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Intel Corp. (INTC) fell the most in the Dow Jones Industrial Average, sinking 1.5 percent to $19.49. The Federal Trade Commission sued the world's leading computer chipmaker, accusing it of illegally using its dominant market position for a decade "to stifle competition and strengthen its monopoly."
Intel's smaller rivals gained. Nvidia Corp. (NVDA) had the biggest advance in the S&P 500, jumping 6.6 percent to $16.68. Advanced Micro Devices Inc. (AMD) rose 5.2 percent to $9.28.
Mariner Energy Inc. (ME) fell the most in the Russell 1000 Index, sinking 9.4 percent to $11.63. The oil and gas company said it agreed to buy Edge Petroleum Corp. (EPEXQ) for about $215 million.
Playboy Enterprises Inc. (PLA) sank 12 percent to $3.37 and slipped earlier to $3.15, the lowest intraday price since Nov. 12. Iconix Brand Group Inc. (ICON), owner of London Fog and Danskin, is breaking off talks to buy Playboy after determining it would be too complicated to separate the Playboy brand from the company's other assets, said two people familiar with the matter.
Prudential Financial Inc. (PRU) added 4.6 percent to $51.43 and increased earlier to $51.97, the highest intraday price since Oct. 20. The second-biggest U.S. life insurer said it will record a $1.5 billion gain from the sale of a stake in a Wells Fargo & Co. (WFC) securities brokerage unit.
Roper Industries Inc. (ROP) gained 3.3 percent to $55.02 and climbed 4 percent earlier, the most intraday since June 4. The maker of radio-frequency tags and automatic meter readers was picked to replace Ensco International Inc. (ESV) in the Standard & Poor's 500 Index after the close of trading on Dec. 22, S&P said.
TW Telecom Inc. (TWTC) had the biggest gain in the Russell 1000 Index, jumping 7.3 percent to $16.90. The provider of telephone and Internet service to businesses will replace Roper in the S&P MidCap 400.
Royal Caribbean Cruises Ltd. (RCL) gained 4.9 percent to $27.20 and advanced earlier to $27.26, the highest intraday price since September 2008. The world's second-largest cruise operator was raised to "overweight" from "neutral" at JPMorgan Chase & Co.
YRC Worldwide Inc. (YRCW) rose 15 percent to 95 cents and rallied as much as 28 percent, the most intraday since Nov. 13. The biggest U.S. trucker by sales, seeking to avoid bankruptcy by exchanging equity for debt, has extended the deadline for bondholders to accept its offer to 11:59 p.m. tomorrow, after failing to reach a required threshold yesterday.
To contact the reporter on this story: Lu Wang in New York at lwang8@bloomberg.net
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