MarketAxess Holdings Inc., headquartered in New York City, operates electronic trading platforms used to trade bonds and other fixed income products. It has approximately 2,100 customers, all of which are either institutional investors or broker-dealers. The company's platforms allow prospective traders to buy or sell specific bonds and to execute trades using a request for quote system. The company's Open Trading platform allows institutional investors, asset managers, and dealers to all trade anonymously with one another, increasing market liquidity. It also allows for portfolio trading and rules-based, automated algorithmic trading. In 2025, 86.8% of the company's revenues were derived from commissions for transactions. In 2025, the company received an average commission of $4.28 per $1 million in government bonds traded and an average commission of $138.87 per $1 million of other bonds traded. The company has an estimated 17.0% market share for trading in U.S. corporate bonds, a 5.9% market share for trading in U.S. municipal bonds, and a 2.4% market share for trading in U.S. government bonds. The company's primary competitor is TradeWeb.