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.
Mortgage insurers gained after a report from U.S. Treasury Secretary Timothy F. Geithner called for limiting the role of government-backed competitors.
MGIC Investment Corp. (MTG US) jumped 9.6 percent to $10.05. Radian Group Inc. (RDN US) climbed 13 percent to $8.03. PMI Group Inc. (PMI US) added 2.8 percent to $3.34. Genworth Financial Inc. (GNW US), a mortgage guarantor and life insurer, advanced 4.4 percent to $13.59.
Blue Nile Inc. (NILE US) declined 12 percent, the most since December 2008, to $55.87. The online retailer of diamonds and fine jewelry reported fourth-quarter earnings of 41 cents a share, missing the average analyst estimate of 43 cents, Bloomberg data show.
Cambrex Corp. (CBM US) advanced 18 percent, the most since May 2009, to $5.95. The supplier of chemicals to pharmaceutical companies reported fourth-quarter profit of 18 cents a share, double the average analyst estimate, Bloomberg data showed.
Chipotle Mexican Grill Inc. (CMG US) rose 4.7 percent to a record $268.73. The Denver-based restaurant chain reported fourth-quarter earnings on an adjusted basis of $1.47, beating the average analyst estimate of $1.30, according to Bloomberg data.
DaVita Inc. (DVA US) gained 3.1 percent to $78.51, the highest price since it went public in 1995. The provider of dialysis services reported fourth-quarter earnings of $1.13 a share, excluding some items, beating the average analyst estimate of $1.12, Bloomberg data show.
Expedia Inc. (EXPE US) slumped 17 percent to $21.31 for the biggest retreat in the Standard & Poor’s 500 Index. The online travel company was cut to “hold” from “buy” at Benchmark Co. The 12-month price estimate is $26. Benchmark also cut Orbitz Worldwide Inc. (OWW US) to “hold” from “buy.” The shares fell 11 percent to $4.26.
FalconStor Software Inc. (FALC US) gained 29 percent, the most since April 1999, to $4.78. The maker of data-protection software reported fourth-quarter earnings excluding some items of 5 cents a share. Gary Spivak, an analyst at Noble Financial Group Inc., estimated a loss of 6 cents.
Green Dot Corp. (GDOT US) declined 6 percent, the most since Dec. 8, to $54.80. The provider of pre-paid debit cards reported fourth-quarter earnings excluding certain items that missed the average analyst estimate by 35 percent. The stock was cut to “sell” from “neutral” at Janney Montgomery Scott LLC.
JDS Uniphase Corp. (JDSU US) climbed the most in the S&P 500, rising 12 percent to $28.16. The biggest network-analysis company in the U.S. had its share-price estimate increased to $30 from $25 by Stifel Nicolaus, which said the company’s sales and profit margin will expand in coming quarters.
Joe’s Jeans Inc. (JOEZ US) had the second biggest decline in the Russell 2000 Index, slumping 25 percent to $1.12. The maker of denim apparel reported fourth-quarter sales of $23.6 million, trailing the average analyst estimate by 17 percent, according to Bloomberg data.
Kraft Foods Inc. (KFT US) had the biggest loss in the Dow Jones Industrial Average, sliding 1.5 percent to $30.66. The world’s second-largest food company lowered its full-year earnings forecasts because of rising commodity costs. Profit excluding certain items such as integration costs will increase 11 percent to 13 percent. That’s down from the company’s November projection of a rise in the “mid-teens.”
MannKind Corp. (MNKD US) tumbled 25 percent to $3.79 after slipping to $3.79 earlier, the lowest price since April 2009. The Valencia, California-based biotechnology company founded by billionaire inventor Alfred Mann said it is cutting about 41 percent of its workforce.
M.D.C. Holding Inc. (MDC US) fell 11 percent, the most since February 2009, to $27.87. The homebuilder reported a fourth-quarter loss of 65 cents a share, wider than the 16-cent average analyst estimate in a Bloomberg survey.
Neurocrine Biosciences Inc. (NBIX US) gained 6.8 percent, the most since Oct. 20, to $7.84. The San Diego-based drugmaker reported fourth-quarter sales of $13.7 million, beating the average analyst estimate of $12.6 million in a Bloomberg survey.
News Corp. (NWSA US) rose 3.8 percent to $17.40, the highest price since June 2008. Rupert Murdoch, chairman and chief executive officer of the owner of Fox Broadcasting, bought 1.2 million shares on Feb. 8, according to a Securities and Exchange Commission filing.
Nokia Oyj (NOK US) dropped 14 percent, the most since July 2009, to $9.36. The world’s biggest maker of mobile phones announced that it will use Microsoft’s Windows Phone as its primary software platform -- a sign of the depth of the challenge in taking on Apple’s iOS and Google’s Android.
Orthovita Inc. (VITA US) soared 15 percent, the most since January 2009, to $2.53. The maker of synthetic tissue and bone products said it received clearance from the U.S. Food and Drug Administration to sell Vitoss BA Bimodal Bone Graft Substitute and the product will be introduced in nine to 12 months.
Panera Bread Co. (PNRA US) climbed 16 percent to a record $116.11. The bakery-cafe chain lifted its full-year earnings estimate for 2011 to as much as $4.45 a share, up from previous guidance of as much as $4.35 a share.
Rackspace Hosting Inc. (RAX US) gained 8.2 percent to $40.07, the highest price since its August 2008 initial public offering. The web-based IT system delivery company reported fourth-quarter revenue of $214.7 million, beating the average analyst estimate of $210.1 million, Bloomberg data show.
Scana Corp. (SCG US) fell 4.1 percent, the most since February 2009, to $40.67. The owner of South Carolina Electric & Gas Co. forecast 2011 profit of $2.95 to $3.10 a share, compared with an average analyst estimate of $3.21 in a Bloomberg survey.
Stamps.com Inc. (STMP US) rose 8.3 percent, the most since Oct. 29, to $13.83. The seller of postage over the Internet forecast 2011 earnings of as much as $1.05 a share. Needham & Co. estimated the company would earn 85 cents.
Wabco Holdings Inc. (WBC US) rose 8.8 percent, the most since Dec. 21, to $62.23. The supplier of truck braking and suspension systems reported fourth-quarter profit excluding some items of $1.01 a share, beating the average analyst estimate by 12 percent, according to Bloomberg data
Wright Medical Group Inc. (WMGI US) rose 9.5 percent, the most since November 2008, to $16.54. The orthopedic device company forecast earnings in 2011 to be as much as 95 cents a share, exceeding the 88-cent average estimate of analysts.
Wynn Resorts Ltd. (WYNN US) rose 7.5 percent to $129.10, the highest price since November 2007. The owner of the Wynn and Encore casinos reported fourth-quarter profit was 91 cents a share, beating analysts’ estimates of 70 cents s share after opening a second resort in Macau.