Securities Class Action Lawsuit Filed Against Penson Worldwide, Inc.

On August 23, 2011, a class action lawsuit was filed in the United States District Court for the Northern District of Texas against Penson Worldwide, Inc. PNSN. The complaint alleges violations of federal securities laws, Sections 10 and 20 of the Securities Exchange Act of 1934 and Rule 10b-5, including allegations of issuing a series of material misrepresentations to the market which had the effect of artificially inflating the market price. The class period is from February 10, 2011 through August 4, 2011.