JPX Market Innovation & Research to launch 10-level Order Book Historical Dataset from TSE data

JPX Market Innovation & Research (JPXI) announced it will launch a 10-level Order Book Historical Dataset starting June 29, 2026. The dataset is derived from Tokyo Stock Exchange's FLEX Messages and processed to enable order book reconstruction. It builds on JPXI's existing "FLEX Historical" database, providing detailed raw data on orders and executions for advanced analysis by investors and data users.