Of these, perhaps no stock market trend is more popular than value investing, which is a strategy that has proven to be successful in all sorts of market environments. Value investors use fundamental analysis and traditional valuation metrics to find stocks that they believe are being undervalued by the market at large. These are just a handful of the figures considered in Sunoco's great Value grade. Still, they help show that the stock is likely being undervalued at the moment. Add this to the strength of ...