Data as of .
SMHX vs SOXX: which is really different?
SMHX and SOXX hold 37% of their weight in the same names, and SOXX returned more over the year.
ETFIQ Off-Index Score: SMHX scores higher
How much of it is not the index it is sold as an alternative to?
A percentile among the 379 thematic ETFs with a holdings filing. It is a position in a set, not a rating, and neither end of it is a recommendation. All thematic ETFs ranked by it · How it is computed
37% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, SMHX and SOXX hold 37% of their money in the same securities at the same weight.
| Holding | SMHX | SOXX |
|---|---|---|
| Nvidia Corp | 23.10% | 9.21% |
| Broadcom Inc | 14.75% | 6.90% |
| Advanced Micro Devices Inc | 6.38% | 9.37% |
| Marvell Technology Inc | 5.04% | 5.21% |
| Qualcomm Inc | 5.25% | 3.33% |
| Monolithic Power Systems Inc | 3.79% | 3.06% |
| Astera Labs Inc | 4.22% | 2.27% |
| Arm Holdings Plc | 4.13% | 0.73% |
| Rambus Inc | 2.74% | 0.51% |
| Only in SMHX | Only in SOXX |
|---|---|
| Semtech Corp 4.20% | MICRON TECHNOLOGY 8.93% |
| Synopsys Inc 3.97% | INTEL CORPORATION 6.09% |
| Cadence Design Systems Inc 3.48% | TAIWAN SEMICONDUCTOR MANUFACTURING 4.74% |
| Sitime Corp 3.46% | APPLIED MATERIAL INC 4.11% |
| Lattice Semiconductor Corp 3.31% | KLA 3.90% |
| Silicon Motion Technology Corp 3.31% | ANALOG DEVICES 3.89% |
| Silicon Laboratories Inc 2.27% | LAM RESEARCH 3.75% |
| Cirrus Logic Inc 2.03% | TEXAS INSTRUMENT INC 3.75% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Sep 17, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| SMHX | SOXX | SMHX | SOXX | SMHX | SOXX | |
| 3 months | −13.9% | −16.6% | −16.2 pts | −18.8 pts | −11.4 pts | −14.1 pts |
| 6 months | +55.4% | +60.5% | +37.4 pts | +42.5 pts | +31.2 pts | +36.3 pts |
| 1 year | +48.5% | +99.9% | +31.9 pts | +83.3 pts | +26.7 pts | +78.1 pts |
| 3 years | not published | +241.0% | not published | +162.6 pts | not published | +142.8 pts |
| Since launch | +129.6% | +3732.7% | +89.6 pts | +2929.2 pts | +75.0 pts | +2042.5 pts |
| SMHX VanEck Fabless Semiconductor ETF Holds 22 stocks in semiconductors, 66% of its weight in S&P 500 companies | SOXX iShares Semiconductor ETF Holds 34 stocks in semiconductors, 74% of its weight in S&P 500 companies | |
|---|---|---|
| Issuer | VanEck | iShares |
| Theme | Semiconductors | Semiconductors |
| In the S&P 500 | 65.8% | 74.1% |
| Active share vs the S&P 500 | 87.1% | 82.3% |
| In the Nasdaq-100 | 69.9% | 65.7% |
| Holdings | 22 | 34 |
| Top ten, share of the fund | 74.8% | 62.3% |
| Expense ratio | 0.35% | 0.33% |
| Fee for the differing part | 0.40% | 0.40% |
| Total return, 1 year | +48.5% | +99.9% |
| vs the S&P 500 | +31.9 pts | +83.3 pts |
| vs the Nasdaq-100 | +26.7 pts | +78.1 pts |
| Below its high | −15.9% | −18.6% |
| Net assets | $267m | $45.4bn |
SMHX in plain words
By weight, 66% of SMHX's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 87%. The top ten holdings are 75% of the fund across 22 positions, as published by its issuer for Sep 17, 2026. Over the year to Sep 18, 2026 the fund returned +48.5% with distributions reinvested against +16.6% for the S&P 500, so a holder was ahead by 31.9 pts. It sits 15.9% below its all-time high of Jun 3, 2026.
SOXX in plain words
By weight, 74% of SOXX's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 82%. The top ten holdings are 62% of the fund across 34 positions, as published by its issuer for Sep 17, 2026. Over the year to Sep 18, 2026 the fund returned +99.9% with distributions reinvested against +16.6% for the S&P 500, so a holder was ahead by 83.3 pts. It sits 18.6% below its all-time high of Jun 22, 2026.
Questions people ask
- Do SMHX and SOXX hold the same stocks?
- By their latest filings, 37% of their books are the same securities at the same weight, which is a meaningful overlap. Overlap is the sum of the smaller weight of every security they share.
- Which is more different from the S&P 500, SMHX or SOXX?
- SMHX has 66% of its weight in S&P 500 names and SOXX has 74%, so SMHX differs more from the index.
- Which is cheaper, SMHX or SOXX?
- SMHX charges 0.35% a year and SOXX charges 0.33%, so SOXX is cheaper. Fees come from each fund's prospectus.
Other comparisons
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, SMHX against SOXX, data as of Sep 18, 2026. https://etfiq.com/compare/themes/smhx-vs-soxx Free to use with attribution; the underlying files are at Open data.