Data as of Sep 4, 2026. Both funds on the fields they both publish, from the same sources.
QTUM vs VOO
Defiance Quantum ETF and Vanguard 500 Index Fund.
What they hold in common
By the books each fund has filed, QTUM and VOO hold 16% of their money in the same securities at the same weight.
| Holding | QTUM | VOO |
|---|---|---|
| Micron Technology Inc | 1.39% | 2.02% |
| Advanced Micro Devices Inc | 1.37% | 1.47% |
| Broadcom Inc | 1.09% | 2.78% |
| Alphabet Inc | 1.07% | 3.26% |
| Amazon.com Inc | 1.07% | 3.63% |
| NVIDIA Corp | 1.07% | 7.53% |
| Intel Corp | 1.40% | 1.03% |
| Microsoft Corp | 1.00% | 4.31% |
| Applied Materials Inc | 1.56% | 0.89% |
| Lam Research Corp | 1.44% | 0.84% |
| Cisco Systems Inc | 1.06% | 0.72% |
| KLA Corp | 1.51% | 0.61% |
| Only in QTUM | Only in VOO |
|---|---|
| Arqit Quantum Inc 2.43% | Apple Inc 6.61% |
| Horizon Quantum Holdings LTD 2.40% | Alphabet Inc 2.60% |
| Quantinuum Inc 1.58% | Meta Platforms Inc 1.92% |
| Astera Labs Inc 1.56% | Tesla Inc 1.84% |
| MKS Inc 1.51% | Eli Lilly & Co 1.48% |
| Onto Innovation Inc 1.50% | Berkshire Hathaway Inc 1.43% |
| Nebius Group NV 1.40% | JPMorgan Chase & Co 1.26% |
| BTQ Technologies Corp 1.38% | Johnson & Johnson 0.95% |
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.
| QTUM Defiance Quantum ETF | VOO Vanguard 500 Index Fund | |
|---|---|---|
| Where it sits | Themes desk | Core fund |
| Issuer | Defiance | Vanguard |
| What it is | Quantum computing | S&P 500 |
| Total return, 1 year | +58.6% | +20.1% |
| S&P 500 over the same days | +20.0% | +20.0% |
| Gap to the S&P 500 | +38.7 pts | +0.1 pts |
| Expense ratio | 0.40% | 0.03% |
| Already in the S&P 500 | 35.6% | 100.0% |
| Holdings | 86 | 506 |
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.
VOO in plain words
VOO is a index equity fund tracking S&P 500. Over the year to Sep 4, 2026 it returned +20.1% with distributions reinvested, against +20.0% for the S&P 500 and +25.6% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. By its holdings filed for Jun 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 506 positions, with the top ten at 36.5%.
Questions people ask
- Which returned more over the last year, QTUM or VOO?
- In the year to Sep 4, 2026, with distributions reinvested, QTUM returned +58.6% and VOO returned +20.1%, so QTUM returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, QTUM or VOO?
- QTUM charges 0.40% a year and VOO charges 0.03%, so VOO is cheaper. Fees come from each fund's prospectus.
- How much do QTUM and VOO overlap with the S&P 500?
- By their latest filed holdings, 36% of QTUM and 100% of VOO by weight is stocks the S&P 500 already holds. Between the two funds, 16% of their books are the same securities at the same weight.
- Are QTUM and VOO the same kind of fund?
- No. QTUM is a thematic ETF and VOO is an index ETF, so they are built for different jobs. The table compares what both publish: return, cost and what each actually holds.
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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 VOO, data as of Sep 4, 2026. https://etfiq.com/compare/any/QTUM-VOO.html Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources