As of December 2025 Onto Innovation has a market cap of ยฃ6.34 Billion. This makes Onto Innovation the world's 2191th 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 9th, 2025 the market cap of Onto Innovation was reported to be: