shares of amgen inc amgn rallied 115 to 22966 thursday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 037 to 438189 and the dow jones industrial average djia falling 001 to 3394671 amgen inc closed 6701 below its 52week high 29667 which the company reached on november 8th the stock outperformed some of its competitors thursday as johnson  johnson jnj rose 106 to 16562 and pfizer inc pfe fell 044 to 3873 trading volume 15 m remained 815058 below its 50day average volume of 23 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