Shares of

Lattice Semiconductor

(LSCC) - Get Report

were among technology's losers Thursday, falling 5% after the chipmaker narrowed its third-quarter revenue guidance.

The company now sees sequential sales growth of 1% to 3%, which implies revenue of $63.3 million to $64.6 million for the third quarter. Analysts polled by Thomson First Call project revenue of $64.3 million. Previously, the company predicted sales would be flat to up 4% from the second quarter. Lattice expects operating expenses of about $36 million, up $1 million from its earlier view. The company raised its forecast for "other income" to $4.2 million from $3.2 million. Shares were trading down 34 cents to $7.15.

Diodes

(DIOD) - Get Report

rose 9% after the chipmaker boosted its third-quarter revenue projection. The company now sees sequential growth of 9% to 11%, up from an earlier view of 4% to 7%. The new guidance implies third-quarter revenue of $90.1 million to $91.8 million. Analysts project revenue of $87.4 million. Diodes continues to predict a gross margin of about 33.2%. Shares were up $3.54 to $43.93.

Shares of

WebMethods

( WEBM) fell 1% after the software company said its financial chief plans to leave by the end of the year. The company said that Mark Wabschall is resigning for family reasons. WebMethods has hired a search firm to help it find a new CFO. John Andary, a consultant and former interim financial chief of

Covansys

( CVNS), will serve as principal financial officer on an interim basis. WebMethods shares recently changed hands at $8.13, down 11 cents.

Shares of

Time Warner Telecom

(TWTC)

fell 5% after the provider of voice and data-networking products said its principal shareholders are selling 27.5 million shares of its class A stock. The shareholders also will give buyers an option to purchase an additional 4.13 million shares to cover over-allotments. The shares are being sold by

Time Warner

(TWX)

, Advance Telecom Holdings and Newhours Telecom Holdings. Time Warner Telecom, which has 121 million shares outstanding, won't receive any proceeds from the offering. Shares were trading down 85 cents to $17.78.

Though the company lowered its second-quarter revenue forecast, shares of

Xilinx

(XLNX) - Get Report

moved higher Thursday. The chipmaker expects revenue for the September period to be down 4% to 7% from the prior quarter's revenue of $481.4 million. Previously, Xilinx predicted its sales would be flat to down 5% sequentially. The new forecast implies second-quarter revenue of $447.7 million to $462.1 million. Analysts, on average, forecast revenue of $472.6 million. Xilinx blamed the shortfall on lower-than-expected revenue from the Asia Pacific region. Shares of Xilinx were trading up 97 cents, or 5%, to $22.51.

XM Satellite Radio

( XMSR) shares surged 9% after Credit Suisse upgraded the stock to outperform from neutral. The stock jumped $1.15 to $13.16. Rival

Sirius Satellite Radio

(SIRI) - Get Report

rose 11 cents to $4.14.

Other big technology volume movers included

Level 3 Communications

(LVLT)

, up 21 cents to $4.76;

Microsoft

(MSFT) - Get Report

, up 34 cents to $26.32;

Sun Microsystems

(SUNW) - Get Report

, up 1 cent to $5.23;

Intel

(INTC) - Get Report

, down 15 cents to $19.68;

Cisco Systems

(CSCO) - Get Report

, up 1 cent to $22.66; and

Oracle

(ORCL) - Get Report

, down 13 cents to $16.26.