The Quantum Deadline Moved Up. Most Firms Cannot Find Their Own Keys.
Globe Newswire (Thu, 10-Sep 10:28 AM ET)
Arqit Quantum Shareholders Approve All Proposals at 2026 AGM
TipRanks (Wed, 9-Sep 6:49 AM ET)
Arqit, Es'hailSat and AIEE Demonstrate Quantum-Safe Satellite Security
Globe Newswire (Tue, 1-Sep 9:17 AM ET)
Globe Newswire (Fri, 28-Aug 12:45 PM ET)
A $19 Billion Trust Layer Is Being Rebuilt for the Quantum Age. QSE Just Got a Seat at the Table
Globe Newswire (Tue, 4-Aug 9:00 AM ET)
nLighten and Arqit prove you can use the public cloud without giving up sovereignty
Globe Newswire (Tue, 14-Jul 9:00 AM ET)
PRNewswire (Thu, 9-Jul 9:54 AM ET)
PRNewswire (Mon, 6-Jul 8:45 AM ET)
ARQQ’s Quantum-Safe Encryption Expansion Highlights the Urgency for Post-Quantum Security Solutions
Market Chameleon (Wed, 17-Jun 6:36 AM ET)
The Quiet Race to Rewire the World's Encryption Before Quantum Computers Break It
PRNewswire (Wed, 17-Jun 8:45 AM ET)
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.
Arqit Quantum - trades on the NASDAQ stock market under the symbol ARQQ.
As of September 11, 2026, ARQQ stock price declined to $20.00 with 120,572 million shares trading.
ARQQ has a beta of 4.43, meaning it tends to be more sensitive to market movements. ARQQ has a correlation of 0.22 to the broad based SPY ETF.
ARQQ has a market cap of $348.05 million. This is considered a Small Cap stock.
In the last 3 years, ARQQ traded as high as $62.00 and as low as $3.72.
The top ETF exchange traded funds that ARQQ belongs to (by Net Assets): QTUM, BUG, QTUP, CQTM, QQQS.
ARQQ has underperformed the market in the last year with a price return of -28.1% while the SPY ETF gained +18.3%. However, in the short term, ARQQ had mixed performance relative to the market. It has outperformed in the last 3 months, returning +52.8% vs +5.6% return in SPY. But in the last 2 weeks, ARQQ shares have been beat by the market, returning -6.8% compared to an SPY return of -0.9%.
ARQQ support price is $19.54 and resistance is $21.62 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that ARQQ shares will trade within this expected range on the day.