A malfunction in the Tokyo Stock Exchange’s derivatives system, which disrupted trading for almost three hours on Tuesday, was caused by a software problem introduced during an upgrade over the weekend, according to a spokesman for the exchange.
“The system failure was caused by a software bug, which was created in the process of upgrading the function for disseminating order book information,” TSE spokesman Mitsuo Miwa told theTRADEnews.com.
As a result of the failure, derivatives trading on the exchange was suspended between 09.21 and 11.00 in the morning session, and between 12.30 and 13.45 in the afternoon session on Tuesday.
The exchange apologised for the malfunction in a statement and said it is committed to drawing up and implementing a plan to prevent further issues as soon as possible. “We will announce measures to prevent a recurrence of this kind of problem once they have been finalised,” Miwa added.