Dell ( DELL) was slightly higher in extra-session Instinet trading Thursday after the computer hardware maker met analysts' quarterly earnings estimates on stronger-than-expected revenue.

The stock was recently trading up 1.1% at $27.11 in extra action. The Nasdaq 100 Unit Trust ( QQQ) was the top volume mover after the bell, ticking down 0.4% to $36.70.

Analog Devices ( ADI) traded up 1.4% to $40.50 after the company met Wall Street's expectations for the first quarter.

Carreker ( CANI), a provider of consulting and software to financial firms, was one of the biggest winners in late trading, gaining 12.3% to $5.65. After the close, the company raised its fourth-quarter guidance.

Symbol Technologies ( SBL) was dropping 14.7% to $10.06. The company said following the end of regular trading that it met analysts' earnings estimates but added that its chief executive is planning to retire. Symbol's chairman and founder will reclaim the CEO post. ATI Technologies ( ATYT) was also among the biggest losers, falling 8.4%.

Intel ( INTC) was off 0.2% to $33.26, and Cisco ( CSCO) was losing 0.3% to $17.40. Juniper ( JNPR) was up 0.5% at $10.97, while Brocade ( BRCD) was lower by another 0.7%.

JDS Uniphase ( JDSU) was flat at $6.08, and Oracle ( ORCL) was also unchanged.

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