Arqit Quantum (ARQQ) Stock Chart & Stock Price History $28.62 -0.71 (-2.42%) Closing price 04:00 PM EasternExtended Trading$28.33 -0.29 (-1.01%) As of 05:28 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 Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Arqit Quantum Stock Price Performance The Arqit Quantum (ARQQ) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 235.72%, with a year-to-date return of -26.31%. In the past month, the stock has decreased 30.87%, reflecting recent market activity. As of the latest close, Arqit Quantum traded at $29.33 with a market cap of $373.66 million and volume of 515,048 shares. 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Email Address 5 Day Performance-13.14%1 Month Performance-30.87%3 Month Performance+10.54%Year-To-Date Performance-26.31%1 Year Performance+235.72% ARQQ Stock Chart for Thursday, August, 21, 2025 ARQQ Chart by TradingView Arqit Quantum Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization08/20/2025$29.98$29.33-2.17%$29.91$27.29515,048 shs$373.66 million08/19/2025$32.51$29.98-7.78%$32.50$29.79340,301 shs$381.95 million08/18/2025$32.95$32.51-1.34%$32.56$30.86254,902 shs$414.18 million08/15/2025$32.46$32.95+1.51%$32.96$30.80281,432 shs$419.78 million08/14/2025$34.58$32.46-6.13%$33.61$31.15537,864 shs$413.70 million08/13/2025$34.13$34.58+1.32%$35.50$33.81436,501 shs$440.55 million08/12/2025$32.89$34.13+3.77%$34.39$31.99397,731 shs$434.82 million08/11/2025$32.33$32.89+1.73%$34.36$31.51361,765 shs$419.18 million08/08/2025$32.34$32.33-0.03%$34.20$32.14315,789 shs$412.05 million08/07/2025$34.74$32.34-6.91%$35.08$31.88453,409 shs$412.01 million Get the Latest News and Ratings for ARQQ and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Arqit Quantum and its competitors with MarketBeat's FREE daily newsletter. 08/06/2025$37.38$34.74-7.06%$36.21$33.70451,314 shs$442.59 million08/05/2025$35.29$37.38+5.92%$37.82$35.15513,476 shs$476.41 million08/04/2025$32.35$35.29+9.09%$35.32$32.54371,903 shs$449.60 million08/01/2025$33.24$32.35-2.68%$33.13$30.89431,140 shs$412.14 million07/31/2025$33.35$33.24-0.33%$35.89$33.12523,572 shs$423.48 million07/30/2025$34.01$33.35-1.94%$35.50$32.77366,692 shs$425.05 million07/29/2025$36.74$34.01-7.43%$37.14$33.62632,353 shs$433.29 million07/28/2025$38.33$36.74-4.15%$38.84$35.27695,849 shs$468.07 million07/25/2025$39.29$38.33-2.44%$39.50$37.56415,589 shs$488.32 million07/24/2025$40.53$39.29-3.06%$41.50$39.08399,975 shs$500.56 million07/23/2025$39.36$40.53+2.97%$40.67$38.57490,739 shs$516.35 million07/22/2025$41.40$39.36-4.93%$42.30$37.201.19 million shs$501.45 million07/21/2025$42.36$41.40-2.27%$50.21$41.301.78 million shs$527.44 million Related Companies Lightspeed Commerce Stock Chart Nayax Stock Chart MeridianLink Stock Chart Integral Ad Science Stock Chart Karooooo Stock Chart Opera Stock Chart PagerDuty Stock Chart Yalla Group Stock Chart N-able Stock Chart Tuya Stock Chart Receive ARQQ Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Arqit Quantum and its competitors with MarketBeat's FREE daily newsletter. 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