8-K

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 10, 2005

MarketAxess Holdings Inc.

(Exact name of registrant as specified in its charter)

Delaware	0-50670	52-2230784
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

140 Broadway, 42nd Floor New York, New York	10005
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code (212) 813-6000

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

TABLE OF CONTENTS

	Item 8.01 Other Events
	Item 9.01 Financial Statements and Exhibits
SIGNATURES
	EXHIBIT INDEX
EX-99.1: PRESS RELEASE

Item 8.01 Other Events

     On August 10, 2005, MarketAxess Holdings Inc. (the “Company”) issued a press release announcing the Company’s monthly volume statistics for July 2005. A copy of this press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits

     (c) Exhibits:

99.1 Press Release entitled “MarketAxess Announces Monthly Volume Statistics for July” issued by MarketAxess Holdings Inc. on August 10, 2005.

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SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	MARKETAXESS HOLDINGS INC.
Date: August 10, 2005	By:	/s/Richard M. McVey
		Name:	Richard M. McVey
		Title:	Chief Executive Officer

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EXHIBIT INDEX

Exhibit
99.1	Press Release entitled “MarketAxess Announces Monthly Volume Statistics for July” issued by MarketAxess Holdings Inc. on August 10, 2005.

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EX-99.1

MARKETAXESS ANNOUNCES MONTHLY VOLUME STATISTICS FOR JULY 2005

NEW YORK, August 10, 2005 — MarketAxess Holdings Inc. (Nasdaq: MKTX), the operator of a leading electronic trading platform for U.S. and European high-grade corporate and emerging markets bonds, today announced total monthly trading volume for July 2005 of $19.9 billion, consisting of $11.5 billion in U.S. high-grade volume, $5.2 billion in European high-grade volume, and $3.3 billion in other volume.

MarketAxess has also posted trading volume data for July on its website (www.marketaxess.com). Monthly volume updates are posted in the Investor Relations section of the website on or before the tenth business day of each month. The data provide current month and historical volume totals on a monthly, quarterly, and annual basis.

Cautionary Note Regarding Forward-Looking Statements

This press release may contain forward-looking statements, including statements about the outlook and prospects for Company and industry growth, as well as statements about the Company’s future financial and operating performance. These and other statements that relate to future results and events are based on MarketAxess’ current expectations. Actual results in future periods may differ materially from those currently expected or desired because of a number of risks and uncertainties, including: general economic and business conditions, the level of trading volume transacted on our platform, the absolute level and direction of interest rates and the corresponding volatility in the corporate fixed-income market, the level and intensity of competition in the electronic trading fixed-income industry and the pricing pressures that may result, MarketAxess’ ability to develop new products and offerings based on new or evolving technology and the market’s acceptance of those products, market psychology and the geopolitical environment. The Company’s actual results and financial condition may differ, perhaps materially, from the anticipated results and financial condition in any such forward-looking statements. The Company undertakes no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise. More information about these and other factors affecting MarketAxess’ business and prospects is contained in MarketAxess’ periodic filings with the Securities and Exchange Commission and can be accessed on www.marketaxess.com.

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 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, agencies 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, DZ Bank, FTN Financial, Goldman Sachs, HSBC, ING Financial Markets, JP Morgan, Jefferies & Company, Lehman Brothers, Merrill Lynch, Morgan Stanley, The Royal Bank of Scotland, Santander Investment Securities, SG Corporate & Investment Banking, UBS and Wachovia Securities.

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Contacts:

Media Relations

Andy Nybo	Melissa Kanter
MarketAxess Holdings Inc.	Edelman
(212) 813-6246	(212) 704-8261

Investor Relations

Stephen Davidson	Michele Loguidice
MarketAxess Holdings Inc.	Edelman
(212) 813-6021	(212) 704-8243