Daily Digest Stockinvestips

Upgrades for May 17 2011 Tuesday:

1) Aecom Tech ( NYSE: ACM) upgraded from hold to buy by Argus.

2) Forward Air ( NYSE:FWRD) upgraded from neutral to outperform by Robert W. Baird.

3) Piedmont Office Realty Trust ( NYSE:PDM) upgraded from sell to hold by Stifel Nicolaus.

4) Terreno Realty ( NYSE: TRNO ) upgraded from hold to buy by Stifel Nicolaus.

5) Washington REIT ( NYSE:WRE) upgraded from hold to buy by Stifel Nicolaus.

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Downgrades for May 17 2011 Tuesday:

1) ECA Marcellus Trust ( NYSE: ECT ) downgraded from outperform to perform Oppenheimer.

2) NYSE Euronext ( NYSE: NYX) downgraded from buy to hold by Argus.

3) Ralcorp Holdings ( NYSE: RAH ) downgraded from buy to hold by BB&T Capital Mkts.

4) Wonder Auto Tech ( NASDAQ: WATG ) downgraded from buy to hold by Maxim Group.

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Coverage Initiated for May 17 2011 Tuesday:

1) Celldex Therapeutics ( NASDAQ: CLDX) coverage initiated with outperform by Oppenheimer.

2) Cintas ( NASDAQ: CTAS) coverage initiated with hold by Stifel Nicolaus.

3) Digi International ( NASDAQ: DGII ) coverage initiated with Buy by Feltl & Co

4) Immunomedics ( NASDAQ: IMMU ) coverage initiated with outperform by Oppenheimer.

5) Iron Mountain ( NYSE: IRM) coverage initiated with Buy by Stifel Nicolaus.

6) Keryx Biopharma ( NASDAQ: KERX ) coverage initiated with outperform by Oppenheimer.

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