Ubiquiti Networks ( UBNT) downgraded at Pacific Crest to Sector Perform, Pacific Crest said. Sales are declining.

Ubiquiti Networks downgraded at Deutsche from Buy to Hold, Deutsche Bank said. $12 price target. Company guided lower, because of counterfeiting issues.

Ubiquiti Networks downgraded at Wedbush. Shares of UBNT downgraded to Neutral from Outperform, Wedbush said. $8 price target. Counterfeiting issue to take longer to resolve.

Verisign ( VRSN) downgraded at Baird from Outperform to Neutral, Robert Baird said. Valuation call, based on a $47 price target.

STOCK COMMENTS / EPS CHANGES

Alliant Techsystems ( ATK) numbers boosted at Credit Suisse. Shares of ATK now seen reaching $56, according to Credit Suisse. Estimates also upped, as the company is realizing higher margins. Neutral rating.

Enersys ( ENS) numbers raised at Jefferies. Shares of ENS now seen reaching $43, Jefferies said. Estimates also raised on strong execution. Buy rating.

ExactTarget ( ET) estimates, target raised at Lazard. Shares of ET now seen reaching $32, according to Lazard. Estimates also increased, given the company's new guidance.

JPMorgan ( JPM) estimates cut at UBS through 2013, UBS said. Company has delayed its share buybacks. Buy rating and $46 price target.

Nordstrom ( JWN) estimates, target raised at Credit Suisse. Shares of JWN now seen reaching $56, according to Credit Suisse. Estimates also increased, as the company is taking market share. Neutral rating.

Kohl's ( KSS) numbers lowered at BMO Capital. Shares KSS now seen reaching $58, BMO Capital said. Estimates also lowered on gross margin threshold reset. Outperform rating.

Medivation ( MDVN) estimates, target cut at Credit Suisse. Shares of MDVN now seen reaching $120, according to Credit Suisse. Estimates also reduced, given rising operating costs. Outperform rating.

Noble Energy ( NBL) numbers increased at Guggenheim. NBL estimates were raised through 2013, Guggenheim said. New Falkland deal should add to earnings. Buy rating and new $120 price target.

NVIDIA ( NVDA) numbers raised at BMO Capital. Shares of NVDA now seen reaching $16, BMO Capital said. Estimates also raised on strong results and guide. Market Perform rating.

ViroPharma ( VPHM) numbers raised at Jefferies. Shares of VPHM now seen reaching $29, Jefferies said. Estimates also raised on solid 2Q12. Buy rating.

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