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The Options Clearing Corporation Board of Directors Announces New Member

CHICAGO, March 30, 2006 - The Options Clearing Corporation (OCC) announced today the appointment of a new member to its Board of Directors. The newly appointed Director is Bryce B. Engel, Executive Vice President and Chief Brokerage Operations Officer of TD Ameritrade Holding Corporation.

Mr. Engel replaces John P. Davidson III, effective immediately. Mr. Davidson, Managing Director, Equity Infrastructure for Morgan Stanley, had been a member of the Board since 2001.

As Executive Vice President, Chief Brokerage Operations Office for TD Ameritrade Holding Corporation, Mr. Engel currently oversees TD Ameritrade's retail Client Service and Support, Institutional operations, Clearing operations as well as Capital Markets. Mr. Engel was previously Vice President and Managing Director of Clearing where he oversaw all clearing operations including order routing, processing and settlement. He has served in a variety of roles during his 10-year tenure at TD Ameritrade, including the leadership of call center operations and Ameritrade Clearing. Mr. Engel also played a lead role in the integrations of Datek Online Holdings Corporation and National Discount Brokers Corporation.

Mr. Engel graduated with a B.A. in Finance from the University of Nebraska-Lincoln.

"We are pleased that Bryce will be joining OCC's Board of Directors," said Wayne Luthringshausen, OCC Chairman and Chief Executive Officer. "Bryce's rich history and industry experience are a welcome addition to our Board."

About OCC

OCC, founded in 1973, is the largest clearing organization in the world for options and was the first clearing house to receive a 'AAA' credit rating from Standard & Poor's Corporation. Operating under the jurisdiction of the Securities and Exchange Commission and the Commodity Futures Trading Commission, OCC provides clearing and settlement services for the American Stock Exchange, the Boston Options Exchange, Chicago Board Options Exchange, CBOE Futures Exchange, International Securities Exchange, OneChicago, Pacific Exchange, Philadelphia Stock Exchange and Philadelphia Board of Trade. More information about OCC is available through its Web site at