JPX Market Innovation & Research, Inc. (JPXI) today announced that, as of June 29, 2026, it will begin providing the 10-level Order Book Historical Dataset, which is derived from market data messages (FLEX Messages) provided by Tokyo Stock Exchange and processed to facilitate the reconstruction of order books.

JPXI provides “FLEX Historical,” a historical database compiled from daily FLEX Message records. FLEX Historical provides detailed raw data on orders and executions, enabling investors and other data users to perform advanced analyses (such as liquidity/execution analysis and trading strategy development) by constructing order book data and processing the information.

Furthermore, this newly launched Dataset consists of FLEX Historical messages in packet capture format that have been pre-processed into order book data and formatted, allowing users to focus more fully on their analytical work.

10-Level Order Book Historical Data:

• Eliminates the user’s work by converting packet capture data in FLEX Historical to order book data and performing other additional data formatting.
• Maintains update numbers with a strict sequence, allowing for reproduction of order book data in the exact order.
• Provides a wide range of quote information, including the top 10 quotes and market orders, in addition to the most recent execution price and best bid/ask quotes.
• It is provided through Snowflake’s data sharing feature.