The top pre-market NASDAQ stock market gainers are: Blue Coat Systems, Silver Standard Resources, Golar LNG, Logitech and Perrigo. The top pre-market NASDAQ losers are: Sears Holdings, Lattice Semiconductor, Intel, ProShares UltraPro and First Niagara Financial.

Gainers

Blue Coat Systems, Inc. (NASDAQ:BCSI) shares soared 45.54 percent, or $7.96, to $25.44 after it agreed to be acquired by an investor group led by Thoma Bravo LLC, for about $1.3 billion. Shareholders to get $25.81 in cash a share, representing a premium of 48 percent over Dec.8 closing price.

Shares of Silver Standard Resources, Inc. (NASDAQ:SSRI) were up 4.46 percent, or 64 cents, to $15.

Golar LNG Limited (NASDAQ:GLNG) shares rose 3.30 percent, or $1.39 percent, to $43.51.

Logitech International S.A. (NASDAQ:LOGI) gained 2.83 percent, or 23 cents, to $8.36.

Perrigo Co. (NASDAQ:PRGO) shares advanced 2.68 percent, or $2.61, to $100 after S&P said Perrigo would replace Monster Worldwide Inc. (NYSE: MWW) in the S&P 500 index.

Losers

Shares of Sears Holdings Corp. (NASDAQ:SHLD) fell 3.94 percent, or $2.30, to $56.04.

Lattice Semiconductor Corp. (NASDAQ:LSCC) declined 3.49 percent, or 23 cents, to $6.36 after it agreed to buy SiliconBlueTechnologies for about $62 million in cash.

Intel Corp. (NASDAQ:INTC) shares dropped 1.38 percent, or 34 cents, to $24.37.

Shares of ProShares UltraPro Short QQQ (NASDAQ:SQQQ) fell 1.36 percent, or 27 cents, to $19.60.

Shares of First Niagara Financial Group, Inc. (NASDAQ:FNFG) declined 1.03 percent, or 9 cents, to $8.66. The company said Thursday it has priced an underwritten public offering of $300 million aggregate principal amount of its 7.25 percent subordinated notes due 2021, at a price to the public of 100.00 percent of their principal amount plus accrued interest from Dec. 13, 2011.