shares of marketaxess holdings inc mktx shed 301 to 23703 tuesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 042 to 449938 and dow jones industrial average djia falling 045 to 3531449 marketaxess holdings inc closed 16275 below its 52week high 39978 which the company reached on april 4th the stock underperformed when compared to some of its competitors tuesday as blackstone inc bx fell 015 to 10377 morgan stanley ms fell 068 to 8847 and charles schwab corp schw fell 068 to 6552 trading volume 367532 remained 30440 below its 50day average volume of 397972 editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use