The Tokyo Stock Exchange said Sunday it has raised the number of stock trades its computer system can execute each day to 5 million, up from the current 4.5 million, as part of its emergency measures to deal with surges in transactions like those stemming from the scandals involving Livedoor Co.

Following the improvement, the TSE said it will change its rules for putting a halt to trading starting Monday. Transactions will now be suspended if the number reaches 4.5 million, instead of the current 4 million.

The world's second-largest bourse said it will continue shortening trading hours in the afternoon and call on brokerages not to repeatedly make small orders.