Amgen (AMGN) closed at $335.61 in the latest trading session, marking a -0.52% move from the prior day. This change lagged the S&P 500's daily gain of 0.28%. Elsewhere, the Dow gained 0.15%, while the tech-heavy Nasdaq added 0.15%.Shares of the world's largest biotech drugmaker witnessed a gain of 2.61% over the previous month, beating the performance of the Medical sector with its gain of 0.38% and the S&P 500's gain of 2%.Market participants will be closely following the financial results of Amgen in its ...