UPGRADES:
Jefferies & Co upgrades Energy XXI (NASDAQ: EXXI) from Underperform to Hold. Price target increased to $2 from $0.60

Morgan Stanley upgrades Iowa Telecommunications Services (NYSE: IWA) from Underweight to Equalweight.

Citigroup is upgrading Vistaprint (NASDAQ: VPRT) to a Buy from Hold with a $62 price target (prev. $55). Click Here for more color.

For daily real-time Upgrades go to http://www.streetinsider.com/Upgrades

DOWNGRADES:
Stephens downgrades Benihana (NASDAQ: BNHN) from Overweight to Equalweight.

UBS downgrades NRG Energy (NYSE: NRG) from Buy to Neutral. The firm also lowered its price target on the stock from $33 to $26.

Wunderlich Securities downgrades Gran Tierra