Avoid the stress of overpaying for a stock or missing an opportunity by using the right tools and insights to evaluate ACI Worldwide, Inc. before investing.

In this article, we go over a few key elements for understanding ACI Worldwide, Inc.’s stock price such as:

• ACI Worldwide, Inc.’s current stock price and volume
• Why ACI Worldwide, Inc.’s stock price changed recently
• Upgrades and downgrades for ACIW from analysts
• ACIW’s stock price momentum as measured by its relative strength

About ACI Worldwide, Inc. (ACIW)

Before we jump into ACI Worldwide, Inc.’s stock price, history, target price and what caused it to recently dip, let’s take a look at some background.

ACI Worldwide, Inc. develops, markets, installs, and supports software products and services for facilitating electronic payments in the United States and worldwide. It operates through Payment Software, and Billers segments. The company offers ACI Acquiring, a solution to process credit, debit, and prepaid card transactions, deliver digital innovation, fraud prevention, and reduce fees; ACI Issuing, a digital payment issuing solution; and ACI Connetic, a solution that offers payment services for processing, routing, and managing various payment types. It provides ACI real-time payments, a solution that provides connectivity to payment rails; ACI RTGS and cross-border, a payments engine that offers multi-currency, payment and STP processing, and back-office integration interfaces; and ACI digital central infrastructure, a solution that offers real-time payments service. Further, it offers ACI Payments Orchestration Platform, a payments platform that orchestrates and optimizes payments; ACI Fraud Management for merchants, billers, and financial institutions; ACI Fraud Scoring Services with artificial and human insights with data intelligence; and Speedpay, an integrated suite of digital billing, payment, disbursement, and communication services. Additionally, it offers electronic bill presentment and payment services to consumer finance, insurance, healthcare, higher education, utility, government, subscription provider, telecommunications, and mortgage sectors; product installations and configurations, and custom software modifications; and business and technical consultancy, on-site support, product education, and testing services, as well distributes software developed by third parties. It has strategic partnerships with dLocal. The company was formerly known as Transaction Systems Architects, Inc. and changed its name to ACI Worldwide, Inc. in July 2007. The company was founded in 1975 and is headquartered in Elkhorn, Nebraska.

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ACI Worldwide, Inc.’s Stock Price as of Market Close

As of July 31, 2026, 4:00 PM, CST, ACI Worldwide, Inc.’s stock price was $57.330.

ACI Worldwide, Inc. is down 0.62% from its previous closing price of $57.690.

During the last market session, ACI Worldwide, Inc.’s stock traded between $56.680 and $57.720. Currently, there are approximately 101.92 million shares outstanding for ACI Worldwide, Inc..

ACI Worldwide, Inc.’s price-earnings (P/E) ratio is currently at 28.9, which is low compared to the Software industry median of 34.8. The price-earnings ratio gauges market expectation of future performance by relating a stock’s current share price to its earnings per share.

ACI Worldwide, Inc. Stock Price History

ACI Worldwide, Inc.’s (ACIW) price is currently up 14% so far this month.

During the month of July, ACI Worldwide, Inc.’s stock price has reached a high of $61.080 and a low of $50.950.

Over the last year, ACI Worldwide, Inc. has hit prices as high as $61.080 and as low as $38.055. Year to date, ACI Worldwide, Inc.’s stock is up 19.91%.

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What Caused ACI Worldwide, Inc. Stock’s Price to Dip?

Stock prices are primarily based on seller supply and buyer demand. But have you ever wondered about what other factors affect a stock's price?

When an analyst changes their opinion of a stock by upgrading or downgrading their rating, it often leads to a sudden stock price adjustment. As of July 31, 2026, there were 0 analysts who downgraded ACI Worldwide, Inc.’s stock and 1 analyst who upgraded over the last month.

Additionally, you'll want to evaluate ACI Worldwide, Inc.’s financial health and valuation. Investors can use AAII's Value Grade, which combines six key valuation metrics like P/E and P/S ratios for a comprehensive analysis to conduct analysis on ACI Worldwide, Inc.’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

ACI Worldwide, Inc.’s current valuation based on AAII’s Value Grade is a D, which means it is considered to be Expensive.

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Lastly, news and media coverage as well as recent press reports about the company or its industry may cause stock prices to fluctuate. You can check out the most recent news articles about ACI Worldwide, Inc. (ACIW) by visiting AAII Stock Evaluator.

Relative Price Strength of ACI Worldwide, Inc.

Relative price strength measures a stock's performance against the market, helping investors identify stocks that are outperforming benchmarks.

For AAII’s Momentum Grade, a weighted relative price strength is calculated. Follow this link to learn more about the Momentum Grade.

As of July 31, 2026, ACI Worldwide, Inc. has a weighted four-quarter relative price strength of 8.53%, which translates to a Momentum Score of 79 and is considered to be Strong.

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ACI Worldwide, Inc. Stock Price: Bottom Line

As of July 31, 2026, ACI Worldwide, Inc.’s stock price is $57.330, which is down 0.62% from its previous closing price.

AAII advises against making stock decisions based solely on price or past returns. Instead, consider a variety of metrics, fundamentals, and analytics to evaluate a stock like ACI Worldwide, Inc. stock prices are influenced by market supply and demand and offer just a snapshot of a company's overall health.

Subscribing to AAII's A+ Investor provides access to comprehensive analytics and insights for confident investing.