Ceradyne, Dollar General, Sonic, Trident: U.S. Equity Movers

Shares of the following companies had unusual moves in U.S. trading. Stock symbols are in parentheses and prices are as of 4:00 p.m. in New York.

American International Group Inc. (AIG US) rose 7.3 percent to $60.95 for the second-biggest gain in the Standard & Poor’s 500 Index. The insurer selling assets to repay a U.S. bailout told regulators it was offered as much as $3 billion for its Taiwan-based unit Nan Shan Life Insurance Co.

Autodesk Inc. (ADSK US) increased 7.1 percent to $41.24 for the third-biggest gain in the S&P 500. The maker of software used in bridge design and movie special effects was raised to “buy” from “neutral” at Goldman Sachs Group Inc.

Boyd Gaming Corp. (BYD US) climbed 8.7 percent to $11.65, the highest price since June 4. The operator of gaming properties was raised to “overweight” from “equal weight” at Barclays Plc.

Ceradyne Inc. (CRDN US) rose 6.3 percent to $33.59, the most since Sept. 1. The maker of ceramic body armor for U.S. soldiers was boosted to “buy” from “hold” at ThinkEquity LLC.

Expedia Inc. (EXPE US) climbed 4.1 percent to $25.43, the most since Oct 5. Greyhound, the largest provider of intercity bus transportation in North America, said it will partner with the online travel company to offer booking services.

Family Dollar Stores Inc. (FDO US) slumped 8.8 percent to $44.99 for the biggest decline in the S&P 500. The second- biggest dollar-store chain in the U.S. reported first-quarter profit was 58 cents a share, missing the 61-cents average estimate of analysts surveyed by Bloomberg.

Dollar Tree Inc. (DLTR US), another discount retailer store, dropped 4.9 percent to $52.08. Dollar General Corp. (DG US) declined 1.4 percent to $30.10.

Ford Motor Co. (F US) rose 3 percent to $17.89, the highest price since May 2002. The motor vehicle maker matched Toyota Motor Corp. of Japan as the most favorably viewed auto brand by U.S. consumers in a survey released today by Consumer Reports magazine.

LCA-Vision Inc. (LCAV US) rallied 32.6 percent to $7.56 for the biggest advance in the Russell 2000 Index. The operator of laser-eye-surgery centers said same-store procedures climbed 6 percent from a year earlier during the fourth quarter.

Leap Wireless International Inc. (LEAP US) rose 6.2 percent to $14.33. The pay-as-you-go mobile-phone provider said it gained about 435,000 customers during the fourth quarter.

Mattson Technology Inc. (MTSN US) dropped 10.9 percent to $2.28, the most since Oct. 21. The Fremont, California-based maker of equipment for semiconductors said its fourth-quarter loss was “significantly” wider than it had forecast because of delays in shipments.

Nvidia Corp. (NVDA US) rose 7.7 percent to $16.98, the highest price since April 20. The maker of graphics semiconductors was upgraded to overweight from equal-weight at Barclays Plc. Tim Luke, the analyst, said in a report the company’s Tegra chip “may be gaining good traction” on Android smartphones and tablet computers.

PepsiCo Inc. (PEP US) rose 1.8 percent to $66.59, the most since July 20. The snack-food maker was rated “overweight” in new coverage at Morgan Stanley and added to the firm’s Best Ideas list. Dara Mohsenian, the analyst, said in a report the company has “very attractive valuation in light on longer-term positives.”

Qiao Xing Universal Resources Inc. (XING US) surged 16 percent to $3.44, the highest price since September 2008. The mining company said it bought a 34.5 percent stake in Chifeng Aolunhua Mining Co., a copper-molybdenum mining company, for $28 million.

Sonic Corp. (SONC US) advanced 12 percent to $11.31, the most since November 2008. The Oklahoma City-based operator of drive-in restaurants said first-quarter same-store sales fell 2.4 percent and earnings excluding one-time items matched the average analyst estimate.

Tasty Baking Co. (TSTY US) slumped 37 percent to $4.05, the most since at least 1980. The maker of Tastykake snacks said it is currently experiencing “extremely tight liquidity” and it didn’t achieve the expected operational cash savings from its new Philadelphia bakery during the fourth quarter as a result of production difficulties.

Trident Microsystems Inc. (TRID US) fell the most in the Russell 2000 Index, slumping 14.7 percent to $1.63. The maker of graphics chips for digital televisions said fourth-quarter sales were $120 million at most, missing its earlier forecast.

Vonage Holding Corp. (VG US) surged 14.4 percent to $2.63, the most since June 15. The New Jersey Internet phone carrier said it had net line additions for the first time in more than two years in the fourth quarter.

Walt Disney Co. (DIS US) rose the most in the Dow Jones Industrial Average, gaining 2.5 percent to $39.96. Shanghai will begin building infrastructure this year to support the U.S. company’s first mainland China theme park, the local government said.

Youku.com Inc. (YOKU US) climbed 6.4 percent to $37.92. The largest online video site in China said it’s working with a “major” Hollywood studio to provide on-demand paid video service.

To contact the reporter on this story: Elizabeth Stanton in New York at estanton@bloomberg.net

To contact the editor responsible for this story: Nick Baker at nbaker7@bloomberg.net.

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