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.
Accuray Inc. (ARAY US) dropped 10 percent, the most since August 2009, to $7.98. The maker of robotic cancer treatment products reported first-quarter sales of $54.7 million, missing the average analyst estimate by 7.6 percent, Bloomberg data show.
Barnes & Noble Inc. (BKS US) jumped 13 percent to $14.37, the highest price since Feb. 23. The largest U.S. bookstore chain was rated “buy” in new coverage by Janney Capital Markets, which said the company “has the potential for earnings well in excess of their previous peak earnings.”
CarMax Inc. (KMX US) fell the most in the Standard & Poor’s 500 Index, losing 6 percent to $31.81. Same-store sales at the largest U.S. seller of used cars are pacing below analysts’ estimated in the fiscal first quarter after a slowdown in April, Investment Technology Group said in a note to clients.
CF Industries Holdings Inc. (CF US) rallied 6.6 percent, the most since Oct. 8, to $137.82. The world’s second-largest maker of nitrogen fertilizer reported first-quarter earnings of $3.91 a share, exceeding the $3.08 average estimate by analysts.
Echelon Corp. (ELON US) surged 15 percent, the most since August 2009, to $10.16. The maker of energy-saving equipment said its full-year revenue will be at the higher end of its previous forecast. Dougherty & Co. boosted the stock’s rating to “buy” from “neutral.”
Fluor Corp. (FLR US) gained 7.9 percent, the most since Nov. 5, to $70.87. The largest publicly traded U.S. construction company said first-quarter profit rose 2.3 percent as higher metal prices spurred mining projects.
GSI Technology Inc. (GSIT US) fell a record 22 percent to $6.50. The supplier of network semiconductors forecast first-quarter sales of $23 million at most, trailing the average analyst estimate of $25.3 million in a Bloomberg survey.
Hansen Natural Corp. (HANS US) climbed 4.5 percent, the most since Feb. 25, to $64.74. Strong sales of Monster Energy drinks helped the beverage maker post first-quarter profit of 59 cents a share, beating the average of analyst estimates by 20 percent, Bloomberg data show.
Immersion Corp. (IMMR US) rose 13 percent, the most since March 2009, to $8.02. The software company reported first-quarter sales of $9.8 million, beating the average analyst estimate by 33 percent, Bloomberg data show.
Kraft Foods Inc. (KFT US) rose 2.1 percent, the most since Sept. 24, to $34.08. The world’s second-largest food company reported first-quarter profit excluding some items was 52 cents a share, exceeding the 47-cent average estimate by analysts.
LSB Industries Inc. (LXU US) rose 17 percent, the most since May 2009, to $43.52. The maker of chemical and climate-control products reported first-quarter profit of 90 cents a share, beating the average analyst estimate.
Nature’s Sunshine Products Inc. (NATR US) rose 31 percent, the most since June 2009, to $10.77. The maker of nutritional and personal care products said first-quarter profit increased to 43 cents a share from 31 cents a share a year earlier.
Obagi Medical Products Inc. (OMPI US) slumped 24 percent, the most since March 2008, to $9.80. The maker of physician-dispensed skin-care treatments lowered its full-year earnings forecast to no more than 78 cents a share from at least 87 cents in previous guidance.
Sapient Corp. (SAPE US) surged 15 percent, the most since November 2008, to $13.79. The technology consulting company said second-quarter service revenue may be as much as $257 million, exceeding the average analyst estimate of $246 million.
Warner Chilcott Plc (WCRX US) climbed 5.9 percent, the most since Oct. 11, to $23.50. The pharmaceutical company focused on women’s health care reported first-quarter adjusted earnings of $1.04 a share, beating the 83-cent average analyst estimate.
Weight Watchers International Inc. (WTW US) declined 4.7 percent, the most since Nov. 10, to $71.45. The weight-control program provider reported first-quarter profit of $1 a share, topping the 89-cent average analyst estimate.