Shares of PerkinElmer Inc. /zigman2/quotes/203769792/composite PKI -0.15% slumped 0.05% to $187.30 Thursday, on what proved to be an all-around mixed trading session for the stock market, with the S&P 500 Index /zigman2/quotes/210599714/realtime SPX -1.89% rising 0.34% to 4,704.54 and the Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA -1.30% falling 0.17% to 35,870.95. This was the stock's second consecutive day of losses. PerkinElmer Inc. closed $4.70 below its 52-week high ($192.00), which the company reached on September 23rd.
The stock demonstrated a mixed performance when compared to some of its competitors Thursday, as Thermo Fisher Scientific Inc. /zigman2/quotes/201150432/composite TMO -1.33% rose 0.05% to $637.63, Becton Dickinson & Co. /zigman2/quotes/205527610/composite BDX +0.25% fell 0.20% to $249.36, and Illumina Inc. /zigman2/quotes/203509482/composite ILMN -3.81% fell 0.45% to $375.92. Trading volume (485,736) remained 190,025 below its 50-day average volume of 675,761.