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Arqit Quantum Inc. ARQQ

Technology · Software - Infrastructure

$16.66last close 2026-10-12 · market cap $289.84M · delayed data

Trailing returns

1M-16.93%
3M-12.71%
6M+32.92%
1Y-65.67%
5Y-95.44%

Basis: Adjusted daily closes.

What it does

Arqit Quantum Inc. provides cybersecurity services through satellite and terrestrial platforms in the United Kingdom. It offers QuantumCloud, a Platform as a Service that creates unbreakable software encryption keys. The company also provides maintenance and support, and professional services. Arqit Quantum Inc. is based in London, the United Kingdom.

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Valuation, cost of capital, SEC filings, ownership and more, with the source named on every figure.

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Where these figures come from

Delayed data. Not financial advice. Figures are read from the sources above at the dates shown; nothing here is a recommendation. Disclosures · All companies