Walmart Stores (NYSE: WMT) closed yesterday at $54.50. So far the stock has hit a 52-week low of $42.50 and 52-week high of $63.85. The proprietary Key Risk Ranking for WMT has improved from a 3 KEY moderate relative risk to a 4 KEY Low Relative Risk. This Key Ranking is determined daily and is a measure of the relative risk for an optimal calendar spread trade on this underl...(Click the story link or go to http://www.marketintelligencecenter.com for the full story)