JERSEY CITY, N.J., Oct 10, 2003 /PRNewswire-FirstCall via COMTEX/ -- Knight Trading Group, Inc. (Nasdaq: NITE) today announced that Joseph C. Mazzella has joined the firm as a Managing Director, Listed Trading, and M. Patricia Regan has joined as a Vice President, Listed Trading, effective immediately.

Mr. Mazzella, 37, spent more than a decade at Merrill Lynch in listed equities trading. Previously, he worked for Lehman Brothers and Drexel Burnham Lambert Inc. Ms. Regan, 34, joined Knight from Thomas Weisel Partners where she was a Senior Listed Trader. She has also worked in listed trading for Volpe Brown Whelan & Co. and Charles Schwab. Mr. Mazzella and Ms. Regan report to Larry E. Rehmer, 38, Managing Director and Head of Listed Block Trading.

"While Knight's leadership in the Nasdaq market is clear, our market-making capabilities in NYSE and AMEX securities through the Nasdaq InterMarket are still gaining recognition," said Thomas M. Joyce, Chief Executive Officer and President of Knight Trading Group. "Knight is a top provider of liquidity throughout the whole of the marketplace -- listed equities included. The additions of Joe and Patti create opportunities for Knight to build stronger relationships with clients who seek listed trading expertise, and their experience and knowledge strengthen our listed block team."

Joseph C. Mazzella, 37, joined Knight after more than a decade in listed trading at Merrill Lynch. Most recently, Joe was a Managing Director for Listed Trading with responsibility across diverse sectors. He started at Merrill in 1993 as an Assistant in Listed Equities.

Joe came to Merrill from Lehman Brothers where, from 1990 to 1993, he managed small-to-mid-sized client accounts.

Joe began his career in 1985 at New York Stock Exchange specialist firm Carl H. Pforzheimer & Co., later Drexel Burnham Lambert Inc. He left for Lehman Brothers in 1990.

M. Patricia Regan, 34, joined Knight from Thomas Weisel Partners where she was a Senior Listed Trader across multiple sectors, including specialty retail, hotels and casinos, commercial services, autos and airlines, and homebuilders. Patti started at the San Francisco firm in 2000 as a Junior Listed Trader in the technology sector.

Patti also worked in San Francisco for Volpe Brown Whelan & Co. as a Listed Trader with responsibility for building the listed desk and client relationships, and at Charles Schwab, where she was a Senior Sales Trader.

Patti started her career at LaBranche & Co. as a Specialist Clerk on the New York Stock Exchange. She has B.A. in Psychology from Lynchburg College.

Knight is focused on meeting the needs of institutional and broker-dealer clients by providing comprehensive trade execution services in cash equities and options. A leading execution specialist, Knight offers capital commitment and access to a deep pool of liquidity across the depth and breadth of the market as it strives to provide superior client service. Knight also maintains a $1 billion asset management business for institutions and high net worth individuals. More information about Knight can be obtained at www.knighttradinggroup.com.

Certain statements contained herein constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on current expectations, estimates and projections about the Company's industry, management's beliefs and certain assumptions made by management. Readers are cautioned that any such forward-looking statements are not guarantees of future performance and are subject to certain risks, uncertainties and assumptions that are difficult to predict. Since such statements involve risks and uncertainties, the actual results and performance of the Company may turn out to be materially different from the results expressed or implied by such forward-looking statements. Given these uncertainties, readers are cautioned not to place undue reliance on such forward-looking statements. Unless otherwise required by law, the Company also disclaims any obligation to update its view of any such risks or uncertainties or to announce publicly the result of any revisions to the forward-looking statements made herein; however, readers should carefully review reports or documents the Company files from time to time with the Securities and Exchange Commission.

SOURCE Knight Trading Group, Inc.

Margaret Wyrwas, Senior Managing Director, Corporate Communications & Investor Relations, +1-201-557-6954, mwyrwas@knighttrading.com, or Kara Fitzsimmons Vice President, Corporate Communications, +1-201-356-1523, kfitzsimmons@knighttrading.com, or Judy Pirro, Vice President, Investor & Shareholder Relations, +1-201-356-1548, jpirro@knighttrading.com, or Catherine Smith, Assistant Vice President, Marketing Communications & Public Relations +1-201-557-6992, csmith@knighttrading.com, all of Knight Trading Group, Inc.

http://www.knighttradinggroup.com