shares of idexx laboratories inc idxx inched 039 higher to 67812 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 071 to 444808 and dow jones industrial average djia falling 079 to 3534328 this was the stocks second consecutive day of gains idexx laboratories inc closed 2883 below its 52week high 70695 which the company achieved on july 29th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as abbott laboratories abt rose 083 to 12569 thermo fisher scientific inc tmo rose 033 to 55631 and henry schein inc hsic rose 096 to 7746 trading volume 264831 remained 82305 below its 50day average volume of 347136 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