DIA vs SPY ETF holdings comparison
SPDR Dow Jones Industrial Average ETF Trust (DIA) · SPDR S&P 500 ETF Trust (SPY)
DIA and SPY overlap by 28.9% by portfolio weight. The remaining 71.1 percentage points are not counted as shared holdings weight by this calculation. They share 30 stocks; the largest shared position is Microsoft Corp (MSFT), contributing 5.45% to the overlap.
What this means
DIA and SPY share a smaller portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "low holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Overlap by weight sums the smaller of the two funds' weights for every stock they both hold. It answers "how much of my money is in the same stocks either way?" See methodology.
This comparison covers normalized equity positions represented in the dataset. Cash, derivatives, options, structured notes, and other non-equity assets are not included, so the result is not a complete comparison of every asset or risk in either fund.
Top shared holdings
| Company | Ticker | in DIA | in SPY |
|---|---|---|---|
| Microsoft Corp | MSFT | 5.45% | 5.52% |
| Apple Inc | AAPL | 3.43% | 6.88% |
| Alphabet Inc Cl A | GOOGL | 3.85% | 3.08% |
| Amazon.Com Inc | AMZN | 2.89% | 3.86% |
| Nvidia Corp | NVDA | 2.36% | 7.80% |
| Jpmorgan Chase + Co | JPM | 3.95% | 1.44% |
| Johnson + Johnson | JNJ | 3.03% | 0.99% |
| Visa Inc Class A Shares | V | 4.26% | 0.96% |
| Walmart Inc | WMT | 1.17% | 0.70% |
| Cisco Systems Inc | CSCO | 1.23% | 0.66% |
Holdings only in DIA or SPY
DIA has 0 fund-only positions representing approximately 0.0 percentage points of reported exposure; SPY has 473 fund-only positions representing approximately 61.0 percentage points of reported exposure. These are positions whose normalized security identifiers appear in one issuer file but not the other.
Largest positions only in DIA
No fund-only positions in this holdings snapshot.
Largest positions only in SPY
| Company | Ticker | Weight |
|---|---|---|
| Broadcom Inc | AVGO | 2.55% |
| Alphabet Inc Cl C | GOOG | 2.45% |
| Meta Platforms Inc Class A | META | 1.89% |
| Micron Technology Inc | MU | 1.59% |
| Tesla Inc | TSLA | 1.49% |
| Eli Lilly + Co | LLY | 1.48% |
| Berkshire Hathaway Inc Cl B | BRK.B | 1.40% |
| Advanced Micro Devices | AMD | 1.18% |
| Exxonmobil Holdings Corp | XOM | 1.01% |
| Mastercard Inc A | MA | 0.73% |
FAQ
How much do DIA and SPY overlap?
DIA and SPY have 28.9% overlap by weight, sharing 30 equity positions (out of 30 in DIA and 503 in SPY). The official holdings files used are dated 2026-08-25 for DIA and 2026-08-25 for SPY.
What does 28.9% overlap mean?
DIA and SPY share a smaller portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "low holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Which stocks do DIA and SPY both hold?
The largest shared positions are Microsoft Corp, Apple Inc, Alphabet Inc Cl A, Amazon.Com Inc, Nvidia Corp. The top shared holdings with weights in each fund are shown on this page.
What holdings are different between DIA and SPY?
DIA has 0 positions not found in SPY, while SPY has 473 positions not found in DIA. The largest fund-only positions and their weights are shown on this page.