The Dow was designed in 1896 as a simple average of a small number of leading industrial companies; today's 30-stock composition preserves that structure.

Is it weighted by market cap?

No — it is price-weighted, so higher-priced shares carry more weight regardless of company size.

Index · United States · Trades on NYSE + NASDAQ

DJIA — Dow Jones Industrial Average

A 30-stock price-weighted index of blue-chip U.S. companies.

About the DJIA

The Dow Jones Industrial Average is a price-weighted index of 30 prominent U.S. companies. Unlike most modern indices, it weights constituents by share price rather than market cap, which gives it a distinctive character as a market barometer.

Notable Constituents

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

UNH

UnitedHealth

MSFT

Microsoft

Goldman Sachs

Home Depot

Visa

MCD

McDonald's

API coverage for the DJIA

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/DJIA

Constituent Financials

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

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

Start querying DJIA data

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Frequently Asked Questions

Why only 30 stocks?: The Dow was designed in 1896 as a simple average of a small number of leading industrial companies; today's 30-stock composition preserves that structure.
Is it weighted by market cap?: No — it is price-weighted, so higher-priced shares carry more weight regardless of company size.
Who administers it?: S&P Dow Jones Indices.