Must Know Analyst Upgrades and Downgrades Thursday

Wall St. Watchdog reveals information about companies for which stock analysts either upgraded or downgraded the shares on May 17th:

Upgrades

Canadian Pacific (NYSE:CP):  Barclays upgraded its rating on this company from Equal Weight to Overweight and changed its price target from $81 to $93.

Chesapeake Midstream Partners (NYSE:CHKM): Deutsche Bank upgraded its rating on this company from Hold to Buy and changed its price target to $30.

Cummins (NYSE:CMI): Standpoint Research upgraded its rating on this company from Hold to Buy.

AMAG Pharma (NASDAQ:AMAG): Ladenburg Thalmann upgraded its rating on this company from Neutral to Buy and changed its price target to $15.

G&K Svcs (NASDAQ:GKSR): KeyBanc Capital Mkts upgraded its rating on this company from Hold to Buy and changed its price target to $37.

Helmerich & Payne (NYSE:HP): Argus upgraded its rating on this company from Hold to Buy and changed its price target to $55.

Herbalife (NYSE:HLF): Caris & Company upgraded its rating on this company from Average to Buy and changed its price target from $39 to $86.

Downgrades

Cost Plus (NASDAQ:CPWM): KeyBanc Capital Mkts downgraded its rating on this company from Buy to Hold.

Cintas (NASDAQ:CTAS): KeyBanc Capital Mkts downgraded its rating on this company from Buy to Hold.

Riverbed Technology (NASDAQ:RVBD): MKM Partners downgraded its rating on this company from Buy to Neutral and changed its price target from $28 to $16.5.

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