• Stockholders’ $198.3 equity: million • EPSof$0.06(versus $0.06for FY2007) • Nodebt • Deferred asset-$37.2 tax million • Cash,cashequivalents andsecuritiesof$124.3 million • Pre-taxoperatingmarginof13.9% • Total revenues of$22.4million FINANCIAL HIGHLIGHTS Market Capitalization Diluted Shares Price/Book Book Value Per Share solutions 52-week Range technology and Closing Price (12/31/2007) compliance data, of Symbol provider a and COMMON STOCK HIGHLIGHTS platform trading credit electronic leading The MARKETAXESS QUARTERLY FACT SHEET-4Q07 2 1 • DealerAxess®: MarketAxess offers fully-electronic andfully-anonymous dealer-to-dealer tradingplatform for U.S. high-grade,emergingmarkets and • High-Yield: Price-based available listtradingfunctionality sinceSeptember 2005. • CreditDerivatives: MarketAxess InSeptember 2005, launched thefirstclienttomulti-dealerCreditDefault Swaps tradingplatform for U.S. and • EmergingMarkets: clientshave totradeemerging market theability bonds,includingsovereign andcorporatebondsissuedby Other Fixed IncomeSectors • 19 dealersprovidingtoinstitutional liquidity investor clients lineitemsofcommingledinventoryrepresenting$90billioninbidsandoffers• 9,000+ • Firstplatform inEuropetooffer for capability corporatebonds adisclosedmulti-dealerinquiry • Europeantradingvolume of$15.0 billion European High-Grade • 22leadingdealersprovidingtoinstitutional liquidity investor clients • 12,000+ lineitemsofcommingledinventory, representing>$50billioninindicative bidsandoffers • U.S. high-gradetradingvolume of$40.0billion U.S. High-Grade SELECT CURRENTMARKETS • Straightthroughprocessing(STP) andapplicationprogramminginterface (API)solutions • Ordersareautomaticallyroutedtosectortradespecialistsatdealers • System providestotradeup40bonds(and150 list ability CDSsingle-names)inasingle inquiry • Total tradingvolume of$75.9billion ROBUST AND SCALABLE TRADING PLATFORM Regulatory Authority (FINRA,formerly NASD)• EstimatedshareofFinancialIndustry high-grade TRACE is7.8% • Over 675active • 30leadingglobalbroker-dealer clients CLIENT FRANCHISE • Nicholas Themelis, ChiefInformation Officer • James N.B. Rucker, ChiefFinancialOfficer • T. Kelley Millet,President • Richard M.McVey, ChairmanandChiefExecutive Officer MANAGEMENT TEAM • Principal officesinNew York and London • 181 employees GlobalSelectMarket,andRussell Russell 3000 2000 • Memberofthefollowing indices:NASDAQ Composite, • Founded in2000 • NASDAQ: MKTX OVERVIEW Clientsthathave executed atradeinthetrailing 12 months All data forAll data 4Q07except wherenoted other fixed income securities,includingCDSindicesandsingle-names. 150 single-names. European CDSindices.InNovember MarketAxess of2006, launched listsofupto allowing CDSsingle-namelisttrading, clientstosubmitinquiry entities domiciledinemergingmarkets countries. Currently 18 dealersareprovidingontheemergingmarkets liquidity platform. 2 institutional investor firms $306.45 million $34.07 million 1.79x $5.79 -$19.87$9.00 $12.83 MKTX (NASDAQ) $10 $12 $14 $16 $18 $20 $6 $8 J F M 1 A M 2005 J MARKETAXESS STOCK HISTORY 1/05-12/07 J A S O N D J F M A M 2006 J J A S O N D J F M A M 2007 J J A S O N

2007 D

Services Crossover Swaps Markets Grade

Technology Solutions STP BondTicker Yield High Agencies Default Credit Emerging Eurobonds High U.S. ™ Information & data SERVICES Corporate BondTicker™ • MarketAxess Corporate BondTicker™ data service combines the Financial Industry Regulatory Authority (FINRA, formerly NASD) TRACE data with MarketAxess tools to provide professional market participants with the most robust corporate price information available today. Information allows for better quality execution, ability to discern the real levels of credit spreads and trends in spread movement and verify pricing and volatility of credit instruments. • Corporate BondTicker is the exclusive source of daily corporate bond trading information for . • CDS Analytics combines from cash bonds, credit default swaps and the equity market to allow robust proprietary analysis.

BondTicker™ Compliance Tools • Offers a comprehensive set of tools and reports designed to help compliance officers review and monitor credit trading activity and measure best execu- tion. Compliance Tools offers trade uploads through links to leading OMS vendors, integration data from trades both on and off the MarketAxess platform. Uploaded trades are included in the Compliance Tools reporting features. • Additional features of the system will include a compliance messaging model to manage messaging risk. This state-of-the-art message surveillance tool will offer keyword risk scoring of messages, randomized message review, and full archiving. An anti-money-laundering component is scheduled to be added, to provide full compliance with AML regulations.

Technology Services • MarketAxess offers its extensive technology tools and product experience to outside entities. Many of the components of the MarketAxess trading system are modular and scalable as solutions for custom trading systems, reporting systems, connectivity, order processing and bond analytics. We are currently partnering with several of our major clients on large-scale projects. In November 2007, MarketAxess Corporation signed a definitive agreement to acquire Trade West Systems, LLC (TWS), a financial software innovator focused on providing gateway adapters for connecting order management systems (OMS) and trading systems to fixed-income trading venues under the “ProOMS” product name.

4Q07 TRADING PLATFORM STATISTICS 4Q07 TRADING VOLUME STATISTICS

809 Investor Traders Logged-On Daily $68.4 B Total Trading Volume

487 Dealer Traders Logged-On Daily $40.9 B U.S. High-Grade Volume

$50 B Daily Commingled Inventory $10.5 B European High-Grade Volume

36,451 Avg. Inquiries Per Month $16.9 B Other Volume

24,041 Avg. Trades Per Month

70.3% High-Grade Hit Rate

8,690 Unique Bonds Traded

DEALER PARTNERS

CONTACT Media and Investor Inquiries: Contact Stephen Davidson at 212.813.6021 or by email at [email protected] (c) 2008 MarketAxess Holdings Inc. MarketAxess Europe Ltd. is regulated by FSA. MarketAxess and the MarketAxess logo are a registered trademark of MarketAxess Holdings Inc. MarketAxess Corporation, member SIPC.