NASDAQ:ARQQ Arqit Quantum (ARQQ) Stock Price, News & Analysis $20.13 +0.61 (+3.13%) Closing price 09/18/2026 04:00 PM EasternExtended Trading$19.93 -0.20 (-0.99%) As of 09/18/2026 07:40 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more. Add Compare Share Share Stock Analysis Stock AnalysisAnalyst ForecastsChartCompetitorsFinancialsInsider TradesNews and TrendsOptions ChainOwnershipSEC FilingsShort Interest About Arqit Quantum Stock (NASDAQ:ARQQ) View Price History Chart DataSkip Price History Chart 1 Day 5 Days 30 Days 90 Days 1 Year Advanced 1 Day 1 Day 5 Days 30 Days 90 Days 1 Year Advanced Show volume Show extended hours Get Arqit Quantum alerts:Sign Up Key Stats Today's Range$18.41▼$20.4850-Day Range$15.49▼$24.3952-Week Range$11.52▼$62.00Volume655,262 shsAverage Volume345,062 shsMarket Capitalization$307.79 millionP/E RatioN/ADividend YieldN/APrice Target$60.00Consensus RatingHold Company Overview Arqit Quantum Inc. is a cybersecurity company that develops encryption technology designed to protect data and communications from current and future cyber threats, including attacks enabled by quantum computing. The company’s platform is intended to help organizations establish secure, cryptographic keys without relying on traditional public-key infrastructure. Arqit’s primary offering is its QuantumCloud service, a cloud-based platform that supports the creation and management of encryption keys for applications, devices, networks and other connected systems. Its technology is designed for use by enterprises, government organizations, telecommunications providers and other customers seeking quantum-resistant security for data in transit and at rest. The company was founded in 2017 by entrepreneur David Williams and is headquartered in London, United Kingdom. Arqit initially pursued a satellite-based approach to quantum-secure communications before shifting its focus toward software-based cybersecurity products. Its shares began trading on the Nasdaq following a business combination completed in 2021.AI Generated. May Contain Errors. Read More Arqit Quantum Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks29th Percentile Overall ScoreARQQ MarketRank™: Arqit Quantum scored higher than 29% of companies evaluated by MarketBeat, and ranked 444th out of 598 stocks in the technology sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.2 / 5Analyst RatingHold Consensus RatingArqit Quantum has received a consensus rating of Hold. The company's average rating score is 2.00, and is based on no strong buy ratings, 1 buy rating, no hold ratings, and 1 sell rating.Upside PotentialArqit Quantum has a consensus price target of $60.00, representing about 198.1% upside from its current price of $20.13.Amount of Analyst CoverageArqit Quantum has only been the subject of 1 research reports in the past 90 days.Read more about Arqit Quantum's stock forecast and price target. Earnings and Valuation0.0 / 5Proj. Earnings GrowthN/A Price to Book Value per Share RatioArqit Quantum has a P/B Ratio of 11.31. P/B Ratios above 3 indicate that a company could be overvalued with respect to its assets and liabilities. Short Interest1.0 / 5Short Interest LevelBearish Percentage of Shares Shorted37.47% of the float of Arqit Quantum has been sold short.Short Interest Ratio / Days to CoverArqit Quantum has a short interest ratio ("days to cover") of 10.01, which indicates bearish sentiment.Change versus previous monthShort interest in Arqit Quantum has recently decreased by 4.30%, indicating that investor sentiment is improving. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldArqit Quantum does not currently pay a dividend.Dividend GrowthArqit Quantum does not have a long track record of dividend growth. News and Social Media1.3 / 5News SentimentN/A Search Interest20 people have searched for ARQQ on MarketBeat in the last 30 days. This is an increase of 567% compared to the previous 30 days.MarketBeat Follows6 people have added Arqit Quantum to their MarketBeat watchlist in the last 30 days. This is an increase of 200% compared to the previous 30 days. Company Ownership1.6 / 5Insider TradingSelling Shares Insider Buying vs. Insider SellingIn the past three months, Arqit Quantum insiders have sold more of their company's stock than they have bought. Specifically, they have bought $0.00 in company stock and sold $2,249,085.00 in company stock.Percentage Held by Insiders54.60% of the stock of Arqit Quantum is held by insiders. A high percentage of insider ownership can be a sign of company health.Percentage Held by Institutions16.60% of the stock of Arqit Quantum is held by institutions.Read more about Arqit Quantum's insider trading history. Receive ARQQ Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Arqit Quantum and its competitors with MarketBeat's FREE daily newsletter. Submit View SMS TermsSMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. ARQQ Stock News HeadlinesThe Quantum Deadline Moved Up. Most Firms Cannot Find Their Own Keys.September 10, 2026 | theglobeandmail.comArqit, Es’hailSat and AIEE Demonstrate Quantum-Safe Security Across Live Satellite Communications InfrastructureSeptember 1, 2026 | quiverquant.comQYour $29.97 book is free todayWhy Some Traders Skip Stocks Entirely You don't need a big account to trade options. In fact, options can give you up to 12 times the leverage of stocks — with a fraction of the capital tied up. This free guide lays it all out in plain English — from A to Z, with step-by-step examples you can follow in your own account.September 19 at 1:00 AM | Profits Run (Ad)Arqit, Es'hailSat and AIEE Demonstrate Quantum-Safe Satellite SecuritySeptember 1, 2026 | globenewswire.comQuantum Computing Is Raising the Stakes for Cybersecurity: 5 Stocks to Watch (ARQQ)As quantum computing threatens current encryption, IBM, Cloudflare, Arqit, IonQ, Rigetti and D-Wave stand to benefit from mandated post-quantum cybersecurity spending through 2030.August 28, 2026 | marketbeat.comArqit Quantum: The Little Boat That Couldn'tAugust 25, 2026 | seekingalpha.comnLighten and Arqit prove you can use the public cloud without giving up sovereigntyJuly 14, 2026 | globenewswire.comArqit Quantum (ARQQ) Stock Looks Pricey After $7 Million Settlement Clears A Key OverhangJune 21, 2026 | finance.yahoo.comSee More Headlines ARQQ Stock Analysis - Frequently Asked Questions How have ARQQ shares performed this year? Arqit Quantum's stock was trading at $21.88 at the start of the year. Since then, ARQQ shares have decreased by 8.0% and is now trading at $20.13. How were Arqit Quantum's earnings last quarter? Arqit Quantum Inc. (NASDAQ:ARQQ) issued its earnings results on Thursday, May, 22nd. The company reported ($1.35) EPS for the quarter. Read the conference call transcript. When did Arqit Quantum's stock split? Shares of Arqit Quantum reverse split on the morning of Wednesday, September 25th 2024.The 1-25 reverse split was announced on Thursday, September 19th 2024. The number of shares owned by shareholders was adjusted after the closing bell on Tuesday, September 24th 2024. An investor that had 100 shares of stock prior to the reverse split would have 4 shares after the split. Who are Arqit Quantum's major shareholders? Top institutional shareholders of Arqit Quantum include Bank of New York Mellon Corp (0.65%) and Heck Capital Advisors LLC (0.05%). Insiders that own company stock include D'ovidio Manfredi Lefebvre, Garth Ritchie, Andrew Leaver, Paul Feenan, Nicholas Pointon, Patrick Willcocks, Jennifer Bers and Ben Simon Wilder. View institutional ownership trends. How do I buy shares of Arqit Quantum? Shares of ARQQ stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of Arqit Quantum own? Based on aggregate information from My MarketBeat watchlists, some other companies that Arqit Quantum investors own include Enovix (ENVX), Rambus (RMBS), Compass Pathways (CMPS), Saia (SAIA), Toast (TOST), Ginkgo Bioworks (DNA) and Luminar Technologies (LAZR). Company Calendar Last Earnings5/22/2025Today9/19/2026Fiscal Year End9/30/2026Get Stock Alerts Health Indicator TradeSmith's Health IndicatorA long-term volatility-based measure designed for securities held 12 months or longer.Green: Strong and healthy uptrend with normal pullbacks.Yellow: Significant pullback but still within expected volatility.Red: Dropped beyond expected volatility; considered unhealthy. Yellow Zone (2m+) 1-Year History Sep 25 Dec 25 Mar 26 Jun 26 Sep 26 ARQQ's financial health is in the Yellow zone, according to TradeSmith. ARQQ has been in this zone for over 2 months. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorTechnology Industry Software Sub-IndustrySystems Software Current SymbolNASDAQ:ARQQ CIK1859690 Webarqitgroup.com Phone44-20-3917-0155FaxN/AEmployees87Year Founded2017Price Target and Rating Average Price Target for Arqit Quantum$60.00 High Price Target$60.00 Low Price Target$60.00 Potential Upside/Downside+198.1%Consensus RatingHold Rating Score (0-4)2.00 Research Coverage2 Analysts Profitability EPS (Trailing Twelve Months)N/A Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet IncomeN/A Net MarginsN/A Pretax MarginN/A Return on EquityN/A Return on AssetsN/A Debt Debt-to-Equity RatioN/A Current Ratio4.88 Quick RatioN/A Sales & Book Value Annual Sales$530 thousand Price / Sales580.73 Cash FlowN/A Price / Cash FlowN/A Book Value$1.78 per share Price / Book11.31Miscellaneous Outstanding Shares15,290,000Free Float6,943,000Market Cap$307.79 million OptionableOptionable Beta2.30 Social Links 7 Stocks to Buy Before the Robotics RevolutionRobotics and automation are rapidly becoming essential infrastructure across healthcare, manufacturing, logistics, and many other industries. 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