As of December 2025 Lumentum has a market cap of A$33.78 Billion. 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: