shares of merck  co inc mrk inched 036 higher to 10595 tuesday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 071 to 455498 and the dow jones industrial average djia rising 106 to 3495193 merck  co inc closed 1370 below its 52week high 11965 which the company achieved on may 3rd the stock demonstrated a mixed performance when compared to some of its competitors tuesday as johnson  johnson jnj fell 001 to 15906 and pfizer inc pfe rose 106 to 3624 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