As of May 2025 GlaxoSmithKline has a market cap of โน6.588 Trillion. This makes GlaxoSmithKline the world's 251th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On May 10th, 2025 the market cap of GlaxoSmithKline was reported to be: