Biogen Inc (BIIB) Fair Value & Analysis
Healthcare · US · Market cap $30.8B
Biogen Inc
BIIB · US
Fair value as of: Jul 17, 2026
From 26 valuation models · updated 21 days ago
Share price +0.3% over the past month.
A solid business, currently priced close to our fair value.
What matters now
- The price sits close to our fair value, market and models broadly agree here, little valuation tension.
- Our model range runs from $135.46 (bear) to $240.92 (bull), base $189.51. The closer the price sits to the lower half, the larger the margin of safety.
- Quality 71/100 (solid quality) with high evidence: the data supports the verdict.
Price vs Fair Value (5 years)
White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Jul 17, 2026.
How to read this chart
60‑month range $113.38 – $414.71 · fair‑value band $135.46 – $240.92 · the $206.28 price screens above the $189.51 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Jul 17, 2026.
Analysis
Biogen Inc (BIIB) currently trades at $206.28, while our model-based Fair Value estimate is $189.51, implying the stock looks roughly 8.1% fairly valued today. We read business quality at 71/100 (solid quality), in the Healthcare sector. Bear case: priced above our estimate, the market already discounts strong expectations. Bull case: above-average quality can justify a premium, the entry price still matters most (evidence: high).
Over the trailing twelve months, Biogen Inc generated revenue of $9.9B at a net margin of 13.8%. Revenue grew 1.9% year over year. It earns a return on equity of 7.7%. Net debt stands at $3.9B. Fundamentals as of Jul 17, 2026
Our scenario range runs from $135.46 (bear case) to $240.92 (bull case); at $206.28, the current price sits within that range. Bear and bull are the same models run on conservative and optimistic assumptions (margins, growth, valuation multiples), so a plausible valuation range, not a price target. The share trades near its 52-week high and 70% above its 52-week low, currently above its 200-day average. For context, the median of 10 Healthcare peers we cover trades at -25% fair-value upside, at -8%, BIIB screens cheaper than that median.
Fair Value models
Each model estimates fair value its own way; the Fair Value above is the evidence-weighted blend. Evidence (0–100) measures how completely this model’s inputs are available: well-fed models carry more weight in the blend. The spread across models is intentional, each one stresses a different value driver; dividend models, for instance, come out structurally low when payout is small.
All 26 models by family
Widest divergence: DCF Models ($255.25) versus Dividend Discount ($0.0800). Highest evidence: Growth DCF (80).
Key figures & financial health
More key figures
Figures from reported company fundamentals · as of Jul 17, 2026. TTM = trailing twelve months.
Quality Score breakdown
Of which business quality 63 · Market factors (momentum, volatility) 79
Non-valuation factor families (profitability, growth, cashflow, financial strength, momentum …), each academically grounded. Valuation itself sits in the Fair Value and is deliberately excluded here to avoid double-counting.
About the company
Biogen Inc. discovers, develops, manufactures, and delivers therapies in the United States, Europe, Germany, Asia, and internationally.
Full company description
Biogen Inc. discovers, develops, manufactures, and delivers therapies in the United States, Europe, Germany, Asia, and internationally. The company provides TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, and TYSABRI for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; SKYCLARYS to treat Friedreich's Ataxia; QALSODY for treating amyotrophic lateral sclerosis; FUMADERM to treat plaque psoriasis; BENEPALI, an etanercept biosimilar referencing ENBREL; IMRALDI, an adalimumab biosimilar referencing HUMIRA; FLIXABI, an infliximab biosimilar referencing REMICADE. It offers LEQEMBI for the treatment of Alzheimer's disease; ZURZUVAE for the treatment of postpartum depression; RITUXAN to treat 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; OCREVUS for relapsing MS and primary progressive MS; LUNSUMIO to treat relapsed or refractory follicular lymphoma; glofitamab for aRelapsed or refractory diffuse large B-cell lymphoma; and other anti-CD20 therapies. Biogen Inc. has collaboration and license agreements with Merz Therapeutics; Alkermes Pharma Ireland Limited; Denali Therapeutics Inc.; UCB; Eisai Co., Ltd.; Genentech, Inc.; Neurimmune SubOne AG; Ionis Pharmaceuticals, Inc.; Samsung Bioepis; and Sage Therapeutics, Inc., as well as collaborations with Stoke Therapeutics, Inc. for the development and commercialization of zorevunersen, a disease modifying medicine for the treatment of Dravet syndrome; Dayra Therapeutics, Inc. to develop oral macrocyclic peptides; Vanqua Bio, Inc. for developing Vanqua's preclinical oral C5aR1 antagonist compound; City Therapeutics, Inc. to develop select novel RNAi therapies; and ALTEOGEN Inc. to develop subcutaneous (SC) formulations of biologics utilizing ALT-B4. The company was founded in 1978 and is headquartered in Cambridge, Massachusetts.
Company description, as reported by the company or data provider.
Revenue & earnings trend
FY2021 – FY2025 · reported fiscal years
Biogen Inc reported revenue of $9.8B in FY2025 versus $11.0B in FY2021, a compound −2.8%/yr. Reported net income was $1.3B in FY2025, compounding −4.5%/yr from FY2021.
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Recent news
External third-party headlines (Yahoo Finance, Reuters and others), not an editorial selection.
- BIIB Q2 Deep Dive: Portfolio Expansion and Pipeline Readouts Drive Upbeat Outlook
- Biogen (BIIB) Is Up 5.8% After Earnings Compression Amid Revenue Growth – Is Profitability Peaking?
- Why Biogen Stock Topped the Market Today
Peer Group
Drug Manufacturers - General · 75 stocks
How this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.
Valuation Multiples vs Drug Manufacturers - General median · lower = cheaper
Snowflake
Five quick dimensions, each 0 to 100: VALUE (fair-value potential), FUTURE (revenue growth), PAST (return on equity), HEALTH (low debt), DIVIDEND (yield). Green = this stock, grey = typical sector peer.
Insider activity: 66/100
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
ESG scores are not available for this stock yet. Values and ESG data are contextual and can differ between providers.
Similar stocks
10 more Drug Manufacturers - General stocks, each showing price versus our Fair Value estimate (as of Jul 17, 2026).
| Stock | Price | Fair Value | vs Fair Value |
|---|---|---|---|
| Eli Lilly and Company LLY | $1,182 | $396.77 | -66% |
| Johnson & Johnson, JNJ | $257.59 | $169.04 | -34% |
| AbbVie Inc ABBV | $254.49 | $67.72 | -73% |
| Roche Holding 1RO | €377.80 | €280.03 | -26% |
| Merck & Co MRK | €108.08 | €121.54 | +12% |
| Novartis AG NVSN | 2,742 MXN | 2,379 MXN | -13% |
| AstraZeneca PLC AZN | $171.61 | $129.54 | -25% |
| Novo Nordisk A/S NOVOB | kr 329.90 | kr 409.46 | +24% |
| Amgen Inc AMGN | $363.39 | $252.02 | -31% |
| Gilead Sciences, Inc GILD | $134.28 | $146.50 | +9% |
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How we calculate Fair Value
Each company is valued through a stack of independent intrinsic-value models (DCF variants, residual-income, multiples and more), blended into one family-balanced consensus and weighted by how much trustworthy data backs it. A separate quality layer scores the fundamentals. Every input is real reported data, nothing guessed.
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