Stocks / BIIB vs CI

BIIB vs CI: Which Stock Is the Better Buy?

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

CI is the larger company ($73.7B vs $30.0B). On the fundamentals, CI grows revenue faster (11.4% vs -6.0%); BIIB earns a higher net margin (13.1% vs 2.2%); CI has the stronger return on equity (14.3% vs 7.1%). On the filings, CI carries fewer potential red flags (0 vs 1). Full numbers below — the stronger figure on each row is in green.

AI verdict — BIIB vs CI, 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)The Cigna Group (CI)
Market cap$30.0B$73.7B
Revenue (latest FY)$9.89B$274.90B
Net income (latest FY)$1.29B$5.96B
Revenue growth (5y CAGR)-6.0%11.4%
Net margin13.1%2.2%
Return on equity7.1%14.3%
P/E ratio36.111.5
Dividend yield2.2%
Profitable years (of last 10)1010
Positive free cash flowYes

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

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Frequently asked questions

Which is bigger, BIIB or CI?

The Cigna Group is larger by market capitalization — $73.7B versus $30.0B.

Which grows faster, BIIB or CI?

Over the last five fiscal years, The Cigna Group grew revenue faster — 11.4%/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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