Regeneron Pharmaceuticals Inc (REGN) fair value: what the stock is really worth
As of Nov 4, 2026: fair value (intrinsic value) of Regeneron Pharmaceuticals Inc stock $1,275, price $931, upside +37.0%, quality 74 out of 100. Rating: undervalued. Calculated from audited financials with 26 valuation models and 37 quality factors, updated daily.
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Regeneron Pharmaceuticals Inc
REGN · USThe stock costs 27% less than our calculation considers fair.
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Price vs Fair Value
White line = price, green steps = our fair value per fiscal year. As of Nov 5, 2026.
How to read this chart
60‑month range $479.88 – $1,191 · fair‑value band $617.24 – $1,923 · the $930.67 price screens below the $1,275 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). 1 fiscal year is left out: there the valuation rested on only a fraction of the usual models. As of Nov 5, 2026.
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Company profile
Regeneron Pharmaceuticals, Inc. discovers, invents, develops, manufactures, and commercializes medicines to treat various diseases worldwide.
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The company develops product candidates to treat eye, allergic and inflammatory, cardiovascular, metabolic, neurological, infectious, and rare diseases; and cancer, hematologic conditions.
It also offers EYLEA injections for wet age-related macular degeneration and diabetic macular edema; myopic choroidal neovascularization; diabetic retinopathy; neovascular glaucoma; retinopathy of prematurity; Dupixent injection to treat atopic dermatitis and asthma; Libtayo injection for metastatic or locally advanced cutaneous squamous cell carcinoma; Praluent injection to treat heterozygous familial hypercholesterolemia (HoFH); and Kevzara solution for rheumatoid arthritis.
It has license and collaboration agreement with Bayer for the development and commercialization of EYLEA 8 mg and EYLEA; Alnylam Pharmaceuticals, Inc. to discover, develop, and commercialize RNAi therapeutics for diseases by addressing therapeutic disease targets expressed in the eye and central nervous system; Intellia Therapeutics, Inc. to advance CRISPR/Cas9 gene-editing technology for in vivo therapeutic development for therapies focused on neurological and muscular diseases; Hansoh Pharmaceuticals Group Company Limited to acquire development and commercial rights for HS-20094, a dual GLP-1/GIP receptor; and Tessera Therapeutics, Inc. develops and commercializes TSRA-196, an investigational gene editing therapy for Alpha-1 antitrypsin deficiency.
Additionally, the company has a strategic collaboration with Telix Pharmaceuticals Limited to develop and commercialize radiopharmaceutical therapies. It also has a strategic collaboration with CytomX Therapeutics, Inc. to create conditionally-activated bispecific cancer therapies.
The company was incorporated in 1988 and is based in Tarrytown, New York.
Stock analysis
Regeneron Pharmaceuticals Inc (REGN) currently trades at $930.67, while our model-based Fair Value estimate is $1,275, implying the stock looks roughly 27% undervalued today.
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Valuation
Bull case: the Growth Earnings group reads highest at a median of $1,479 per share, and 13 of the 26 models we run sit above the $930.67 price.
Bear case: the Economic Profit group reads lowest at $441.87, and 13 of the 26 models stay below the price. Data coverage for this calculation is high.
Scenario range: $617.24 (bear) to $1,923 (bull), the price of $930.67 sits inside it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.
Quality & growth
The Quality Score stands at 74/100 (solid quality), in the Healthcare sector.
Healthy Growth: Revenue growth appears healthy and is supported by profitability and cash-flow quality.
Regeneron Pharmaceuticals Inc reported revenue of $14.3B in FY2025 versus $16.1B in FY2021, a compound −2.8%/yr. Reported net income was $4.5B in FY2025, compounding −13.6%/yr from FY2021.
Key figures
Market cap $99.4B Large · P/E ratio 22.9 · P/S ratio 6.40 · EPS (TTM) $39.92 · Dividend yield 0.4% · Net margin 27.9% · Return on equity 14.0% · Return on assets (EBIT) 17.0%.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 79 out of 100 (medium confidence).
What moves the price
The share trades about 4% below its 52-week high and 55% above its 52-week low, currently above its 200-day average.
For context, the median of 10 Healthcare peers we cover trades at 8% fair-value upside, at 37%, REGN screens cheaper than that median.
