As of December 2025 Arqit Quantum has a market cap of โน36.00 Billion. This makes Arqit Quantum the world's 7540th 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 Arqit Quantum was reported to be: