DIA vs IGV Overlap
DIA is an industrials ETF from SPDR, while IGV is a technology-focused equity ETF from IShares. DIA and IGV show limited overlap, with an estimated weighted overlap of 7.74%. They share 2 holdings in the loaded dataset, led by MSFT and CRM.
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Quick Answer
DIA is an industrials ETF from SPDR, while IGV is a technology-focused equity ETF from IShares. DIA and IGV show limited overlap, with an estimated weighted overlap of 7.74%. They share 2 holdings in the loaded dataset, led by MSFT and CRM.
- 7.74% weighted overlap across 2 shared holdings.
- The top three shared holdings explain 99.97% of the measured overlap.
- IGV 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
- IGV 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 IGV is a technology-focused equity ETF from IShares. DIA and IGV 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 and CRM.
How They Differ
DIA is an industrials ETF from SPDR, while IGV is a technology-focused equity ETF from IShares. IGV is the broader fund, while DIA is the more targeted sleeve. DIA has the lower expense ratio, while IGV 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 99.97% 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, IGV is usually the wider choice. If you want the more focused tilt, DIA is the narrower expression. DIA has the lower expense ratio, while IGV charges more for its exposure.
Overlap Driver Snapshot
Concentration
The top three shared holdings explain 99.97% 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 IGV.
| Holding | Name | DIA Wt. | IGV Wt. | Overlap |
|---|---|---|---|---|
| MSFT | MICROSOFT CORP | 5.23% | 9.22% | 5.23% |
| CRM | SALESFORCE INC | 2.51% | 7.29% | 2.51% |
Why These ETFs Overlap
DIA is an industrials ETF from SPDR, while IGV is a technology-focused equity ETF from IShares. The overlap exists because both funds allocate meaningful weight to the same holdings. In this dataset, the biggest shared drivers are MSFT and CRM, which appear in both portfolios and push the overlap score higher.
Holding both DIA and IGV 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 IGV
What is the overlap between DIA and IGV?+
How many holdings do DIA and IGV share?+
Is the DIA and IGV overlap high?+
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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.