As of December 2025 Lumentum has a market cap of ยฃ19.68 Billion. This makes Lumentum the world's 882th 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 20th, 2025 the market cap of Lumentum was reported to be: