Historical Data (Nikkei 225)

Update：Oct/01/2026

Date	Market Cap Basis	Index Weight Basis
Oct/01/2026	17.55	22.88

(*) For more detail regarding each indicators, please refer to the User's Guide (PDF file).

Guide to make better use of the Nikkei Indexes

The most trusted gauge of the stock markets

Nikkei Inc. has developed and calculated its own indexes from various perspective, looking at changes in society and markets. Nikkei Stock Average, the premier and flagship index of Japanese stocks, and other Nikkei Indexes are widely used globally as representative indicators of the Japanese equity market, and financial products linked to the Nikkei Indexes are traded around the world.

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Provision of index data

This section provides information on the procedures for using basic data in business use such as index constituents stock prices, dividends and weights, which are indispensable for calculating the Nikkei Stock Average, for business use.

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Here you will find answers to your questions about the Nikkei Stock Average and other Nikkei Indexes, as well as licensing agreements and use of this site.

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