IVW vs IWB Overlap
Both funds come from IShares. IVW is a U.S. growth equity ETF, while IWB is an equity ETF. IVW and IWB show heavy overlap, with an estimated weighted overlap of 59.72%. They share 136 holdings in the loaded dataset, led by NVDA, AAPL, and MSFT.
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Quick Answer
Both funds come from IShares. IVW is a U.S. growth equity ETF, while IWB is an equity ETF. IVW and IWB show heavy overlap, with an estimated weighted overlap of 59.72%. They share 136 holdings in the loaded dataset, led by NVDA, AAPL, and MSFT.
- 59.72% weighted overlap across 136 shared holdings.
- The top three shared holdings explain 29.95% of the measured overlap.
- IVW is the broader fund, while IWB is more targeted.
- The overlap is mostly explained by the top shared positions rather than sector labels alone.
- Holding both may add less diversification than the fund names imply.
Data Freshness
- IVW holdings
- Mar 12, 2026
- IWB 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
Both funds come from IShares. IVW is a U.S. growth equity ETF, while IWB is an equity ETF. IVW and IWB share a large chunk of the same portfolio weight. The overlap is driven by positions like NVDA, AAPL, and MSFT, so owning both may not diversify your stock exposure as much as the fund names suggest.
How They Differ
Both funds come from IShares. IVW is a U.S. growth equity ETF, while IWB is an equity ETF. IVW is the broader fund, while IWB is the more targeted sleeve. IWB 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 29.95% 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, IWB is the narrower expression. IWB has the lower expense ratio, while IVW charges more for its exposure.
Overlap Driver Snapshot
Concentration
The top three shared holdings explain 29.95% 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 IWB.
| Holding | Name | IVW Wt. | IWB Wt. | Overlap |
|---|---|---|---|---|
| NVDA | NVIDIA CORP | 14.73% | 6.95% | 6.95% |
| AAPL | APPLE INC | 6.32% | 6.11% | 6.11% |
| MSFT | MICROSOFT CORP | 9.89% | 4.83% | 4.83% |
| AMZN | AMAZON COM INC | 3.63% | 3.30% | 3.30% |
| GOOGL | ALPHABET INC CLASS A | 5.86% | 2.87% | 2.87% |
| AVGO | BROADCOM INC | 5.31% | 2.54% | 2.54% |
| GOOG | ALPHABET INC CLASS C | 4.68% | 2.33% | 2.33% |
| META | META PLATFORMS INC CLASS A | 4.67% | 2.29% | 2.29% |
| TSLA | TESLA INC | 2.28% | 1.81% | 1.81% |
| BRK-B | BERKSHIRE HATHAWAY INC CLASS B | 2.97% | 1.46% | 1.46% |
Why These ETFs Overlap
Both funds come from IShares. IVW is a U.S. growth equity ETF, while IWB is an equity ETF. The overlap exists because both funds allocate meaningful weight to the same holdings. In this dataset, the biggest shared drivers are NVDA, AAPL, and MSFT, which appear in both portfolios and push the overlap score higher.
Holding both IVW and IWB may add less diversification than you expect. Many investors would choose the ETF that best matches their goal and avoid paying for duplicate exposure.
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Frequently Asked Questions About IVW and IWB
What is the overlap between IVW and IWB?+
How many holdings do IVW and IWB share?+
Is the IVW and IWB overlap high?+
Why do IVW and IWB overlap?+
Which ETF is broader, IVW or IWB?+
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.