Must Know Analyst Upgrades and Downgrades Friday

Wall St. Watchdog reveals information about companies for which stock analysts either upgraded or downgraded the shares on May 18th:

Upgrades

BHP Billiton (NYSE:BHP): RBC Capital Mkts upgraded its rating on this company from Sector Perform to Outperform.

Marten Transport (NASDAQ:MRTN): Stifel Nicolaus upgraded its rating on this company from Hold to Buy and changed its price target to $24.

Hub Group (NASDAQ:HUBG): Stifel Nicolaus upgraded its rating on this company from Hold to Buy and changed its price target to $41.

Prestige Brands (NYSE:PBH): Oppenheimer upgraded its rating on this company from Perform to Outperform and changed its price target to $17.

Downgrades

Sysco (NYSE:SYY): Barclays downgraded its rating on this company from Equal Weight to Underweight and changed its price target from $28 to $27.

Anglo American (AAUKY): RBC Capital Mkts downgraded its rating on this company from Outperform to Sector Perform.

Tupperware (NYSE:TUP): Argus downgraded its rating on this company from Buy to Hold.

Gamestop (NYSE:GME): Caris & Company downgraded its rating on this company from Buy to Average and changed its price target from $34 to $20.

SatCon Tech (NASDAQ:SATC): Cantor Fitzgerald downgraded its rating on this company from Buy to Hold and changed its price target from $3 to $0.5.

Power-One (NASDAQ:PWER): Cantor Fitzgerald downgraded its rating on this company from Buy to Hold and changed its price target from $7.5 to $5.

GT Advanced Tech. (NASDAQ:GTAT): Ardour Capital downgraded its rating on this company from Buy to Hold and changed its price target from $16 to $5.

Identive Group (NASDAQ:INVE): Imperial Capital downgraded its rating on this company from Outperform to In-line and changed its price target from $2.75 to $1.5.

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