Several strangers to the after-hours session were burying the tech heavyweights on the Instinet platform, but the most active stocks in extra trading remained flat with their closing levels.

Echelon

(ELON)

, a maker of products that connect appliances to the Internet, was the volume leader after the close, but was unchanged at $17.52.

Pharmacyclics

(PCYC)

, a pharmaceuticals company, was also flat, at $26.96. Biotech outfit

Genta

(GNTA)

, the No. 3 volume mover, was at $15.40, the price the stock ended at in regular trading.

DeVry

(DV)

was also active but hadn't budged from the 4 p.m. EST close at $26.15.

Among the usual suspects,

Cisco

(CSCO) - Get Report

was inching up 0.1% to $19.71.

Intel

(INTC) - Get Report

, which said earlier that it was more and more comfortable with its fourth-quarter revenue estimates, was flat at $32.31.

Nextel

(NTXL)

was down 0.1% to $10.98, and

Amazon.com

(AMZN) - Get Report

was gaining 0.2% at $11.50.

Netopia

(NTPA)

was one of the big winners after regular trading ended, climbing 10.8% to $5.85.

CDW Computer Centers

(CDWC)

was tacking on 5.7% to $55.77.

OmniVision Technologies

(OVTI)

was dropping 18.1% to $5.11 in extra trading. After the close, the company posted a second-quarter loss of a penny a share, excluding items. Two analysts surveyed by First Call expected the company to earn 1 cent a share. The company also lowered its guidance for the fiscal third quarter.

SeaChange International

(SEAC) - Get Report

gave back 6.2% to $28.20 after the close. The company reported a third-quarter loss of 5 cents a share, missing estimates for the period, but maintained its near-term guidance.