NEW YORK ( TheStreet) -- CHANGE IN RATINGS

DiamondRock Hospitality ( DRH) upgraded at Citi to Buy from Hold on relative valuation and potential sentiment shift. $11.50 price target.

FirstEnergy ( FE - Get Report) downgraded at Citi to Hold from Buy as near term opportunity closed. Maintain $39 price target.

International Paper ( IP - Get Report) upgraded at BofA Merrill to Buy from Neutral. Price target raised to $32 from $30. 2010 EPS estimates raised to $1.90 from $1.75.

Kforce ( KFRC) upgraded at Credit Suisse to Outperform from Neutral and price target increased to $18 from $13. Temp staffing growth continuing rapid recovery.

Lazard ( LAZ - Get Report) downgraded at Goldman to Neutral from Buy on M&A headwinds, volatility, and sovereign uncertainty. Price target cut to $15 from $20.

Niska Gas Storage ( NKA) initiated at Credit Suisse with an Outperform rating and $21 price target. Pure-play natural gas storage MLP driven by increasing natural gas consumption.

OpenTable ( OPEN) downgraded at Citi to Hold from Buy. Pure valuation call. Maintain $45 price target.

Public Service Enterprise Group ( PEG) upgraded at Goldman to Conviction Buy List on strong EPS growth and improving cash flows. Price target set at $41.

Polycom ( PLCM) upgraded at BofA Merrill. Rating raised to Buy from Neutral. Price target raised to $38 from $35. 2010 EPS estimates raised to $1.38 from $1.23.

Robert Half ( RHI - Get Report) upgraded at Credit Suisse to Outperform from Neutral and price target raised to $31 from $30. Demand for temps still improving.

Rock Tenn ( RKT) downgraded at BofA Merrill. Rating lowered to Neutral from Buy. Price target raised to $60 from $55. 2010 EPS estimates raised to $4.15 from $4.10.

STOCK COMMENTS / EPS CHANGES

Discover Financial ( DFS - Get Report) estimate lower at Barclays. DFS 2010 EPS estimate cut to 40 cents as provisions should decline in 2010. Reiterate Overweight rating and $18 price target.

El Paso Pipeline Partners ( EPB) price target higher at Citi; raised to $31.50 as above trend growth continues. Maintain Buy rating.

ReneSola ( SOL - Get Report) estimates boosted at Barclays. SOL 2010 and 2011 EPS estimates jumped to $1.15 and $1.05, respectively. Potential to generate huge cash flows in 2010. Maintain Equal Weight rating and $9 price target.

WESCO International ( WCC) estimates trimmed at Barclays. WCC 2010 and 2011 EPS estimates lowered to $2.35 and $3.25, respectively. Barclays cited loss of joint venture income. Maintain Overweight rating and $50 price target.

This article was written by a staff member of TheStreet.com.