Amgen (AMGN) stock has risen 19.6% in the past six months compared with an increase of 12.4% for the industry. The stock has also outperformed the sector and the S&P 500 index, as seen in the chart below.AMGN Stock Outperforms Industry, Sector & S&P 500Image Source: Zacks Investment ResearchThe stock has also been consistently trading above its 50-day and 200-day moving averages since early August.One of the key reasons for the recent stock price outperformance has been its strong second-quarter results, as ...