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The chief of the Tokyo Stock Exchange briefed TSE shareholders Thursday on a recent upgrade to the transaction data processing capacity of its computerized trading system following a string of system problems since November.

TSE President Taizo Nishimuro told a shareholders’ meeting, which included various brokerages, “Our bourse will continue efforts to revive confidence undermined by the series of problems.”

Nishimuro emphasized the TSE has boosted the system’s data processing capacity to up to 12 million transactions a day from the previous 9 million deals.

The bourse is also pressing ahead with a plan to develop a next-generation trading system that can provide higher data processing capacity, he said.

Last Nov. 1, a major trading system malfunction hit the bourse, forcing it to suspend all trading for the first time in its 56-year history.

The incident was followed on Dec. 8 by another major problem at which the TSE system could not cancel a bungled order for the stock of staffing company J-Com Co. placed by Mizuho Securities Co.

Then on Jan. 18, the TSE was forced to suspend trading in all issues due to its inability to deal with a flood of sell orders triggered by news that prosecutors had searched Internet firm Livedoor Co. on suspicion of accounting fraud.

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