Shares of Wind River Systems ( WIND) were among technology's losers Thursday, sinking 22% after the software company posted weaker-than-expected fourth-quarter results and offered first-quarter guidance that was well below Wall Street's forecasts.

The company earned $10.3 million, or 11 cents a share, in the fourth quarter, with revenue of $70.2 million. Analysts surveyed by Thomson First Call expected earnings of 12 cents a share and revenue of $74.2 million. Last year, the company posted adjusted earnings of $6.1 million, or 7 cents a share, on revenue of $63.2 million.

For the first quarter, Wind River expects earnings of 3 cents to 4 cents a share excluding stock-based compensation costs. The company predicts sales of $65 million to $67 million. Analysts project earnings of 8 cents a share and sales of $71.5 million. Shares were trading down $3.36 to $12.

Analogic ( ALOG) climbed 16% after the maker of health- and security-imaging equipment reported second-quarter results that were better than expected. The company posted earnings from continuing operations of $9.1 million, or 66 cents a share, on sales of $100 million. Analysts expected earnings of 29 cents a share and sales of $89.5 million. During the year-earlier period, the company recorded a loss of $2 million, or 15 cents a share, on sales of $76.1 million. Shares were trading up $7.76 to $61.87.

Shares of Sirenza Microdevices ( SMDI) jumped 12% after the supplier of radio-frequency components lifted its first-quarter guidance. The company now sees earnings, before items, of 7 cents to 9 cents a share, up from an earlier view of 5 cents to 7 cents a share. The company predicts sales of $20 million to $21 million, up from its previous view of $17.5 million to $19 million. Analysts project earnings of 6 cents a share and sales of $18.5 million. "We have seen significant strength across our diversified end markets, and we are experiencing broad-based customer demand for a wide range of our high performance RF components," the company said. Shares were up 92 cents to $8.36.

Diodes ( DIOD) also increased its first-quarter forecast, sending its shares up 5%. The maker of semiconductor components now expects its gross profit dollars to grow by 10% to 12% on a sequential basis, up from an earlier view of 8% to 11%. "An increase in gross profit margin from analog products was the primary contributor to the gross profit update," the company said. Diodes said it now sees sales growth of 18% to 20% on a sequential basis, up from a previous estimate of 16% to 20%. The new guidance implies first-quarter sales of $72.5 million to $73.7 million. Analysts project sales of $72.4 million. Shares recently changed hands at $37.23, up $1.83.

Shares of Intuit ( INTU) rose 7% after the software company raised its third-quarter earnings and sales forecasts. The company now sees adjusted earnings, which exclude one-time items, of $1.64 to $1.68 a share, or earnings growth of 6% to 9%. The company now predicts sales growth of 5% to 8%, or sales of $880 million to $900 million. Previously, the company forecast 5% to 8% earnings growth and sales growth of 3% to 5%. "With two more weeks of strong TurboTax sales -- especially TurboTax Online -- the tax season is turning out better than we expected," the company said. Shares were up $3.22 to $51.73.

Other technology movers included JDSU ( JDSU), up 13 cents to $3.88; Sun Microsystems ( SUNW), up 23 cents to $4.58; Sirius Satellite Radio ( SIRI), up 18 cents to $4.95; Oracle ( ORCL), unchanged at $12.86; Intel ( INTC), up 3 cents to $20.04; Lucent Technologies ( LU), down 4 cents to $2.84; Microsoft ( MSFT), up 1 cent to $27.26; Cisco Systems ( CSCO), down 21 cents to $20.65; Lexar Media ( LEXR), up 11 cents to $8.94; Apple Computer ( AAPL), down 49 cents to $65.17; and Applied Materials ( AMAT), up 15 cents to $18.03.