About J-Quants API
Welcome to J-Quants API
J-Quants API is a service for individuals that distributes financial data such as historical stock prices and corporate financial information via API. Users can obtain financial data in a formatted and easy-to-analyze form.
- J-Quants API is currently migrating from the old version (V1) to the new version (V2).
- V2 was released on December 22, 2025.
- The old version (V1) is scheduled to be discontinued.
- While there will be a parallel operation period for the time being, we ask all users to migrate to the new version (V2) as soon as possible.