Updated from 12:45 p.m. EDT

Shares of

Zoran

( ZRAN) were among the worst-performing technology stocks Wednesday, falling 22.4% after the company posted solid third-quarter results but warned that fourth-quarter results would miss expectations by a wide margin.

Excluding items, the DVD chipmaker earned 24 cents a share on sales of $119.7 million. Analysts polled by Thomson First Call were expecting earnings of 16 cents a share on sales of $116.5 million. Looking ahead, the company forecast a fourth-quarter profit of 1 cent to a loss of 5 cents a share on sales of $73 million to $78 million. Analysts had been expecting earnings of 13 cents a share on sales of $111.5 million. The fourth-quarter results assume lower DVD business as customers work through excess inventory. Shares traded down $2.84 to $9.85.

Sina

(SINA) - Get Report

rose 25.2% after the Chinese Internet company posted third-quarter earnings above expectations. Excluding items, the company earned $16.9 million, or 32 cents a share, on sales of $52.5 million. Analysts were expecting earnings of 28 cents a share on sales of $48.3 million. Looking ahead, Sina forecast pro forma fourth-quarter income of $18.5 million to $19 million on sales of $54.5 million to $55.5 million. Analysts are expecting earnings of 28 cents a share on sales of $48.8 million. Shares traded up $7.10 to $35.29.

Shares of

MicroStrategy

(MSTR) - Get Report

rose 31% after the company posted strong third-quarter earnings and sales. The company posted a profit of $122 million, or $7.22 a share, on sales of $60.6 million. The earnings results included a noncash income tax benefit of $103.6 million. Analysts were expecting earnings of 51 cents a share on sales of $48.5 million. Looking ahead, MicroStrategy forecast fourth-quarter earnings of 39 cents to 79 cents a share on sales of $47.7 million to $57.4 million. Analysts are expecting earnings of 75 cents a share on sales of $56.6 million. Shares traded up $14.46 to $61.18.

F5 Networks

(FFIV) - Get Report

rose 22% after the company posted fourth-quarter earnings and sales that beat expectations and said first-quarter results would be better than expected. Excluding items, the networking company earned 28 cents a share on sales of $50.2 million. Analysts were expecting earnings of 21 cents a share on sales of $46.6 million. Looking ahead, F5 expects first-quarter earnings of 20 cents to 21 cents a share on sales of $52 million to $54 million. Analysts are expecting earnings of 17 cents a share on sales of $50 million. Shares traded up $7.22 to $40.05.

Shares of

Taser International

(TASR)

rose 0.6% after the maker of stun guns said that its nonlethal weapons have been approved for field trials by national police forces in Sweden and Finland. The Finnish Ministry will field test the stun guns from Oct. 26 to May 31, 2005. Following the trial, Finnish officials will decide if they want to deploy the weapons. The Swedish police are expected to develop a field program by the end of the year. Shares traded up 27 cents to $42.24.

TTM Technologies

(TTMI) - Get Report

rose 3.4% after the company posted in-line third-quarter financial results but warned that fourth-quarter earnings and sales would be below expectations. The maker of circuit boards posted a profit of 19 cents a share on sales of $62.2 million. Analysts were looking for 19 cents a share on sales of $63.1 million. Looking ahead, the company forecast fourth-quarter earnings of 14 cents to 18 cents a share on sales of $58 million to $62 million. Analysts had been expecting earnings of 21 cents a share on sales of $67.2 million. Pricing pressure and higher raw material costs are expected to impact fourth-quarter results. Shares traded up 30 cents to $9.26.

Other technology volume leaders included

Microsoft

(MSFT) - Get Report

, up 25 cents to $28.15;

Sirius Satellite Radio

(SIRI) - Get Report

, down 13 cents to $3.89;

Intel

(INTC) - Get Report

, up 60 cents to $22;

Cisco

(CSCO) - Get Report

, up 44 cents to $18.55; and

Sun Microsystems

(SUNW) - Get Report

, up 16 cents to $4.43;

Lucent

( LU), up 4 cents to $3.49.