ARQQ
Arqit Quantum, Inc.
NASDAQ · Technology · Software - Infrastructure · GB
$13.87
−7.53%Price chart
Oct 6Oct 9Oct 14Oct 19Oct 22Oct 27Oct 30Nov 4
Key dataNov 4, 2026
Open$15.01
From 52W high−61.48%
Volume312120.00
Market cap$241.37M
P/E (TTM)—
P/S (TTM)222.3x
Div yield—
Key dataNov 4, 2026
Open
$15.01
From 52W high
−61.48%
Volume
312120.00
Market cap
$241.37M
ValuationView details →
P/E (Fwd)
—
EV/EBITDA
−4.3x
P/E (TTM)
—
RSI (14)
36.5
MomentumView details →
1D Return
−7.53%
YTD Return
−36.61%
SummaryUpdated Mar 1, 2026
Arqit Quantum Inc. (NASDAQ:ARQQ) is a London-based cybersecurity company that was founded to address the emerging threat of quantum computing to traditional encryption methods. The company went public in April 2021 through a SPAC merger and specializes in quantum-safe encryption technology. Originally conceived as a satellite-based quantum key distribution service, Arqit has since pivoted to focus exclusively on software-based quantum-safe encryption solutions delivered through cloud platforms and channel partnerships.
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Latest newsMore news →
Arqit Quantum Inc. announced a strategic investment in Sirius Computer, Inc. to accelerate the development and delivery of quantum-safe communications for defence, government and national security users.15d agoBabcock International Group and Arqit Quantum Inc demonstrated a secure communications network using Arqit's quantum-safe encryption technology to protect sensitive data from future quantum-enabled cyber threats.43d agoArqit Quantum Inc., Es'hailSat, and AIEE announced the successful demonstration of quantum-safe security across operational satellite communications infrastructure.64d ago