shares of perkinelmer inc pki slid 237 to 13528 monday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 130 to 401777 and dow jones industrial average djia falling 077 to 3371709 perkinelmer inc closed 5528 short of its 52week high 19056 which the company achieved on february 9th the stock demonstrated a mixed performance when compared to some of its competitors monday as danaher corp dhr fell 121 to 26275 idexx laboratories inc idxx fell 083 to 48295 and agilent technologies inc a fell 254 to 15174 trading volume 485765 remained 290374 below its 50day average volume of 776139 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