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.
Advanced Micro Devices Inc. (AMD US) rose 4.5 percent, the most since Nov. 4, to $7.83. The second-largest maker of computer microprocessors gained after bigger rival Intel Corp. (INTC US) said it has discovered a design flaw in a recently released support chip, the Intel 6 Series, code-named Cougar Point, and has implemented a silicon fix.
AsiaInfo-Linkage Inc. (ASIA US) climbed 17 percent, the most since December 2009, to $21.46. The Chinese supplier of software for phone companies reported fourth-quarter sales that beat analysts’ estimates and said it won a contract from China Unicom (Hong Kong) Ltd. (762 HK) to provide products in the country’s six provinces.
Borders Group Inc. (BGP US) declined 14 percent to 73 cents, its lowest price since March 2009. The second-largest U.S. bookstore chain issued a statement yesterday saying it wouldn’t make payments due in January to some suppliers, landlords and others.
Chesapeake Energy Corp. (CHK US) rose 8.1 percent to $29.53, the highest price since October 2008. Cnooc Ltd. agreed to pay $570 million in cash for a one-third stake in the second-biggest U.S. natural gas producer’s Niobrara shale project. The Chinese explorer also agreed to pay 66.7 percent of Chesapeake’s costs up to $697 million to drill and complete wells in the area, the companies said in a statement yesterday.
Ciena Corp. (CIEN US) slid 6.3 percent, the most since Oct. 19, to $22.03. The maker of network gear for the biggest U.S. phone companies was cut to “sell” at UBS AG. The 12-month share-price estimate is $19.
DepoMed Inc. (DEPO US) surged 34 percent to $8.38 for the biggest increase in the Russell 2000 Index. The drugmaker said the U.S. Food and Drug Administration approved Gralise, a once-daily treatment for pain following healing of the rash associated with shingles, triggering a payment of $48 million from Abbott Laboratories (ABT US).
Exxon Mobil Corp. (XOM US) climbed 2.1 percent to $80.68, the highest price since January 2009. The world’s largest company posted fourth-quarter net income of $9.25 billion, its biggest quarterly profit in more than two years as energy demand boosted oil and fuel prices. Per-share earnings beat the average analyst estimate in a Bloomberg survey by 13 percent.
Gannett Co. (GCI US) fell 3 percent, the most since Oct. 15, to $14.74. The owner of 82 newspapers as well as television stations reported fourth-quarter sales of $1.46 billion, trailing the average analyst estimate of $1.47 billion in a Bloomberg survey.
Heico Corp. (HEI US) climbed 5.3 percent, the most since Sept. 20, to $52.29. The maker of jet engine parts was upgraded to “outperform” from “sector perform” at RBC Capital Markets.
Masimo Corp. (MASI US) jumped 8.7 percent, the most since August 2009, to $29.98. The maker of medical devices said Covidien Plc (COV US) will pay a royalty of 7.75 percent of its U.S. sales of pulse oximetry products, starting in March, under an amended agreement.
Massey Energy Co. (MEE US) rose 9.8 percent to $62.86 for the second-biggest advance in the Standard & Poor’s 500 Index. Alpha Natural Resources Inc. (ANR US), the third-biggest U.S. coal producer, agreed to buy the Richmond, Virginia-based coal company for about $7.1 billion in a deal that values Massey at $69.33 a share, 21 percent more than its price at the close of trading Jan. 28. Massey stockholders will receive 1.025 Alpha Natural shares plus $10 cash for each share. Alpha Natural fell 7.2 percent to $53.73.
Motorola Mobility Holdings Inc. (MMI US) fell the most in the S&P 500, sliding 5.8 percent to $28.87. The smartphone maker spun off from Motorola Inc. was rated “neutral” in new coverage by UBS AG, which said “it’s too early to jump on bandwagon” to take advantage of the company’s “turnaround potential.”
NPS Pharmaceuticals Inc. (NPSP US) climbed 31 percent, the most since February 2000, to $10.01. The Bedminster, New Jersey-based company said its experimental therapy, Gattex, helped restore normal intestinal function in patients with a rare bowel condition in a study, clearing the way to apply for regulatory approval.
Orexigen Therapeutics Inc. (OREX US) rose 9.3 percent, the most since Dec. 8, to $9.09. The U.S. Food and Drug Administration is scheduled to decide by today whether to approve the biotechnology company’s Contrave diet pill.
Pall Corp. (PLL US) rose 14 percent to $55.41 for the biggest gain in the S&P 500. The supplier of filters for drugmakers and refineries said Chairman and Chief Executive Officer Eric Krasnoff plans to retire in March 2012. The retirement is “a catalyst for the company to merge or become acquired,” Credit Suisse Group AG said in a note, raising the stock’s rating to “outperform” from “neutral.”
Pre-Paid Legal Services Inc. (PPD US) rallied 9.3 percent, the most since Oct. 25, to $65.84. The company, which sells memberships for legal services, agreed to be bought for $66.50 by MidOcean PPL Holdings Corp.
Rubicon Technology Inc. (RBCN US) slipped 4.7 percent to $18.01, the lowest price since March 9. The maker of crystalline products rallied after Russia’s OAO Monocrystal postponed a planned international share sale because of market volatility.
Thomas & Betts Corp. (TNB US) advanced 8.7 percent to $51.39, the highest price since December 2007. The Memphis, Tennessee-based manufacturer of electrical components posted fourth-quarter profit excluding some items of 77 cents a share, beating the average analyst estimate by 21 percent, according to Bloomberg data.