Data as of . Every figure is the themes desk's own, on published data.
QTUM vs SOXX
26% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, QTUM and SOXX hold 26% of their money in the same securities at the same weight.
| Holding | QTUM | SOXX |
|---|---|---|
| Astera Labs Inc | 1.56% | 3.02% |
| Applied Materials Inc | 1.56% | 5.78% |
| KLA Corp | 1.51% | 5.65% |
| Teradyne Inc | 1.49% | 3.37% |
| Lam Research Corp | 1.44% | 4.90% |
| Intel Corp | 1.40% | 6.34% |
| Micron Technology Inc | 1.39% | 8.55% |
| Advanced Micro Devices Inc | 1.37% | 8.10% |
| Marvell Technology Inc | 1.26% | 5.23% |
| TSMC | 1.25% | 4.27% |
| Texas Instruments Inc | 1.13% | 3.51% |
| Microchip Technology Inc | 1.11% | 2.17% |
| Only in QTUM | Only in SOXX |
|---|---|
| Arqit Quantum Inc 2.43% | NXP Semiconductors NV 3.15% |
| Horizon Quantum Holdings LTD 2.40% | Monolithic Power Systems, Inc. 2.93% |
| Quantinuum Inc 1.58% | ASML Holding NV 2.31% |
| MKS Inc 1.51% | Credo Technology Group Holding Ltd. 2.01% |
| Onto Innovation Inc 1.50% | Entegris, Inc. 1.22% |
| Nebius Group NV 1.40% | ASE Technology Holding Co. Ltd. 1.22% |
| BTQ Technologies Corp 1.38% | MACOM Technology Solutions Holdings, Inc 1.18% |
| Tokyo Electron Ltd 1.32% | United Microelectronics Corp. 1.02% |
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 as filed for Jun 30, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| QTUM | SOXX | QTUM | SOXX | QTUM | SOXX | |
| 3 months | −3.0% | −3.6% | −7.7 pts | −8.3 pts | −5.1 pts | −5.7 pts |
| 6 months | +35.5% | +60.9% | +20.3 pts | +45.7 pts | +15.3 pts | +40.7 pts |
| 1 year | +58.6% | +113.9% | +38.7 pts | +93.9 pts | +33.0 pts | +88.3 pts |
| 3 years | +196.2% | +210.8% | +118.3 pts | +132.9 pts | +102.8 pts | +117.4 pts |
| Since launch | +538.2% | +3635.3% | +337.0 pts | +2823.9 pts | +225.3 pts | +1951.2 pts |
| QTUM Defiance Quantum ETF | SOXX iShares Semiconductor ETF | |
|---|---|---|
| Issuer | Defiance | iShares |
| Theme | Quantum computing | Semiconductors |
| In the S&P 500 | 35.6% | 80.8% |
| Active share vs the S&P 500 | 83.5% | 81.6% |
| In the Nasdaq-100 | 27.8% | 78.4% |
| Holdings | 86 | 30 |
| Top ten, share of the fund | 17.0% | 61.7% |
| Expense ratio | 0.40% | not published |
| Fee for the differing part | 0.48% | not published |
| Total return, 1 year | +58.6% | +113.9% |
| vs the S&P 500 | +38.7 pts | +93.9 pts |
| vs the Nasdaq-100 | +33.0 pts | +88.3 pts |
| Below its high | −12.2% | −20.6% |
QTUM in plain words
By weight, 36% of QTUM's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 84%. The top ten holdings are 17% of the fund across 86 positions, as filed for Jun 30, 2026. Over the year to Sep 4, 2026 the fund returned +58.6% with distributions reinvested against +20.0% for the S&P 500, so a holder was ahead by 38.7 pts. It sits 12.2% below its all-time high of Jun 2, 2026.
SOXX in plain words
By weight, 81% 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 30 positions, as filed for Jun 30, 2026. Over the year to Sep 4, 2026 the fund returned +113.9% with distributions reinvested against +20.0% for the S&P 500, so a holder was ahead by 93.9 pts. It sits 20.6% below its all-time high of Jun 22, 2026.
Questions people ask
- Do QTUM and SOXX hold the same stocks?
- By their latest filings, 26% 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, QTUM or SOXX?
- QTUM has 36% of its weight in S&P 500 names and SOXX has 81%, so QTUM differs more from the index.
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, QTUM against SOXX, data as of Sep 4, 2026. https://etfiq.com/compare/themes/QTUM-SOXX.html Free to use with attribution; the underlying files are at Open data.