THE REAL MOST ACTIVE Nasdaq 100 Falls 0.7%, Ends Below 50-Day Line.(B)

Byline: JUAN CARLOS ARANCIBIA

The Nasdaq Thursday fell sharply on heavier volume, losing 0.6% while the Nasdaq 100 gave up 0.7% to close back below its 50-day moving average.

Internet Security Systems fell 83 cents to 20.29, below its practically conjoined 50- and 200-day moving averages. The maker of anti-intruder equipment for computer networks has been forming a base since early December, correcting as much as 36%.

American Eagle Outfitters, a leader in apparel retailing, fell 1.17 to 30.64 after UBS initiated coverage with a reduce rating. Intraday, the stock traded as low as 29.55, below the 30.55 buy point from a cup-without-handle pattern the stock cleared June 7 on light volume.

Housevalues dropped 10 cents to close at 18.08 after climbing 11 straight days. The real estate Web site operator cleared a cup-without-handle pattern Wednesday. Its three-year sales growth is 51% and has the best EPS Rating in the Internet-eCommerce industry group.

*Micros Systems slid 1.36 to 44.75. The maker of point-of-sale computer systems to hotels, restaurants and stores is just above its 10-week moving average.