Is BIIB (Biogen Inc.) Halal or Haram?

Based on our AAOIFI-standard shariah screening, BIIB is Halal and considered permissible for Muslim investors. It passed all 4 of 4 compliance screens including business activity review, debt-to-market-cap ratio (24.84% vs ≤33% threshold), interest income ratio (0.89% vs ≤5% threshold), and cash & securities ratio (13.64% vs ≤33% threshold).

Biogen Inc. is a leading biotechnology company that discovers, develops, and delivers therapies for severe neurological and neurodegenerative diseases. Its prominent portfolio includes multiple sclerosis treatments like TECFIDERA and AVONEX, as well as SPINRAZA for spinal muscular atrophy and ADUHELM for Alzheimer's disease. For Muslim investors, Biogen represents a fully compliant healthcare stock, achieving a Halal status across all four AAOIFI screening criteria. The company's core operations in life-saving drug manufacturing align perfectly with Islamic ethical values, while its financial structure comfortably passes all screening thresholds. From an Islamic finance perspective, Biogen showcases strong financial discipline with a debt-to-market cap ratio of 24.8%, keeping it safely below the 33% limit. Additionally, its interest-bearing securities and cash equivalents sit at a conservative 13.6%, and interest income is minimal at 0.89%, ensuring investors are largely shielded from riba-related earnings. While Biogen's current operations and financials are clearly halal, Muslim investors should continue to monitor its debt levels during major acquisitions or clinical trial funding phases. Staying updated on their quarterly financial ratios will ensure the stock remains compliant within AAOIFI boundaries. Biogen Inc. operates in the Healthcare sector under the Drug Manufacturers - General industry and is headquartered in Cambridge, MA, US. The company is led by CEO Christopher A. Viehbacher and employs approximately 7,605 people.

BIIB was screened using AAOIFI-based shariah compliance criteria. Four tests are applied: (1) Business Activity — the company's core business must not derive primary income from haram (prohibited) activities such as alcohol, gambling, tobacco, or interest-based finance. (2) Debt-to-Market-Cap — total debt must not exceed 33% of market capitalization. (3) Interest Income — interest income must not exceed 5% of total revenue. (4) Cash & Securities — cash and interest-bearing securities must not exceed 33% of market cap. BIIB passed 4 of these 4 screens.

Although BIIB passes all shariah screens, it does earn $87.8M in interest income (0.89% of revenue). Many scholars recommend purifying this portion by donating the equivalent percentage of any dividends received to charity. For example, if you receive $100 in dividends, you would donate approximately $0.89 to purify the income.

BIIB was last screened on 2026-04-29. Shariah compliance status can change as companies report new financial data, acquire new businesses, or shift revenue streams. We recommend checking back periodically for the most up-to-date screening results.