shares of perkinelmer inc pki rose 110 to 12457 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 030 to 397015 and dow jones industrial average djia falling 071 to 3265670 the stocks rise snapped a threeday losing streak perkinelmer inc closed 6018 below its 52week high 18475 which the company achieved on march 22nd the stock outperformed some of its competitors tuesday as danaher corp dhr fell 017 to 24753 idexx laboratories