As of January 2026 GlaxoSmithKline has a market cap of HK$794.87 Billion. This makes GlaxoSmithKline the world's 212th 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 Jan 13th, 2026 the market cap of GlaxoSmithKline was reported to be: