shares of amgen inc amgn shed 034 to 24578 thursday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 099 to 399895 and the dow jones industrial average djia rising 051 to 3203690 this was the stocks second consecutive day of losses amgen inc closed 1267 short of its 52week high 25845 which the company achieved on april 11th the stock demonstrated a mixed performance when compared to some of its competitors thursday as johnson  johnson jnj rose 035 to 17131 roche holding ag part cert rhhvf fell 184 to 33256 and pfizer inc pfe rose 059 to 5112 trading volume 20 m remained 13 million below its 50day average volume of 33 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