Monday's losses chipped away at last week's gains when the Nasdaq moved up 14 percent in four trading days.
"People are starting to say a low is in place and that the market is starting to turn around," Holly Liss, chief technical strategist at Fuji Futures, told Reuters. "However, I think until we get a little bit more evidence of that, they are going to be quick to take their profits."
Semiconductors stocks were hit hard after Morgan Stanley analyst Mark Edelstone cut ratings on a slew of companies, including Intel, down $1.87 to $26.25, Xilinx, down 90 cents to $40.24, and Broadcom, off $4.27 to $31.11.
Advanced Micro Devices shed $1.35 to $23.50, and IBM gained 55 cents to $96.75.
Cisco Systems closed off 76 cents to $17.22 before warning of weaker-than-expected sales and earnings in its third quarter. Nortel Networks dropped $1.35 to $15.25, and Lucent Technologies trimmed 3 cents to $7.40.
Online travel agency Expedia moved up 93 cents to $18.60 after announcing it will report its first operating profit in the third quarter, though losses including charges will be steep. The company's outlook was accompanied by some bullish reports on the online travel sector.
Yahoo added 66 cents to $17.62. America Online Time Warner, which reports earnings Wednesday, rose $1.09 to $43.31, while Amazon.com and eBay slid 64 cents and 75 cents a share, respectively. CMGI lost 24 cents to $2.51.
Among widely traded PC stocks, Dell Computer shed 81 cents to $27.11; Compaq Computer dipped 62 cents to $17.98; Gateway fell 30 cents to $15.65, and Apple Computer closed off 98 cents to $21.44.
Microsoft finished off $1.39 to $60.79. Oracle inched up 14 cents to $15.96, and Sun Microsystems ended off 75 cents to $16.34.
Staff and Reuters contributed to this report.