SMH is a semiconductor-focused equity ETF from VanEck, while SOXX is a semiconductor-focused equity ETF from IShares. SMH and SOXX show heavy overlap, with an estimated weighted overlap of 70.19%. They share 23 holdings in the loaded dataset, led by NVDA, AVGO, and AMD.
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Quick Answer
SMH is a semiconductor-focused equity ETF from VanEck, while SOXX is a semiconductor-focused equity ETF from IShares. SMH and SOXX show heavy overlap, with an estimated weighted overlap of 70.19%. They share 23 holdings in the loaded dataset, led by NVDA, AVGO, and AMD.
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SMH is a semiconductor-focused equity ETF from VanEck, while SOXX is a semiconductor-focused equity ETF from IShares. SMH and SOXX share a large chunk of the same portfolio weight. The overlap is driven by positions like NVDA, AVGO, and AMD, so owning both may not diversify your stock exposure as much as the fund names suggest.
SMH is a semiconductor-focused equity ETF from VanEck, while SOXX is a semiconductor-focused equity ETF from IShares. Neither fund clearly dominates on breadth, so the practical difference is more about weighting, index construction, and cost. SOXX has the lower expense ratio, while SMH 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 29.74% of the score, which means the result is heavily influenced by the biggest common weights rather than a long tail of tiny positions.
Because SMH and SOXX are closer in breadth, the better fit usually comes down to index methodology, issuer preference, and cost. SOXX has the lower expense ratio, while SMH charges more for its exposure.
Concentration
The top three shared holdings explain 29.74% 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 SMH and SOXX.
| Holding | Name | SMH Wt. | SOXX Wt. | Overlap |
|---|---|---|---|---|
| NVDA | NVIDIA Corp | 19.64% | 8.40% | 8.40% |
| AVGO | Broadcom Inc | 7.79% | 8.27% | 7.79% |
| AMD | Advanced Micro Devices Inc | 4.68% | 6.47% | 4.68% |
| AMAT | Applied Materials Inc | 4.59% | 5.84% | 4.59% |
| MU | Micron Technology Inc | 4.23% | 6.99% | 4.23% |
| INTC | Intel Corp | 4.34% | 4.13% | 4.13% |
| KLAC | KLA Corp | 4.74% | 4.12% | 4.12% |
| TXN | Texas Instruments Inc | 4.61% | 3.91% | 3.91% |
| LRCX | Lam Research Corp | 4.60% | 3.90% | 3.90% |
| QCOM | QUALCOMM Inc | 4.09% | 3.86% | 3.86% |
SMH is a semiconductor-focused equity ETF from VanEck, while SOXX is a semiconductor-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 NVDA, AVGO, and AMD, which appear in both portfolios and push the overlap score higher.
Holding both SMH and SOXX 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.