ACI Worldwide (ACIW) Stock Chart & Stock Price History $49.06 -0.53 (-1.07%) As of 12:52 PM Eastern This is a fair market value 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 increased 0.25%, with a year-to-date return of -5.49%. In the past month, the stock has increased 5.37%, reflecting recent market activity. As of the latest close, ACI Worldwide traded at $49.59 with a market cap of $5.18 billion and volume of 677,157 shares. Five years ago, the stock traded at $26.54, representing a 84.85% increase over that period. At the time, it had a market cap of $3.09 billion and a volume of 941,579 shares. 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Read our full terms of service and privacy policy. 5 Day Performance-3.10%1 Month Performance+5.37%3 Month Performance+7.68%Year-To-Date Performance-5.49%1 Year Performance+0.25%5 Year Performance+84.85% ACIW Stock Chart for Tuesday, September, 16, 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 Capitalization09/15/2025$50.15$49.59-1.12%$50.54$49.57677,157 shs$5.18 billion09/12/2025$50.63$50.15-0.95%$50.94$50.12888,541 shs$5.22 billion09/11/2025$50.09$50.63+1.08%$50.91$49.43915,070 shs$5.22 billion09/10/2025$51.23$50.09-2.23%$51.64$49.881.06 million shs$5.17 billion09/09/2025$51.21$51.23+0.04%$51.35$50.27725,182 shs$5.29 billion09/08/2025$50.25$51.21+1.91%$51.30$49.481.43 million shs$5.28 billion09/05/2025$49.64$50.25+1.23%$51.00$49.87709,381 shs$5.19 billion09/04/2025$49.17$49.64+0.96%$49.67$48.41800,768 shs$5.12 billion09/03/2025$48.98$49.17+0.39%$49.22$48.571.14 million shs$5.07 billion09/02/2025$49.35$48.98-0.75%$49.21$48.45756,062 shs$5.05 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. 09/01/2025$49.35$49.35$49.42$48.88789,286 shs$5.09 billion08/29/2025$49.20$49.35+0.30%$49.42$48.88789,286 shs$5.09 billion08/28/2025$48.49$49.20+1.46%$49.22$48.18849,854 shs$5.08 billion08/27/2025$48.14$48.49+0.73%$48.50$47.81691,965 shs$5.00 billion08/26/2025$48.76$48.14-1.27%$48.90$48.131.61 million shs$4.97 billion08/25/2025$49.31$48.76-1.12%$49.51$48.72682,678 shs$5.03 billion08/22/2025$47.87$49.31+3.01%$49.83$48.13773,956 shs$5.09 billion08/21/2025$47.09$47.87+1.66%$47.91$46.621.05 million shs$4.94 billion08/20/2025$47.03$47.09+0.13%$47.25$46.78823,943 shs$4.86 billion08/19/2025$47.25$47.03-0.47%$47.77$46.97520,777 shs$4.85 billion08/18/2025$46.56$47.25+1.48%$47.36$46.23573,813 shs$4.88 billion08/15/2025$46.61$46.56-0.11%$46.83$45.94763,641 shs$4.80 billion Related Companies FactSet Research Systems Stock Chart Manhattan Associates Stock Chart Pegasystems Stock Chart Informatica Stock Chart Blackbaud Stock Chart Sapiens International Stock Chart ePlus Stock Chart NetScout Systems Stock Chart Verint Systems Stock Chart PROS 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. This page (NASDAQ:ACIW) was last updated on 9/16/2025 by MarketBeat.com Staff From Our PartnersNew Biotech Backed by Proven Incubator Now Open to PublicA successful biotech incubator just opened its next chapter - and you're invited to their raise. 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