The top pre-market NASDAQ Stock Market gainers are: SunPower, SodaStream International, Yahoo, Netflix, and LM Ericsson Telephone. The top pre-market NASDAQ Stock Market losers are: Human Genome Sciences, Savient Pharmaceuticals, ATP Oil & Gas, Century Aluminum, and JDS Uniphase.

Gainers

SunPower Corp. (SPWRB) stock gained 4.29 percent to $6.7893 in the pre-market trading.

SodaStream International Ltd. (SODA) stock rose 1.30 percent to $29.50 in the pre-market trading. Deutsche Bank upgraded its rating on shares of SodaStream to buy from hold, while lowering its price target to $40 from $50.

Yahoo Inc. (YHOO) stock increased 2.73 percent to $13.90 in the pre-market trading. The private-equity firm Silver Lake, Alibaba Group Holding Ltd. and Russia’s Digital Sky Technologies are discussing a possible joint bid for Yahoo, the Bloomberg reported citing people familiar with the matter. The group contacted Yahoo and its advisers in recent weeks to inform them of a possible offer. The discussions are still at an early stage and it’s not certain that the group will agree to make a bid.

Netflix, Inc. (NFLX) stock moved up 0.33 percent to $113.62 in the pre-market trading.

LM Ericsson Telephone Co. (ERIC) stock moved up 0.11 percent to $8.98 in the pre-market trading. Citigroup upgraded its rating on shares of Ericsson to buy from hold.

Losers

Human Genome Sciences Inc. (HGSI) stock fell 6.06 percent to $11 in the pre-market trading.

Savient Pharmaceuticals, Inc. (SVNT) stock tumbled 5.65 percent to $3.51 in the pre-market trading.

ATP Oil & Gas Corp. (ATPG) stock slid 5.26 percent to $6.30 in the pre-market trading.

Century Aluminum Co. (CENX) stock declined 5.06 percent to $7.50 in the pre-market trading. The company provided an update on the status of its previously announced $60 million stock repurchase program. Century said it repurchased about 3.625 million shares of its common stock from Aug. 11 through Sept. 30 at an aggregate purchase price of about $38.7 million. Century said it had about $21.3 million remaining under its repurchase program authorization as of Oct. 1 and will continue to consider share repurchases under the program based on management's evaluation of market conditions, the trading price of the stock and other factors.

JDS Uniphase Corp. (JDSU) stock decreased 3.89 percent to $8.64 in the pre-market trading.