Calgon Carbon, Kit Digital, 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.

Education stocks fell after data from the U.S. Department of Education signaled that for-profit colleges’ aid may be imperiled because loan payback rates are insufficient. Barclays Plc cut ratings on Corinthian Colleges Inc. (COCO US) and ITT Educational Services Inc. (ESI US), saying “the overhang on the stocks is likely to persist longer than we had previously expected.”

Corinthian plunged 22 percent to $5.22. ITT lost 15 percent to $54.93. DeVry Inc. (DV US) slid 8.8 percent to $38.97. Strayer Education Inc. (STRA US) fell 18 percent to $163.26. Education Management Corp. (EDMC US) sank 20 percent to $9.71. Capella Education Co. (CPLA US) dropped 13 percent to $60.94.

Washington Post Co. (WPO US), which said a significant number of its Kaplan schools may be restricted or ineligible to get funding under a proposed government rule, fell the second most in the Standard & Poor’s 500 Index, losing 8.1 percent to $315.65.

Apollo Group Inc. (APOL US) rose the most in the S&P 500, adding 5.2 percent to $40.98. The biggest U.S. education company was touted as the industry’s top pick stock by Deutsche Bank AG, which said Apollo is already most of the issues through the orientation program and the majority of its bachelor’s programs will be able to grow.

3Par Inc. (PAR US) surged 87 percent to $18 for the biggest gain in Russell 2000 Index. Dell Inc. (DELL US) agreed to buy the provider of computing storage services for about $1.15 billion. Dell, the world’s third-largest personal-computer maker, is gaining equipment and software products to bolster its growing corporate data-center business.

Compellent Technologies Inc. (CML US), a storage area network producer, advanced 10 percent to $13.08.

Calgon Carbon Corp. (CCC US) rose 6.1 percent, the most since May 10, to $12.96. The Pittsburgh-based water-purification company was raised to “outperform” from “neutral” at Wedbush Securities Inc.

Houston American Energy Corp. (HUSA US) rallied 15 percent, the most since Feb. 16, to $10.20. The energy company posted second-quarter revenue of $7.63 million versus the $6.13 million average analyst estimate in a Bloomberg survey.

ICx Technologies Inc. (ICXT US) jumped 14 percent, the most since Dec. 30, to $7.71. The maker of advanced sensor technologies agreed to be bought by Flir Systems Inc. (FLIR US) for $7.55 a share in cash.

Kit Digital Inc. (KITD US) advanced 13 percent, the most since Oct. 6, to $9.08. The software company said its second-quarter revenue more than doubled to $23.1 million, beating all analyst estimates in a Bloomberg survey.

LyondellBasell Industries NV (LALLF US) jumped 3.8 percent to $18.70, the highest price since May 18. The chemical maker that emerged from bankruptcy in April said profit excluding some items more than doubled as lower raw-material costs widened margins in U.S. plastics.

Nelnet Inc. (NNI US) rose 5.8 percent, the most since July 22, to $20.10. The student loan provider was raised to “buy” from “hold” by Sandler O’Neill.

Prospect Medical Holdings Inc. (PZZ US) surged 40 percent to $8.54, the highest price since September 2004. The provider of medical services agreed to be acquired for $8.50 a share in cash by an entity sponsored by Leonard Green & Partners LP.

Res-Care Inc. (RSCR US) rallied 22 percent, the most since August 2003, to $12.37. The provider of residential and educational services for people with disabilities and special needs said Onex Corp. (OCX CN) offered to buy the company for $12.60 a share.

Synutra International Inc. (SYUT US) surged 16 percent, the most since June 10, to $14.25. China’s Health Ministry said an investigation showed no evidence that milk powder made by the maker of baby formula caused three infant girls to grow breasts, state-run Xinhua News Agency reported. Inc. (VITC US) sank 7.5 percent to $7.72, the lowest price since Nov. 23. The online seller of dietary supplements and personal care products posted a second-quarter loss of 5 cents a share excluding some items, missing the 7-cent profit analysts were expecting on average in a Bloomberg survey.

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