InterDigital Inc (IDCC)

[ciciagt]

OT: A single mysterious computer program that placed orders - and then subsequently canceled them - made up 4 percent of all quote traffic in the U.S. stock market last week, according to the top tracker of high-frequency trading activity. The motive of the algorithm is still unclear.
The program placed orders in 25-millisecond bursts involving about 500 stocks, according to Nanex, a market data firm. The algorithm never executed a single trade, and it abruptly ended at about 10:30 a.m. Friday.
"Just goes to show you how just one person can have such an outsized impact on the market," said Eric Hunsader, head of Nanex and the No. 1 detector of trading anomalies watching Wall Street today. "Exchanges are just not monitoring it."
The scariest part of this single program was that its millions of quotes accounted for 10 percent of the bandwidth that is allowed for trading on any given day, according to Nanex..........
Hunsader warned that regulators better do something fast, speculating that this single program could have led to something very bad if big news broke or a sell-off occurred and one entity was hogging this much of the system.

Mysterious Algorithm Was 4% of Trading Activity Last Week
http://www.cnbc.com/id/49333454