Both funds come from IShares. IWB is an equity ETF, while IWF is a U.S. growth equity ETF. IWB and IWF show heavy overlap, with an estimated weighted overlap of 56.84%. They share 389 holdings in the loaded dataset, led by NVDA, AAPL, and MSFT.
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Quick Answer
Both funds come from IShares. IWB is an equity ETF, while IWF is a U.S. growth equity ETF. IWB and IWF show heavy overlap, with an estimated weighted overlap of 56.84%. They share 389 holdings in the loaded dataset, led by NVDA, AAPL, and MSFT.
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Both funds come from IShares. IWB is an equity ETF, while IWF is a U.S. growth equity ETF. IWB and IWF 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.
Both funds come from IShares. IWB is an equity ETF, while IWF is a U.S. growth equity ETF. Neither fund clearly dominates on breadth, so the practical difference is more about weighting, index construction, and cost. IWB has the lower expense ratio, while IWF charges more for its exposure.
The overlap is driven by a relatively small set of large shared positions. The top three shared holdings account for 30.78% of the score, which means the result is heavily influenced by the biggest common weights rather than a long tail of tiny positions.
Because IWB and IWF are closer in breadth, the better fit usually comes down to index methodology, issuer preference, and cost. IWB has the lower expense ratio, while IWF charges more for its exposure.
Concentration
The top three shared holdings explain 30.78% 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.
These are the holdings contributing the most to the overlap score between IWB and IWF.
| Holding | Name | IWB Wt. | IWF Wt. | Overlap |
|---|---|---|---|---|
| NVDA | NVIDIA CORPORATION | 6.81% | 12.92% | 6.81% |
| AAPL | APPLE INC. | 6.10% | 11.64% | 6.10% |
| MSFT | MICROSOFT CORPORATION | 4.58% | 8.82% | 4.58% |
| AMZN | AMAZON.COM, INC. | 3.33% | 4.66% | 3.33% |
| GOOGL | ALPHABET INC. | 2.79% | 3.54% | 2.79% |
| AVGO | BROADCOM INC. | 2.39% | 4.79% | 2.39% |
| GOOG | ALPHABET INC. | 2.27% | 2.87% | 2.27% |
| META | META PLATFORMS, INC. | 2.08% | 3.46% | 2.08% |
| TSLA | TESLA, INC. | 1.75% | 3.55% | 1.75% |
| LLY | ELI LILLY AND COMPANY | 1.23% | 2.66% | 1.23% |
Both funds come from IShares. IWB is an equity ETF, while IWF is a U.S. growth 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 IWB and IWF 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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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.