BIIBNasdaq United States
Market cap
$30.724 B
$207.94 +0.80%
Close of 7 Aug 2026
Revenue
$9.89B
#417 by revenue
Earnings
$1.29B
#321 by earnings
Shares outstanding
147,753,998
Latest filing cover page
P/E ratio
23.8
Cap ÷ net income
Where these numbers come from
Share counts and financials for Biogen are taken from its own SEC filings via EDGAR — public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 9 Aug 2026. Read the methodology.