After-hours trading remained relatively light, capping off a week where the extended session has been pretty quiet overall. Lacking any major news items propelling the stocks either way, many strangers to the extended session paid a visit to the after-hours party.

Companies such as Apria Healthcare Group ( AHG), Gentex Corporation ( GNTX), and Plug Power ( PLUG) all traded in light volume and produced little movement, except for Apria, which dropped 4.8%. The company had gained 7% during the day after reporting Thursday that second-quarter revenue had increased over the previous year.

Amylin Pharmaceuticals ( AMLN) said preliminary testing data of one of its drugs to treat Type 2 diabetes showed lowered incidence of nausea for those that take the drug. Amylin was the number one mover on the Instinet 20 most active after-hours stocks, but remained unchanged at $7.60, 40 minutes into the extended session on just over 500,000 shares changing hands.

Mykrolis ( MYK) was off 2.8%, to $15.80 in the extended session, after its trading debut during the regular session. The company, which was spun off by Millipore Corp. ( MIL), closed at $16.25, below its open price of $17.25, but above its offering price of $15.

Oracle ( ORCL) was gaining back some of the ground lost during the regular session as shares were up 0.3% to $15.21 in the extended session. Friday morning, Goldman Sachs analyst Rick Sherlund cut his earnings estimate for 2002 by 2 cents. During the regular session, investors didn't like what they heard as shares fell 83 cents, or 5.2% to close at $15.16.

After dropping 2.4% in the regular session, Nortel Network Corp. ( NT) was up 0.3%, to $7.40 in the extended session. Earlier in the day the company said it sold $1.5 billion of convertible notes.

Other than the newcomers, the regulars also made an appearance. Cisco ( CSCO) and Sun Microsystems ( SUNW) were slightly up, Intel ( INTC) was even, and Microsoft ( MSFT) was slightly down all on light volume.

10 most active stocks on Island ECN (5:00 p.m. EDT)
Company Price Change Session Volume
Nasdaq 100 Tracking Stock (QQQ) 40.25 N/A 89,629
iBeam Broadcasting (IBEM) 0.19 0.00 88,642
Exodus Communications (EXDS) 1.80 -0.02 50,562
Oracle (ORCL) 15.18 +0.02 38,187
Brocade Communications (BRCD) 32.79 0.00 34,653
Cisco Systems (CSCO) 18.33 0.00 34,035
JDS Uniphase (JDSU) 8.85 +0.08 28,469
Palm, Inc. (PALM) 4.28 0.00 21,933
Ciena (CIEN) 30.06 +0.04 21,563
Cima Labs (CIMA) 54.03 +0.03 21,000

Island ECN offers trading, mainly in Nasdaq-listed stocks, from 7 a.m. to 8 p.m. EST.

Confused? TheStreet.com explains how the rules change when the sun goes down in Investing Basics: Night Owl , a section devoted to after-hours trading.

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