Price Alert

Biogen Inc. (BIIB)

NASDAQ: BIIB · Real-Time Price · USD

135.91

-2.69 (-1.94%)

At close: Aug 18, 2025, 3:59 PM

136.85

0.69%

After-hours: Aug 18, 2025, 07:48 PM EDT

BIIB Option Overview

Overview for all option chains of BIIB. As of August 19, 2025, BIIB options have an IV of 38.7% and an IV rank of 15.23%. The volume is 6,785 contracts, which is 473.15% of average daily volume of 1,434 contracts. The volume put-call ratio is 0.32, indicating a bullish sentiment in the market.

Implied Volatility

Implied Volatility (30d)

38.7%

IV Rank

15.23%

Historical Volatility

34.92%

IV Low

35.83% on Sep 26, 2024

IV High

54.69% on Apr 09, 2025

Open Interest (OI)

Today's Open Interest

54,549

Put-Call Ratio

0.59

Put Open Interest

20,165

Call Open Interest

34,384

Open Interest Avg (30-day)

50,373

Today vs Open Interest Avg (30-day)

108.29%

Option Volume

Today's Volume

6,785

Put-Call Ratio

0.32

Put Volume

1,659

Call Volume

5,126

Volume Avg (30-day)

1,434

Today vs Volume Avg (30-day)

473.15%

Option Chain Statistics

This table provides a comprehensive overview of all BIIB options grouped by their expiration dates.

Expiration	Call Vol	Put Vol	P/C Vol	Call OI	Put OI	P/C OI	Implied Volatility	Max Pain
Aug 22, 2025	3,509	826	0.24	1,075	426	0.4	61.36%	132
Aug 29, 2025	156	52	0.33	741	311	0.42	40.6%	125
Sep 05, 2025	17	6	0.35	120	110	0.92	36.8%	132
Sep 12, 2025	43	23	0.53	89	222	2.49	34.35%	136
Sep 19, 2025	206	328	1.59	9,273	4,922	0.53	36.39%	120
Sep 26, 2025	12	22	1.83	37	24	0.65	33.81%	135
Oct 17, 2025	678	59	0.09	3,507	1,381	0.39	44.94%	130
Jan 16, 2026	175	286	1.63	13,915	7,449	0.54	53.26%	125
Mar 20, 2026	280	38	0.14	1,377	586	0.43	38.26%	130
Apr 17, 2026	4	9	2.25	2	1	0.5	36.51%	130
Jun 18, 2026	5	3	0.6	717	447	0.62	36.87%	130
Sep 18, 2026	0	0	0	47	232	4.94	36.2%	135
Dec 18, 2026	5	0	0	1,240	1,466	1.18	36.77%	145
Jan 15, 2027	36	7	0.19	2,244	2,588	1.15	36.2%	135