As of October 2026 Quantum Corporation has a market cap of โน75.99 Billion. This makes Quantum Corporation the world's 6702th 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 Oct 27th, 2026 the market cap of Quantum Corporation was reported to be: