July 29 (Bloomberg) -- 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.
Amerigroup Corp. (AGP US) slumped 18 percent, the most since September 2005, to $55. The manager of health-care benefits provided by government programs reported second-quarter profit that missed analyst estimates on a Georgia Medicaid miscount and higher costs.
Other managed-care companies also declined. Coventry Health Care Inc. (CVH US) fell the most in the Standard & Poor’s 500 Index, sinking 7.7 percent to $32 after the company forecast full-year earnings that missed the average analyst estimate. WellCare Health Plans Inc. (WCG US) tumbled 8.4 percent to $43.85. Centene Corp. (CNC US) slid 6.7 percent to $32.81.
Cerner Corp. (CERN US) climbed 7.2 percent to $66.49, the highest price since its initial public offering in 1986. The developer of technology for organizing medical records reported second-quarter profit excluding some items of 44 cents a share, beating the average analyst estimate by 1.9 percent, Bloomberg data show.
Constant Contact Inc. (CTCT US) dropped 9.5 percent, the most since April 29, to $18.93. The provider of web-based e-mail marketing services said that, excluding some items, it expects to earn 23 cent a share at most in the third quarter. That trailed the average analyst estimate of 26 cents in a Bloomberg survey.
Digital River Inc. (DRIV US) slumped 16 percent, the most since October 2009, to $25.50. The company that builds and manages online businesses projected third-quarter earnings excluding some items of 24 cents a share, missing the average analyst estimate of 28 cents in a Bloomberg survey.
Expedia Inc. (EXPE US) climbed 9.3 percent to $31.69, the highest price since December 2007. The online travel site reported second-quarter earnings excluding some items of 55 cents a share, beating the average analyst estimate by 12 percent, Bloomberg data show.
Genworth Financial Inc. (GNW US) rose 6.4 percent to $8.32 for its biggest gain since July 22. The mortgage guarantor and life insurer reported second-quarter sales of $2.66 billion, beating the average analyst estimate of $2.63 billion in a Bloomberg survey.
Netgear Inc. (NTGR US) slid 10 percent, the most since Feb. 9, to $32.91. The maker of modems and routers forecast third- quarter sales of $300 million at most, missing the average analyst estimate of $304.5 million in a Bloomberg survey.
Newell Rubbermaid Inc. (NWL US) gained 8 percent, the most since April 2009, to $15.52. The maker of Sharpie pens and Rubbermaid containers reported second-quarter profit excluding some items of 46 cents a share, 9 percent higher than the average analyst estimate, Bloomberg data show.
RealD Inc. (RLD US) tumbled 16 percent, the most since its IPO in July 2010, to $15.48. The developer of projection systems for 3-D cinemas reported quarterly sales of $59.6 million, falling short of the $78.8 million predicted by 11 analysts on average.
Regal Entertainment Group (RGC US) rallied 13 percent, the most since November 2008, to $12.79. The movie theater operator reported second-quarter earnings were 24 cents a share excluding some items, topping the average analyst estimate of 19 cents.
Southwestern Energy Inc. (SWN US) lost 6.1 percent, the most since October 2009, to $44.56. Average initial production from wells that began flowing in the second quarter was 7 percent lower than in the same quarter of 2010, the natural-gas producer said.
Stec Inc. (STEC US) slumped 39 percent to $10.17 for the second-biggest retreat in the Russell 2000 Index. The maker of flash-memory drives forecast third profit excluding some items of no more than 10 cents a share, below the average analyst estimate in a Bloomberg survey.
TeleNav Inc. (TNAV US) sank 44 percent, the biggest drop in the Russell 2000, to $10.03. The navigation and search services provider for mobile devices forecast first-quarter adjusted earnings of no more than 19 cents a share, missing the 20-cent average estimate by analysts.
True Religion Apparel Inc. (TRLG US) climbed 13 percent to $33.69, the highest price since May 2003. The seller of jeans reported second-quarter net income of 38 cents a share, exceeding the average analyst estimate by 14 percent, Bloomberg data show.
VistaPrint NV (VPRT US) declined 37 percent, the most since its IPO in September 2005, to $26.70. The online provider of printing services forecast adjusted earnings in 2012 to be no more than $1.68 a share, below the average analyst estimate in a Bloomberg survey.
Zoll Medical Corp. (ZOLL US) rallied 26 percent to $69.66, the highest price since it went public in 1992. The maker of defibrillators for hospitals and ambulances boosted its full- year forecast, saying it expects per-share earnings to be in “mid $1.30s.” Analysts, on average, estimated $1.27, according to a Bloomberg survey.
--With assistance from Lu Wang, Rita Nazareth and Victoria Taylor in New York. Editors: Joanna Ossinger, Stephen Kleege
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