The Dow contains 30 large U.S. companies

The Dow Jones Industrial Average, often called "the Dow," tracks 30 of the largest publicly traded companies in the United States. These 30 stocks represent major industries — technology, finance, healthcare, energy, retail, and manufacturing. The Dow is one of the oldest stock indexes in the world, first published in 1896 with just 12 companies.

The 30 companies change over time. When a company's size shrinks, its relevance fades, or it faces serious problems, the index committee removes it and adds a different one. This has happened roughly 50 times since the Dow began. The most recent change occurred in 2024, though the full list shifts periodically as the economy and markets evolve.

Key Takeaways

  • The Dow tracks exactly 30 large U.S. companies, not a variable number that changes with market conditions.
  • The companies in the Dow are removed and replaced when the index committee decides a swap is necessary, which happens roughly once per year on average.
  • The Dow is weighted by stock price, meaning a $200 stock has more influence on the index than a $50 stock, even if both companies are the same size.
  • The other major U.S. stock indexes — the S&P 500 and the Nasdaq-100 — track different numbers of companies and use different weighting methods.

Who decides which 30 companies belong in the Dow

The S&P Dow Jones Indices, a division of S&P Global, manages the Dow. A committee at S&P Dow Jones reviews the index regularly and decides when to add or remove a company. The committee does not announce changes far in advance — they typically announce a change a few days before it takes effect.

A company usually gets removed from the Dow when its market value drops significantly, when it merges with another company, or when the committee believes it no longer represents its industry well. A company gets added when it is large enough, profitable, and considered representative of the U.S. economy. The committee also considers whether adding a company would improve the Dow's overall diversity across industries.

How the Dow's 30 stocks are weighted

The Dow uses price weighting, which means the stock price itself determines how much influence each company has on the index. A company whose stock trades at $300 per share has roughly three times the impact of a company whose stock trades at $100 per share, regardless of how many shares are outstanding or how large the company actually is.

This is different from the S&P 500, which uses market-cap weighting — a method that bases influence on the total market value of all shares outstanding. Because of price weighting, stock splits and dividend decisions can shift which companies have the most influence on the Dow's movement. When a company splits its stock (say, one share becomes two), its price per share drops, and so does its weight in the index.

The current 30 companies in the Dow

The 30 companies span industries including technology (Apple, Microsoft, Intel), finance (JPMorgan Chase, Goldman Sachs, American Express), healthcare (Johnson & Johnson, UnitedHealth), energy (Chevron), consumer goods (Coca-Cola, Procter & Gamble, McDonald's), and manufacturing (Boeing, Caterpillar). The list also includes retailers, pharmaceutical makers, and industrial companies.

Because the Dow committee makes changes periodically, the exact roster shifts. To see the current 30 companies, visit the S&P Dow Jones Indices website or financial data sites like Yahoo Finance, MarketWatch, or your brokerage's research section. These sources update when ready when a change is announced.

How the Dow differs from other major indexes

The S&P 500 tracks 500 large U.S. companies and uses market-cap weighting, so larger companies have more influence. The Nasdaq-100 tracks 100 companies, mostly in technology and growth sectors, and also uses market-cap weighting. The Russell 2000 tracks 2,000 smaller U.S. companies. Each index answers a different question about how the market is performing.

The Dow is the smallest of these indexes by company count, which makes it move more dramatically when one of its 30 stocks has a big day. Because it includes only large, established companies, the Dow tends to move less dramatically than indexes that include smaller or newer firms. Many investors use all three major indexes — the Dow, S&P 500, and Nasdaq-100 — to get a fuller picture of U.S. stock market performance.

Why the number 30 matters

Thirty companies is large enough to represent major sectors of the U.S. economy but small enough to track and understand. A smaller index would be too narrow; a much larger one would be harder to manage and would overlap too much with the S&P 500. The number 30 has remained stable since 1928, when the Dow expanded from 20 companies to its current size.

The stability of the number 30 — even as individual companies come and go — is part of what makes the Dow useful as a long-term benchmark. Investors and economists can compare the Dow's performance across decades knowing that it always represents 30 large U.S. companies, even though which companies those are has changed many times.

Frequently Asked Questions

Can I buy a single stock that tracks all 30 Dow companies?

Yes. Exchange-traded funds (ETFs) and mutual funds track the Dow directly. The SPDR Dow Jones Industrial Average ETF (ticker: DIA) and the iShares Core Dow ETF (ticker: IVV) are two common options. These funds hold all 30 stocks in the same proportion as the Dow itself, so buying one share of the fund gives you exposure to all 30 companies.

Does the Dow include international companies?

No. The Dow includes only U.S. companies, though many of them earn significant revenue overseas. If you want exposure to international stocks, you would need a different index or fund. The MSCI EAFE index tracks large companies in developed markets outside the U.S., and the MSCI Emerging Markets index tracks companies in developing economies.

What happens to the Dow when a company in it goes bankrupt?

The S&P Dow Jones Indices committee removes the bankrupt company and adds a replacement, usually within days. This has happened only a few times in the Dow's history. The most recent example was General Motors in 2009, which was replaced by Cisco Systems.

How often does the Dow change?

Changes happen roughly once per year on average, though some years see no changes and others see two or three. The committee does not follow a fixed schedule; it makes changes when it believes they improve the index. You can find announcements of Dow changes on the S&P Dow Jones Indices website and major financial news outlets.