As of December 2025 Arqit Quantum has a market cap of C$0.64 Billion. This makes Arqit Quantum the world's 7291th 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 4th, 2025 the market cap of Arqit Quantum was reported to be: