shares of merck  co inc mrk inched 046 higher to 9920 friday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 136 to 377055 and the dow jones industrial average djia rising 126 to 3240322 the stocks rise snapped a threeday losing streak merck  co inc closed 230 short of its 52week high 10150 which the company reached on october 27th the stock demonstrated a mixed performance when compared to some of its competitors friday as johnson  johnson jnj rose 045 to 17148 roche holding ag part cert rhhvf fell 131 to 32401 and pfizer inc pfe rose 140 to 4722 trading volume 89 m eclipsed its 50day average volume of 89 m 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