Penson Worldwide, Inc. : Fourth Quarter 2011 Conference Call on Tuesday, February 28, at 10 AM Eastern (9 AM Central)

Penson Worldwide, Inc. (NASDAQ: PNSN) will host a conference call on Tuesday, February 28, 2012 at 10:00 AM Eastern Time (9:00 AM Central Time) with Philip A. Pendergraft, Chief Executive Officer; Bryce B. Engel, President & Chief Operating Officer; and Kevin W. McAleer, Chief Financial Officer. The call will be held to discuss results for the fourth quarter ended December 31, 2011 that will be issued in a release after the market closes on Monday, February 27, 2012. The call will be accessible live via a webcast on the Investor Relations section of www.penson.com. A webcast replay will be available shortly thereafter. Access the webcast link in advance to download any necessary software.

About Penson Worldwide: www.penson.com

The Penson Worldwide group of companies provides execution, clearing, custody, settlement and technology infrastructure products and services to financial services firms and others servicing the global financial services industry. The Penson Worldwide group of companies includes Penson Financial Services, Inc., Penson Financial Services Canada Inc., Penson Financial Services Ltd., and Nexa Technologies, Inc., among other companies. Headquartered in Dallas, Texas, Penson has served the clearing needs of the global financial services industry since 1995. Penson Worldwide - Building the Best Clearing and Execution Services Firm in the World.

Penson Financial Services, Inc. is a member of FINRA, New York Stock Exchange, NYSE Arca Exchange, NYSE Amex Equities, NYSE Amex Options, BATS Exchange, Direct Edge Exchanges (EDGA and EDGX), Chicago Board Options Exchange (CBOE), Chicago Stock Exchange, International Securities Exchange (ISE), NASDAQ OMX BX, NASDAQ OMX PHLX, NASDAQ Stock Market, NASDAQ LIFFE, LLC, National Stock Exchange, Options Clearing Corp. (OCC), Fixed Income Clearing Corp. (FICC), MSRB, National Securities Clearing Corp. (NSCC), DTC, Euroclear, and SIPC. Penson Financial Services, Inc. is also a registered Futures Commission Merchant and clearing member at the Chicago Mercantile Exchange, Chicago Board of Trade, New York Mercantile Exchange, Comex, Kansas City Board of Trade, Minneapolis Grain Exchange, NYSE Liffe US, NYSE Euronext LIFFE, ONEChicago, ICE CLEAR Europe and ICE Futures USA.

Penson Financial Services Canada Inc. is a participating organization with the Toronto Stock Exchange, the Montreal Exchange, the CNSX Exchange and the TSX Venture Exchange, is regulated by the Investment Industry Regulatory Organization of Canada, is a member of the CIPF, CDCC and CDS and subscribes to various Canadian Alternative Trading Systems.

Penson Financial Services Ltd. is a member of the London Stock Exchange, Chi-X Europe, BATS Europe, NYSE Arca, NYSE Euronext, and SmartPool, and is authorized and regulated by the Financial Services Authority.

Forward-Looking Statements: Statements contained in this news release that are not based on current or historical fact are forward-looking in nature. Such forward-looking statements are based on current plans, estimates and expectations. Forward-looking statements are based on known and unknown risks, assumptions, uncertainties and other factors. Actual results, performance, or achievements may differ materially from any future results, performance, or achievements expressed or implied by such forward-looking statements. Penson undertakes no obligation to publicly update or revise any forward-looking statement.

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