National Oilwell Varco (NOV) was upgraded today by analysts at Stanford Research and the stock is now at $51.60, up $0.01 (0.02%) on volume of 6,425,006 shares traded. The broker upgraded NOV to "Buy" from "Hold," and has a $70 price target on the stock. Over the last 52 weeks the stock has ranged from a low of $46.21 to a high of $92.70. National Oilwell Varco stock has been showing s...(Click the story link or go to http://www.marketintelligencecenter.com for the full story)