JPX Research, Inc. (JPXRI) is pleased to announce the launch of its 10-Level Order Book Historical Data (the "Dataset"), processed and edited from the market information messages (the "FLEX Messages") provided by the Tokyo Stock Exchange, Inc. (the "TSE") to facilitate order book reconstruction. The service commenced on June 29, 2026 (Mon). JPXRI currently offers "FLEX Historical," which is historical information accumulated daily from FLEX Messages. FLEX Historical provides detailed raw data on orders and trades, enabling data users such as investors to perform advanced analyses for purposes like liquidity analysis, execution analysis, and trading strategy development by constructing order book information and preparing data. In contrast, the newly launched Dataset provides FLEX Messages in packet capture format from FLEX Historical, pre-processed into order book information and data-formatted, allowing data users to focus more on their analytical tasks. 10-Level Order Book Historical Data Eliminates the need for processing FLEX Messages into order book information and data formatting from the packet capture format in FLEX Historical. Retains update numbers with complete sequentiality, allowing for accurate reconstruction of order book information in the correct order. Broadly covers market information, including the latest trade price and best bid/ask, as well as 10 levels of bid/ask and market orders. Provided through Snowflake's data sharing feature. For data specifications and other details, please refer to the following page: 10-Level Order Book Historical Data How to Apply To start using this service, you must complete the prescribed application procedure and enter into a contract with JPXRI. For new applications, please proceed through the JPxData Portal. JPxData Portal (New Application) JPxData Portal For inquiries regarding this matter, please contact us via email at the address below under "Contact Us." Contact Us JPX Research, Inc. Client Services Depart