NASDAQ
Ionis Pharmaceuticals, Inc. (IONS) has a market cap of $12.46B as of Friday, May 22, 2026. The IONS market cap is up 2.77% over the past 30 days and has grown 135.37% over the past year. Market capitalization represents the total market value of a company's outstanding shares, calculated by multiplying the stock price by the total number of shares outstanding.
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