The top after-market NASDAQ Stock Market gainers are: Immersion, Sapient, Novatel Wireless, Orthovita, Marchex, Limelight Networks, Rubicon Technology, Mercer International, Hansen Natural, and XOMA.

Immersion Corp. (IMMR) stock jumped 14.06 percent to $8.11 in the after-market trading. Earnings from continuing operations for the first quarter were $1.35 million or $0.05 per share, compared to a loss of $2.69 million or $0.10 per share last year. Revenue rose to $9.77 million from $9.71 million. Analysts had expected a loss of $0.02 per share on revenue of $7.55 million. For the fiscal 2011, the company reiterated its revenue guidance of $31 million to $33 million and expects to generate earnings, while Street predicts a loss of $0.02 per share on revenue of $32.12 million.

Sapient Corp. (SAPE) stock climbed 7.77 percent to $12.90 in the after-market trading. Profit for the first quarter was $12.16 million or $0.09 per share, up from $6.24 million or $0.05 per share last year. Adjusted profit was $17.0 million or $0.12 per share, compared to $10.1 million or $0.07 per share last year. Gross revenues grew to $249.89 million from $191.72 million. Analysts had expected profit of $0.07 per share on revenue of $231.08 million.

Novatel Wireless Inc. (NVTL) stock soared 7.27 percent to $5.90 in the after-market trading. The company expects second quarter adjusted results between loss $0.10 and breakeven per share, and revenue of $112 million to $122 million, while Street predicts a loss of $0.11 per share on revenue of $96.10 million.

Novatel reported first quarter adjusted loss of $17.8 million or $0.56 per share, compared to a loss of $2.3 million or $0.07 per share last year. Revenue fell to $61.8 million from $72.2 million. Analysts had expected a loss of $0.47 per share on revenue of $70.65 million.

Orthovita Inc. (VITA) stock surged 7.00 percent to $2.60 in the after-market trading.

Marchex, Inc. (MCHX) stock grew 6.26 percent to $7.30 in the after-market trading. Adjusted profit for the first quarter was $2.06 million or $0.06 per share, up from $1.31 million or $0.04 per share last year. Revenue grew to $29.08 million from $24.0 million. Analysts had expected profit of $0.04 per share on revenue of $28.79 million. Marchex expects second quarter revenue of $35 million to $36 million, while Street predicts $34.44 million. For the fiscal 2011, the company expects revenue of $137 million to $141 million, while Street predicts $135.59 million.

Limelight Networks, Inc. (LLNW) stock gained 5.96 percent to $6.76 in the after-market trading. The company expects second quarter revenue of $51.8 million to $53.2 million, while Street predicts $51.23 million. The company's first quarter loss widened to $9.8 million or $0.09 per share from $5.8 million or $0.07 per share last year. Adjusted loss for the latest quarter were $3.6 million or $0.03 per share. Revenue grew 38 percent to $49.82 million. Analysts had expected a loss of $0.05 per share on revenue of $49.35 million for the first quarter.

Rubicon Technology, Inc. (RBCN) stock increased 5.78 percent to $29.30 in the after-market trading. The company expects second quarter earnings of $0.82 to $0.86 per share and revenue of $40 million to $43 million, while Street predicts profit of $0.68 per share on revenue of $41.09 million. The company reported first quarter earnings of $19.10 million or $0.80 per share, up from $1.58 million or $0.07 per share last year. Revenue grew to $37.97 million from $11.52 million. Analysts had expected profit of $0.66 per share on revenue of $35.97 million for the first quarter.

Mercer International Inc. (MERC) stock gained 5.31 percent to $12.49 in the after-market trading. Profit for the first quarter was 29.05 million euros or 0.52 euro per share, compared to a loss of 7.55 million euros or 0.21 euro per share last year. Revenue rose to 224.14 million euros from 180.25 million euros. Analysts had expected earnings of 0.37 euro per share on revenue of 220 million euros.

Mercer, which produces market northern bleached softwood kraft (NBSK), the paper industry's benchmark for pulp, said NBSK list prices rose by $30 per ADMT (air dried metric ton) in Europe and North America, and in China, prices rose by $50 per ADMT, in the quarter .Pulp production increased to 358,557 ADMTs from 329,455 ADMTs, while pulp sales volume rose to 348,995 ADMTs from 332,869 ADMTs last year. Average pulp sales realizations increased by about 17 percent to 593 euros per ADMT.

Hansen Natural Corp. (HANS) stock increased 4.96 percent to $65.01 in the after-market trading. Profit for the first quarter was $55.0 million or $0.59 per share, up from $32.6 million or $0.35 per share last year. Sales grew 49.7 percent to $356.4 million. Analysts had expected profit of $0.49 per share on revenue of $324.54 million.

XOMA Ltd. (XOMA) stock rose 3.78 percent to $3.02 in the after-market trading. Loss for the first quarter narrowed to $6.34 million or $0.22 per share from $21.79 million or $1.36 per share last year. Revenue rose to $15.6 million from $7.2 million. Analysts had expected a loss of $0.45 per share on revenue of $12.35 million.

XOMA said it will not be providing specific guidance on overall revenues or cash receipts for 2011 so as to best manage its ongoing business development discussions and other activities. The company currently expects that cash used in operating activities in 2011 may range from $30 million to cash neutral.