Amgen (AMGN) has been one of the most searched-for stocks on Zacks.com lately. So, you might want to look at some of the facts that could shape the stock's performance in the near term.Over the past month, shares of this world's largest biotech drugmaker have returned -2.3%, compared to the Zacks S&P 500 composite's +3.5% change. During this period, the Zacks Medical - Biomedical and Genetics industry, which Amgen falls in, has gained 2.2%. The key question now is: What could be the stock's future direction ...