The top after-market NASDAQ stock market gainers are: Keynote Systems, Tekelec, LogMeIn, Internet Capital Group, and East West Bancorp. The top after-market NASDAQ stock market losers are: MIPS Technologies, Signature Bank, RF Micro Devices, Hutchinson Technology, and Exar.

Gainers

Keynote Systems Inc. (KEYN) stock advanced 22.03 percent to $18.28 in the after-market trading, following its higher-than-expected first quarter earnings and revenue. Adjusted profit was $5.1 million or 32 cents a share, up from $2.5 million or 17 cents a share last year. Revenue rose to $24.8 million from $20.7 million. Analysts had expected profit of 17 cents a share on revenue of $21.97 million.

Keynote expects second quarter adjusted earnings of 18 cents to 24 cents a share and revenue of $23 million to $24 million. Street analysts project profit of 16 cents a share on revenue of $21.13 million. The company's board approved a quarterly cash dividend of 6 cents a share, payable March 15 to common shareholders of record March 1.

Shares of Tekelec (TKLC) soared 7.76 percent to $12.64 in the after-hours trading.

LogMeIn, Inc. (LOGM) stock gained 6.61 percent to $41.58 in the after-market session.

Shares of Internet Capital Group Inc. (ICGE) increased 6.47 percent to $12.17 in the after-hours session.

East West Bancorp, Inc. (EWBC) stock rose 3.55 percent to $21.28 in the after-market trading, following its higher-than-expected first quarter earnings guidance. Fourth quarter profit was $32.2 million or 22 cents a share, down from $253.6 million or $1.96 a share last year. Adjusted earnings was 35 cents a share for the latest quarter. Net interest income rose to $216.73 million from $81.87 million. Non-interest loss was $17.3 million, compared to income of $415.24 million. Analysts had expected profit of 29 cents a share on revenue of $185.48 million.

East West Bancorp expects first quarter earnings of 33 cents to 35 cents a share, higher than analysts forecast of 31 cents a share. The company anticipates full year 2011 earnings of $1.44 to $1.48 a share, higher than analysts forecast of $1.38 a share. The company declared first quarter common stock cash dividend of 1 cent a share, payable on or about Feb. 24 to shareholders of record Feb. 10.

Losers

Shares of MIPS Technologies Inc. (MIPS) lost 9.25 percent to $13.73 in the after-hours trading, following its lower-than-expected second quarter revenue. Adjusted profit was $7.5 million or 14 cents a share, up from $4.1 million or 9 cents a share last year. Revenue rose 44 percent to $21.86 million. Analysts had expected profit of 12 cents a share on revenue of $22.12 million.

Signature Bank (SBNY) stock fell 7.09 percent to $49.96 in the after-market trading. Fourth quarter earnings were $30.3 million or 72 cents a share, up from $20.9 million or 51 cents a share last year. Net interest income grew 26.6 percent to $95.9 million, while non-interest income rose to $10.01 million from $9.61 million. Analysts had expected profit of 63 cents a share on revenue of $101.20 million.

Shares of RF Micro Devices Inc. (RFMD) slid 6.92 percent to $7.13 in the after-hours session, following its lower-than-expected third quarter revenue and fourth quarter revenue outlook. Adjusted profit for third quarter was $52.6 million or 19 cents a share, up from $38.8 million or 14 cents a share last year. Revenue rose 11.4 percent to $278.79 million. Analysts had expected profit of 18 cents a share on revenue of $285.80 million.

RF Micro Devices expects fourth quarter revenue to seasonally decline about 10 percent to 15 percent sequentially, implying revenues of $237 million to $251 million, based on third quarter revenue of $278.79 million. Street analysts predict revenue of $259.29 million.

Hutchinson Technology Inc. (HTCH) stock declined 6.54 percent to $3 in the after-market session, following a wider-than-expected first quarter loss. Loss was $16.9 million or 73 cents a share, compared to profit of $2.2 million or 9 cents a share last year. Sales fell to $68.2 million from $108.3 million. Analysts had expected a loss of 67 cents a share on revenue of $70.07 million.

Shares of Exar Corp. (EXAR) decreased 6.49 percent to $6.20 in the after-hours trading, following its wider-than-expected third quarter loss. Adjusted loss was $1.9 million or 4 cents a share, compared to profit of $0.1 million or breakeven a share last year. Sales rose to $35.4 million from $34.0 million. Analysts had expected a loss of 3 cents a share on revenue of $37.05 million. The company expects fourth quarter sales of $33 million to $35 million, lower than analysts forecast of $38.23 million.