How is Nikkei 225 weighted?

Price-weighted, similar to the Dow Jones Industrial Average.

Nikkei Inc., the Japanese financial news publisher.

When is it rebalanced?

Annually, in October, with periodic extraordinary changes.

Nikkei 225 API — Nikkei Stock Average 225 Data for AI Agents

About the Nikkei 225

The Nikkei 225 is a price-weighted index of 225 large, publicly traded Japanese companies on the Tokyo Stock Exchange Prime Market. It is Japan's most widely followed benchmark and has a history going back to 1950.

Notable Constituents

A sample of the largest companies in the Nikkei 225 — all available via the Stock Market API.

7203

Toyota Motor

6758

Sony Group

9984

SoftBank Group

6861

Keyence

9983

Fast Retailing

6098

Recruit Holdings

API coverage for the Nikkei 225

Fetch the index membership list or query any constituent's data directly.

Index Members

List every constituent currently in the index.

GET /api/v1/indices/Nikkei225

Constituent Financials

Full income statement, balance sheet, and cash flow per company.

GET /api/v1/companies/{ticker}/financials

Start querying Nikkei 225 data

Free tier — instant API key, no credit card.

API Docs Pricing

Frequently Asked Questions

How is Nikkei 225 weighted?: Price-weighted, similar to the Dow Jones Industrial Average.
Who publishes it?: Nikkei Inc., the Japanese financial news publisher.
When is it rebalanced?: Annually, in October, with periodic extraordinary changes.

Nikkei 225 — Nikkei Stock Average 225