The

Nasdaq released a partial list of securities whose June 29 closing prices were adjusted today after trading was disrupted Friday afternoon due to a

network glitch. The exchange extended trading until 5 p.m. Friday to make up for lost time.

As of 3 p.m. EDT the

list of stocks whose prices had been adjusted included 66 securities, among them the

Nasdaq 100

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tracking stock, as well as tech heavyweights

Dell

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,

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Microsoft

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and

Worldcom

(WCOM)

, according to the NasdaqTrader.com Web site, which is published by the Nasdaq Stock Market.

Further changes are anticipated and will be published on

NasdaqTrader.com under Vendor Alerts.

Trading was already volatile Friday due to end-of-quarter window dressing and the annual rebalancing of the

Russell

stock indices. At the end of each quarter, managers dress up their portfolios to present to shareholders, and the Russell rebalancing forces money managers with funds that track the indices to sell and buy stocks to match the indices' changes.

On Monday, the Nasdaq shed 11.8 points, or 0.6%, to 2148.7, while the Russell eased 14.25 points, or 2.8%, to 498.39.