Data as of .
ARKK vs QTUM: which is really different?
ARKK holds 38.1% of its weight in S&P 500 companies and QTUM 34.8%.
ETFIQ Off-Index Score: ARKK 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, ARKK and QTUM hold 11% of their money in the same securities at the same weight.
| Holding | ARKK | QTUM |
|---|---|---|
| PALANTIR TECHNOLOGIES INC-A | 2.65% | 1.53% |
| ADVANCED MICRO DEVICES | 2.67% | 1.36% |
| CLOUDFLARE INC - CLASS A | 1.34% | 1.66% |
| NVIDIA CORP | 2.54% | 1.30% |
| AMAZON.COM INC | 2.50% | 1.28% |
| BROADCOM INC | 1.76% | 1.16% |
| COREWEAVE INC-CL A | 2.71% | 1.11% |
| TAIWAN SEMICONDUCTOR-SP ADR | 1.02% | 1.26% |
| TERADYNE INC | 0.98% | 1.30% |
| ALPHABET INC-CL A | 0.01% | 1.13% |
| Only in ARKK | Only in QTUM |
|---|---|
| TESLA INC 9.75% | Arqit Quantum Inc 1.82% |
| SPACE EXPLORATION TECHN-CL A 6.52% | Global Unichip Corp 1.82% |
| CIRCLE INTERNET GROUP INC 5.56% | Horizon Quantum Holdings Ltd 1.81% |
| TEMPUS AI INC-CL A 4.83% | Elastic Nv 1.63% |
| CRISPR THERAPEUTICS AG 4.52% | Snowflake Inc 1.63% |
| COINBASE GLOBAL INC -CLASS A 4.47% | Hewlett Packard Enterprise Co 1.62% |
| ROBINHOOD MARKETS INC - A 4.18% | Nutanix Inc 1.58% |
| TWIST BIOSCIENCE CORP 3.29% | Radnet Inc 1.54% |
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 11, 2026 and Sep 14, 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 | +10.5% | −8.5% | +7.2 pts | −11.8 pts | +11.3 pts | −7.7 pts |
| 6 months | +19.0% | +35.3% | +3.0 pts | +19.3 pts | −1.7 pts | +14.6 pts |
| 1 year | +6.7% | +50.4% | −10.8 pts | +32.9 pts | −16.2 pts | +27.4 pts |
| 3 years | +89.9% | +204.4% | +12.0 pts | +126.5 pts | −5.2 pts | +109.3 pts |
| Since launch | +353.4% | +536.1% | −8.3 pts | +337.3 pts | −318.1 pts | +225.6 pts |
| ARKK ARK Innovation ETF Holds 47 stocks in broad innovation and megatrends, 38% of its weight in S&P 500 companies | QTUM Defiance Quantum ETF Holds 89 stocks in quantum computing, 35% of its weight in S&P 500 companies | |
|---|---|---|
| Issuer | ARK | Defiance |
| Theme | Broad innovation and megatrends | Quantum computing |
| In the S&P 500 | 38.1% | 34.8% |
| Active share vs the S&P 500 | 85.0% | 82.6% |
| In the Nasdaq-100 | 28.6% | 27.2% |
| Holdings | 47 | 89 |
| Top ten, share of the fund | 49.4% | 16.6% |
| Expense ratio | 0.75% | 0.40% |
| Fee for the differing part | 0.88% | 0.48% |
| Total return, 1 year | +6.7% | +50.4% |
| vs the S&P 500 | −10.8 pts | +32.9 pts |
| vs the Nasdaq-100 | −16.2 pts | +27.4 pts |
| Below its high | −45.9% | −12.5% |
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 49% of the fund across 47 positions, as published by its issuer for Sep 11, 2026. Over the year to Sep 11, 2026 the fund returned +6.7% with distributions reinvested against +17.5% for the S&P 500, so a holder was behind by 10.8 pts. It sits 45.9% below its all-time high of Feb 12, 2021.
QTUM in plain words
By weight, 35% of QTUM's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 83%. The top ten holdings are 17% of the fund across 89 positions, as published by its issuer for Sep 14, 2026. Over the year to Sep 11, 2026 the fund returned +50.4% with distributions reinvested against +17.5% for the S&P 500, so a holder was ahead by 32.9 pts. It sits 12.5% below its all-time high of Jun 2, 2026.
Questions people ask
- 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 35%, 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 11, 2026. https://etfiq.com/compare/themes/arkk-vs-qtum Free to use with attribution; the underlying files are at Open data.