Shares of Trimble Navigation ( TRMB - Get Report) were among technology's losers Wednesday, falling 17% after the company posted mixed second-quarter results and issued third-quarter guidance that disappointed investors.

The global positioning technology company earned $23.8 million, or 42 cents a share, on sales of $204.2 million. Pro forma earnings came in at $24.9 million, or 44 cents a share. Analysts surveyed by Thomson First Call were expecting earnings of 39 cents a share on sales of $209.2 million. A year ago the company posted pro forma earnings of $17.3 million, or 32 cents a share, on sales of $179.5 million. Trimble blamed the sales shortfall on lower-than-expected sales of its EZ-Steer product, which suffered from the end of agricultural buying season.

Looking ahead, Trimble Navigation forecast third-quarter earnings of 29 cents to 31 cents a share on sales of $187 million to $192 million. Included in earnings guidance is a $1 million write-off and $1 million for amortization of purchased intangibles. Analysts had been expecting earnings of 34 cents a share on sales of $198.7 million. Shares were trading down $7.27 to $36.33.

Garmin ( GRMN - Get Report) rose 5% after the maker of navigation products posted second-quarter results that surpassed expectations. The company earned $74.2 million, or 68 cents a share, on sales of $264.5 million. Excluding foreign currency translation, the company would have earned 69 cents a share. Analysts were expecting earnings of 58 cents a share on sales of $230.6 million. A year ago the company earned $56.3 million, or 52 cents a share, on sales of $189.7 million. Excluding the impact of foreign currency, the company earned 49 cents a share a year ago. Looking ahead, Garmin now expects 2005 earnings of $2.43 to $2.48 a share on sales of $950 million to $975 million. Previously, the company expected earnings of $2.30 to $2.38 a share on sales of $890 million to $915 million. Analysts had been expecting earnings of $2.38 a share on sales of $917.6 million. Shares were trading up $2.57 to $55.13.

Shares of Zebra Technologies ( ZBRA - Get Report) fell 16% after the company reported second-quarter earnings that were below expectations and warned that third-quarter results would fall below forecasts. The company earned $26.8 million, or 37 cents a share, on sales of $176.6 million. Analysts were expecting earnings of 45 cents a share on sales of $181.5 million. "These financial results did not meet expectations and reflect weakness in sales to retail accounts in our two largest territories, a business slowdown in part of Europe and higher operating expenses," the company said.

A year ago the company earned $29.4 million, or 41 cents a share, on sales of $162.8 million. Looking ahead, Zebra forecast third-quarter earnings of 35 cents to 39 cents a share on sales of $170 million to $180 million. Analysts had been expecting earnings of 48 cents a share on sales of $190.6 million. Shares were recently trading down $7.56 to $39.83.

InfoSpace ( INSP fell 31% after the company posted mixed second-quarter results and warned that third-quarter results would fall well short of expectations. The maker of online search and entertainment products earned $16.3 million, or 44 cents a share, on sales of $83.2 million. Analysts were expecting earnings of 38 cents a share on sales of $85.4 million. A year ago the company earned $13.5 million, or 37 cents a share, on sales of $54.4 million.

Looking ahead, InfoSpace forecast third-quarter earnings of $5.5 million to $7.5 million, or 15 cents to 20 cents a share, on sales of $75 million to $80 million. Analysts had been expecting earnings of 45 cents a share on sales of $94 million. For all of 2005, the company now expects earnings of $44 million to $47 million, or $1.15 to $1.25 a share, on sales of $330 million to $340 million. Previously, the company expected earnings of $67 million to $75 million, or $1.75 to $1.95 a share, on sales of $375 million to $395 million. Analysts had been expecting earnings of $1.85 a share on sales of $376.8 million. Shares were trading down $10.76 to $24.03.

Shares of Sirf Technology ( SIRF rose 12% after the maker of semiconductor and software products posted second-quarter results that were much better than expected. The company reported earnings of $3.9 million, or 7 cents a share, on sales of $35.4 million. Excluding items, the company posted pro forma earnings of $7.4 million, or 14 cents a share. Analysts were expecting earnings of 9 cents a share on sales of $32.5 million. A year ago the company posted pro forma earnings of $7.4 million, or 15 cents a share, on sales of $30.5 million. Looking ahead, Sirf said it expects strong demand to continue during the third quarter. Shares were trading up $2.31 to $21.36.

Other technology movers included Sun Microsystems ( SUNW, up 2 cents to $3.87; Microsoft ( MSFT - Get Report), up 9 cents to $25.63; Lucent Technologies ( LU, up 7 cents to $2.93; Intel ( INTC, down 16 cents to $26.73; Corning ( GLW, up $1.03 to $19.23; Cisco Systems ( CSCO, down 9 cents to $18.97; Motorola ( MOT, up 3 cents to $20.72; Oracle ( ORCL - Get Report), up 4 cents to $13.83; Sanmina-SCI ( SANM, down 69 cents to $4.57; Atmel ( ATML, down 40 cents to $2.45; and Applied Materials ( AMAT, down 32 cents to $17.94.