Stocks / BIIB vs SEM

BIIB vs SEM: Which Stock Is the Better Buy?

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

BIIB is the larger company ($30.0B vs $2.1B). On the fundamentals, SEM grows revenue faster (-0.3% vs -6.0%); BIIB earns a higher net margin (13.1% vs 2.7%); SEM has the stronger return on equity (8.6% vs 7.1%). On the filings, SEM carries fewer potential red flags (0 vs 1). Full numbers below — the stronger figure on each row is in green.

AI verdict — BIIB vs SEM, 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)Select Medical Holdings Corporation (SEM)
Market cap$30.0B$2.1B
Revenue (latest FY)$9.89B$5.45B
Net income (latest FY)$1.29B$146.22M
Revenue growth (5y CAGR)-6.0%-0.3%
Net margin13.1%2.7%
Return on equity7.1%8.6%
P/E ratio36.115.5
Dividend yield1.5%
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 SEM 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 SEM's full financials →

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Frequently asked questions

Which is bigger, BIIB or SEM?

Biogen Inc. is larger by market capitalization — $30.0B versus $2.1B.

Which grows faster, BIIB or SEM?

Over the last five fiscal years, Select Medical Holdings Corporation grew revenue faster — -0.3%/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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