Is BIIB halal?
Biogen Inc.
Not halal
Biogen Inc. did not pass AAOIFI screening. The failed check is shown below.
Checked: 14 October 2026
Exchange
NASDAQ
Price
232.65
Day
-1.15%
Market cap
$34.34B
Industry
Drug Manufacturers - General
Sector
Healthcare
What the company does
Biogen makes neurology medicines: multiple sclerosis (Tysabri, Tecfidera), Spinraza (SMA), Leqembi (Alzheimer's, with Eisai), Skyclarys and Zurzuvae. Its money comes from prescription-drug sales.
What was checked
The AAOIFI standard has four steps: business activity first, then three financial ratios. Fail one and the stock is not halal.
Business activity
No prohibited activity
Interest-bearing debt / market cap
limit 30%
Interest-bearing debt $8.36B ÷ 36-month average market cap $27.11B = 30.8%
30.8%
Fail
Cash & investments / market cap
limit 30%
Cash + interest-bearing securities $1.28B ÷ 36-month average market cap $27.11B = 4.7%
4.7%
Pass
Non-compliant income / total revenue
limit 5%
Interest income $125.00M ÷ annual revenue $9.89B (2025) = 1.3%
1.3%
Pass
Figures from the company's filings (2026-06-30), USD. Market cap is a 36-month average (the S&P Shariah index approach), so a one-day price move does not flip the verdict. Today's market cap: $34.34B.
For information (AAOIFI 3/1 note): cash + receivables are 11.5% of total assets (2026-06-30). AAOIFI recommends tangible assets of at least one third — this figure does not affect the verdict, and other major screeners do not apply it either.
In the lists
- In the S&P 500
- 0.05% weight · #286 of 503
- Held by funds
- SPUS 0.09% · HLAL 0.09%
Superinvestors
SEC 13F, 2026 Q3. Up to 45 days delayed.Held by 3 superinvestors · Average reported price: $216.06
- Hillman Capital Management$5.2M3.8%
- Samantha McLemorePatient Capital Management$61.3M2.0%
- Sarah KettererCauseway Capital Management$60.1M0.7%
Halal stocks in the same industry
The largest halal stocks in Drug Manufacturers - General — for comparison.
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- Halal investingBlogWhy a company's cash affects whether its stock is halalLots of cash sounds like a good sign — but halal screening checks it separately. What counts, what doesn't, and where we are stricter than AAOIFI.
- Halal investingBlogAAOIFI Shariah Standard No. 21 in plain languageThe most widely used standard for halal stock screening: the two-step test, the three ratios and how it differs from other methods.
Halal is the first question. The second: when to enter?
Our scanner watches 1454 halal stocks around the clock and fires a signal with entry, TP and SL when a technical setup completes. The full signal history — with outcomes — is public.
This is neither investment advice nor a fatwa. Screening is based on public financial statements and AAOIFI standard No. 21; data may lag. For a personal decision consult your own scholar.