Data as of . Every figure is the themes desk's own, on published data.
ARKK vs QTUM
ARK Innovation ETF and Defiance Quantum ETF, side by side on the themes desk.
11% of the two portfolios are the same securities at the same weight.
Open the live comparison on ETFIQ| ARKK ARK Innovation ETF | QTUM Defiance Quantum ETF | |
|---|---|---|
| Issuer | ARK | Defiance |
| Theme | Broad innovation and megatrends | Quantum computing |
| In the S&P 500 | 37.9% | 35.6% |
| Active share vs the S&P 500 | 85.4% | 83.5% |
| In the Nasdaq-100 | 28.4% | 27.8% |
| Holdings | 47 | 86 |
| Top ten, share of the fund | 50.3% | 17.0% |
| Expense ratio | 0.75% | 0.40% |
| Fee for the differing part | 0.88% | 0.48% |
| Total return, 1 year | +14.9% | +58.6% |
| vs the S&P 500 | −5.0 pts | +38.7 pts |
| vs the Nasdaq-100 | −10.7 pts | +33.0 pts |
| Below its high | −44.2% | −12.2% |
ARKK in plain words
By weight, 38% of ARKK's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 85%. The top ten holdings are 50% of the fund across 47 positions, as filed for Sep 4, 2026. Over the year to Sep 4, 2026 the fund returned +14.9% with distributions reinvested against +20.0% for the S&P 500, so a holder was behind by 5.0 pts. It sits 44.2% below its all-time high of Feb 12, 2021.
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.
Questions people ask
- Do ARKK and QTUM hold the same stocks?
- By their latest filings, 11% of their books are the same securities at the same weight, which is mostly different names. Overlap is the sum of the smaller weight of every security they share.
- Which is more different from the S&P 500, ARKK or QTUM?
- ARKK has 38% of its weight in S&P 500 names and QTUM has 36%, so ARKK differs more from the index.
- Which is cheaper, ARKK or QTUM?
- ARKK charges 0.75% a year and QTUM charges 0.40%, so QTUM is cheaper. Fees come from each fund's prospectus.
Other comparisons
Cite this page. ETFIQ, ARKK against QTUM, data as of Sep 4, 2026. https://etfiq.com/compare/themes/ARKK-QTUM.html Free to use with attribution; the underlying files are at Open data.
ETFIQ is an independent publisher of exchange-traded fund data. It is not a fund issuer, broker-dealer or investment adviser, and it makes no recommendations; every figure here is stated arithmetic on published data. Standards and sources