Data as of .
SMH vs SOXX: which is really different?
SMH holds 82.3% of its weight in S&P 500 companies and SOXX 73.8%.
ETFIQ Off-Index Score: SOXX scores higher
How much of it is not the index it is sold as an alternative to?
A percentile among the 371 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
What they hold in common
By the books each fund has filed, SMH and SOXX hold 73% of their money in the same securities at the same weight.
| Holding | SMH | SOXX |
|---|---|---|
| Nvidia Corp | 22.45% | 9.22% |
| Broadcom Inc | 5.91% | 7.20% |
| Advanced Micro Devices Inc | 5.74% | 8.70% |
| Micron Technology Inc | 5.65% | 8.97% |
| Taiwan Semiconductor Manufacturing Co L | 9.78% | 4.74% |
| Intel Corp | 4.34% | 5.64% |
| Applied Materials Inc | 4.24% | 4.50% |
| Lam Research Corp | 4.29% | 4.17% |
| Marvell Technology Inc | 4.17% | 4.93% |
| Analog Devices Inc | 4.26% | 3.89% |
| Kla Corp | 3.84% | 4.11% |
| Texas Instruments Inc | 4.25% | 3.77% |
| Only in SMH | Only in SOXX |
|---|---|
| Cadence Design Systems Inc 1.91% | CREDO TECHNOLOGY GROUP HOLDING LTD 1.47% |
| Synopsys Inc 1.87% | ASE TECHNOLOGY HOLDING ADR REPRESE 1.33% |
| ENTEGRIS INC 1.15% | |
| MACOM TECHNOLOGY SOLUTIONS 1.04% | |
| UNITED MICRO ELECTRONICS ADR REP 1.02% | |
| NOVA 0.64% | |
| RAMBUS 0.51% | |
| BLK CSH FND TREASURY SL AGENCY 0.04% |
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 10, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| SMH | SOXX | SMH | SOXX | SMH | SOXX | |
| 3 months | −8.3% | −11.6% | −11.6 pts | −14.9 pts | −7.5 pts | −10.8 pts |
| 6 months | +46.8% | +59.3% | +30.8 pts | +43.2 pts | +26.1 pts | +38.6 pts |
| 1 year | +87.6% | +107.5% | +70.1 pts | +90.0 pts | +64.7 pts | +84.5 pts |
| 3 years | +285.8% | +229.6% | +207.9 pts | +151.7 pts | +190.7 pts | +134.5 pts |
| Since launch | +5026.7% | +3687.1% | +4222.3 pts | +2882.7 pts | +3352.8 pts | +2013.2 pts |
| SMH VanEck Semiconductor ETF Holds 25 stocks in semiconductors, 82% of its weight in S&P 500 companies | SOXX iShares Semiconductor ETF Holds 32 stocks in semiconductors, 74% of its weight in S&P 500 companies | |
|---|---|---|
| Issuer | VanEck | iShares |
| Theme | Semiconductors | Semiconductors |
| In the S&P 500 | 82.3% | 73.8% |
| Active share vs the S&P 500 | 80.6% | 82.3% |
| In the Nasdaq-100 | 80.2% | 65.2% |
| Holdings | 25 | 32 |
| Top ten, share of the fund | 71.7% | 62.2% |
| Expense ratio | 0.35% | 0.33% |
| Fee for the differing part | 0.43% | 0.40% |
| Total return, 1 year | +87.6% | +107.5% |
| vs the S&P 500 | +70.1 pts | +90.0 pts |
| vs the Nasdaq-100 | +64.7 pts | +84.5 pts |
| Below its high | −15.0% | −19.5% |
SMH in plain words
By weight, 82% of SMH's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 81%. The top ten holdings are 72% of the fund across 25 positions, as published by its issuer for Sep 10, 2026. Over the year to Sep 11, 2026 the fund returned +87.6% with distributions reinvested against +17.5% for the S&P 500, so a holder was ahead by 70.1 pts. It sits 15.0% below its all-time high of Jun 22, 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 32 positions, as published by its issuer for Sep 10, 2026. Over the year to Sep 11, 2026 the fund returned +107.5% with distributions reinvested against +17.5% for the S&P 500, so a holder was ahead by 90.0 pts. It sits 19.5% below its all-time high of Jun 22, 2026.
Questions people ask
- Which is more different from the S&P 500, SMH or SOXX?
- SMH has 82% of its weight in S&P 500 names and SOXX has 74%, so SOXX differs more from the index.
- Which is cheaper, SMH or SOXX?
- SMH 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, SMH against SOXX, data as of Sep 11, 2026. https://etfiq.com/compare/themes/smh-vs-soxx Free to use with attribution; the underlying files are at Open data.