TotalMarketCap

Market cap

$7.312 B

$44.00 +1.15%

Close of 7 Oct 2026

As of 7 Oct 2026, Ionis Pharmaceuticals (IONS) has a market capitalization of $7.31B. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

$943.7M

#1558 by revenue

Earnings

-$381.4M

Loss-making

Shares outstanding

166,184,322

Latest filing cover page

P/E ratio

—

Cap ÷ net income

Biotechnology: Pharmaceutical Preparations, ranked by market cap

All 499 →
  1. #39Praxis Precision MedicinesPRAX$7.82B
  2. #40AbivaxABVX$7.70B
  3. #41Ionis PharmaceuticalsIONS$7.31B
  4. #42Amneal PharmaceuticalsAMRX$7.07B
  5. #43Spyre TherapeuticsSYRE$7.06B

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Where these numbers come from

Share counts and financials for Ionis Pharmaceuticals 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 8 Oct 2026. Read the methodology.