As of September 2026 Arqit Quantum has a market cap of HK$2.59 Billion. This makes Arqit Quantum the world's 8332th 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 Sep 16th, 2026 the market cap of Arqit Quantum was reported to be: