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Stocks advanced as a series of merger deals excited investors, pushing the blue-chip indices to two-and-a-half-year highs in the absence of significant economic news.

U.S. stocks advanced in early trade on Monday with the S&P 500 Index gaining 4.88 points, or 0.37 percent, to trade at 1,315.75 at 9:50 a.m. EDT. The Dow Jones Industrial Average advanced 36.63 points, or 0.30 percent, to trade at 12,128.78. The Nasdaq Composite Index gained 0.31 percent.

The companies whose shares are moving in pre-market trade on Monday are: Bristol Myers Squibb, Chesapeake Energy, Sprint Nextel, Valero Energy, Bank of America, Aetna, Verizon Communications, Weyerhaeuser, Nvidia and Corning.

The companies whose shares are moving in pre-market trade on Friday are: JDS Uniphase, Aetna, PulteGroup, Symantec, Tesoro, Las Vegas Sands, Fiserv and Wynn Resorts.

The top after-market NYSE gainers on Thursday are: Alliant Techsystems, Goodyear Tire & Rubber, Tyson Foods, Vonage Holdings and China Yuchai International. The top after-market NYSE losers on Thursday are: DHT Holdings, Teekay Tankers, RealD, Las Vegas Sands and Netsuite.

The companies whose shares are moving in pre-market trade on Thursday are: Dow Chemical, GameStop, Yum Brands, CF Industries Holdings, Micron Technology, Merck & Co and Cvs Caremark.

The top after-market NYSE gainers on Wednesday are: Magnetek, Hartford Financial, Magna International, NeoPhotonics and 99 Cents Only Stores. The top after-market NYSE losers on Wednesday are: Ameriprise Financial, Ace, International Coal Group, Global Partners and InterXion Holding.

The top after-market NYSE gainers on Tuesday are: First Marblehead, Hershey Foods, MEMC Electronic, Timberland, Elan Corp, United Microelectronics, Bank of Ireland, NRG Energy and RSC Holdings

The top after-market NYSE losers on Tuesday are: North American Energy Partners, United Rentals, Global Cash Access, Statoil ASA, Liz Claiborne, ProLogis, Boston Scientific, Mechel Steel Group and Cash Store Financial Services.

The companies whose shares are moving in pre-market trade on Tuesday are: Lexmark International, Archer Daniels Midland, Novellus Systems, Advanced Micro Devices, Monster Worldwide, Eastman Chemical, BP and Ventas.

The companies which are expected to see active trade on Tuesday are: BP, Pfizer, C.H. Robinson, Emerson, United Parcel, McGraw Hill Companies, Lexmark International and Cummins.

The top after-market NYSE gainers on Monday are: Longtop Financial Technologies, Manitowoc Co, Camelot Information, Concord Medical Services and Aercap Holdings. The top after-market NYSE losers on Monday are: Exterran Holdings, Hovnanian Enterprises, Fifth Street Finance, Seaspan and Nabors Industries.

The companies whose shares are moving in pre-market trade on Friday are: Sara Lee, Micron Technology, Bank of America, Amazon, Ford Motor and Carnival Corp.

The companies which are expected to see active trade on Friday are: Microsoft, Amazon, Ford Motor, Chevron, Honeywell International, Dominion Resources and American Electric Power.

The companies whose shares are moving in pre-market trade on Thursday are: Netflix, Teradyne, Qualcomm, Symantec, AT&T, Goodyear Tire & Rubber and Procter & Gamble.

The top after-market NYSE gainers on Wednesday are: AMB Property, Teradyne, ProLogis, Astoria Financial and DCT Industrial Trust. The top after-market NYSE losers on Wednesday are: Quantum Corp, Murphy Oil, Motorola, Robert Half International and LDK Solar.

The companies whose shares are moving in pre-market trade on Wednesday are: Western Digital, AK Steel Holding, Salesforce.com, United States Steel, Micron Technology, CA, Boeing, Xerox and Yahoo.

The top after-market NYSE gainers on Tuesday are: W.W. Grainger, DeVry, Navios Maritime, Fifth Street Finance and Navistar International. The top after-market NYSE losers on Tuesday are: WMS Industries, Elan Corp, Swift Transportation, Genpact and Ennis.

The companies whose shares are moving in pre-market trade on Tuesday are: KeyCorp, Baker Hughes, Marathon Oil, Peabody Energy, Travelers Companies, Halliburton, Carnival, Tellabs and Harley-Davidson.

The companies which are expected to see active trade on Tuesday are: DuPont, Verizon, Yahoo, Johnson & Johnson, 3M, W.W. Grainger, EMC and Vmware.

The top after-market NYSE gainers on Monday are: Ethan Allen Interiors, BBVA Banco Frances, RLI Corp, Albemarle and Domino's Pizza. The top after-market NYSE losers on Monday are: Eastman Kodak, Packaging Corp, Vmware, Sanofi-Aventis and W.W. Grainger.