Autodesk ( ADSK) downgraded at Deutsche Bank. Rating lowered to Hold from Buy. Lowers price target to $24 from $25. Maintains fiscal 2010 EPS estimates of $0.54.

Boeing ( BA) downgraded at Barclays from Overweight to Equal-weight. $46 price target. High risk remains in timing of 787 deliveries.

BE Aerospace ( BEAV) upgraded at Friedman, Billings Ramsey from Market Perform to Outperform. $22 price target. Company should outperform its peers when the sector rebounds.

Cabot Oil & Gas ( COG) downgraded at Oppenheimer from Outperform to Perform. Valuation call, based on average historical multiples.

Complete Production Services ( CPX) downgraded at Credit Suisse to Neutral from Outperform. Valuation is the primary factor in the change of ratings as the co. has been one of the best performing stocks in its group and reached its price target. Maintained $8 price target.

Ensco ( ESV) upgraded at Friedman, Billings Ramsey to Outperform. Jackup tender activity is increasing, which could signal a market bottom.

Exelon ( EXC) downgraded at Keybanc from Buy to Hold. Valuation call, as the company trades at a 17% premium to its peers.

Exelon ( EXC) downgraded at Wells Fargo from Outperform to Market Perform. Valuation call, as the company trades at a 20% premium to its peers.

Global Payments ( GPN) downgraded at Wells Fargo to Market Perform. Valuation call, though the HSBC acquisition should be accretive to earnings.

Rowan ( RDC) upgraded at Friedman, Billings Ramsey to Market Perform. Expect utilization to stabilize toward the end of the year.

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