) · ATM IV 31.8% · P/C open interest 1.09

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
80.50	84.60		3		0.99	0.0002	0.000	83	0	2.13		8	79.2%	-0.00	0.0002	-0.002
79.50	83.65		26		0.99	0.0003	0.000	84	0	1.30		51	70.9%	-0.00	0.0002	-0.002
78.50	82.65		151		0.99	0.0003	0.000	85	0	1.19		1,622	68.7%	-0.00	0.0002	-0.002
77.50	81.65		25		0.99	0.0003	0.000	86	0	1.61		614	71.5%	-0.00	0.0003	-0.002
76.60	80.65		28	49.3%	0.99	0.0003	0.000	87	0	0.8600		31	62.9%	-0.00	0.0003	-0.002
75.60	79.70		5		0.99	0.0003	0.000	88	0	0.8500		27	61.8%	-0.00	0.0003	-0.002
74.50	78.70		38		0.99	0.0003	0.000	89	0	1.40		1,336	66.5%	-0.00	0.0003	-0.003
73.50	77.70		40		0.99	0.0004	0.000	90	0	0.6500		4,740	57.4%	-0.00	0.0003	-0.003
72.55	76.70		168		0.99	0.0004	0.000	91	0	1.00		868	60.6%	-0.01	0.0004	-0.003
71.55	75.75		47		0.99	0.0004	0.000	92	0	0.8200		2,002	57.7%	-0.01	0.0004	-0.003
70.55	74.75		18	42.5%	0.99	0.0004	0.000	93	0	0.9500		4	58.2%	-0.01	0.0004	-0.003
69.60	73.75		391		0.99	0.0004	0.000	94	0	1.23		145	59.9%	-0.01	0.0004	-0.003
68.60	72.80		41	45.8%	0.99	0.0005	0.000	95	0	0.4300		540	49.6%	-0.01	0.0005	-0.003
68.00	71.80		7	45.6%	0.99	0.0005	0.000	96	0	1.35		15	59.1%	-0.01	0.0005	-0.003
66.65	70.85		41	36.4%	0.99	0.0005	0.000	97	0	0.8400		16	53.3%	-0.01	0.0005	-0.004
65.65	69.85		235		0.99	0.0006	0.000	98	0	0.8500		33	52.5%	-0.01	0.0006	-0.004
64.65	68.85		1,090		0.99	0.0006	0.000	99	0	1.40		29	56.6%	-0.01	0.0006	-0.004
64.00	67.90		124	42.4%	0.99	0.0006	0.000	100	0	0.4500		302	45.8%	-0.01	0.0006	-0.004
63.00	66.90		14	41.1%	0.99	0.0007	0.000	101	0	1.40		30	54.7%	-0.01	0.0007	-0.004
62.00	65.95		27	40.9%	0.98	0.0007	0.000	102	0	0.1400		198	37.8%	-0.01	0.0007	-0.004
61.00	64.95		40	39.6%	0.98	0.0008	0.000	103	0	0.1500		70	37.5%	-0.01	0.0008	-0.005
60.00	64.00		11	38.2%	0.98	0.0008	0.000	104	0	0.1700		896	37.3%	-0.01	0.0008	-0.005
59.60	63.05	6	143	45.3%	0.98	0.0009	0.000	105	0.0700	0.1900		615	38.8%	-0.01	0.0009	-0.005
58.15	61.95		30	38.8%	0.98	0.0010	0.000	106	0.0600	0.2000		75	38.0%	-0.01	0.0010	-0.005
57.00	61.10		7	37.6%	0.98	0.0010	0.000	107	0.0900	0.2200		154	38.3%	-0.01	0.0010	-0.006
56.00	60.10		144	36.4%	0.98	0.0011	0.000	108	0.0800	0.4400		247	37.7%	-0.02	0.0011	-0.006
55.00	59.10		15	35.1%	0.98	0.0012	0.000	109	0.0100	0.2200		169	35.3%	-0.02	0.0012	-0.006
54.90	58.00		337	43.7%	0.98	0.0013	0.000	110	0.1400	0.2300		1,112	37.1%	-0.02	0.0013	-0.007
53.90	56.50		5	37.7%	0.98	0.0014	0.000	111	0.0100	0.2600	4	103	34.7%	-0.02	0.0014	-0.007
52.95	56.10		30	42.8%	0.97	0.0015	0.000	112	0.1400	0.2600	5	71	36.1%	-0.02	0.0015	-0.008
51.50	55.15		4	38.4%	0.97	0.0016	0.000	113	0	0.7100		79	38.8%	-0.02	0.0016	-0.008
50.50	54.35		6	39.2%	0.97	0.0017	0.000	114	0	2.15		147	47.5%	-0.02	0.0017	-0.009
50.10	52.65		3,032	37.3%	0.97	0.0018	0.000	115	0.2100	0.4700		406	37.1%	-0.03	0.0018	-0.009
