MarketAxess to Host Conference Call Announcing 2015 Third Quarter Results on Wednesday, October 21, 2015

MarketAxess Holdings Inc. (Nasdaq:MKTX), the operator of a leading electronic trading platform for fixed-income securities, and the provider of market data and post-trade services for the global fixed-income markets, will issue a press release announcing its 2015 third quarter results on Wednesday, October 21, 2015 before the financial markets open. Richard M. McVey, Chairman and Chief Executive Officer, and Antonio L. DeLise, Chief Financial Officer, will host a conference call to discuss the Company’s financial results and outlook on Wednesday, October 21, 2015, at 10:00 a.m. Eastern time.

To access the conference call, please dial 855-425-4206 (U.S.) or 484-756-4249 (international). The Company will also host a live audio Webcast of the conference call on the Investor Relations section of the Company's website at http://investor.marketaxess.com. A replay of the call will be made available by dialing 855-859-2056 (U.S.) or 404-537-3406 (international) for one week after the announcement. The Webcast will also be archived on http://investor.marketaxess.com for 90 days following the announcement.About MarketAxessMarketAxess operates a leading electronic trading platform that enables fixed-income market participants to efficiently trade corporate bonds and other types of fixed-income instruments using MarketAxess' patented trading technology. Over 1,000 institutional investor and broker-dealer firms are active users of the MarketAxess trading platform, accessing global liquidity in U.S. high-grade corporate bonds, emerging markets and high-yield bonds, European bonds, U.S. agency bonds, credit default swaps and other fixed-income securities. MarketAxess SEF Corporation has received temporary registration from the U.S. Commodity Futures Trading Commission to operate a swap execution facility. MarketAxess also offers a number of trading-related products and services, including: market data to assist clients with trading decisions; connectivity solutions that facilitate straight-through processing; technology services to optimize trading environments; and execution services for exchange-traded fund managers and other clients. Through its Trax® division, MarketAxess also offers a range of pre- and post-trade services, including trade matching, regulatory transaction reporting and market and reference data, across a range of fixed-income products. Trax is the trading name of Xtrakter Ltd., a MarketAxess group company.

MarketAxess maintains its headquarters in New York and has offices in London, Boston, Chicago, Los Angeles, Salt Lake City, São Paulo, Hong Kong and Singapore. For more information, please visit www.marketaxess.com.

Investor Relations Contact:
Tony DeLise
MarketAxess Holdings Inc.
[phone]

Media Relations Contacts:
Florencia Panizza
MarketAxess Holdings Inc.
[phone]