shares of perkinelmer inc pki slid 172 to 18288 friday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 015 to 445548 and the dow jones industrial average djia rising 010 to 3479800 the stocks fall snapped a threeday winning streak perkinelmer inc closed 912 below its 52week high 19200 which the company reached on september 23rd the stock underperformed when compared to some of its competitors friday as thermo fisher scientific inc tmo rose 025 to 60978 becton dickinson  co bdx fell 025 to 25318 and illumina inc ilmn fell 009 to 43282 trading volume 528752 remained 225396 below its 50day average volume of 754148 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