49.10	51.75		2	37.2%	0.97	0.0019	0.000	116	0	2.49		114	47.4%	-0.03	0.0020	-0.010
47.95	51.35		11	39.6%	0.96	0.0021	0.000	117	0	0.8600		306	37.1%	-0.03	0.0021	-0.010
47.20	49.80		14	36.5%	0.96	0.0022	0.000	118	0.2700	0.9000		162	38.6%	-0.03	0.0022	-0.011
46.25	49.25		62	39.0%	0.96	0.0024	0.000	119	0.1100	2.51		86	45.2%	-0.04	0.0024	-0.012
45.20	48.50		17.8K	39.2%	0.96	0.0026	0.000	120	0.2300	2.65	1	3,436	45.4%	-0.04	0.0026	-0.012
43.70	47.60		64	35.8%	0.95	0.0027	0.000	121	0.1800	1.06		272	36.6%	-0.04	0.0028	-0.013
43.45	46.65		42	39.3%	0.95	0.0029	0.000	122	0.2200	1.32		212	37.5%	-0.05	0.0030	-0.014
42.55	45.15		208	36.3%	0.95	0.0031	0.000	123	0.0700	1.38		412	36.3%	-0.05	0.0031	-0.015
41.50	44.00		615	34.2%	0.94	0.0033	-0.001	124	0.2700	1.50		1,656	37.1%	-0.05	0.0034	-0.016
40.55	43.75	26	300	37.4%	0.94	0.0035	-0.002	125	0.5200	1.10	16	872	35.5%	-0.06	0.0036	-0.017
39.65	42.85	1	102	37.3%	0.93	0.0038	-0.003	126	0.5400	1.52	1	97	36.8%	-0.06	0.0038	-0.018
38.90	41.65		421	36.6%	0.93	0.0040	-0.005	127	0.3000	1.88		113	36.5%	-0.07	0.0040	-0.018
37.75	41.05		120	36.6%	0.92	0.0042	-0.006	128	0.6300	1.78		70	36.5%	-0.07	0.0043	-0.019
36.90	39.65		448	34.7%	0.92	0.0045	-0.007	129	0.6200	1.83	1	150	35.9%	-0.08	0.0045	-0.021
36.00	39.20		1,050	36.2%	0.91	0.0047	-0.009	130	0.8800	1.64	1	483	35.3%	-0.08	0.0048	-0.022
35.05	38.50		13	36.5%	0.91	0.0050	-0.010	131	0.8200	2.07		19	35.8%	-0.09	0.0050	-0.023
34.05	37.60		82	35.9%	0.90	0.0053	-0.012	132	0.8400	3.55		24	39.6%	-0.09	0.0053	-0.024
33.35	36.75		7	36.3%	0.90	0.0055	-0.013	133	1.02	2.44		55	35.9%	-0.10	0.0056	-0.025
32.60	35.00		217	33.8%	0.89	0.0058	-0.015	134	1.13	2.31		217	34.9%	-0.11	0.0059	-0.026
31.60	35.00		11.2K	35.8%	0.88	0.0061	-0.016	135	1.24	2.73		394	35.6%	-0.11	0.0062	-0.027
30.75	34.10		98	35.6%	0.88	0.0064	-0.017	136	1.37	2.55		13	34.6%	-0.12	0.0065	-0.028
30.05	32.75		5	34.4%	0.87	0.0067	-0.019	137	1.36	2.85		342	34.5%	-0.13	0.0068	-0.029
29.00	32.40		14	35.0%	0.86	0.0070	-0.020	138	1.69	2.73	20	194	34.1%	-0.14	0.0071	-0.030
28.40	31.10		13	34.3%	0.85	0.0073	-0.022	139	1.51	2.99		38	33.4%	-0.14	0.0074	-0.032
27.40	30.75		643	34.9%	0.84	0.0076	-0.023	140	2.22	2.83		318	33.8%	-0.15	0.0077	-0.033
26.75	29.65		55	34.4%	0.84	0.0079	-0.024	141	2.02	3.60		63	34.2%	-0.16	0.0080	-0.034
25.75	28.80		23	33.8%	0.83	0.0082	-0.026	142	2.04	3.95		94	34.1%	-0.17	0.0083	-0.035
24.95	28.25		99	34.2%	0.82	0.0085	-0.027	143	2.30	4.45		62	34.8%	-0.18	0.0086	-0.036
24.15	26.65		2,018	32.3%	0.81	0.0088	-0.029	144	2.49	4.05		26	33.4%	-0.19	0.0089	-0.037
23.40	26.75	1	5,777	34.0%	0.80	0.0091	-0.030	145	2.70	4.00		396	32.7%	-0.20	0.0093	-0.038
22.80	25.40		8	33.1%	0.79	0.0094	-0.031	146	2.80	4.45		55	32.8%	-0.21	0.0096	-0.039
21.95	25.05		30	33.6%	0.78	0.0098	-0.032	147	3.80	4.30	1,159	975	33.4%	-0.22	0.0099	-0.040
20.95	24.20		43	32.8%	0.77	0.0101	-0.034	148	3.90	4.75	17	74	33.4%	-0.23	0.0102	-0.041
20.40	23.15		27	32.4%	0.76	0.0104	-0.035	149	3.85	5.10	2	172	32.9%	-0.24	0.0105	-0.041
19.65	22.70		3,191	32.7%	0.75	0.0107	-0.036	150	4.35	5.50		1,534	33.4%	-0.25	0.0108	-0.042
16.20	19.30	2	368	32.2%	0.69	0.0121	-0.041	155	5.05	7.25		729	31.9%	-0.31	0.0123	-0.046
13.55	16.25	38	799	32.4%	0.62	0.0132	-0.045	160	6.85	9.60	3	3,761	32.0%	-0.38	0.0135	-0.048
11.70	13.15	3	2,373	32.7%	0.56	0.0140	-0.047	165	9.95	10.40	1,098	3,768	30.8%	-0.45	0.0143	-0.049
9.00	11.25	14	3,897	32.5%	0.49	0.0142	-0.048	170	11.60	14.40	116	339	31.1%	-0.52	0.0147	-0.049
6.75	8.65	10	62	30.1%	0.43	0.0141	-0.048	174	14.85	16.65		92	32.0%	-0.58	0.0146	-0.047
7.05	7.80	2,164	2,140	30.3%	0.42	0.0140	-0.048	175	15.35	17.20		948	31.6%	-0.59	0.0146	-0.047
6.05	7.95		114	30.1%	0.40	0.0139	-0.047	176	15.30	18.55		46	31.6%	-0.60	0.0145	-0.046
5.70	7.90		23	30.4%	0.39	0.0138	-0.047	177	16.50	18.75		26	31.7%	-0.62	0.0144	-0.046
5.35	7.85	2	474	30.8%	0.38	0.0137	-0.047	178	16.60	19.30		10	30.7%	-0.63	0.0143	-0.045
4.90	7.50		131	30.5%	0.37	0.0135	-0.046	179	17.30	19.95		51	30.6%	-0.64	0.0142	-0.044
4.85	7.45	27	3,885	31.2%	0.35	0.0134	-0.046	180	18.00	20.60		10	30.5%	-0.66	0.0140	-0.043
4.40	7.10		2	30.9%	0.34	0.0132	-0.045	181	19.25	21.50			31.6%	-0.67	0.0139	-0.043
4.20	7.15			31.5%	0.33	0.0130	-0.044	182	19.80	22.70			32.1%	-0.68	0.0138	-0.042
3.95	6.30		1	30.6%	0.32	0.0128	-0.044	183	20.15	22.75			30.4%	-0.69	0.0136	-0.041
3.65	6.15			30.7%	0.31	0.0126	-0.043	184	21.45	23.65			31.5%	-0.71	0.0134	-0.040
4.05	5.95	3	1,114	31.8%	0.29	0.0124	-0.043	185	21.65	24.45			30.7%	-0.72	0.0132	-0.039
2.65	4.60	1	222	30.8%	0.24	0.0113	-0.038	190	26.15	28.85			32.5%	-0.78	0.0122	-0.033
1.96	2.94	1	776	29.5%	0.19	0.0100	-0.034	195	30.35	33.10			32.9%	-0.83	0.0110	-0.028
1.47	2.44	11	9,400	30.2%	0.15	0.0086	-0.029	200	34.25	37.25		1,340	31.4%	-0.87	0.0098	-0.021
0.9500	1.91		9	30.0%	0.12	0.0073	-0.025	205	39.10	42.10			33.3%	-0.91	0.0085	-0.016
0.5900	2.03		167	31.7%	0.09	0.0061	-0.021	210	44.05	46.80			34.9%	-0.94	0.0076	-0.009
0.6700	0.9400		62	30.4%	0.07	0.0050	-0.017	215	48.65	51.10			32.9%	-0.97	0.0074	-0.003
0.4600	0.7500		219	30.6%	0.06	0.0041	-0.014	220	52.70	56.85			33.5%	-0.99	0.0047	-0.011
0.3400	0.5100		104	30.4%	0.05	0.0034	-0.012	225	57.70	61.80				-1.00	0.0011	-0.028
0.2900	1.08	1	2	35.2%	0.04	0.0028	-0.010	230	62.60	66.80				-1.00	0.0000	-0.034
0	1.80		76	39.1%	0.03	0.0024	-0.009	235	68.25	71.80			42.9%	-1.00	0.0000	-0.035
0	1.26		2	38.1%	0.03	0.0020	-0.008	240	72.60	76.80			42.8%	-1.00	0.0000	-0.036
0.0100	1.65		25	41.9%	0.02	0.0017	-0.007	245	77.60	81.80			42.5%	-1.00	0.0000	-0.036

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 — Dec 18, 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 — Dec 18, 2026

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