New York City, Standard & Poor's Ratings Services said it revised its viewpoint of supermarket chain Wild Oats Markets Inc. by upping its rating from negative to positive. "The outlook change reflects expectations that ratings could be revised in the next six months if the company's positive operating trends continue," Standard & Poor's credit analyst Stella Kapur said. The revision reflects the improved operating results and credit metrics. Standard & Poor also reportedly affirmed its 'CCC+' corporate credit and other ratings on the grocery chain. Wild Oats has currently accumulated $172 million in debt.