ARQQ
Arqit Quantum, Inc.
NASDAQ · Technology · Software - Infrastructure · GB
$20.13
+3.12%Price chart
Aug 19Aug 24Aug 27Sep 1Sep 4Sep 10Sep 15Sep 18
Key dataSep 18, 2026
Open$19.49
From 52W high−65.45%
Volume652318.00
Market cap$350.31M
P/E (TTM)—
P/S (TTM)322.6x
Div yield—
Key dataSep 18, 2026
Open
$19.49
From 52W high
−65.45%
Volume
652318.00
Market cap
$350.31M
ValuationView details →
P/E (Fwd)
—
EV/EBITDA
−6.4x
P/E (TTM)
—
RSI (14)
45.5
MomentumView details →
1D Return
+3.12%
YTD Return
−13.77%
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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