Murphy USA (MUSA) , a leading independent retailer of motor fuel and convenience merchandise in the United States, continues its uptrend. The stock closed the session on Jul 19 at $511.11 after setting a new 52-week high of $512.38 earlier on that day. As shown in this chart, with the advance, MUSA shares are up more than 43% since the start of the year, handily outperforming the industry, sector and the S&P 500.YTD PerformanceImage Source: Zacks Investment ResearchGiven this impressive year-to-date perform ...