NEW YORK _ Nasdaq OMX Group says a three-hour trading halt last week was partly the result of issues within the company's control.
In a statement released Thursday, the company detailed some of its early findings from an internal review. Nasdaq blamed ``a confluence of unprecedented events'' that overwhelmed the exchange's system for handling price information. It said high-speed trading played no role in the incident.
``NASDAQ OMX is deeply disappointed in the events of August 22,'' the statement said, ``and our performance is unacceptable to our members, issuers and the investing public.''
The outage cracked the midday calm of a quiet summer day on Wall Street, sending brokers and traders scrambling to figure out what went wrong. Suspicion immediately fell on high-speed trading.