Sonoco Products ( DA) downgraded at DA Davidson to Neutral, DA Davidson said. $33 price target. Estimates also cut, given the company's new guidance.

Webster Financial ( WBS) downgraded at Deutsche from Buy to Hold, Deutsche Bank said. $24 price target. Company is leveraged to higher expected mortgage prepay rates.

Western Gas Partners ( WES) downgraded at UBS to Neutral from Buy, UBS said. $51 price target. Valuation call.

STOCK COMMENTS / EPS CHANGES

Allegiant Travel ( ALGT) estimates raised at UBS through 2013, UBS said. Solid guidance for Q3. Buy rating and $75 price target.

Cabela's ( CAB) estimates, target boosted at Credit Suisse. Shares of CAB now seen reaching $62, according to Credit Suisse. Estimates also upped, given higher expected comp sales. Outperform rating.

Community Health Systems ( CYH) target raised at Jefferies to $29, Jefferies said. Easy 2H12 comps and discounted valuation could ignite upward momentum. Hold rating.

Medtronic ( MDT) target raised at Oppenheimer to $48, Oppenheimer said. Recent peer-group multiple expansion. Outperform rating.

Northern Trust ( NTRS) numbers lowered at Jefferies. Shares of NTRS now seen reaching $48, Jefferies said. Estimates also lowered on efficiency initiatives. Hold rating.

Ocwen Financial ( OCN) numbers raised at KBW. Shares of OCN now seen reaching $40, according to Keefe, Bruyette & Woods said. Homeward acquisition should add to earnings. Outperform rating.

Onyx Pharmaceuticals ( ONXX) numbers increased at BofA/Merrill. ONXX estimates were raised through 2013, Bank of America/Merrill Lynch said. Expect higher Kyprolis sales. Buy rating and new $101 price target.

Constellation Brands ( STZ) numbers raised at UBS. Shares of STZ now seen reaching $42. Estimates also increased as strong depletion trends support positive outlook. Buy rating.

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