Tsurushima said the stock exchange would ask Fujitsu to clarify why it failed to report this information and said the bourse was considering seeking compensation from the Japanese computer company. The software failure brought share trading to a standstill for all but the last 90 minutes of the session on Monday last week.
It was the first time in its history of more than half a century that trading in all stocks was halted and the first major system failure since 1997. The crash came at a delicate time for the bourse, which has already been forced to delay a planned initial public offering of its own shares that it hopes will boost efficiency and competitiveness.