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.
Solar shares gained as chief executive officers from Suntech Power Holdings Co. (STP US) and Trina Solar Ltd. (TSL US) said China may double its installations of solar panels this year, absorbing excess production that depressed prices and margins in 2011. Suntech added 7.7 percent to $3.49. Trina rose 7.3 percent to $8.67. First Solar Inc. (FSLR US) climbed 11 percent to $45.54 for the biggest gain in the Standard & Poor’s 500 Index.
Cepheid Inc. (CPHD US) surged 26 percent to $43.14, the highest price since its initial public offering in 2000. The maker of a rapid test for drug-resistant staph infections reported fourth-quarter revenue of $80.1 million, surpassing the average analyst estimate of $73.9 million.
Chevron Corp. (CVX US) fell the most in the Dow Jones Industrial Average, sinking 2.5 percent to $103.96. The second-largest U.S. energy company reported its biggest decline in quarterly earnings in two years after refining losses undercut gains from record fourth-quarter crude prices.
Cirrus Logic Inc. (CRUS US) slid 8.3 percent, the most since Oct. 20, to $20.23. The supplier of parts for Apple’s iPhone and iPad forecast fourth-quarter revenue will be at least $108 million, exceeding the average analyst estimate of $103.8 million.
DeVry Inc. (DV US) fell 5.4 percent, the most since Oct. 26, to $37.57. The for-profit education company reported second-quarter adjusted earnings of 92 cents a share, missing the average analyst estimate of $1.01.
Emulex Corp. (ELX US) rose 15 percent, the most since April 2009, to $10.66. The chipmaker forecast adjusted third-quarter profit of at least 17 cents a share. Analysts project 15 cents a share, according to the average estimate in a Bloomberg survey.
Frontier Communications Corp. (FTR US) slipped 3.6 percent to $4.31, the lowest price since at least 1988. The phone company serving rural U.S. markets fell after Standard & Poor’s revised its outlook to “negative” from “stable.”
Green Dot Corp. (GDOT US) fell 10 percent, the most since April 29, to $28.59. The prepaid debit card company reported fourth-quarter revenue that missed the average analyst estimate.
Infinity Pharmaceuticals Inc. (INFI US) plunged 40 percent, the most in the Russell 2000 Index, to $5.98. The Cambridge, Massachusetts-based said it is stopping a trial of its anti-tumor drug known as IPI-926 after it didn’t meet the study endpoint of overall patient survival.
Informatica Corp. (INFA US) advanced 13 percent, the most since April 2009, to $43.37. The corporate-software company reported fourth-quarter earnings of 47 cents a share, beating the average analyst estimate by 3 cents.
InvenSense Inc. (INVN US) jumped 14 percent, the most since Nov. 18, to $14.52. The supplier of motion-processing equipment used in Nintendo Co. video-game devices reported third-quarter sales and earnings that beat analysts’ expectations.
Legg Mason Inc. (LM US) retreated 4.8 percent, the most since Nov. 9, to $26.02. The Baltimore-based money manager with 17 straight quarters of redemptions said fiscal third-quarter profit declined 54 percent as assets fell, lowering fees for managing investors’ money.
Federated Investors Inc. (FII US) an investment management firm whose fourth-quarter results also missed analysts’ estimates, slumped 5.9 percent to $17.60.
Newell Rubbermaid Inc. (NWL US) gained 8 percent to $18.82, the highest price since April 29. The maker of Sharpie pens and Graco car strollers reported fourth-quarter earnings of 40 cents a share, excluding some items, beating the average analyst estimate of 38 cents.
ResMed Inc. (RMD US) increased 10 percent, the most since April 2010, to $30.06. The world’s second-biggest maker of machines for breathing-related sleep disorders posted record second-quarter profit.
Riverbed Technology Inc. (RVBD US) dropped 18 percent, the most since July 20, to $24.45. The maker of computer-networking products announced first-quarter sales and profit forecasts that fell short of analysts’ estimates.
Robert Half International Inc. (RHI US) slipped 6.8 percent, the most since Aug. 10, to $27.75. The staffing company reported fourth-quarter profit of 30 cents a share, trailing the average analyst estimate of 31 cents in a Bloomberg survey.
Solutia Inc. (SOA US) surged 41 percent to $27.52 for the biggest gain in the Russell 1000 Index. Eastman Chemical Co. (EMN US) agreed to buy the St. Louis-based chemical maker for about $4.7 billion, including debt, to drive expansion into higher-margin specialty plastics and chemicals.
Eastman jumped 7 percent to $50.41.
WMS Industries Inc. (WMS US) rose 13 percent, the most since April 2009, to $23.70. The maker of Monopoly and Wizard of Oz slot machines said it expects quarterly sequential improvement in sales and operating margin to accelerate in the second half of this year.