There was no indication that the outage at the world's third-largest exchange resulted from hacking or other cybersecurity breaches.
“We are extremely sorry for the troubles we have caused,” exchange President and Chief Executive
Miyahara and other exchange officials said a computer hardware device they called “machine one” failed and the backup “machine two” didn’t kick in, so stock price information was not being relayed properly.
The officials characterized the problem as a memory malfunction.
They said that rebooting the system during a trading session would have caused confusion for investors and other market participants.
The
The outage Thursday also affected other, smaller stock exchanges in
The malfunction of basic hardware drew attention to vulnerabilities in the country's digital systems. Newly appointed Prime Minister
Previous outages occurred when the huge “arrowhead” system created by Fujitsu to handle its electronic trading, which officials said involves some 350 servers, became overwhelmed with too many orders at one time.
That’s what happened on
The exchange promised to investigate, conduct malfunction tests and change the system to ensure that a flood of orders would not cause the entire system to stop working. Several top executives of the exchange were penalized.
Despite such occasional disruptions, Miyahara said the motto of the exchange was “never stop."
Foreigners account for about 70% of all brokerage trading in the
“I think it is very regrettable that investors are limited in their trading opportunities because they cannot trade on the exchanges," said
He said the
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Kurtenbach reported from Mito,
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