MarketAxess became a publicly traded company with its initial public offering of its common stock on November 5, 2004. With its continual growth, MarketAxess became a part of the S&P 500 Index on July 1, 2019.
MarketAxess-Holdings (MKTX) Stock Annual Returns since its IPO in 2004

MarketAxess Holdings (MKTX) Stock Monthly and Annual Returns since its IPO in 2004

MarketAxess Holdings (MKTX) Stock’s top 15 Highest Daily Returns

MarketAxess Holdings (MKTX) Stock’s top 15 Lowest Daily Returns