The top pre-market NASDAQ Stock Market gainers are: BroadSoft, Qiagen, and Randgold Resources. The top pre-market NASDAQ Stock Market losers are: Hercules Offshore, ZAGG, Rambus, Caribou Coffee Company, Ariad Pharmaceuticals, and Central European Media Enterprises.

Gainers

BroadSoft, Inc. (BSFT) stock jumped 21.10 percent to $28.70 in the pre-market trading. The company expects third quarter adjusted earnings of $0.20 to $0.23 per share and revenue of $31 million to $33 million, while Street predicts profit of $0.14 per share on revenue of $29.81 million. For the fiscal 2011, the company raised its adjusted earnings guidance to range of $0.90 to $0.95 per share from previous forecast of $0.67 to $0.77 per share. The company also increased its revenue outlook to range of $127 million to $130 million from previous range of $121 million to $125 million. Street analysts predict profit of $0.75 per share on revenue of $125.21 million.

The company reported second quarter earnings of $15.8 million or $0.57 per share, compared to a loss of $1.8 million or $0.20 per share last year. Adjusted earnings were $8.19 million or $0.31 per share, compared to a loss of $519,000 or $0.03 per share last year. Revenue rose to $32.18 million from $19.77 million. Analysts had expected profit of $0.12 per share on revenue of $28.86 million.

Qiagen NV (QGEN) stock rose 3.11 percent to $16.27 in the pre-market trading.

Randgold Resources Ltd. (GOLD) stock rose 1.68 percent to $96.07 in the pre-market trading.

Losers

Hercules Offshore, Inc. (HERO) stock fell 10.96 percent to $3.25 in the pre-market trading.

ZAGG Inc. (ZAGG) stock tumbled 9.57 percent to $12.10 in the pre-market trading.

Rambus Inc. (RMBS) stock slid 9.33 percent to $10.50 in the pre-market trading.

Caribou Coffee Company, Inc. (CBOU) stock slid 9.17 percent to $14.06 in the pre-market trading.

Ariad Pharmaceuticals Inc. (ARIA) stock declined 9.08 percent to $7.81 in the pre-market trading.

Central European Media Enterprises Ltd. (CETV) stock decreased 9.02 percent to $13.31 in the pre-market trading.