The top after-market NASDAQ stock market gainers are: Select Comfort, Whole Foods Market, 1-800-Flowers.com, SuccessFactors, and LeCroy. The top after-market NASDAQ stock market losers are: Idenix Pharmaceuticals, Pacer International, TriQuint Semiconductor, Amkor Technology, and Akamai Technologies.

Gainers

Select Comfort Corp. (SCSS) stock jumped 11.06 percent to $11.65 in the after-market trading, as it guided fiscal 2011 earnings above Street view. The company expects to increase earnings in 2011 by 20 percent to $30 percent to range of 68 cents to 74 cents a share, while Street predicts 65 cents a share. The company’s long-term expectation is for earnings per share growth of between 15 percent and 20 percent per year. The company anticipates 2011 capital expenditures to be about $25 million to $30 million.

Select Comfort reported fourth quarter earnings of $7.1 million or 13 cents a share, compared to $35.3 million or 69 cents a share last year. Sales rose 9 percent to $148.7 million, on same-store growth of 12 percent.

Shares of Whole Foods Market, Inc. (WFMI) climbed 9.25 percent to $58.72 in the after-hours trading, as it raised fiscal 2011 earnings guidance above Street view. The company increased its fiscal 2011 earnings outlook to range of $1.76 to $1.80 a share from previous forecast of $1.66 to $1.71 a share. The company also raised its 2011 sales growth outlook to range of 10.7 percent to 12.8 percent from previous range of 10 percent to 12 percent. Street expects earnings of $1.71 a share on revenue of $9.99 billion with sales growth of 10.90 percent.

Whole Foods posted first quarter earnings of $88.7 million or 51 cents a share, up from $49.7 million or 32 cents a share last year. Sales rose 14 percent to $3.0 billion. Analysts had expected profit of 45 cents a share on revenue of $2.98 billion. Comparable and identical store sales increased 9.1 percent, or 12.6 percent and 11.6 percent on a two-year stacked basis, respectively.

1-800-Flowers.com Inc. (FLWS) stock advanced 7.91 percent to $3 in the after-market session.

Shares of SuccessFactors, Inc. (SFSF) gained 6.31 percent to $32 in the after-hours session, as its fourth quarter earnings came in line with Street estimates, while revenues were ahead of expectations. Adjusted earnings were $0.26 million or breakeven a share, down from $0.33 million or 1 cent a share last year. Revenue rose to $60.1 million from $42.2 million, while adjusted revenue grew to $61.7 million from $42.2 million. Analysts had expected breakeven a share on revenue of $56.0 million.

SuccessFactors expects first quarter adjusted earnings to be breakeven a share and adjusted revenue of $62.5 million to $63.5 million, while Street predicts profit of 1 cent a share on revenue of $58.78 million. The company projects full year 2011 adjusted earnings to be breakeven a share and adjusted revenue of $265 million to $270 million, while Street predicts profit of 10 cents a share on revenue of $254.5 million.

LeCroy Corp. (LCRY) stock increased 4.36 percent to $15.07 in the after-market trading.

Losers

Shares of Idenix Pharmaceuticals Inc. (IDIX) plunged 24.69 percent to $3.02 in the after-hours trading. The company said it has discontinued the development of IDX320, an HCV protease inhibitor, based on Idenix's conclusion that the observed toxicity in the drug-drug interaction study was likely caused by IDX320.

The U.S. Food and Drug Administration (FDA) has verbally informed Idenix that the full clinical hold for IDX184 has been removed. The program has been placed on partial clinical hold, and Idenix anticipates initiating a Phase IIb12-week trial of IDX184 in combination with pegylated interferon and ribavirin in the second half of 2011.

Idenix was informed by ViiV Healthcare Co., an affiliate of GlaxoSmithKline (GSK), that '761, a non-nucleoside reverse transcriptase inhibitor drug candidate for the treatment of HIV/AIDS licensed by Idenix to GSK, was placed on clinical hold by the FDA. ViiV has full responsibility for the development of '761, including any regulatory interactions.

Pacer International Inc. (PACR) stock plummeted 15.67 percent to $5.81 in the after-market trading, as its fourth quarter earnings and revenue missed Street view. Adjusted profit was $1.8 million or 5 cents a share, up from $0.4 million or 1 cent a share last year. Revenue declined to $373.3 million from $420.2 million. Analysts had expected profit of 9 cents a share on revenue of $382.2 million.

Pacer anticipates fiscal 2011 earnings of 25 cents to 30 cents a share and revenue growth of 6 percent to 8 percent over 2010, while Street predicts profit of 34 cents a share on revenue of $1.56 billion with revenue growth of 6.90 percent.

Shares of TriQuint Semiconductor, Inc. (TQNT) dropped 12.22 percent to $11.99 in the after-hours session, as it guided first quarter guidance below Street view. The company projects first quarter earnings of 14 cents to 16 cents a share and revenue of $215 million to $225 million, while Street predicts profit of 19 cents a share on revenue of $227.24 million.

For fiscal 2011, the company anticipates the continued robust growth in demand to lead to a revenue growth of about 20 percent, implying annual revenues of $1.05 billion, while analysts project $1.02 billion. TriQuint posted fourth quarter adjusted earnings of $42.8 million or 25 cents a share, up from $22.8 million or 14 cents a share last year. Revenue grew 31 percent to $253.39 million. Analysts had expected profit of 28 cents a share on revenue of $250.73 million.

Amkor Technology, Inc. (AMKR) stock tumbled 12.21 percent to $7.19 in the after-market session, as it guided first quarter guidance below Street view. The company anticipates first quarter earnings of 5 cents to 14 cents a share and revenue of $660 million to $690 million, while Street predicts profit of 22 cents a share on revenue of $701.29 million.

Amkor reported fourth quarter earnings of $50.6 million or 20 cents a share, down from $88 million or 33 cents a share last year. Adjusted earnings were 26 cents a share. Sales rose 12 percent to $750.61 million. Analysts had expected profit of 26 cents a share on revenue of $735.85 million.

Shares of Akamai Technologies Inc. (AKAM) lost 11.06 percent to $42.68 in the after-hours trading, as it guided first quarter guidance below Street view. The company guided first quarter normalized earnings of 35 cents to 37 cents a share and revenue of $265 million to $275 million, while Street predicts profit of 38 cents a share on revenue of $283.68 million.

Akamai posted fourth quarter normalized earnings of $76.5 million or 40 cents a share, up from $62.9 million or 34 cents a share last year. Revenue rose 19 percent to $284.67 million. Analysts had expected profit of 38 cents a share on revenue of $283.08 million.

NASDAQ Stock Market Glaxosmithkline Aids Glaxosmithkline