shares of idexx laboratories inc idxx sank 009 to 55616 wednesday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 023 to 3552012 and the sp 500 index spx falling 002 to 456675 idexx laboratories inc closed 532 below its 52week high 56148 which the company reached on july 25th the stock underperformed when compared to some of its competitors wednesday as johnson  johnson jnj rose 019 to 17272 medtronic plc mdt rose 162 to 9040 and boston scientific corp bsx fell 002 to 5240 trading volume 335330 remained 126970 below its 50day average volume of 462300 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