DIA vs MGK Overlap
DIA is an industrials ETF from SPDR, while MGK is a U.S. growth equity ETF from Vanguard. DIA and MGK show limited overlap, with an estimated weighted overlap of 18.26%. They share 9 holdings in the loaded dataset, led by MSFT, AAPL, and AMZN.
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Quick Answer
DIA is an industrials ETF from SPDR, while MGK is a U.S. growth equity ETF from Vanguard. DIA and MGK show limited overlap, with an estimated weighted overlap of 18.26%. They share 9 holdings in the loaded dataset, led by MSFT, AAPL, and AMZN.
- 18.26% weighted overlap across 9 shared holdings.
- The top three shared holdings explain 62.15% of the measured overlap.
- MGK is the broader fund, while DIA is more targeted.
- The overlap is mostly explained by the top shared positions rather than sector labels alone.
- Holding both can still add materially different exposure.
Data Freshness
- DIA holdings
- Mar 12, 2026
- MGK holdings
- Mar 12, 2026
- Overlap computed
- Mar 13, 2026
- Data source
- Financial Modeling Prep
Review the methodology for the overlap formula and refresh policy.
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About These ETFs
What Stands Out In This Comparison
What This Means
DIA is an industrials ETF from SPDR, while MGK is a U.S. growth equity ETF from Vanguard. DIA and MGK do not own much of the same portfolio weight. That usually means you are combining different parts of the market, with only a small amount of duplication through names like MSFT, AAPL, and AMZN.
How They Differ
DIA is an industrials ETF from SPDR, while MGK is a U.S. growth equity ETF from Vanguard. MGK is the broader fund, while DIA is the more targeted sleeve. MGK has the lower expense ratio, while DIA charges more for its exposure.
What Drives The Overlap
The overlap is driven by a relatively small set of large shared positions. The top three shared holdings account for 62.15% of the score, which means the result is heavily influenced by the biggest common weights rather than a long tail of tiny positions.
When One May Fit Better
If you want the broader portfolio building block, MGK is usually the wider choice. If you want the more focused tilt, DIA is the narrower expression. MGK has the lower expense ratio, while DIA charges more for its exposure.
Overlap Driver Snapshot
Concentration
The top three shared holdings explain 62.15% of the full overlap score.
That helps show whether the score comes from a handful of giant shared positions or from a broader mix of common holdings.
Shared Sector Tilt
Sector tags are not consistently available for the biggest shared positions in this dataset, so this comparison leans more on the specific holdings than on sector labels.
Top Shared Holdings
These are the holdings contributing the most to the overlap score between DIA and MGK.
| Holding | Name | DIA Wt. | MGK Wt. | Overlap |
|---|---|---|---|---|
| MSFT | MICROSOFT CORP | 5.23% | 9.61% | 5.23% |
| AAPL | APPLE INC | 3.36% | 11.72% | 3.36% |
| AMZN | AMAZON.COM INC | 2.76% | 4.82% | 2.76% |
| NVDA | NVIDIA CORP | 2.38% | 13.52% | 2.38% |
| V | VISA INC CLASS A SHARES | 4.05% | 1.89% | 1.89% |
| BA | BOEING CO/THE | 2.81% | 0.86% | 0.86% |
| CRM | SALESFORCE INC | 2.51% | 0.82% | 0.82% |
| MCD | MCDONALD S CORP | 4.22% | 0.59% | 0.59% |
| SHW | SHERWIN WILLIAMS CO/THE | 4.25% | 0.36% | 0.36% |
Why These ETFs Overlap
DIA is an industrials ETF from SPDR, while MGK is a U.S. growth equity ETF from Vanguard. The overlap exists because both funds allocate meaningful weight to the same holdings. In this dataset, the biggest shared drivers are MSFT, AAPL, and AMZN, which appear in both portfolios and push the overlap score higher.
Holding both DIA and MGK can make sense if you want exposure to different sleeves of the market. The overlap is small enough that both funds may still improve diversification.
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Frequently Asked Questions About DIA and MGK
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How Overlap Is Calculated
A straightforward approach used by portfolio analysts.
For every stock that appears in both ETFs, we take the smaller of the two weights. Adding up all those minimums gives the total overlap percentage. A score of 100% means the two ETFs hold the exact same stocks in the same proportions.
Want the full explanation? Read the methodology page.