Biogen Inc
Biogen Inc (BIIB) Unusual Options Activity Today
BIIB options volume power reached 9x on the previous trading day. The highest reading was on the $245 CALL expiring 2026-10-23.
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Checking BIIB unusual options activity helps you spot when traders are making outsized bets on Biogen Inc before the broader market catches on. Biogen Inc's unusual options activity flags contracts trading at multiples of their average daily volume, often signaling that informed money is positioning ahead of a catalyst. Use our scanner to monitor BIIB unusual options activity today and surface the prints that deserve a second look.
Unusual options flow typically refers to trades where volume vastly exceeds open interest at a given strike, or where total contract volume on a name spikes well above its norm. Watching BIIB unusual options flow today can reveal large block trades, sweeps across exchanges, and aggressive directional bets. Tracking BIIB unusual options volume across calls and puts helps you separate hedging activity from genuinely speculative positioning, and BIIB unusual options flow data becomes especially valuable around earnings, product launches, and macro events.
Biogen Inc. discovers, develops, manufactures, and delivers therapies for treating neurological and neurodegenerative diseases. The company offers TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; and FUMADERM to treat plaque psoriasis. It also provides BENEPALI, an etanercept biosimilar referencing ENBREL; ADUHELM for the treatment of Alzheimer's disease; IMRALDI, an adalimumab biosimilar referencing HUMIRA; and FLIXABI, an infliximab biosimilar referencing REMICADE. In addition, the company offers RITUXAN for treating non-Hodgkin's lymphoma, chronic lymphocytic leukemia (CLL), rheumatoid arthritis, two forms of ANCA-associated vasculitis, and pemphigus vulgaris; RITUXAN HYCELA for non-Hodgkin's lymphoma and CLL; GAZYVA to treat CLL and follicular lymphoma; and OCREVUS for treating relapsing MS and primary progressive MS; and other anti-CD20 therapies.
Further, it develops BIIB135, BIIB061, BIIB091, and BIIB107 for MS and neuroimmunology; Aducanumab, Lecanemab, BIIB076, and BIIB080 to treat Alzheimer's disease and dementia; BIIB067, BIIB078, BIIB105, BIIB100, and BIIB110 to treat neuromuscular disorders; BIIB124, BIIB094, BIIB118, BIIB101, and BIIB122 for treating Parkinson's disease and movement disorders; BIIB125 and BIIB104 for treating neuropsychiatry; Dapirolizumab pegol and BIIB059 to treat immunology related diseases; BIIB093 and BIIB131 to treat acute neurology; BIIB074 for neuropathic pain; and BYOOVIZ, BIIB800, and SB15 biosimilars, which are under various stages of development. The company has collaboration and license agreements with Acorda Therapeutics, Inc.; Alkermes Pharma Ireland Limited; Denali Therapeutics Inc.; Eisai Co., Ltd.; Genentech, Inc.; Neurimmune SubOne AG; Ionis Pharmaceuticals, Inc.; Samsung Bioepis Co., Ltd.; Sangamo Therapeutics, Inc.; and Sage Therapeutics, Inc. Biogen Inc. was founded in 1978 and is headquartered in Cambridge, Massachusetts.
Catalysts rarely arrive without a footprint, and BIIB unusual options activity is often where that footprint shows up first. Our scanner tracks Biogen Inc's unusual options flow in real time, ranks prints by volume-to-open-interest, premium spent, and aggressor side, and separates real conviction from noise. Whether you're looking at BIIB unusual options volume on the call side or chasing put sweeps, Biogen Inc's unusual options flow today is one click away, so put it on your radar before the headlines hit.
| 240.00 | — | 1.55 | 1.55 | 173% | 490 | 62 | 790.32% |
| 225.00 | 0.05 | 2.45 | 1.25 | 55% | 2 | 36 | 5.56% |
| 235.00 | — | 1.35 | 1.35 | 134% | 1 | 22 | 4.55% |
| 230.00 | — | 0.95 | 0.95 | 85% | 3 | 67 | 4.48% |
| 250.00 | — | 1.15 | 1.15 | 212% | 1 | 1,016 | 0.10% |
| 227.50 | 3.70 | 6.40 | 5.05 | 47% | 1 | 1 | 100.00% |
| 225.00 | 1.70 | 4.70 | 3.20 | 49% | 1 | 25 | 4.00% |
| 110.00 | — | 2.15 | 2.15 | 1,000% | 0 | 0 | — |
| 115.00 | — | 2.15 | 2.15 | 1,000% | 0 | 0 | — |
| 120.00 | — | 2.15 | 2.15 | 959% | 0 | 0 | — |
As of October 1, 2026
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