EquitiesBiggest system update to date responds to rise in overseas investorsTransactions on the Tokyo bourse in June have nearly doubled year-on-year amid soaring overseas investor activity. (Photo by Kazuho Fujiwara)RYUTA MINAMIHATAJune 24, 2026 18:09 JSTTOKYO -- The Tokyo Stock Exchange will upgrade its trading system as early as November, looking to nearly double processing capacity as an influx of overseas investors helps drive a surge in trading volume.