Mr. Market's bullish sentiment towards Biogen is returning. One reason for this is its strengthening position in the multiple sclerosis drugs market, thanks to Vumerity, whose sales reached $212.3 million in Q2 2025, up 28% year-on-year. Also, Biogen's EBIT margin has continued to grow over the past four quarters, reaching 34.6% for the three months ended June 30, 2025.

Biogen (BIIB) shares recorded their fifth consecutive day of increases, accumulating a total return of 14% during this span. The company's market value has increased by approximately $3.3 billion over the past 5 days, bringing its current market capitalization to around $23 billion.

TOKYO and CAMBRIDGE, Mass., Sept. 28, 2025 (GLOBE NEWSWIRE) -- Eisai Co., Ltd. (Headquarters: Tokyo, CEO: Haruo Naito, “Eisai”) and Biogen Inc. (Nasdaq: BIIB, Corporate headquarters: Cambridge, Massachusetts, CEO: Christopher A. Viehbacher, “Biogen”) announced today that humanized anti-soluble aggregated amyloid-beta (Aβ) monoclonal antibody “LEQEMBI®” (brand name in China: “乐意保®”, generic name: lecanemab) has been approved for once every four weeks intravenous (IV) maintenance dosing by the National Medical Products Administration (NMPA) in China.

Biogen Inc. (NASDAQ:BIIB ) Bernstein 2nd Annual Global Healthcare Conference September 24, 2025 11:20 AM EDT Company Participants Priya Singhal - Executive VP & Head of Development Conference Call Participants William Pickering - Sanford C. Bernstein & Co., LLC.

FDA issues CRL to Biogen's regulatory filing seeking approval for a higher dose of SMA drug, Spinraza. The company plans prompt resubmission.

TOKYO and CAMBRIDGE, Mass., Sept. 24, 2025 (GLOBE NEWSWIRE) -- Eisai Co., Ltd. (Headquarters: Tokyo, CEO: Haruo Naito, “Eisai”) and Biogen Inc. (Nasdaq: BIIB, Corporate headquarters: Cambridge, Massachusetts, CEO: Christopher A. Viehbacher, “Biogen”) announced today that the Therapeutic Goods Administration (TGA) of Australia has approved the humanized anti-soluble aggregated amyloid-beta (Aβ) monoclonal antibody “LEQEMBI®” (brand name, generic name: lecanemab) for mild cognitive impairment (MCI) or mild dementia due to Alzheimer's disease (AD) (collectively referred to as early AD) in adults who are either ApoEε4* non-carriers or heterozygous carriers.

The U.S. Food and Drug Administration has declined to approve a higher dose version of Biogen's drug for a rare genetic disorder that causes progressive muscle weakness, dealing a setback to the company's efforts to strengthen its position in a competitive market, the company said on Tuesday.

CAMBRIDGE, Mass., Sept. 23, 2025 (GLOBE NEWSWIRE) -- Biogen Inc. (Nasdaq: BIIB) today announced that the U.S. Food and Drug Administration (FDA) issued a Complete Response Letter (CRL) for the Company's supplemental New Drug Application (sNDA) for the high dose regimen of nusinersen for the treatment of spinal muscular atrophy (SMA). The FDA letter requested an update to the technical information be included in the Chemistry Manufacturing and Controls (CMC) module of the sNDA.

BIIB secures EU approval for Zurzuvae, the first oral treatment for postpartum depression, boosting its long-term growth prospects.

CAMBRIDGE, Mass., Sept. 18, 2025 (GLOBE NEWSWIRE) -- Biogen Inc. (Nasdaq: BIIB) announced the company has entered into a definitive agreement to acquire Massachusetts-based Alcyone Therapeutics. As part of an existing partnership with Alcyone Therapeutics, the companies are advancing ThecaFlex DRx™, an implantable subcutaneous port and catheter device being investigated for the intrathecal delivery of antisense oligonucleotides (ASOs). ThecaFlex DRx™ is designed to provide an alternative to repeat lumbar punctures in chronic intrathecal administration of medicines, which could ease both patient experience and accessibility for a broader population of people living with neurologic disorders.