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A123, Constellation, First Solar: U.S. Equity Movers

Shares of the following companies had unusual moves in U.S. trading. Stock symbols are in parentheses, and prices are as of 4 p.m. in New York.

A123 Systems Inc. (AONE US) rallied 16 percent, the most since Jan 3, to 95 cents. Alliance Bernstein raised its stake in the battery maker to 10.1 percent from 6.4 percent, according to a regulatory filing.

A. Schulman Inc. (SHLM US) slumped 14 percent, the most since 1999, to $23.89. The Akron, Ohio-based plastic compounds supplier had second-quarter earnings excluding some items of 38 cents a share, missing the average analyst estimate by 6 cents, data compiled by Bloomberg show.

Allos Therapeutics Inc. (ALTH US) surged 27 percent, the most since October 2008, to $1.82. The developer of cancer treatments agreed to be bought by Spectrum Pharmaceuticals Inc. (SPPI US) for $1.82 a share plus rights worth 11 cents a share tied to European regulatory approval and sales of its Folotyn drug. Spectrum declined 9.8 percent to $11.02.

Bed Bath & Beyond Inc. (BBBY US) rose 8.5 percent to $71.85 for the biggest increase in the Standard & Poor’s 500 Index. The retail-chain operator posted a fourth-quarter profit of $1.48 a share, beating the average analyst estimate of $1.32.

Constellation Brands Inc. (STZ US) slumped the most in the S&P 500, falling 12 percent to $21.61. The world’s largest wine company forecast full-year profit below analysts’ estimates.

FelCor Lodging Trust Inc. (FCH US) rallied 19 percent, the most since March 2010 to $4.28. The real estate investment trust said it agreed to sell six non-strategic hotels for $103 million.

First Solar Inc. (FSLR US) fell 3.5 percent to $20.98, the lowest price since it went public in November 2006. The biggest maker of thin-film solar panels had its share-price estimate lowered to $20 from $35 by JPMorgan Chase & Co., which said the company’s profit margin will continue to decline.

Himax Technologies Inc. (HIMX US) surged 20 percent, the most since March 2009, to $2.31. The maker of liquid crystal displays said first-quarter sales and earnings were higher than it had previously forecast.

L&L Energy Inc. (LLEN US) climbed 4.8 percent to $2.64, the highest price since Feb. 13. The U.S.-based company operating coal businesses in China said it signed a pact to provide coal to Datang International Power Generation Co., adding $31 million in revenue.

Meru Networks Inc. (MERU US) fell 26 percent, the most since its initial public offering in March 2010, to $3.10. The maker of Wi-Fi networking equipment said first-quarter preliminary revenue would be no more than $19.5 million, compared with the $21.9 million average forecast of analysts surveyed by Bloomberg.

Parametric Technology Corp. (PMTC US) plunged 21 percent, the most since April 2000, to $21.46. The maker of industrial software said second-quarter adjusted earnings were 28 cents a share at most. The average analyst estimate is for 34 cents a share, data compiled by Bloomberg show.

Polycom Inc. (PLCM US) dropped 20 percent, the most since Oct. 20, to $14.56. The maker of videoconference systems forecast first-quarter earnings of 23 cents a share at most, missing the average analyst estimate of 30 cents a share.

PPG Industries Inc. (PPG US) rose 2.5 percent, the most since March 8, to $96.29. The world’s second-largest paint maker reported first-quarter profit that exceeded analysts’ estimates on increased demand from the aerospace and automotive markets.

Ruby Tuesday Inc. (RT US) sank 18 percent, the most since April 2011, to $7.27. The casual-dining chain forecast same store sales may fall 4.5 percent in 2012.

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