Arqit Quantum closed at $13.87 on Nov 4, down 7.53%, 65.9% below its 52-week closing high. Volume of 314.5K shares was 1.05× its 20-day average (close to normal).
Split-adjusted performance: -40.8% over one month, -11.5% over six months, -65.9% over one year.
Short interest was 2.3M shares at the Oct 15 settlement (31.1% of float, 7.2 days to cover).
Arqit Quantum Inc is a cybersecurity company that has pioneered a symmetric key agreement technology that makes the communications links of any networked device or data at rest secure against current and future forms of cyber attack - even an attack from a quantum computer. The company delivers its symmetric key agreement technology via its product SKA-Platform.
What is ARQQ's market cap?
$241.37M, based on the Nov 4 close of $13.87.
Does Arqit Quantum pay a dividend?
No regular cash dividend has been paid in the last year.
How much of ARQQ is sold short?
2.3M shares, 31.1% of float, as of Oct 15, 2026.
About Arqit Quantum
Arqit Quantum Inc is a cybersecurity company that has pioneered a symmetric key agreement technology that makes the communications links of any networked device or data at rest secure against current and future forms of cyber attack - even an attack from a quantum computer. The company delivers its symmetric key agreement technology via its product SKA-Platform. The firm operates in one segment, that is, the provision of cybersecurity services. The company operates and generates its revenue from UK.
Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology
