Morgan Stanley ( MS) was upgraded at JMP Securities from underperform to market perform. Near-term policy risk has been lifted in the U.S. and Europe, JMP said.

Myriad Genetics ( MYGN) was downgraded at JP Morgan to underweight. Supreme Court ruling on ACLU case may hang over the stock, JP Morgan said.

Priceline.com ( PCLN) was upgraded at Bank of America/Merrill Lynch from neutral to buy. $770 price target. Company has better earnings upside potential than Expedia, BofA/Merrill said.

Ryland ( RYL) was downgraded at Topeka from buy to hold. Valuation call, based on a $65 price target, Topeka said.

Toll Brothers ( TOL) upgraded at Stifel Nicolaus to hold from sell. Company has lost its premium valuation, and the housing market should remain strong, Stifel Nicolaus said.

UnitedHealth ( UNH) was downgraded at Deutsche Bank from buy to hold. $61 price target. Price competition appears to be increasing, Deutsche said.

Waters ( WAT) was downgraded at Leerink Swann from outperform to market perform. Company may struggle to exceed consensus earnings expectations, Leerink Swann said.

Waters was downgraded at JP Morgan from overweight to neutral. Company is operating near peak margins and may face increased competition, JP Morgan said.

Wellpoint ( WLP) was downgraded at Deutsche Bank from buy to hold. $68 price target. Industry price increases are slowing, Deutsche Bank said.

Stock Comments / EPS Changes

Actuant Corporation ( ATU) numbers were lowered at UBS. Shares are now seen reaching $32. Estimates were also lowered on first-quarter miss. Buy rating.

Con-Way ( CNW) numbers were lowered at Citigroup. Shares are now seen reaching $30. Estimates were also lowered on sharp incremental margin discount, Citi said. Neutral rating.

3M ( MMM) numbers were raised at Jefferies. Shares are now seen reaching $110. Estimates were also raised on adjustment for Ceradyne, Jefferies said. Buy rating.

Norfolk Southern ( NSC) numbers lowered at Jefferies. Shares are now seen reaching $70. Estimates were also lowered on volatility, Jefferies said. Hold rating.

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