CHANGE IN RATINGS

Chubb

(CB) - Get Report

upgraded at Bernstein from Underperform to Market Perform. $39 price target.

CME Group

(CME) - Get Report

upgraded at Goldman Sachs to Buy from Neutral based on improving trends in market structure arena. Note impending regulatory changes that could benefit CME more than peers. Price target raised to $330 from $215.

Freeport-McMoRan

(FCX) - Get Report

upgraded at J.P.Morgan to Overweight from Neutral. Price target raised to $58 from $36.50.

Juniper Networks

(JNPR) - Get Report

upgraded at Barclays from Equal-weight to Overweight. $29 price target. Sales visibility is improving, which should help boost earnings.

Kellogg

(K) - Get Report

rated new Outperform at RBC. Cites superior earnings quality, favorable category exposure and high brand strength. Sets $52 target.

Kroger

(KR) - Get Report

upgraded at Credit Suisse to Outperform from Neutral based on the assumption of stronger gross margins. They believe the concern over earnings risk associated with disinflation and weak consumer demand is over. Price target raised to $26 from $24.

Lincoln National

(LNC) - Get Report

upgraded at UBS from Neutral to Buy. Stock looks attractively priced, based on tangible book value.

Knight Capital

(NITE)

upgraded at Goldman Sachs to Buy from Neutral. Price target raised to $21 from $20.

Petsmart

(PTEM)

numbers raised at Barclays. Shares now seen reaching $20. Estimates also boosted, to reflect cost-cutting efforts. Equal-weight rating. Petsmart downgraded at Goldman Sachs to Neutral from Buy. Price target at $25.

Safeway

(SWY)

upgraded at Credit Suisse to Outperform from Neutral on an attractive risk/reward notion. Price target raised to $25 from $22.

Target

(TGT) - Get Report

upgraded at UBS from Neutral to Buy. $45 price target. Estimates also increased, as the company has low inventories and could see better back-to-school sales.

Tenet Healthcare

(THC) - Get Report

upgraded at Barclays from Equal-weight to Overweight. $4 price target. Company remains an attractive potential turnaround story.

Tellabs

(TLAB)

downgraded at Barclays from Overweight to Equal-weight. $6.50 price target.

STOCK COMMENTS / EPS CHANGES

Aflac

(AFL) - Get Report

estimates, target increased at Barclays. Estimates raised through 2010. Underweight rating and new $25 price target.

BJ'S Wholesale

(BJ) - Get Report

estimates raised at Morgan Stanley through 2012. Company is seeing higher grocery sales and continues to buy back stock. Equal-weight rating.

Deere

(DE) - Get Report

estimates, target lowered at Morgan Stanley. Shares now seen reaching $48. Estimates also cut, as sales are declining and pricing may soon follow. Equal-weight rating. Deere estimates cut, target raised at UBS. Company is seeing lower sales, but the target was raised to $45. Neutral rating. Deere target raised at Credit Suisse to $56 from $40. Maintained Outperform rating.

Quest Diagnostics

(DGX) - Get Report

estimates raised at Barclays through 2010. Company posted a lower actual share count in its recent 10-Q filing. Overweight rating and $59 price target.

Dreamworks

(DWA)

estimates, target raised at Jefferies. Shares now seen reaching $32. Estimates also raised, because of higher expected revenue on future films. Buy rating.

F5 Networks

(FFIV) - Get Report

numbers increased at Barclays through 2010. Demand appears to be stabilizing. Overweight rating and $35 price target.

Intuit

(INTU) - Get Report

target raised at Credit Suisse to $30 from $28 after reporting strong earnings and improving productivity. Maintained Outperform rating.

Lowe's

(LOW) - Get Report

estimates raised at Morgan Stanley through 2010. Company is realizing a higher gross margin. Equal-weight rating.

NetApp

(NTAP) - Get Report

estimates, target raised at Barclays. Shares now seen reaching $18. Estimates also increased, to reflect higher services revenue. Equal-weight rating.

Nvidia

(NVDA) - Get Report

added to Top Picks list at Citigroup. Company likely to keep gaining market share and see higher margins. Buy rating and $14.50 price target.

Polo Ralph Lauren

(RL) - Get Report

target raised at Barclays to $60 a share. European business has likely held up better than others, and the company should be able to achieve near-term earnings target. Equal-weight rating.

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