As of December 2025 Lumentum has a market cap of โน2.358 Trillion. This makes Lumentum the world's 885th 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 21st, 2025 the market cap of Lumentum was reported to be: