IVW vs VB Overlap
IVW is a U.S. growth equity ETF from IShares, while VB is a small-cap U.S. equity ETF from Vanguard. IVW and VB show limited overlap, with an estimated weighted overlap of 1.34%. They share 14 holdings in the loaded dataset, led by SNDK, FIX, and CIEN.
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Quick Answer
IVW is a U.S. growth equity ETF from IShares, while VB is a small-cap U.S. equity ETF from Vanguard. IVW and VB show limited overlap, with an estimated weighted overlap of 1.34%. They share 14 holdings in the loaded dataset, led by SNDK, FIX, and CIEN.
- 1.34% weighted overlap across 14 shared holdings.
- The top three shared holdings explain 45.97% of the measured overlap.
- IVW is the broader fund, while VB 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
- IVW holdings
- Mar 12, 2026
- VB holdings
- Mar 12, 2026
- Overlap computed
- Mar 15, 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
IVW is a U.S. growth equity ETF from IShares, while VB is a small-cap U.S. equity ETF from Vanguard. IVW and VB 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 SNDK, FIX, and CIEN.
How They Differ
IVW is a U.S. growth equity ETF from IShares, while VB is a small-cap U.S. equity ETF from Vanguard. IVW is the broader fund, while VB is the more targeted sleeve. VB has the lower expense ratio, while IVW 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 45.97% 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, IVW is usually the wider choice. If you want the more focused tilt, VB is the narrower expression. VB has the lower expense ratio, while IVW charges more for its exposure.
Overlap Driver Snapshot
Concentration
The top three shared holdings explain 45.97% 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 IVW and VB.
| Holding | Name | IVW Wt. | VB Wt. | Overlap |
|---|---|---|---|---|
| SNDK | SANDISK CORP | 0.30% | 1.06% | 0.30% |
| FIX | COMFORT SYSTEMS USA INC | 0.16% | 0.54% | 0.16% |
| CIEN | CIENA CORP | 0.16% | 0.47% | 0.16% |
| EME | EMCOR GROUP INC | 0.11% | 0.43% | 0.11% |
| TPR | TAPESTRY INC | 0.10% | 0.34% | 0.10% |
| TER | TERADYNE INC | 0.09% | 0.25% | 0.09% |
| NRG | NRG ENERGY INC | 0.08% | 0.39% | 0.08% |
| FSLR | FIRST SOLAR INC | 0.07% | 0.15% | 0.07% |
| PODD | INSULET CORP | 0.06% | 0.12% | 0.06% |
| JBL | JABIL INC | 0.05% | 0.32% | 0.05% |
Why These ETFs Overlap
IVW is a U.S. growth equity ETF from IShares, while VB is a small-cap U.S. 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 SNDK, FIX, and CIEN, which appear in both portfolios and push the overlap score higher.
Holding both IVW and VB 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 IVW and VB
What is the overlap between IVW and VB?+
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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.