Stocks / BIIB vs PFE

BIIB vs PFE: Which Stock Is the Better Buy?

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

On the fundamentals, PFE grows revenue faster (8.5% vs -6.0%); BIIB earns a higher net margin (13.1% vs 12.4%); PFE has the stronger return on equity (9.0% vs 7.1%). On the filings, BIIB carries fewer potential red flags (1 vs 2). Full numbers below — the stronger figure on each row is in green.

AI verdict — BIIB vs PFE, 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)Pfizer, Inc. (PFE)
Market cap$30.0B
Revenue (latest FY)$9.89B$62.58B
Net income (latest FY)$1.29B$7.77B
Revenue growth (5y CAGR)-6.0%8.5%
Net margin13.1%12.4%
Return on equity7.1%9.0%
P/E ratio36.119.1
Dividend yield6.9%
Profitable years (of last 10)1010
Positive free cash flowYesYes

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Use the filing period and source shown by each tool before treating two figures as comparable.

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See the full BIIB vs PFE 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 PFE's full financials →

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Frequently asked questions

Which is bigger, BIIB or PFE?

Market capitalization data is not available for both companies.

Which grows faster, BIIB or PFE?

Over the last five fiscal years, Pfizer, Inc. grew revenue faster — 8.5%/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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