ACI Worldwide (ACIW) Stock Chart & Stock Price History $48.75 +0.57 (+1.18%) Closing price 10/17/2025 04:00 PM EasternExtended Trading$49.29 +0.54 (+1.11%) As of 10/17/2025 06:38 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock ACI Worldwide Stock Price Performance The ACI Worldwide (ACIW) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 3.77%, with a year-to-date return of -6.09%. In the past month, the stock has decreased 4.21%, reflecting recent market activity. As of the latest close, ACI Worldwide traded at $48.75 with a market cap of $5.03 billion and volume of 800,781 shares. Five years ago, the stock traded at $31.50, representing a 54.76% increase over that period. At the time, it had a market cap of $3.67 billion and a volume of 1.90 million shares. Receive ACIW Stock News and Ratings via EmailSign-up to receive the latest news and ratings for ACI Worldwide and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsBy 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. 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Read our full terms of service and privacy policy. 5 Day Performance-5.30%1 Month Performance-4.21%3 Month Performance+7.52%Year-To-Date Performance-6.09%1 Year Performance-3.77%5 Year Performance+54.76% ACIW Stock Chart for Sunday, October, 19, 2025 ACIW Chart by TradingView ACI Worldwide 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 Capitalization10/17/2025$48.18$48.75+1.18%$48.88$47.55800,781 shs$5.03 billion10/16/2025$50.52$48.18-4.63%$51.20$48.05967,300 shs$4.97 billion10/15/2025$51.48$50.52-1.86%$52.08$50.28522,687 shs$5.21 billion10/14/2025$51.00$51.48+0.94%$51.82$50.21400,960 shs$5.31 billion10/13/2025$51.01$51.00-0.02%$51.55$50.56420,599 shs$5.26 billion10/10/2025$52.38$51.01-2.62%$52.64$50.63499,316 shs$5.26 billion10/09/2025$52.89$52.38-0.96%$52.89$51.64481,407 shs$5.41 billion10/08/2025$52.69$52.89+0.38%$53.33$52.23605,026 shs$5.46 billion10/07/2025$53.58$52.69-1.66%$53.64$52.66575,198 shs$5.44 billion10/06/2025$53.62$53.58-0.07%$54.25$53.10846,089 shs$5.53 billion Get the Latest News and Ratings for ACIW and Related StocksEnter your email address below to receive the latest news and analysts' ratings for ACI Worldwide and its competitors with MarketBeat's FREE daily newsletter. 10/03/2025$53.02$53.62+1.13%$54.28$53.02682,383 shs$5.53 billion10/02/2025$52.74$53.02+0.53%$53.17$52.51588,337 shs$5.47 billion10/01/2025$52.77$52.74-0.06%$52.91$52.13847,111 shs$5.44 billion09/30/2025$52.34$52.77+0.82%$52.82$51.41843,514 shs$5.45 billion09/29/2025$52.26$52.34+0.15%$52.61$52.00838,120 shs$5.40 billion09/26/2025$51.71$52.26+1.06%$52.45$51.30475,985 shs$5.39 billion09/25/2025$52.28$51.71-1.09%$52.02$51.11566,972 shs$5.34 billion09/24/2025$52.36$52.28-0.15%$52.99$52.20494,513 shs$5.39 billion09/23/2025$52.90$52.36-1.02%$53.45$52.19960,076 shs$5.40 billion09/22/2025$50.89$52.90+3.95%$53.02$50.161.51 million shs$5.46 billion09/19/2025$51.13$50.89-0.47%$51.47$50.162.92 million shs$5.25 billion09/18/2025$49.76$51.13+2.75%$51.25$49.89894,206 shs$5.28 billion Related Companies Tyler Technologies Stock Chart SS&C Technologies Stock Chart Guidewire Software Stock Chart Manhattan Associates Stock Chart FactSet Research Systems Stock Chart Pegasystems Stock Chart Informatica Stock Chart Blackbaud Stock Chart Sapiens International Stock Chart ePlus Stock Chart Receive ACIW Stock News and Ratings via EmailSign-up to receive the latest news and ratings for ACI Worldwide and its competitors with MarketBeat's FREE daily newsletter. 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