Stocks / BIIB vs RGEN

BIIB vs RGEN: Which Stock Is the Better Buy?

Biogen Inc. and Repligen Corporation side by side — fundamentals from SEC filings, refreshed nightly. Sector: Healthcare.

BIIB is the larger company ($30.0B vs $7.4B). On the fundamentals, RGEN grows revenue faster (15.0% vs -6.0%); BIIB earns a higher net margin (13.1% vs 6.6%); BIIB has the stronger return on equity (7.1% vs 2.3%). Both carry 1 potential red flag in the filings. Full numbers below — the stronger figure on each row is in green.

AI verdict — BIIB vs RGEN, read from the filings

The stronger business, the cheaper stock, and the risks — synthesised from both companies’ SEC filings, every figure computed not guessed. Not investment advice.

 Biogen Inc. (BIIB)Repligen Corporation (RGEN)
Market cap$30.0B$7.4B
Revenue (latest FY)$9.89B$738.26M
Net income (latest FY)$1.29B$48.89M
Revenue growth (5y CAGR)-6.0%15.0%
Net margin13.1%6.6%
Return on equity7.1%2.3%
P/E ratio36.1144.0
Dividend yield
Profitable years (of last 10)109
Positive free cash flowYesYes

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See the full BIIB vs RGEN breakdown

Both companies across 19 years of income statement, balance sheet and cash flow — with ratios, health checks and Ask, the SEC-grounded research assistant. Free, no account needed.

Open BIIB's full financials →   Open RGEN's full financials →

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Frequently asked questions

Which is bigger, BIIB or RGEN?

Biogen Inc. is larger by market capitalization — $30.0B versus $7.4B.

Which grows faster, BIIB or RGEN?

Over the last five fiscal years, Repligen Corporation grew revenue faster — 15.0%/yr versus -6.0%/yr, computed from SEC-filed statements.

Where does this data come from?

All figures are computed from official SEC filings (10-K), refreshed nightly. This is a data comparison, not investment advice.

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