Shares of Lam Research ( LRCX) were among technology's losers Thursday, tumbling 13% after the chip-equipment maker posted better-than-expected second-quarter results but offered a disappointing forecast.

For the quarter ended Dec. 24, the company earned $167.3 million, or $1.15 a share, on revenue of $633.4 million. Analysts polled by Thomson Financial expected earnings of $1.11 a share on revenue of $620.8 million. During the year-earlier period, Lam earned $77.8 million, or 55 cents a share, on revenue of $358.2 million.

Looking ahead, Lam predicted third-quarter earnings of $1.03 to $1.07 a share, with revenue of $635 million to $650 million. Analysts project earnings of $1.12 a share on revenue of $633.5 million. Shares were trading down $7.57 to $46.56.

Hoku Scientific ( HOKU) zoomed 75% after its Hoku Materials unit signed a contract to supply Sanyo Electric with polysilicon. The deal, which will occur over a seven-year period, is worth about $370 million to Hoku. Hoku said that it would build a plant capable to producing some 2,000 metric tons of polysilicon per year, which could cost as much as $260 million to build. Shares of Hoku Scientific recently were up $2.32 to $5.42.

Shares of Apple ( AAPL) gave back recent gains even after the computer and iPod maker posted blowout first-quarter results. For the period ended Dec. 30, the company earned $1 billion, or $1.14 a share, on revenue of $7.12 billion. Analysts expected earnings of 78 cents a share and revenue of $6.42 billion. A year earlier, Apple earned $565 million, or 65 cents a share, on revenue of $5.75 billion.

For the second quarter, Apple sees earnings of 54 cents to 56 cents a share and revenue of $4.8 billion to $4.9 billion. Analysts project earnings of 60 cents a share on revenue of $5.22 billion. Shares, which had run up to an all-time high ahead of the report, recently were down $4.38 to $90.57.

NVE ( NVEC) tumbled 17% after the nanotechnology company's third-quarter results disappointed investors. The company earned $1.05 million, or 22 cents a share, on revenue of $3.86 million. The single-analyst forecast called for earnings of 25 cents a share on revenue of $4 million. Product sales almost doubled to $3.4 million from last year's $1.75 million. During the year-earlier period, NVE earned $401,385, or 9 cents a share, on total revenue of $2.61 million. Shares were trading down $4.88 to $24.67.

Shares of Systemax ( SYX) fell 5% after the computer distributor announced the retirement of its chief financial officer. Steven Goldschein, who had served as CFO since 1997, will be replaced by Larry Reinhold, effective immediately. Goldschein, meanwhile, agreed to remain with the company on a part-time basis for one year. Shares were trading at $19.20, down 95 cents.

Other technology movers included Intel ( INTC), down 40 cents to $20.64; Cisco Systems ( CSCO), down 11 cents to $26.87; Sun Microsystems ( SUNW), down 15 cents to $5.84; Applied Materials ( AMAT), down $1.01 to $18.39; Level 3 Communications ( LVLT), down 15 cents to $6.09; Oracle ( ORCL), down 23 cents to $17.23; Microsoft ( MSFT), down 13 cents to $30.97; and Sirius Satellite Radio ( SIRI), up 2 cents to $3.88.