Historical Data (Nikkei 225)

Update：May/12/2025

Date	Market Cap Basis	Index Weight Basis
May/01/2025	1.35	1.77
May/02/2025	1.36	1.79
May/07/2025	1.36	1.79
May/08/2025	1.36	1.79
May/09/2025	1.38	1.82
May/12/2025	1.38	1.83

(*) 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.

License Agreement

Nikkei retains all intellectual property rights to the Nikkei Stock Average and other Nikkei Indexes. In addition to displaying the data on our website and mobile apps, Nikkei guides information on approval procedures for different usage patterns, including display and non-display usage of the indexes, and creation of financial instruments on the indexes.

More details

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.

More details

FAQ

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.

View all FAQ

Contact us

Please contact us here for any questions about the Nikkei Indexes, your interest in using the Nikkei Indexes for business purposes and/or any comments about this site.