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Biogen vs Regeneron Pharmaceuticals

Regeneron Pharmaceuticals is the larger business, with $14.34bn of revenue in fiscal 2025 against $9.89bn for Biogen (1.5 times as much). Biogen grew faster (2.2% against 1.0%). Regeneron Pharmaceuticals kept more of each dollar of sales as profit: a net margin of 31.4% against 13.1%. Regeneron Pharmaceuticals carries less debt relative to equity (6.4% against 36.0%).

Latest fiscal yearBiogenBIIB, 2025Regeneron PharmaceuticalsREGN, 2025
Revenue $9.89bn $14.34bn
Revenue growth 2.2% 1.0%
Net income $1.29bn $4.50bn
Operating margin — 24.9%
Net margin 13.1% 31.4%
Return on equity 7.4% 14.9%
Free cash flow $2.05bn $4.08bn
Cash $3.01bn $3.12bn
Total debt $6.57bn $1.99bn
Debt to equity 36.0% 6.4%
Dividend per share — —
Dividend yield — 0.4%
Share buybacks — $3.44bn
Employees 7,500 15,410
Market value $36.79bn $102.62bn
Price vs our value range Within our value range Within our value range
Moat score 87 (Strong) 86 (Strong)
Insider trades, 12 months 1 buys, 4 sales 0 buys, 105 sales

Each figure is from the company's latest annual report and links to the page it comes from. Fiscal years can end on different dates. Market value and the value verdict use the delayed price shown on the stock pages. Not a recommendation.

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Figures from each company's latest annual report filed with the SEC (10-K or 20-F), as reported, with the fiscal year shown. Not investment advice. How we read filings: methodology.