Fair Value models
All 26 models by family
Quality Score breakdown
It rates the business: profits, how they develop, real cash, balance sheet, investing and share count.
Insider trades
In the last 6 months, 9 officers or directors sold shares worth $49.2M and none bought.
- SaleHuda Y ZoghbiDirector3× since Feb 19, 2026: 9,877 shares, avg. $925.29$9.1MNov 3, 2026
- SaleChristine A PoonDirector7,830 shares at $969.09$7.6MNov 2, 2026
- SaleGeorge L SingDirector21,129 shares at $964.38$20.4MNov 2, 2026
- SaleJoseph J LarosaEVP General Counsel and Secret4,466 shares at $965.49$4.3MNov 2, 2026
- SaleMichael S BrownDirector1,929 shares at $875.00$1.7MOct 30, 202610b5-1 plan
- SaleMarion McCourtEVP Commercial2× since Sep 2, 2026: 3,478 shares, avg. $858.73$3.0MOct 30, 202610b5-1 plan
- SaleKathryn GuariniDirector3× since Aug 10, 2026: 1,200 shares, avg. $850.00$1.0MOct 30, 202610b5-1 plan
- SaleAndrew J MurphyCo-Chief Scientific Officer4,147 shares at $772.70$3.2MOct 14, 202610b5-1 plan
- SaleArthur F RyanDirector5× since Feb 9, 2026: 600 shares, avg. $724.47$434,683Jul 2, 202610b5-1 plan
- SaleJason PitofskySVP Controller2× since Nov 7, 2025: 2,467 shares, avg. $756.31$1.9MFeb 9, 2026
Plus 1 more entries from the last 12 months.
Plus 14 other filings such as grants, option exercises or tax withholding. They are not market purchases or sales.
Sales are often planned (taxes, diversification, 10b5-1 plans). Purchases with their own money are seen as the stronger sign. For information only: not part of the quality score or Fair Value.
Source: SEC Form 4, as of Nov 5, 2026. All filings at the SEC ↗
Revenue & earnings trend
Growth Forecast
Watch REGN, get fair value alerts →
Recent news
- Mary Tyler Moore Vision Initiative Welcomes Regeneron and Adaptive Sensory Technology to Its Consortium
- Why Regeneron (REGN) Might be Well Poised for a Surge
- REGN vs. ILMN: Which Stock Is the Better Value Option?
- Regeneron Announces Investor Conference Presentations
Compare Regeneron Pharmaceuticals Inc with another stock
Price, fair value, quality and upside side by side.
Peer Groupⓘ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.Biotechnology · 559 stocks
Valuation Multiplesvs Biotechnology median · lower = cheaper
Strength profile in five axes (Snowflake)
Context: sector, industry, market
- Is the Health Care sector expensive or cheap?
- P/E, EV/EBITDA and margins by industry (reference tables)
- Price/FCF by industry
- Debt-to-equity by industry
- PEG screener for stocks with fair value
- Undervalued stocks: US Stocks
- Valuation of the USA market
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
Similar stocks
10 more Biotechnology stocks, each showing price versus our Fair Value estimate.
| Stock | Price | Fair Value | vs Fair Value | Compare |
|---|---|---|---|---|
| Incyte Corporation INCY | $122.85 | $199.23 | +62% | vs REGN |
| Genmab A/S GMAB | kr 3,635 | kr 4,068 | +12% | vs REGN |
| Vertex Pharmaceuticals Incorporated VRTX | $549.04 | $608.47 | +11% | vs REGN |
| WuXi Biologics (Cayman) Inc 2269 | HK$48.68 | HK$53.55 | +10% | vs REGN |
| Samsung Biologics Co 207940 | 1,520,000 KRW | 1,644,500 KRW | +8% | vs REGN |
| argenx SE ARGX | $931.38 | $908.40 | −2% | vs REGN |
| BeOne Medicines AG 6160 | HK$248.60 | HK$153.56 | −38% | vs REGN |
| BioNTech SE BNTX | $90.70 | $48.45 | −47% | vs REGN |
| Celltrion, Inc 068270 | 215,000 KRW | 74,945 KRW | −65% | vs REGN |
| Royalty Pharma plc RPRX | $67.56 | $19.01 | −72% | vs REGN |
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