NEW YORK (TheStreet) -- CHANGE IN RATINGS

American Superconductor

(AMSC) - Get Report

upgraded at Deutsche from Hold to Buy. $38 price target. Company should offer bullish near-term guidance and help the stock reverse its recent underperformance.

Aruba Networks

(ARUN)

downgraded at BMO from Outperform to Market Perform. Stock is already up 30% year-to-date. $14 price target.

Cullen/Frost

(CFR) - Get Report

rated new Market Perform at FBR Capital Markets. $58 price target. Company is positioned well, but trades at a premium to its peers.

Check Point

(CHKP) - Get Report

rated new Equal-weight at Morgan Stanley. Company is a strong operator, but lacks significant catalysts until 2011.

Eaton Vance

(EV) - Get Report

downgraded at Wells Fargo to Market Perform. Valuation call, as the stock has outperformed its peers since October.

Global Payments

(GPN) - Get Report

upgraded at Wells Fargo to Outperform. Risk/reward is more attractive, following the recent sell-off.

J.B. Hunt Transport

(JBHT) - Get Report

numbers raised at Goldman through 2012. Company is seeing better pricing trends. Neutral rating and new $40 price target.

J.B. Hunt Transport

(JBHT) - Get Report

upgraded at FBR from Market Perform to Outperform. $43 price target. Intermodal pricing cycle is likely bottoming.

Omnicom

(OMC) - Get Report

upgraded at Deutsche from Hold to Buy. $46 price target. Stock is not yet pricing in the company's long-term stability and returns.

Pride International

( PDE) upgraded at Morgan Stanley to Equal-weight. $40 price target. Deepwater fundamentals could improve over the next 6 months.

Progressive

(PGR) - Get Report

upgraded at Credit Suisse to Neutral from Underperform. Positive on the fundamentals of the personal auto industry. Price target jumped to $22 from $18. 2010 and 2011 EPS estimates set at $1.45 and $1.55, respectively.

Sybase

( SY) downgraded at Jefferies from Buy to Hold. $47 price target. Company is facing a transition year.

Terex

(TEX) - Get Report

rated new Buy at Morgan Joseph. $32 price target. Sale of the mining business leaves a very profitable core operation.

>> Who Owns Terex?: Mohnish Pabrai

Tiffany

(TIF) - Get Report

rated new Buy at Deutsche Bank. $58 price target. Company can double its store base in the U.S., Europe and Asia.

United Parcel

(UPS) - Get Report

upgraded at Piper Jaffray. Rating raised to Overweight from Neutral. Price target raised to $79 from $64. 2010 EPS estimates raised to $3.15 from $2.79.

United Parcel

(UPS) - Get Report

estimates, target boosted at Goldman. UPS estimates were increased through 2012. Company is seeing operating leverage through higher volumes. Buy rating and new $82 price target.

>> Who Owns UPS?: Wallace Weitz

Zions Bancorp

(ZION) - Get Report

upgraded at Suntrust from Neutral to Buy. $36 price target. Capital raise will not be as dilutive at current levels, which boosts potential normalized earnings.

STOCK COMMENTS / EPS CHANGES

CSX

(CSX) - Get Report

estimates, target upped at Goldman. Shares of CSX now seen reaching $53. Company is realizing higher gross margins. Sell rating.

>> Who Owns CSX?: Bill and Melinda Gates

Gap

(GPS) - Get Report

estimates, target raised at FBR. Shares of GPS now seen reaching $32. Estimates also increased, because of international growth potential. Outperform rating.

WW Grainger

(GWW) - Get Report

target boosted at Oppenheimer to $130. Company raised guidance and the stock appears attractive, following a post-earnings sell-off. Outperform rating.

Juniper Networks

(JNPR) - Get Report

target, estimate higher at Barclays. JNPR price target increased to $37 from $33. Robust 1Q10 in both carrier and enterprises. 2010 EPS estimate raised to $1.34, 2011 held at $1.63. Overweight rating.

JPMorgan

(JPM) - Get Report

target, estimates boosted at Barclays. JPM price target raised to $60 from $55 after 1Q10 beat. 2010 and 2011 EPS estimates lifted to $3.25 and $5.10, respectively. Maintain Overweight rating.

JPMorgan

(JPM) - Get Report

estimates, target upped at UBS. Shares of JPM now seen reaching $50. Estimates also raised, because of a more favorable credit outlook. Neutral rating.

JPMorgan

(JPM) - Get Report

estimates increased at Goldman. JPM estimates were raised through 2011. Company is seeing better sales and credit trends. Buy rating and $54 price target.

>> Who Owns JPMorgan?: John Paulson

Linear Technology

(LLTC)

numbers upped at Goldman. Shares of LLTC now seen reaching $35. Estimates also boosted, to match the company's new sales guidance. Buy rating.

Marvell Technology

(MRVL) - Get Report

target upped at Morgan Stanley to $26. Market is not giving credit for the company's non-HDD growth opportunities. Overweight rating.

>> Who Owns Marvell?: Navellier & Associates

Websense

(WBSN)

target increased at Morgan Stanley to $30. Expanding product portfolio appears to be driving accelerated billings growth. Overweight rating.

Yum! Brands

(YUM) - Get Report

numbers boosted at Morgan Stanley. Shares of YUM now seen reaching $45. Estimates also increased, as the company is seeing higher comp sales. Overweight rating.

>> Who Owns Yum!?: Karen Finerman

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