Daily Digest Stockinvetips

Upgrades for May 10 2011 Tuesday:

1) Calpine ( NYSE: CPN) upgraded from hold to buy by Dahlman Rose.

2) Columbia Banking ( NASDAQ:COLB) upgraded from hold to buy by McAdams Wright Ragen.

3) Mindray Medical ( NYSE:MR) upgraded from perform to outperform by Oppenheimer.

4) Quicksilver Resources ( NYSE: KWK) upgraded from neutral to buy by Global Hunter Securities.

5) Rosetta Resources ( NASDAQ:ROSE) upgraded from hold to buy by Wunderlich.

6) Viacom ( NYSE: VIA.B) upgraded from hold to buy by Argus.

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Downgrades for May 10 2011 Tuesday:

1) American Eagle ( NYSE: AEO) downgraded from buy to neutral by Janney Mntgmy Scott.

2) GenOn Energy ( NYSE: GEN) downgraded from buy to hold by Dahlman Rose

3) NN Inc ( NASDAQ: NNBR) downgraded from buy to hold by KeyBanc Capital Mkts.

4) Universal Display ( NASDAQ:PANL ) downgraded from buy to hold by Canaccord Genuity.

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Coverage Initiated for May 10 2011 Tuesday:

1) Bob Evans ( NASDAQ: BOBE) coverage initiated with Hold by Miller Tabak.

2) NRG Energy( NYSE: NRG) coverage initiated with buy by Dahlman Rose.

3) One Liberty Properties ( NYSE: OLP ) coverage initiated with buy by Compass Point.

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