As of December 2025 Lumentum has a market cap of โน2.082 Trillion. This makes Lumentum the world's 995th 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 13th, 2025 the market cap of Lumentum was reported to be: