MarketAxess Announces the Addition of RBS Greenwich Capital, Santander Investment Securities Inc. and ING Financial Markets to Dealer Group.

MarketAxess Holdings Inc. , the operator of a leading electronic trading platform for U.S. and European high-grade corporate and emerging markets bonds, today announced the addition of RBS Greenwich Capital, a wholly-owned subsidiary of The Royal Bank of Scotland Group, as a dealer on its U.S. high-grade platform. The company also announced the addition of Santander Investment Securities Inc. and ING Financial Markets as new dealers on MarketAxess' emerging markets platform.

RBS Greenwich Capital becomes the 18th dealer on the MarketAxess U.S. high-grade platform. Current dealers on the U.S. high-grade platform include ABN AMRO, Banc of America Securities, Barclays PLC, Bear Stearns, BNP Paribas, Citigroup Global Markets, Credit Suisse First Boston, Deutsche Bank Securities, Goldman Sachs, HSBC, J.P. Morgan Chase, Lehman Brothers, Merrill Lynch, Morgan Stanley, Spear Leeds & Kellogg, UBS and Wachovia Securities.

With the addition of Santander Investment Securities Inc. and ING Financial Markets to its emerging markets platform, MarketAxess will provide institutional investor clients with a central pool of aggregated liquidity from 18 leading emerging markets dealers. Current dealers on the MarketAxess emerging markets platform include ABN AMRO, Banc of America Securities, Barclays PLC, Bear Stearns, BNP Paribas, Citigroup Global Markets, Credit Suisse First Boston, Deutsche Bank Securities, Goldman Sachs, HSBC, J.P. Morgan Chase, Lehman Brothers, Merrill Lynch, Morgan Stanley, UBS and Wachovia Securities.

"At MarketAxess, we are committed to providing market-leading technology solutions, and unmatched liquidity, for the institutional credit markets we serve," said Richard McVey, Chairman and CEO of MarketAxess. "The additions of RBS Greenwich Capital, Santander Investment Securities Inc. and ING Financial Markets represent another important step to broaden our product offering for institutional investors."

About MarketAxess

MarketAxess operates one of the leading platforms for the electronic trading of corporate bonds and certain other types of fixed-income securities, serving as an electronic platform through which our more than 500 active institutional investor clients can access the liquidity provided by our 19 broker-dealer clients. MarketAxess' multi-dealer trading platform allows our institutional investor clients to simultaneously request competitive, executable bids or offers from multiple broker-dealers, and to execute trades with the broker-dealer of their choice. MarketAxess offers our clients the ability to trade U.S. high-grade corporate bonds, European high-grade corporate bonds, U.S. Treasury, and emerging markets bonds. MarketAxess also provides data and analytical tools that help our clients make trading decisions and we facilitate the trading process by electronically communicating order information between trading counterparties. MarketAxess' current participating dealers are: ABN AMRO, Banc of America Securities, Barclays PLC, Bear Stearns, BNP Paribas, Citigroup Global Markets, Credit Suisse First Boston, Deutsche Bank Securities, Goldman Sachs, HSBC, J.P. Morgan Chase, Lehman Brothers, Merrill Lynch, Morgan Stanley, The Royal Bank of Scotland, SG Corporate & Investment Banking, Spear Leeds & Kellogg, UBS and Wachovia Securities.

CONTACT: Media Relations, Andy Nybo, MarketAxess Holdings Inc., [phone]; or Melissa Kanter, Edelman, [phone]; or Investor Relations, Eric Scro, MarketAxess Holdings Inc., [phone]; or Michele Loguidice, Edelman, [phone]

Web site: http://www.marketaxess.com/