NASDAQ
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DexCom, Inc. (DXCM) has a market cap of $27.77B as of Friday, May 22, 2026. The DXCM market cap is up 13.23% over the past 30 days and has declined 16.52% 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.