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ACI Worldwide, Inc. to Release Fourth Quarter and Calendar Year 2010 Financial Results

Conference Call Scheduled for February 15, 2011 at 8.30 am EST

NEW YORK, Feb. 1, 2011 (GLOBE NEWSWIRE) -- ACI Worldwide, Inc. , a leading international provider of electronic payments software and solutions, announced today that it will hold a conference call on February 15, 2011 at 8:30 am EST to discuss the fourth quarter and calendar year 2010 financial results. Interested persons may access a real-time audio broadcast of the teleconference at http://www.aciworldwide.com/investorrelations or use the following numbers for dial in participation: US/Canada: (866) 914-7436, International/Local: +1 (817) 385-9117.  Please provide your name, the conference name ACI Worldwide, Inc. and conference code 41037084.

There will be a replay available for two weeks on (800) 642-1687 for US/Canada Dial-In and +1 (706) 645- 9291 for International/Local Dial-In participants.

About ACI Worldwide

ACI Worldwide powers electronic payments for more than 750 financial institutions, retailers and processors around the world. The company has a broad and integrated suite of electronic payment software in the market. More than 75 billion times each year, ACI's solutions process consumer payments. On an average day, ACI software manages more than US$12 trillion in wholesale payments. And for more than 150 organizations worldwide, ACI software helps to protect their customers from financial crime. To learn more about ACI and understand why we are trusted globally, please visit www.aciworldwide.com. You can also find us on www.paymentsinsights.com or on Twitter @ACI_Worldwide.

CONTACT: Tamar Gerber
         Vice President, Investor Relations & Financial Communications
         ACI Worldwide
         +1 646 348 6706