Amgen rose by 3.03 to trade at $241.98 today on the NASDAQ exchange.The volume of Amgen shares has traded since the start of the session was $1.22 M.Amgen has trade in a range of $233.35 to $242.13 on the day.The stock has traded at $242.1300 at its highest and $228.1200 at its lowest during the past 7 days.