Cavium Inc. (CAVM) fell 3.4 percent to $29.52. The San Jose, California-based chipmaker forecast revenue in the first quarter will fall as much as 7 percent from the prior quarter.
CVR Energy Inc. (CVI) gained 7 percent to $29.10. Billionaire investor Carl Icahn extended to April 30 the deadline for his unsolicited offer for the producer of refined products and fertilizer, after 55 percent of shares were tendered under his $30-a-share bid for the company.
Guidewire Software Inc. (GWRE) (GWRE US) fell 5 percent to $28.50. The developer of software for the property and casualty insurance industry filed plans to offer 7.5 million shares.
Pep Boys — Manny, Moe & Jack (PBY US): The Philadelphia- based automotive retailer reported a fourth-quarter loss of 8 cents a share, compared with the average analyst estimate of a 13-cent profit.
Sigma-Aldrich Corp. (SIAL) : The maker of chemicals for research laboratories acquired biomedical supplier Research Organics Inc. Terms of the deal weren’t undisclosed. The St. Louis-based company said the deal will be “neutral” to earnings in 2012.
Solazyme Inc. (SZYM) (SZYM US) rose 6.8 percent to $15.28. The maker of oil products from genetically modified algae formed a joint venture with Bunge Ltd. (BG) for a commercial-scale renewable tailored oils production facility in Brazil.
Uranium Energy Corp. (UEC) fell 6.5 percent to $3.61. The developer of a mine in Texas said it plans to sell up to 5.6 million shares at $3.60 each.
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