JPX launches J-Quants API for retail investors

Rick Steves

J-Quants API is an API distribution service for retail investors, which distributes historical stock prices and corporate financial data through API. From April to the end of May, the beta service had been offered to early adopters chosen by lottery, but now the general launch will bring the beta version of J-Quants API to all […]

J-Quants API is an API distribution service for retail investors, which distributes historical stock prices and corporate financial data through API.

From April to the end of May, the beta service had been offered to early adopters chosen by lottery, but now the general launch will bring the beta version of J-Quants API to all clients. The launch of the full-fledged service remains to be disclosed.

The API product was developed by JPXI, the exchange’s division that provides an environment to promote trading utilizing IT and data analysis for individuals interested in data science via the “J-Quants” project.

Retail investors in Japan have no easy access to raw financial data

In Japan, retail investors are not provided with easy access to raw financial data. JPX Group is looking to tackle this issue. Last year launched an environment through the J-Quants project, which enabled retail investors to learn about investment analysis utilizing data, by providing financial data that professionals use such as historical stock prices and corporate financials data together with analytical methods for these data.

JPX began providing financial data through the API, including stock price and corporate financial data. The initiative was deemed a success and the firm received many requests for an expansion of the service. This led to the beta launch, that for two months was limited to early adopters and now is open to general users.

The following data will be distributed though API:

  • Historical stock price data of listed companies on the Tokyo Stock Exchange (stock prices adjusted for stock splits, etc. (opening/high/low/closing prices) and trading volume, etc. from 2017)
  • Corporate financial data taken from earnings reports (summary information of quarterly earnings reports from 2017)
  • Issue information
  • Industrial sector information
  • Planned financial results announcements for the next day

JPXI will use the feedback from users during the beta service period to improve the J-Quants API before the full-fledged launch as it aims to become a sustainable paid service. The service also features Slack Workspace for registered users to exchange views.

JPX Group owns and operates Tokyo Stock Exchange (TSE), which developed an ETF RFQ trading platform called “CONNEQTOR“. By providing an RFQ function, TSE aims to facilitate easy access to world-class liquidity and pricing for Japanese institutional investors so that ETFs can be traded faster and cheaper in Japan.

The RFQ function enables institutional investors who want to trade a particular ETF at a particular quantity, etc. to send out a request for a quote to a large number of market makers. They can then trade at a price individually offered by a market maker. In CONNEQTOR, although the quotes are shown anonymously, the process is highly transparent, and investors are able to trade only at the best price offered.

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