shares of amgen inc amgn slipped 242 to 22788 tuesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 064 to 410990 and dow jones industrial average djia falling 101 to 3301214 amgen inc closed 6879 below its 52week high 29667 which the company reached on november 8th the stock underperformed when compared to some of its competitors tuesday as johnson  johnson jnj fell 013 to 15934 and pfizer inc pfe fell 040 to 3701 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