Oct. 28--Silicon Valley's largest tech stocks by market value, the Dow and the Nasdaq all were lower today in a sell-off on Wall Street.

Apple, Google, Cisco Systems, Hewlett-Packard, Oracle, Intel, Gilead Sciences, eBay, Yahoo and Adobe Systems all declined.

The combined market value of Silicon Valley's 150 largest public companies fell 2.4 percent to $1.2 trillion.

According to The Associated Press, investors were disappointed in a slide in new-home sales last month, as well as a forecast by Goldman Sachs that the nation's economy expanded at a 2.7 percent yearly pace in the third quarter, below expectations of 3.3 percent growth. The government's report on gross domestic product is due Thursday.

The blue chip Dow Jones industrial average, which includes Cisco, HP and Intel, fell 119.48, or 1.2 percent, to 9,762.69. The tech-heavy Nasdaq composite index dropped 56.48, or 2.7 percent, to 2,059.61. The Standard & Poor's 500 index was down 20.78, or 1.95 percent, to 1,042.63.

Quantum, a San Jose data storage company, was up 35 cents, or 21.5 percent, to $1.98 on an otherwise dismal day for tech stocks. According to Bloomberg News, Quantum reported earnings for its latest quarter that exceeded analysts' expectations.

-----

To see more of the San Jose Mercury News, or to subscribe to the newspaper, go to http://www.mercurynews.com.

Copyright (c) 2009, San Jose Mercury News, Calif.

Distributed by McClatchy-Tribune Information Services.

For reprints, email tmsreprints@permissionsgroup.com, call 800-374-7985 or 847-635-6550, send a fax to 847-635-6968, or write to The Permissions Group Inc., 1247 Milwaukee Ave., Suite 303, Glenview, IL 60025, USA.

NWS, NDAQ, AAPL, 6689, GOOG, CSCO, HPQ, ORCL, INTC, GILD, EBAY, YHOO,

A service of YellowBrix, Inc.