Citi upgraded Whiting Petroleum (NYSE: WLL) from Neutral to Buy.
Northland Capital Markets upgraded Maxwell Technologies (Nasdaq: MXWL) from Market Perform to Outperform with a price target of $7. Click Here for more color.
Jefferies upgraded Questar (NYSE: STR) from Hold to Buy with a price target of $25.00 on valuation. Click Here for more color.
Tigress Financial Partners upgraded NVIDIA (Nasdaq: NVDA) from Neutral to Buy. Click Here for more color.
For daily real-time Upgrades go to http://www.streetinsider.com/Upgrades
DOWNGRADES
Citi chops Enterprise GP Holdings L.P. (NYSE: EPE) from Neutral