The top pre-market NASDAQ Stock Market gainers are: Gulf Resources, Sino Clean Energy, Photronics, A123 Systems, and Vodafone Group. The top pre-market NASDAQ Stock Market losers are: Clean Energy Fuels, Cree, Dell, Intel, and L & L Energy.

Gainers

Gulf Resources, Inc. (GFRE) stock jumped 21.12 percent to $3.67 in the pre-market trading. Profit for the first quarter was $16.39 million or $0.40 per share, up from $7.97 million or $0.23 per share last year. Revenue grew to $45.38 million from $29.69 million, on strong performance of the company's bromine and crude salt segments.

Moving forward in 2011, Gulf Resources said it is focused on maximizing sales in light of the higher bromine prices, while gradually ramping up additional bromine and crude salt production capacity. With the added capacity from the wastewater treatment chemical additive production line, the company also expects a higher contribution to growth from its chemical product segment. The company reaffirmed its 2011 revenue guidance of $195 million to $198 million and earnings outlook of $64 million to $66 million.

Sino Clean Energy Inc (SCEI) stock climbed 20 percent to $2.88 in the pre-market trading. The company filed form 10-Q with the U.S. Securities and Exchange Commission and anticipates releasing its first quarter summary financial results on May 17 before the market open. In the regulatory filing, the company's earnings for the first quarter were $12.08 million, down from $20.46 million last year, due to the gain on extinguishment of derivative liability of $28.40 million in the last year. Adjusted earnings rose to $8.07 million from $6.76 million. Revenue grew to $33.78 million from $24.51 million.

Photronics Inc. (PLAB) stock advanced 11.13 percent to $8.89 in the pre-market trading. Loss for the second quarter was $16.4 million or $0.30 per share, compared to a profit of $7.9 million or $0.14 per share last year. Adjusted earnings were $14.8 million or $0.24 per share. Sales grew to $133.1 million from $105.1 million. Analysts had expected profit of $0.16 per share on revenue of $119.66 million. The company intends to make continued investments to gain further high-end market share, encouraged by its prospects for continued growth in 2011.

A123 Systems, Inc. (AONE) stock grew 4.23 percent to $5.92 in the pre-market trading. In a regulatory filing, the company said its board of directors has appointed David Prystash to serve as its chief financial officer, principal financial officer and principal accounting officer, effective May 12. Prystash succeeds John Granara in these positions.

Vodafone Group plc (VOD) stock increased 1.99 percent to $27.72 in the pre-market trading. Profit for fiscal 2011 slipped to 7.97 billion pounds or 15.11 pence per share from 8.64 billion pounds or 16.36 pence per share a year ago. The latest year results included impairment charges of 6.15 billion pounds, higher than prior year's 2.10 billion pounds. The impact was partially offset by a 3.02 billion pounds gain on disposal of the 3.2 percent interest in China Mobile Ltd., as well as the settlement of a tax case.

Adjusted profit rose 3.6 percent to 8.78 billion pounds and adjusted earnings per share increased 4 percent to 16.75 pence. On a pre-tax basis, profit increased 9.5 percent to 9.50 billion pounds, and adjusted profit before tax grew 4.2 percent to 11 billion pounds. Revenue increased 3.2 percent to 45.88 billion pounds, on strong performances in key revenue growth areas of data, emerging markets and enterprise.

Further, Vodafone said its board recommended a final dividend of 6.05 pence per share, representing a 7.1 percent increase from last year. Total dividends for the year would be 8.90 pence per share, up 7.1 percent from last year. The company continues to expect that total dividends per share will be no less than 10.18 pence for the 2013 financial year.

Looking ahead into the fiscal 2012, Vodafone expects adjusted operating profit to be in the range of 11 billion to 11.8 billion pounds, reflecting the loss of 0.5 billion pounds share of profits from the stake sale in SFR as the result of the disposal of 44 percent interest to Vivendi SA. Further regulated cuts to mobile termination rates would have a negative impact of about 2.5 percentage points on service revenue growth in 2012.

Losers

Clean Energy Fuels Corp. (CLNE) stock fell 2.24 percent to $13.56 in the pre-market trading.

Cree Inc. (CREE) stock slid 1.91 percent to $40.60 in the pre-market trading.

Dell Inc. (DELL) stock tumbled 1.25 percent to $15.80 in the pre-market trading, ahead of its first-quarter earnings results. Street analysts predict Dell to earn $0.43 per share compared to $0.30 per share in last year, with revenues estimated at $15.4 billion. Hewlett-Packard Co. (HPQ) lowered its full year guidance due to the impact of Japan's earthquake and weak sales of consumer PCs. HP released its results a day before it originally planned after an internal memo from Chief Executive Leo Apotheker warned his executives of another tough quarter ahead.

Intel Corp. (INTC) stock slid 1.06 percent to $23.39 in the pre-market trading.

L & L Energy, Inc. (LLEN) stock moved down 0.99 percent to $7 in the pre-market trading.

Emerging markets Earthquake China Dell