Analysts' Actions: AMAT, AMZN, GRPN, JNPR

NEW YORK ( TheStreet) -- CHANGE IN RATINGS

Applied Materials ( AMAT) was downgraded at Needham from Buy to Hold. Estimates were also cut, given a more cautious industry outlook, Needham said.

Amazon.com ( AMZN) was upgraded at Credit Suisse from Neutral to Outperform. $270 price target. Estimates were also boosted, as recent investments should pay off, Credit Suisse said.

Infoblox ( BLOX) was initiated with an Equal-Weight rating at Morgan Stanley. Valuation call, Morgan Stanley said.

Cepheid ( CPHD) was upgraded at UBS to Buy from Neutral. $45 price target. Recent decline offers buying opportunity, UBS said.

Carter's ( CRI) was initiated with a Market Perform at FBR Capital Markets. Valuation call, based on a $54 price target, FBR said.

Dominion Resources ( D) was upgraded at Jefferies to Buy from Hold. $58 price target. Valuation is favorable, Dominion said.

Brinker International ( EAT) numbers were raised at UBS. Shares are now seen reaching $35. Estimates were also increased as sustainable sales warrant higher valuation, UBS said. Buy rating.

Flextronics ( FLEX) was upgraded at Bank of America/Merrill Lynch to Buy from Neutral. $8.50 price target. Structural mix shift favorable to margin profile, BofA/Merrill said.

Groupon ( GRPN) was upgraded at Sterne Agee from Neutral to Buy. $20 price target. Company is leveraging higher sales in North America, Sterne Agee said.

Groupon was upgraded at Citigroup from Neutral to Buy. $22 price target. Company is posting higher seasonal growth, Citi said.

Hartford Financial ( HIG) was upgraded at Stifel Nicolaus from Hold to Buy. Valuation call, based on a $24 price target, Stifel Nicolaus said.

Jabil Circuit ( JBL) was upgraded at Bank of America/Merrill Lynch to Buy from Neutral. $28 price target. History shows iPhone launches are a significant catalyst, BofA/Merrill said.

Juniper Networks ( JNPR) was upgraded at Bank of America/Merrill Lynch from Neutral to Buy. $25 price target. Valuation call, as the stock is down 55% over the past 12 months, BofA/Merrill said.

McDermott International ( MDR) was upgraded at DA Davidson to Buy from Neutral. $16 price target. Earnings stabilizing, growth prospects improve, DA Davidson said.

Maximus ( MMS) was initiated with a Buy rating at Bank of America/Merrill Lynch. $54 price target. Company has low exposure to Medicaid and can generate 10% organic growth, BofA/Merrill Lynch said.

Noble Corp. ( NE) was upgraded to Buy at TheStreet Ratings.

Perrigo ( PRGO) was initiated with a Buy rating at Stifel Nicolaus. $125 price target. Company is a market leader with good visibility, Stifel Nicolaus said.

Phillips 66 ( PSX) was initiated with a Buy rating at Citigroup. $40 price target. Diversified assets levered to U.S. hydrocarbon growth, Citi said.

Quality Systems ( QSII) was upgraded at Auriga USA from Hold to Buy. $37 price target. Stock is attractive, following a 25% decline, Auriga USA said.

Quality Systems was downgraded at Citigroup to Sell from Neutral. $26 price target. Negative preannouncement reflects longer-term causes for concern.

Retail Properties of America ( RPAI) was initiated with a Buy rating at Citigroup. $10 price target. Value name in the shopping center REIT space.

Sothebys ( BID) was downgraded to Hold at TheStreet Ratings.

Southern Company ( SO) was upgraded at Jefferies to Buy from Hold. $50.50 price target. Valuation is compelling, Jefferies said.

Statoil ( STO) was upgraded at UBS to Buy from Neutral. $28.98 price target. Improving operational and financial performance, UBS said.

Thermo Fisher ( TMO) was downgraded at Mizuho from Buy to Neutral. Company is leveraged to lower academic spending, Mizuho said. $55 price target.

Wisconsin Energy ( WEC) was downgraded at Wells Fargo to Market Perform from Outperform. $38 to $39 price target. Valuation call, Wells Fargo said.

Xcel Energy ( XEL) was downgraded at Jefferies to Hold from Buy. $29 price target. Valuation has become robust, Jefferies said.

STOCK COMMENTS / EPS CHANGES

Apple ( AAPL) estimates were increased at Sterne Agee through 2013. Supplier checks suggest better iPhone sales, Sterne Agee said. Buy rating and $780 price target.

Allstate ( ALL) estimates, price target were increased at Credit Suisse. Estimates were raised through 2014. Company has a lot of operating momentum, Credit Suisse said. Outperform rating and new $39 price target.

Danaher ( DHR) was added to the Top Picks Live! list at Citigroup. High-quality appeal in an increasingly risk-averse market, Citi said.

Morgan Stanley was cut from the Focus List at Credit Suisse. Valuation call, Credit Suisse said.

Union Pacific ( UNP) numbers were boosted at Sterne Agee. Shares are now seen reaching reaching $120. Estimates were also increased, given lower fuel prices, Sterne Agee said. Buy rating.

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This article was written by a staff member of TheStreet.