EXHIBIT 99.1 NEWS RELEASE C2009-5 - ------------------------------------ ------------------------------------------ DST Systems, Inc. Contact: 333 West 11th Street Thomas A. McDonnell (816) 435-8684 Kansas City, MO President and Chief Executive Officer 64105-1594 Kenneth V. Hager (816) 435-8603 Vice President and Chief Financial Officer NYSE Symbol: DST - ------------------------------------ ------------------------------------------ FOR IMMEDIATE RELEASE - March 31, 2009 Page 1 DST SYSTEMS, INC. COMPLETES ACQUISITION OF REMAINING 50% OF ARGUS HEALTH SYSTEMS, INC. KANSAS CITY, MO (March 31, 2009) - DST Systems, Inc. (NYSE: DST) has completed the acquisition of the remaining 50% of Argus Health Systems, Inc. ("Argus"). Argus is now a wholly-owned subsidiary of DST. * * * * * The information and comments in this press release may include forward-looking statements respecting DST and its businesses. Such information and comments are based on DST's views as of today, and actual actions or results could differ. There could be a number of factors, risks, uncertainties or contingencies that could affect future actions or results, including but not limited to those set forth in DST's periodic reports (Form 10-K or 10-Q) filed from time to time with the Securities and Exchange Commission. All such factors should be considered in evaluating any forward-looking statements. The Company will not update any forward-looking statements in this press release to reflect future events.