As of December 2025 Lumentum has a market cap of โน2.037 Trillion. This makes Lumentum the world's 1009th 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 15th, 2025 the market cap of Lumentum was reported to be: