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BIIB
Biogen Inc. Common Stock
stock NASDAQ

At Close

Jul 29, 2026 3:59:59 PM EDT

209.35USD+1.817%(+3.74)2,399,767

0.00Bid 0.00Ask 0.00Spread

Pre-market

Jul 29, 2026 9:28:30 AM EDT

211.00USD+2.621%(+5.39)3,076

After-hours

Jul 29, 2026 4:39:30 PM EDT

209.23USD-0.055%(-0.12)104

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

Jul 31, 2026 Aug 7, 2026 Aug 14, 2026 Aug 21, 2026 Aug 28, 2026 Sep 4, 2026 Sep 18, 2026 Oct 16, 2026 Dec 18, 2026 Jan 15, 2027 Mar 19, 2027 Jun 17, 2027 Jan 21, 2028

ITM/OTM for Sep 18, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
1,358	3,141	131	5,216

BIIB Sep 18, 2026 Exp. - Volume by Strike

Puts

Calls

BIIB Sep 18, 2026 Exp. - Open Interest by Strike

Puts

Calls

BIIB Sep 18, 2026 Exp. - Max Pain @ $200.00

Puts

Calls

BIIB Sep 18, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
300 C	0	0%	0			BIIB260918C00300000
290 C	1.10	+100.00%	1	2	07-13	BIIB260918C00290000
280 C	0.90	+200.00%	2	14	06-26	BIIB260918C00280000
270 C	0.80	+6.67%	1	22	06-23	BIIB260918C00270000
260 C	1.50	+150.00%	1	466	07-20	BIIB260918C00260000
250 C	1.94	+29.33%	1	49	07-28	BIIB260918C00250000
240 C	2.94	+42.72%	1	574	07-28	BIIB260918C00240000
230 C	4.00	+23.08%	2	529	07-28	BIIB260918C00230000
220 C	6.90	+11.29%	2	415	07-28	BIIB260918C00220000
210 C	10.65	+33.13%	16	1,070	07-28	BIIB260918C00210000
200 C	15.10	+17.15%	1	880	07-28	BIIB260918C00200000
195 C	16.55	+0.30%	3	211	07-28	BIIB260918C00195000
190 C	19.30	-37.62%	1	81	07-28	BIIB260918C00190000
185 C	34.88	+65.31%	2	22	07-01	BIIB260918C00185000
180 C	30.35	+21.40%	1	17	07-28	BIIB260918C00180000
175 C	25.92	-31.91%	2	10	07-14	BIIB260918C00175000
170 C	49.05	+50.18%	1	23	06-29	BIIB260918C00170000
165 C	34.64	-4.07%	1	3	05-26	BIIB260918C00165000
160 C	48.35	+44.76%	1	6	07-28	BIIB260918C00160000
155 C	54.00	+11.73%	1	2	07-13	BIIB260918C00155000
150 C	56.73	-1.17%	3	8	07-16	BIIB260918C00150000
145 C	50.75	+3.57%	1	14	05-19	BIIB260918C00145000
140 C	29.50	+19.43%	4	4	10-01	BIIB260918C00140000
135 C	68.60	+11.91%	1	9	06-12	BIIB260918C00135000
130 C	52.90	-12.10%	2	7	12-12	BIIB260918C00130000
125 C	74.60	+27.70%	4	9	06-08	BIIB260918C00125000
120 C	78.50	+50.96%	1	1	06-05	BIIB260918C00120000
115 C	69.60	+67.31%	1	2	03-20	BIIB260918C00115000
110 C	88.90	0%	1	1	02-09	BIIB260918C00110000
105 C	0	0%	0			BIIB260918C00105000
100 C	105.00	+15.38%	2	3	05-13	BIIB260918C00100000
95 C	106.20	+114.55%	2	22	07-16	BIIB260918C00095000
90 C	53.50	-3.25%	20	21	09-29	BIIB260918C00090000
85 C	0	0%	0			BIIB260918C00085000
80 C	0	0%	0			BIIB260918C00080000
75 C	61.50	+6.96%	1	1	07-24	BIIB260918C00075000
70 C	0	0%	0			BIIB260918C00070000
65 C	135.90	0%	1	1	07-16	BIIB260918C00065000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
300 P	0	0%	0			BIIB260918P00300000
290 P	0	0%	0			BIIB260918P00290000
280 P	0	0%	0			BIIB260918P00280000
270 P	56.80	0%	1	1	07-01	BIIB260918P00270000
260 P	0	0%	0			BIIB260918P00260000
250 P	0	0%	0			BIIB260918P00250000
240 P	0	0%	0			BIIB260918P00240000
230 P	35.27	+3.13%	7	11	05-28	BIIB260918P00230000
220 P	15.30	-42.95%	1	3	06-29	BIIB260918P00220000
210 P	15.40	-4.35%	1	116	07-28	BIIB260918P00210000
200 P	8.00	-20.00%	1	414	07-28	BIIB260918P00200000
195 P	8.10	+9.46%	1	200	07-23	BIIB260918P00195000
190 P	4.80	-23.20%	2	365	07-17	BIIB260918P00190000
185 P	4.74	+26.40%	3	334	07-27	BIIB260918P00185000
180 P	3.30	+15.79%	24	359	07-23	BIIB260918P00180000
175 P	2.25	-10.00%	290	527	07-28	BIIB260918P00175000
170 P	1.88	+56.67%	2	675	07-23	BIIB260918P00170000
165 P	1.10	-29.03%	12	55	07-22	BIIB260918P00165000
160 P	1.25	+56.25%	1	65	07-23	BIIB260918P00160000
155 P	0.35	-66.67%	147	295	07-22	BIIB260918P00155000
150 P	0.58	+132.00%	1	1,064	07-28	BIIB260918P00150000
145 P	0.35	-50.00%	3	11	06-29	BIIB260918P00145000
140 P	0.60	+140.00%	2	22	07-14	BIIB260918P00140000
135 P	0.21	-91.06%	1	30	06-29	BIIB260918P00135000
130 P	0.15	-94.44%	1	202	07-06	BIIB260918P00130000
125 P	0.95	-62.00%	2	89	04-20	BIIB260918P00125000
120 P	0.60	-55.56%	1	277	04-20	BIIB260918P00120000
115 P	1.55	-48.33%	1	16	02-20	BIIB260918P00115000
110 P	0.47	-4.08%	1	107	05-11	BIIB260918P00110000
105 P	2.73	-18.99%	1	74	11-21	BIIB260918P00105000
100 P	5.70	-14.93%	3	6	08-08	BIIB260918P00100000
95 P	0.65	-40.91%	1	12	02-06	BIIB260918P00095000
90 P	1.89	-35.27%	1	1	11-12	BIIB260918P00090000
85 P	0.25	-79.67%	2	1	03-27	BIIB260918P00085000
80 P	0	0%	0			BIIB260918P00080000
75 P	2.45	0%	6	3	06-20	BIIB260918P00075000
70 P	1.75	0%	18	9	06-20	BIIB260918P00070000
65 P	0.20	0%	3	3	06-02	BIIB260918P00065000