As of December 2025 Lumentum has a market cap of A$41.86 Billion. This makes Lumentum the world's 837th 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 23rd, 2025 the market cap of Lumentum was reported to be: