Apollo Group, Fresh Del Monte, Sina: 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.

Amyris Inc. (AMRS US) dropped 11 percent to $5.73, the lowest level since its September 2010 initial public offering. The biotechnology company reported a bigger fourth-quarter loss than analysts estimated in a Bloomberg survey.

Alimera Sciences Inc. (ALIM US) surged 71 percent, the most in the Russell 2000 Index, to $3.94 while Psivida Corp. (PSDV US) climbed 13 percent to $2.42. The pharmaceutical companies said they got a “positive” outcome to the Decentralized Procedure for approval of Iluvien in Europe as a treatment for diabetic macular edema, a retinal disease that can lead to vision loss.

Apollo Group Inc. (APOL US) sank 16 percent, the most since October 2010, to $43.04. The for-profit educator cut its operating profit forecast for 2012 to no more than $725 million, below the previous estimate of as much as $750 million.

Other education shares declined. ITT Educational Services Inc. (ESI US) retreated 5.4 percent to $68.29. DeVry Inc. (DV US) fell 3.8 percent to $35.41. Career Education Corp. (CECO US) slipped 19 percent to $9.10. Bridgepoint Education Inc. (BPI US) dropped 7.8 percent to $24.54.

Cablevision Systems Corp. (CVC US) fell 9.7 percent, the most since Oct. 28, to $14.13. The fifth-largest U.S. cable provider by subscribers said free cash flow will be lower this year because of an increase in capital expenditures.

CoreLogic Inc. (CLGX US) rose 6.2 percent to $15, the highest price since Aug. 3. Highfields Capital Management LP, the $11 billion investment firm run by Jonathon S. Jacobson, said it was disappointed in CoreLogic’s decision to “continue business as usual” and called for a management change. CoreLogic said yesterday that its board voted to end a strategic review that it began in August to explore options including a sale or merger of the company, and divestiture of some of its businesses.

Domino’s Pizza Inc. (DPZ US) rose 16 percent to $38.82, the highest price since it went public in July 2004. The pizza-delivery chain announced a debt refinancing that may result in a special dividend.

EResearchTechnology Inc. (ERT US) gained 17 percent, the most since February 2009, to $6.49. The maker of gear to test heart abnormalities said profit in the fourth quarter was 14 cents a share, excluding some items, beating the average analyst estimate of 10 cents.

Fresh Del Monte Produce Inc. (FDP US) fell 8.1 percent, the most since April 2009, to $22.97. The fruit and vegetable supplier reported an unexpected loss in the fourth quarter as sales trailed analysts’ estimates.

Office Depot Inc. (ODP US) increased 19 percent, the most since May 2009, to $3.59. The second-largest U.S. office-supply chain posted earnings excluding some items of 3 cents a share in the fourth quarter. Analysts, on average, expected the company to break even, according to a Bloomberg survey.

Pacific Ethanol Inc. (PEIX US) retreated 24 percent, the most since March 2010, to $1.22, the most intraday since Sept.

19. The alternative fuel producer reported a fourth-quarter loss of 3 cents a share.

Priceline.com Inc. (PCLN US) rose 7 percent to $632.76, the highest price since July 1999. The biggest U.S. online travel agency by market value reported fourth-quarter profit and sales that exceeded analysts’ estimates after expanding into more countries and taking business from rivals.

Rowan Cos. (RDC US) fell 5.9 percent, the most since Nov. 1, to $36.24. The offshore-drilling contractor that shed $1.6 billion of its business units last year said it plans to move its legal headquarters to the United Kingdom.

Sina Corp. (SINA US) jumped 11 percent, the most since Jan. 27, to $70.04. The owner of the Twitter-like Weibo site in China expects meaningful revenue contribution from the microblogging service in the second half, Chief Executive Officer Charles Chao said. Spending on Weibo may increase to $160 million this year compared with about $110 million in 2011, he said. “More clarity on Weibo monetization is encouraging,” C. Ming Zhao, an analyst at Susquehanna International Group LLP, wrote in a note.

Summer Infant Inc. (SUMR US) surged 25 percent, the most since August 2009, to $6.02. The Woonsocket, Rhode Island-based infant health and safety products company reported fourth-quarter adjusted earnings of 8 cents a share, exceeding the 6-cent estimate of analysts surveyed by Bloomberg.

Sykes Enterprises Inc. (SYKE US) dropped 17 percent, the biggest loss since Aug. 9, to $14.28. The operator of call centers forecast full-year earnings of $1.20 a share at most, below the average analyst estimate of $1.46.

Thompson Creek Metals Co. (TC US) fell 15 percent, the most since November 2008, to $7.36. The miner of molybdenum reported fourth-quarter revenue was $116.7 million, falling short of the average analyst estimate of $118 million.

Zagg Inc. (ZAGG US) gained 9.5 percent to $11.02, the highest price since Dec. 9. The distributor of electronics accessories reported fourth-quarter earnings of 27 cents a share, excluding some items, beating the average analyst estimate of 25 cents.

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