Data as of .
PSI vs SOXX: which is really different?
PSI and SOXX hold 45% of their weight in the same names, and SOXX returned more over the year.
ETFIQ Off-Index Score: PSI 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
45% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, PSI and SOXX hold 45% of their money in the same securities at the same weight.
| Holding | PSI | SOXX |
|---|---|---|
| Intel Corp | 6.04% | 9.23% |
| Advanced Micro Devices Inc | 5.69% | 9.05% |
| Micron Technology Inc | 5.30% | 8.06% |
| Analog Devices Inc | 4.89% | 3.95% |
| Texas Instruments Inc | 4.99% | 3.89% |
| KLA Corp | 4.70% | 3.84% |
| Applied Materials Inc | 4.51% | 3.69% |
| Lam Research Corp | 4.46% | 3.64% |
| Teradyne Inc | 2.69% | 3.03% |
| Microchip Technology Inc | 2.65% | 2.06% |
| ON Semiconductor Corp | 2.56% | 1.42% |
| Tower Semiconductor Ltd | 2.79% | 1.23% |
| Only in PSI | Only in SOXX |
|---|---|
| Semtech Corp 3.85% | NVIDIA 7.66% |
| Cohu Inc 3.03% | BROADCOM INC 7.35% |
| FormFactor Inc 2.92% | MARVELL TECHNOLOGY 4.39% |
| AXT Inc 2.76% | QUALCOMM 3.97% |
| Amkor Technology Inc 2.75% | SK HYNIX AMERICAN DEPOSITARY SHARE 3.32% |
| SiTime Corp 2.75% | TAIWAN SEMICONDUCTOR MANUFACTURING 3.05% |
| Wolfspeed Inc 2.69% | MONOLITHIC POWER SYSTEMS INC 3.04% |
| Diodes Inc 2.64% | NXP SEMICONDUCTORS NV 3.02% |
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 18, 2026 and Sep 19, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| PSI | SOXX | PSI | SOXX | PSI | SOXX | |
| 3 months | −21.8% | −16.6% | −24.0 pts | −18.8 pts | −19.3 pts | −14.1 pts |
| 6 months | +47.3% | +60.5% | +29.3 pts | +42.5 pts | +23.1 pts | +36.3 pts |
| 1 year | +96.1% | +99.9% | +79.5 pts | +83.3 pts | +74.3 pts | +78.1 pts |
| 3 years | +225.9% | +241.0% | +147.5 pts | +162.6 pts | +127.8 pts | +142.8 pts |
| Since launch | +3200.3% | +3732.7% | +2396.7 pts | +2929.2 pts | +1510.0 pts | +2042.5 pts |
| PSI Invesco Semiconductors ETF Holds 33 stocks in semiconductors, 48% 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 | Invesco | iShares |
| Theme | Semiconductors | Semiconductors |
| In the S&P 500 | 48.5% | 74.1% |
| Active share vs the S&P 500 | 92.2% | 82.3% |
| In the Nasdaq-100 | 43.2% | 65.7% |
| Holdings | 33 | 34 |
| Top ten, share of the fund | 47.5% | 62.3% |
| Expense ratio | 0.55% | 0.33% |
| Fee for the differing part | 0.60% | 0.40% |
| Total return, 1 year | +96.1% | +99.9% |
| vs the S&P 500 | +79.5 pts | +83.3 pts |
| vs the Nasdaq-100 | +74.3 pts | +78.1 pts |
| Below its high | −25.8% | −18.6% |
| Net assets | $2.7bn | $45.4bn |
PSI in plain words
By weight, 48% of PSI's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 92%. The top ten holdings are 48% of the fund across 33 positions, as published by its issuer for Sep 19, 2026. Over the year to Sep 18, 2026 the fund returned +96.1% with distributions reinvested against +16.6% for the S&P 500, so a holder was ahead by 79.5 pts. It sits 25.8% below its all-time high of Jun 30, 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 18, 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 PSI and SOXX hold the same stocks?
- By their latest filings, 45% 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, PSI or SOXX?
- PSI has 48% of its weight in S&P 500 names and SOXX has 74%, so PSI differs more from the index.
- Which is cheaper, PSI or SOXX?
- PSI charges 0.55% 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, PSI against SOXX, data as of Sep 18, 2026. https://etfiq.com/compare/themes/psi-vs-soxx Free to use with attribution; the underlying files are at Open data.