The NYSE Euronext stock exchange experienced a major outage for 41 minutes yesterday afternoon.
The exchange blamed a human error for the problem, which “led to a technical issue in the matching engine”. It said the issue was not directly a software or hardware problem.
Euronext, whose European cash markets are based around the continent in locations such as Amsterdam, Paris and Brussels, declined to give exact details of what happened. It is now conducting a “thorough review” into the circumstances.
But Computerworld UK understands that an operator working for NYSE Euronext inadvertently shut down some trading processes, by setting in action a ‘halt’ command on the network.
The problem began yesterday at 16.42 Central European Time, when some matching processes on stocks and bonds failed to work after the shut down command was initiated. As a result, existing orders were not booked and new orders were rejected.
The problem was fully resolved at 17.23 CET, at the end of the day’s trading, and NYSE Euronext reopened the markets and orders were processed.
The market closing auction “proceeded at 5:35PM as scheduled”, the exchange said. Euronext has been functioning fully today.
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