As of December 2025 Microsoft has a market cap of A$5.401 Trillion. This makes Microsoft the world's 4th 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 Dec 4th, 2025 the market cap of Microsoft was reported to be: