IWR is a mid-cap U.S. equity ETF from IShares, while RSP is an equal-weight U.S. equity ETF from Invesco. IWR and RSP show meaningful overlap, with an estimated weighted overlap of 46.66%. They share 293 holdings in the loaded dataset, led by SNDK, WDC, and CIEN.
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IWR is a mid-cap U.S. equity ETF from IShares, while RSP is an equal-weight U.S. equity ETF from Invesco. IWR and RSP show meaningful overlap, with an estimated weighted overlap of 46.66%. They share 293 holdings in the loaded dataset, led by SNDK, WDC, and CIEN.
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IWR is a mid-cap U.S. equity ETF from IShares, while RSP is an equal-weight U.S. equity ETF from Invesco. IWR and RSP overlap enough to matter, but they still bring different exposures to a portfolio. The overlap is concentrated in holdings such as SNDK, WDC, and CIEN, which explains why the score lands at 46.66%.
IWR is a mid-cap U.S. equity ETF from IShares, while RSP is an equal-weight U.S. equity ETF from Invesco. RSP is the broader fund, while IWR is the more targeted sleeve. IWR has the lower expense ratio, while RSP 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 1.99% of the score, which means the result is heavily influenced by the biggest common weights rather than a long tail of tiny positions.
If you want the broader portfolio building block, RSP is usually the wider choice. If you want the more focused tilt, IWR is the narrower expression. IWR has the lower expense ratio, while RSP charges more for its exposure.
Concentration
The top three shared holdings explain 1.99% 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 IWR and RSP.
| Holding | Name | IWR Wt. | RSP Wt. | Overlap |
|---|---|---|---|---|
| SNDK | Sandisk Corp. | 0.72% | 0.32% | 0.32% |
| WDC | Western Digital Corp. | 0.73% | 0.31% | 0.31% |
| CIEN | Ciena Corp. | 0.43% | 0.30% | 0.30% |
| MPWR | Monolithic Power Systems, Inc. | 0.40% | 0.29% | 0.29% |
| MCHP | Microchip Technology, Inc. | 0.27% | 0.27% | 0.27% |
| LITE | Lumentum Holdings, Inc. | 0.39% | 0.26% | 0.26% |
| NUE | Nucor Corp. | 0.31% | 0.25% | 0.25% |
| HPE | Hewlett Packard Enterprise Co. | 0.25% | 0.26% | 0.25% |
| FIX | Comfort Systems USA, Inc. | 0.38% | 0.25% | 0.25% |
| PWR | Quanta Services, Inc. | 0.64% | 0.25% | 0.25% |
IWR is a mid-cap U.S. equity ETF from IShares, while RSP is an equal-weight U.S. equity ETF from Invesco. The overlap exists because both funds allocate meaningful weight to the same holdings. In this dataset, the biggest shared drivers are SNDK, WDC, and CIEN, which appear in both portfolios and push the overlap score higher.
Holding both IWR and RSP can still be reasonable, but you should expect some duplication. The decision comes down to whether the non-overlapping parts of each ETF are important enough for your strategy.
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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.