MarketAxess Holdings Inc., together with its subsidiaries, operates an electronic trading platform for institutional investor and broker-dealer firms in the United States, the United Kingdom, and internationally. The company offers trading technology to access liquidity on its platforms in U.S. high-grade bonds, U.S. high-yield bonds, emerging market debt, eurobonds, municipal bonds, U.S. government bonds, and other fixed-income securities; and executes bond trades between and among institutional investor and broker-dealer clients in an all-to-all anonymous trading environment for corporate bonds through its Open Trading protocols. It also provides automated and algorithmic trading solutions, such as X-Pro, a trading platform to combine trading protocols with its proprietary data and pre-t…