The top pre-market NASDAQ Stock Market gainers are: Imperial Sugar, RAM Energy Resources, Rambus, Logitech International, Micron Technology, Melco Crown Entertainment, Research In Motion and Apple. The top pre-market NASDAQ Stock Market losers are: Zions Bancorp. and Key Technology.

Gainers

Imperial Sugar Co. (IPSU) stock jumped 11.20 percent to $3.97 in pre-market trading.

Rambus Inc. (RMBS) stock grew 9.14 percent to $8.24 in pre-market trading. The company said it raised fourth quarter revenue guidance to about $83 million from previous forecast of $66 million to $71 million, while a Wall Street analyst predicts $69 million.

RAM Energy Resources, Inc. (RAM) stock grew 7.03 percent to $3.35 in pre-market trading.

Logitech International SA (LOGI) stock gained 6.43 percent to $8.28 in pre-market trading.

Micron Technology Inc. (MU) stock increased 5.41 percent to $6.63 in pre-market trading. The Semiconductor Industry Association said that worldwide sales of semiconductors were $25.1 billion in November 2011, a decrease of 2.4 percent from September. Sales were 0.8 percent higher compared with November 2010.

Melco Crown Entertainment Ltd. (MPEL) stock rose 4.78 percent to $10.08 in pre-market trading.

Research In Motion Ltd. (RIMM) stock rose 1.66 percent to $14.74 in pre-market trading. According to AllThingsD, RIM slashed all PlayBook tablet prices to $299 from now until Feb. 4 or whenever inventory runs out.

Apple Inc. (AAPL) stock moved up 0.88 percent to $408.55 in pre-market trading. Brokerage firm Ticonderoga Securities said Apple was the best performer in its universe of twenty companies, rising by 26 percent, according to CNN.

Losers

Zions Bancorp. (ZIONW) stock declined 2.33 percent to $2.93 in pre-market trading.

Key Technology Inc. (KTEC) stock moved down 0.84 percent to $12.94 in pre-market trading.