IONIS PHARMACEUTICALS INC (IONS)
About IONIS PHARMACEUTICALS INC
Ionis Pharmaceuticals is the leading developer of antisense technology to discover and develop novel drugs. Its broad clinical and preclinical pipeline targets a wide variety of diseases, with an emphasis on cardiovascular, metabolic, neurological, and rare diseases. Ionis and Biogen brought Spinraza to market in 2016 as a treatment for spinal muscular atrophy, and Biogen launched ALS drug Qalsody in 2023. Ionis brought two additional drugs to market via its cardiovascular-focused subsidiary Akcea, including ATTR amyloidosis drug Tegsedi (2018) and cardiology drug Waylivra (Europe, 2019). Ionis and AstraZeneca launched polyneuropathy drug Wainua in 2024. Ionis marked its first two independent launches in 2025 for Tryngolza (for FCS) and Dawnzera (for HAE).
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Financial summary
- Revenue FY2025
- $943.7M
- Net income
- -$381.4M
- Total assets
- $3.5B
- Market cap
- $9.3B
Source: SEC EDGAR · updated Jun 7, 2026
15-minute delayed · data by Polygon.io
Past year · hover for prices
52-week range
- Market cap
- $9.3B
- Shares outstanding
- 215.2M
- Open
- —
- Day range
- –
- Prev close
- —
- Volume
- —
- IPO date
- May 17, 1991
Ionis Pharmaceuticals Inc (IONS) Stock Price
- Reported a net loss of $381.4M in FY2025.
- Trading 50% below its 52-week high.
Automatically generated from public filings and market data. Informational only — not investment advice or a recommendation to buy or sell any security.
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Ionis Pharmaceuticals Inc: frequently asked questions
Is Ionis Pharmaceuticals Inc an American company?
Yes — Ionis Pharmaceuticals Inc is an American company headquartered in Carlsbad, California. Its American-origin credentials have been independently reviewed and verified by americancompanies.com.
Where is Ionis Pharmaceuticals Inc headquartered?
Ionis Pharmaceuticals Inc is headquartered in Carlsbad, California, United States.
Is Ionis Pharmaceuticals Inc publicly traded?
Yes — Ionis Pharmaceuticals Inc is a publicly traded company. Its stock trades under the ticker symbol IONS on the NASDAQ.
What does Ionis Pharmaceuticals Inc do?
Ionis Pharmaceuticals Inc is an American Pharmaceuticals company in the Health & Beauty sector.
