What Is DIA? SPDR Dow Jones Industrial Average ETF Trust

DIA is the SPDR Dow Jones Industrial Average ETF Trust, often nicknamed the Diamonds. A single ticker gives you ownership of the 30 large, established companies in the Dow Jones Industrial Average, one of the oldest US stock indexes.

0.16% per year (16 basis points) as of early 2026. On a $10,000 investment, that is about $16 per year in fees, higher than VOO's 0.03% but in line with other index-tracking sector and benchmark funds. Verify the current figure on the State Street site.

DIA tracks the Dow Jones Industrial Average, which is price-weighted: a stock's influence depends on its share price rather than its market capitalization. So a high-priced stock can move the index more than a larger company with a lower share price. This is unusual; most major indexes, including the S&P 500, are market-cap-weighted.

VOO holds the 500 companies of the S&P 500, market-cap-weighted, at 0.03%. DIA holds only the 30 Dow companies, price-weighted, at 0.16%. DIA is far more concentrated and less technology-heavy, with more weight in established industrial, financial, and healthcare names. Walnut is not an investment adviser, so this is not a recommendation.

Yes, monthly. The trailing yield is approximately 1.6% as of early 2026, slightly higher than the S&P 500 because the Dow tilts toward mature, dividend-paying companies. Most brokers offer dividend reinvestment for DIA.

The 30 Dow components, which have included Goldman Sachs, Microsoft, Caterpillar, Home Depot, Visa, UnitedHealth, Amgen, Salesforce, McDonald's, and American Express. Because the index is price-weighted, higher-priced stocks carry the largest weights. The roster changes occasionally, so verify the current list on the issuer's site.

Exactly 30, matching the Dow Jones Industrial Average. That makes DIA far more concentrated than broad-market funds like VOO (about 500 holdings) or VTI (about 4,000). The narrow roster of established blue-chips is the defining feature of the Dow.

Approximately $38 billion as of early 2026. The exact figure moves with markets and flows, so verify on the State Street site.

January 1998. DIA was one of the earliest US ETFs, launched by State Street a few years after SPY, and remains the primary way to track the Dow in a single fund.

DIA trades like any stock during US market hours. Buy it through any broker: Robinhood, Fidelity, Schwab, Public, M1, or others. Fractional shares are supported at most modern brokers. Connect your broker to Walnut and the AI can show how DIA overlaps with what you already own.

DIA gives concentrated blue-chip exposure through the 30 Dow stocks, less tech-heavy than the S&P 500 and price-weighted. Whether it fits your portfolio depends on your time horizon and what else you own. Walnut is not an investment adviser, so this is not a recommendation.