NEW YORK (TheStreet) -- CHANGE IN RATINGS

Ameren

(AEE) - Get Report

rated new Market Perform at Wells. Stock looks reasonably valued ahead of two pending rate cases.

Clean Energy

(CLNE) - Get Report

downgraded at BofA/Merrill from Buy to Neutral. Valuation call, based on a $24 price target.

Cisco Systems

(CSCO) - Get Report

rated new Buy at Wunderlich Securities. $33 price target. New product lines in routing and switching should drive further growth.

Dupont

(DD) - Get Report

upgraded at BofA/Merrill to Neutral. $40 price target. Estimates also raised, as fundamentals are improving, despite the risk of a higher dollar and raw materials costs.

Dollar General

(DG) - Get Report

upgraded at Wells from Market Perform to Outperform. Company has several operating levers and government stimulus should boost disposable income for customers.

Dollar Tree

(DLTR) - Get Report

rated new Market Perform at Wells Fargo. Company has the best sales growth potential in the industry, but a fixed pricing structure could suffer in an inflationary environment.

Diamond Offshore

(DO) - Get Report

initiated at JP Morgan with an Underweight rating and $92 price target. Introduces 2010 EPS estimates of $8.44.

Ensco

(ESV)

initiated at JP Morgan. Initiated with a Buy rating and $57 price target. Introduces 2010 EPS estimates of $3.68.

Jack in the Box

(JACK) - Get Report

downgraded at Stifel from Buy to Hold. Valuation call, based on a $24 price target.

Noble Corporation

(NE) - Get Report

initiated at JP Morgan with a Neutral rating and $92 price target. Introduces 2010 EPS estimates of $5.39.

Pride International

initiated at JP Morgan with a Neutral rating and $49 price target. Introduces 2010 EPS estimates of $1.47.

Transocean

(RIG) - Get Report

initiated at JP Morgan with a Neutral rating and $95 price target. Introduces 2010 EPS estimates of $8.38.

Charles Schwab

(SCHW) - Get Report

rated new Buy at UBS. $24 price target. Company is the top asset gatherer in the industry and should benefit from rising interest rates.

Williams Cos.

(WMB) - Get Report

rated new Buy at Goldman. $28 price target. Earnings will likely come in ahead of consensus, as the company benefits from higher NGL prices.

STOCK COMMENTS / EPS CHANGES

Sotheby's

(BID) - Get Report

estimates, target boosted at JMP through 2011. Company is seeing improving auction rated, especially in London. Outperform rating and new $38 price target.

Bally Technologies

(BYI)

numbers cut at Goldman through 2012. Company lowered guidance because of Alabama and lower overall margins. Neutral rating and new $42 price target.

General Dynamics

(GD) - Get Report

numbers boosted at Oppenheimer. Shares of GD now seen reaching $88. Estimates also raised, as the lower interest expense will offset lower Combat results. Outperform rating.

Goodrich

( GR) estimates, target boosted at BofA/Merrill. Shares of GR now seen reaching $75. Estimates also increased, because of a stronger expected recovery in the OEM market. Neutral rating.

Precision Castparts

(PCP)

numbers raised at BofA/Merrill through 2014. Company should see higher commercial OEM rates. Buy rating and new $138 price target.

VMWare

(VMW) - Get Report

target raised at UBS to $62. Company should have a strong quarter, given positive channel checks. Buy rating.

Wilmington Trust

( WL) numbers upped at Morgan Stanley. Shares of WL now seen reaching $19. Estimates also raised, given higher expected fee-based income. Equal-weight rating.

Yum! Brands

(YUM) - Get Report

target boosted at Morgan Stanley. Shares of YUM now seen reaching $44. Stock is not factoring in the company's strong position in China. Overweight rating.

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