As of December 2025 Illumina has a market cap of ยฃ14.87 Billion. This makes Illumina the world's 1125th 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 5th, 2025 the market cap of Illumina was reported to be: