Data as of . Every figure is the themes desk's own, on published data.
ARKK vs QTUM
11% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, ARKK and QTUM hold 11% of their money in the same securities at the same weight.
| Holding | ARKK | QTUM |
|---|---|---|
| ADVANCED MICRO DEVICES | 2.44% | 1.37% |
| CLOUDFLARE INC - CLASS A | 1.16% | 1.20% |
| COREWEAVE INC-CL A | 2.45% | 1.11% |
| BROADCOM INC | 1.66% | 1.09% |
| AMAZON.COM INC | 2.45% | 1.07% |
| NVIDIA CORP | 2.54% | 1.07% |
| PALANTIR TECHNOLOGIES INC-A | 2.88% | 0.96% |
| TAIWAN SEMICONDUCTOR-SP ADR | 0.95% | 1.25% |
| TERADYNE INC | 0.85% | 1.49% |
| ALPHABET INC-CL A | 0.38% | 1.07% |
| Only in ARKK | Only in QTUM |
|---|---|
| TESLA INC 9.62% | Arqit Quantum Inc 2.43% |
| SPACE EXPLORATION TECHN-CL A 6.28% | Horizon Quantum Holdings LTD 2.40% |
| CIRCLE INTERNET GROUP INC 6.06% | Quantinuum Inc 1.58% |
| TEMPUS AI INC-CL A 5.17% | Astera Labs Inc 1.56% |
| COINBASE GLOBAL INC -CLASS A 4.76% | Applied Materials Inc 1.56% |
| CRISPR THERAPEUTICS AG 4.55% | KLA Corp 1.51% |
| ROBINHOOD MARKETS INC - A 4.28% | MKS Inc 1.51% |
| SHOPIFY INC - CLASS A 3.37% | Onto Innovation Inc 1.50% |
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 and Sep 4, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| ARKK | QTUM | ARKK | QTUM | ARKK | QTUM | |
| 3 months | +15.8% | −3.0% | +11.1 pts | −7.7 pts | +13.7 pts | −5.1 pts |
| 6 months | +19.1% | +35.5% | +3.9 pts | +20.3 pts | −1.1 pts | +15.3 pts |
| 1 year | +14.9% | +58.6% | −5.0 pts | +38.7 pts | −10.7 pts | +33.0 pts |
| 3 years | +97.5% | +196.2% | +19.6 pts | +118.3 pts | +4.1 pts | +102.8 pts |
| Since launch | +367.8% | +538.2% | +2.5 pts | +337.0 pts | −308.1 pts | +225.3 pts |
| 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
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, 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.