Murphy USA (MUSA) is one of the stocks most watched by Zacks.com visitors lately. So, it might be a good idea to review some of the factors that might affect the near-term performance of the stock.Shares of this gasoline station operator have returned +0.6% over the past month versus the Zacks S&P 500 composite's -3% change. The Zacks Oil and Gas - Refining and Marketing industry, to which Murphy USA belongs, has gained 1.6% over this period. Now the key question is: Where could the stock be headed in the n ...