Equity round-up: Oops, I did it again

Additionally, the order, for 40 times more J-Com shares than actually exist, should have automatically been cancelled by the exchange. Mizuho is now threatening to sue the Tokyo Stock Exchange and the exchange’s plans for an IPO are in jeopardy. The fault is the second serious failing of the Tokyo bourse’s new trading system in as many months. In November, another glitch in the same new computer system caused the first shutdown in the Tokyo exchange’s 56-year history.