The top after-market NASDAQ Stock Market losers are: GSI Technology, iGo, TTM Technologies, EMCORE, Powerwave Technologies, Brightpoint, Allscripts Healthcare Solutions, Tesco, Vitesse Semiconductor, and The Knot.

GSI Technology Inc. (GSIT) stock plunged 18.97 percent to $6.75 in the after-market trading. Profit for the fourth quarter was $3.41 million or $0.11 per share, down from $3.81 million or $0.14 per share last year. Revenue rose to $21.85 million from $21.24 million. Analysts had expected profit of $0.14 per share on revenue of $23.83 million. For the first quarter, the company expects revenue of $22 million to $23 million, while Street predicts $25.30 million. The company also expects gross margin of about 45 percent for the first quarter.

iGo, Inc. (IGOI) stock plummeted 13.48 percent to $2.31 in the after-market trading. Loss for the first quarter was $1.64 million or $0.05 per share, compared to a profit of $769,000 or $0.02 per share last year. Results for the last year quarter were positively impacted by the recognition of a $1.7 million gain related to the reversal of a valuation allowance on a note receivable that was subsequently paid in full. Revenue rose to $9.23 million from $8.17 million.

We believe several positive trends will enable us to generate strong year-over revenue growth in 2011, while improving our level of profitability, particularly in the seasonally stronger third and fourth quarters of the year, said Michael Heil, President and Chief Executive Officer of iGo.

TTM Technologies Inc. (TTMI) stock fell 7.29 percent to $16.40 in the after-market trading. Adjusted profit was $33.3 million or $0.40 per share, up from $9.2 million or $0.21 per share last year. Sales grew to $342.8 million from $138.2 million. Analysts had expected profit of $0.39 per share on revenue of $350.53 million. For the second quarter, the company expects earnings of $0.28 to $0.37 per share, adjusted earnings of $0.36 to $0.45 per share and revenue of $350 million to $370 million, while Street predicts profit of $0.42 per share on revenue of $365.13 million.

EMCORE Corp. (EMKR) stock tumbled 7.26 percent to $2.30 in the after-market trading. Loss for the second quarter widened to $5.21 million or $0.06 per share from $1.46 million or $0.02 per share last year. Revenue declined to $47.22 million from $48.19 million. For the third quarter, the company expects revenue of $48 million to $50 million.

Separately, EMCORE said it has entered into a long-term supply agreement with Space Systems/Loral (SS/L) to manufacture and deliver high-efficiency, multi-junction solar cells for Space Systems/Loral's commercial satellite programs. The multi-year contract represents the second largest award in EMCORE's history. The agreement is subject to certain terms and conditions, including a provision allowing SS/L to terminate the agreement for convenience. Production of the solar cells will take place at EMCORE's state-of-art manufacturing facilities located in Albuquerque, New Mexico.

Powerwave Technologies Inc. (PWAV) stock slid 6.74 percent to $4.01 in the after-market trading. Loss for the first quarter narrowed to $7.0 million or $0.04 per share from $10.8 million or $0.08 per share last year. Sales rose to $136.6 million from $114.5 million. Analysts had expected profit of $0.03 per share on revenue of $151.87 million.

Brightpoint Inc. (CELL) stock fell 4.89 percent to $8.56 in the after-market trading. The company said its subsidiary Brightpoint Slovakia s.r.o. and Research In Motion Ltd. (RIMM) have entered into a distribution agreement to expand the availability of BlackBerry products in Central Eastern Europe (CEE). Leveraging its global operations in CEE, Brightpoint Slovakia will begin distributing BlackBerry smartphones, software and accessories to customers located in Albania, Bulgaria, Croatia, the Czech Republic, Hungary, Romania, Serbia, the Slovak Republic, Slovenia, Macedonia, and Poland. BlackBerry smartphones will be available from various network operators and retail outlets throughout the CEE region.

Allscripts Healthcare Solutions, Inc. (MDRX) stock declined 4.27 percent to $20.40 in the after-market trading. Profit for the first quarter was $12.6 million or $0.06 per share, down from $18.6 million or $0.12 per share last year. Adjusted earnings were $40.6 million or $0.21 per share, up from $36.2 million or $0.19 per share last year. Revenue rose to $335.3 million from $184.4 million, while adjusted revenue grew 10.5 percent to $346.1 million. Analysts had expected earnings of $0.20 per share on revenue of $342.04 million.

For fiscal 2011, Allscripts still expects adjusted earnings of $0.86 to $0.90 per share, and adjusted revenue of $1.425 billion to $1.450 billion, while Street predicts profit of $0.90 per share on revenue of $1.44 billion. Further, the company said its board has approved a stock repurchase program, under which it may purchase up to $200 million of its common stock over the next three years.

Tesco Corp. (TESO) stock decreased 4.25 percent to $16.01 in the after-market trading. Profit for the first quarter was $5 million or $0.13 per share, up from $2.2 million or $0.06 per share last year. Revenue grew to $105.6 million from $86 million. Analysts had expected earnings of $0.16 per share on revenue of $118.2 million.

We continue to believe that we are well positioned to take advantage of an improving market in 2011. We project our total capital expenditures for 2011 to be between $55 million and $65 million, based on current market conditions, said Julio Quintana, Chief Executive Officer of Tesco.

Vitesse Semiconductor Corp. (VTSS) stock declined 4.15 percent to $4.85 in the after-market trading. The company said Richard Yonker, the company's chief financial officer, plans to retire from the company. Yonker joined Vitesse in 2006 as senior vice president and chief financial officer. Yonker will remain as chief financial officer until his successor is appointed and an orderly transition is completed. Vitesse has initiated a search to fill this position.

Separately, Vitesse reported second quarter loss of $9.04 million or $0.37 per share, compared to a loss of $34.06 million or $1.69 per share last year. Adjusted loss narrowed to $2.21 million or $0.09 per share from $3.03 million or $0.15 per share last year. Revenue fell to $36.89 million from $43.91 million. Analysts had expected a loss of $0.09 per share on revenue of $37.40 million. For the third quarter, the company expects revenue of $35 million to $37.5 million, while Street predicts $39.34 million. The company expects third quarter product margins of 57 percent to 59 percent, and operating expenses of $23.0 million to $24.0 million.

The company’s long-term operating model, which assumes a quarterly revenue run rate of $50.0 million or more, is stated as a percentage of product revenue, targets gross margin of 55 percent to 60 percent; R&D expense of 25 percent to 28 percent; SG&A expense of 14 percent to 17 percent; income from operations of 12 percent to 18 percent; and EBITDA of 15 percent to 21 percent.

The Knot, Inc. (KNOT) stock decreased 3.87 percent to $9.70 in the after-market trading. Loss for the first quarter widened to $705,000 or $0.02 per share from $111,000 or breakeven per share last year. Revenue rose to $27.544 million from $27.503 million. Analysts had expected profit of $0.02 per share on revenue of $28.16 million.