(New York, N.Y. – June 3, 2009) – ACI Worldwide, Inc. (Nasdaq: ACIW), a leading international provider of electronic payments software and solutions, today announced that it will be presenting at the Stephens Inc. Spring Investment Conference at the New York Palace Hotel today at 8.30 am EDT. ACI Worldwide will also present at the UBS Global Technology & Services Conference on June 9, 2009 from 11.45 am-12.15 pm EDT at the New York Sheraton and Towers. Both presentations will be webcast via www.aciworldwide.com/investorrelations.

For more information contact:
Tamar Gerber
Vice President, Investor Relations
+1 646-348-6706
tamar.gerber@aciworldwide.com