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.
Homebuilders advanced after an International Strategy & Investment homebuilders’ sales survey reached the highest point in six years. DR Horton Inc. (DHI US) climbed 3.4 percent to $17.22. Lennar Corp. (LEN US) rose 2.7 percent to $29.02. PulteGroup Inc. (PHM US) rallied 2.4 percent to $10.27.
American Eagle Outfitters Inc. (AEO US) climbed 17 percent to $20.90 for the biggest advance since 2000. The teen-clothing retailer said first-quarter profit rose to 18 cents to 20 cents a share, beating the average analyst estimate of 10 cents.
Bankrate Inc. (RATE US) plunged 15 percent, the most since it went public in June, to $20.19. The online publisher of personal finance information reported first-quarter earnings and revenue that fell short of the average analyst estimate.
Ceva Inc. (CEVA US) retreated 22 percent, the most since at least November 2002, to $17.55. The chip designer cut its 2012 revenue forecast to no more than $61.2 million.
Charming Shoppes Inc. (CHRS US) rallied 24 percent to $7.31, the highest price since November 2007. The owner of the Lane Bryant chain, which specializes in women’s plus-size apparel, agreed to be bought by Ascena Retail Group Inc. (ASNA US) for $890 million, or $7.35 a share. Ascena rose 10 percent to $21.06.
Chesapeake Energy Corp. (CHK US) dropped 15 percent, the most in the Standard & Poor’s 500 Index, to $16.74. The second-largest U.S. natural-gas producer reported an unexpected first-quarter loss, cut cash flow estimates, reduced its drilling budget and said it may run out of money next year under the weight of the lowest natural-gas prices in a decade.
Clorox Co. (CLX US) fell 3.2 percent, the most since Sept. 26, to $67.80. The bleach maker projected 2013 earnings per share of no more than $4.35, less than the average analyst estimate of $4.42 per share.
Con-way Inc. (CNW US) advanced 13 percent, the most since July 2009, to $37. The U.S. trucking company said it earned 45 cents a share excluding some items in the first quarter. Analysts, on average, estimated 34 cents, according to a Bloomberg survey.
Endeavour International Corp. (END US) plunged 24 percent, the most since December 2008, to $9.77. The Houston-based oil and gas exploration company said it and ConocoPhillips are continuing talks to complete a North Sea acquisition and reported a first-quarter loss wider than analysts projected.
OpenTable Inc. (OPEN US) sank 15 percent, the most since it went public in May 2009, to $37.13. The online restaurant-reservation service forecast revenue in 2012 of no more than $164 million, compared with the average analyst estimate of $168.5 million.
Papa John’s International Inc. (PZZA US) advanced 20 percent, the most since at least 1993, to $47.36. The pizza maker boosted its annual earnings estimate to as much as $2.50 a share, compared with the average analyst estimate of $2.42, data compiled by Bloomberg show.
Peet’s Coffee & Tea Inc. (PEET US) decreased 8.1 percent, the most since March 2011, to $69.12. The maker of whole bean coffee posted a first-quarter profit of 25 cents a share, missing the average analyst estimate of 31 cents.
Plantronics Inc. (PLT US) declined 12 percent, the most since January 2008, to $33.43. The maker of headsets forecast first-quarter earnings of no more than 63 cents a share, lower than the 68-cent profit projected by analysts on average.
Protalix BioTherapeutics Inc. (PLX US) jumped 13 percent, the most since Oct. 24, to $7.01. The biopharmaceutical company’s first product, a treatment for Gaucher disease, won approval from the U.S. Food and Drug Administration.
ReachLocal Inc. (RLOC US) rose 18 percent, the most since April 2011, to $8.86. The company that helps businesses buy online advertising was raised to buy from hold at Craig-Hallum Capital Group Ltd.
R.R. Donnelley & Sons Co. (RRD US) slipped 6.9 percent, the most since Jan. 17, to $11.81. The largest North American printer reported first-quarter sales of $2.52 billion, trailing the average analyst estimate of $2.56 billion in a Bloomberg survey.
Standard Microsystems Corp. (SMSC US) surged 39 percent, the most in the Russell 2000 Index, to $36.43. The developer of technology to enable the data connections in USB devices and wireless-audio products agreed to be bought by Microchip Technology Inc. (MCHP US) for about $939 million, or $37 a share.
STR Holdings Inc. (STRI US) rallied 28 percent, the most since November 2009, to $4.87. The solar-panel parts maker was raised to buy from hold at Craig-Hallum Capital Group Ltd.
TripAdvisor Inc. (TRIP US) surged 17 percent to $42.63 for the biggest increase in the S&P 500. The online travel-recommendation service spun off from Expedia Inc. reported first-quarter profit and sales that topped some analysts’ estimates.
Ubiquiti Networks Inc. (UBNT US) slumped 17 percent to $28.90, the biggest decline since it went public in October. The provider of wireless-network equipment was cut to hold from buy at Wunderlich Securities Inc.
Vishay Intertechnology Inc. (VSH US) rose 11 percent, the most since Jan. 18, to $12.42. The maker of electronic components reported first-quarter profit of 21 cents a share, beating the average analyst estimate by 25 percent, according to data compiled by Bloomberg.
Web.com Group Inc. (WWWW US) surged 20 percent, the most since Aug. 4, to $15.39. The company that builds websites for small businesses posted first-quarter profit excluding some items of 35 cents a share, 13 percent higher than the average analyst estimate in a Bloomberg survey.