A handful of Dow components made their way onto Instinet's list of most active stocks after hours Monday, but tech shares still held their own, with WorldCom ( WCOM) leading all issues in terms of volume.

Shares of the long-distance phone service provider were ticking up 0.5% to $8.17 in extra trading. WorldCom dropped 15.4% in the regular session.

Tyco ( TYC) was slipping 0.5% to $29.74. The conglomerate slid 16.1% in regular action after reports on RealMoney.com and then The Wall Street Journal pointed out that the company had made billions of dollars of acquisitions during the last three years without detailing the deals in press releases.

Late in the session, Standard & Poor's cut several ratings for Tyco and its Tyco Capital finance arm. S&P said it might change the ratings again, but the firm said Tyco has offered satisfactory answers to questions about its accounting practices.

Among other active issues, American Home Products ( AHP) was unchanged at $63.40. The S&P 500 Depositary Receipts ( SPY) were flat at $109.82.

Cisco ( CSCO) was up 0.4% to $18.38, and the Nasdaq 100 Tracking Stock ( QQQ) was level at $36.92. Sun Micro ( SUNW) was off 0.2% to $10.38. Microsoft ( MSFT) and Oracle ( ORCL) were fractionally higher.

United Technologies ( UTX) and Procter & Gamble ( PG), both members of the Dow Jones Industrial Average, were among the top-20 volume movers after the close, but both stocks were unchanged from their 4 p.m. EST closing levels.