Data as of . Every figure is the themes desk's own, on published data.
BAI vs QTUM
16% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, BAI and QTUM hold 16% of their money in the same securities at the same weight.
| Holding | BAI | QTUM |
|---|---|---|
| Lam Research Corp | 3.99% | 1.44% |
| Intel Corp | 2.72% | 1.40% |
| Micron Technology Inc | 3.21% | 1.39% |
| Advanced Micro Devices Inc | 3.84% | 1.37% |
| Taiwan Semiconductor Manufacturing Co Lt | 4.64% | 1.25% |
| Lattice Semiconductor Corp | 1.59% | 1.24% |
| Broadcom Inc | 5.97% | 1.09% |
| Alphabet Inc | 4.26% | 1.07% |
| NVIDIA Corp | 5.43% | 1.07% |
| Palantir Technologies Inc | 1.08% | 0.96% |
| Snowflake Inc | 0.96% | 1.14% |
| Only in BAI | Only in QTUM |
|---|---|
| SK hynix Inc 4.93% | Arqit Quantum Inc 2.43% |
| Tower Semiconductor Ltd 4.22% | Horizon Quantum Holdings LTD 2.40% |
| Lumentum Holdings Inc 3.32% | Quantinuum Inc 1.58% |
| Elite Material Co Ltd 3.20% | Astera Labs Inc 1.56% |
| Fabrinet 3.13% | Applied Materials Inc 1.56% |
| Alchip Technologies Ltd 2.68% | KLA Corp 1.51% |
| Monolithic Power Systems Inc 2.52% | MKS Inc 1.51% |
| Advantest Corp 2.44% | 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 Apr 30, 2026 and Jun 30, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| BAI | QTUM | BAI | QTUM | BAI | QTUM | |
| 3 months | −2.1% | −3.0% | −6.8 pts | −7.7 pts | −4.2 pts | −5.1 pts |
| 6 months | +36.4% | +35.5% | +21.2 pts | +20.3 pts | +16.2 pts | +15.3 pts |
| 1 year | +43.1% | +58.6% | +23.1 pts | +38.7 pts | +17.5 pts | +33.0 pts |
| 3 years | n/a | +196.2% | n/a | +118.3 pts | n/a | +102.8 pts |
| Since launch | +81.2% | +538.2% | +46.5 pts | +337.0 pts | +34.9 pts | +225.3 pts |
| BAI iShares A.I. Innovation and Tech Active ETF | QTUM Defiance Quantum ETF | |
|---|---|---|
| Issuer | iShares | Defiance |
| Theme | Artificial intelligence | Quantum computing |
| In the S&P 500 | 50.0% | 35.6% |
| Active share vs the S&P 500 | 77.9% | 83.5% |
| In the Nasdaq-100 | 43.9% | 27.8% |
| Holdings | 45 | 86 |
| Top ten, share of the fund | 43.8% | 17.0% |
| Expense ratio | not published | 0.40% |
| Fee for the differing part | not published | 0.48% |
| Total return, 1 year | +43.1% | +58.6% |
| vs the S&P 500 | +23.1 pts | +38.7 pts |
| vs the Nasdaq-100 | +17.5 pts | +33.0 pts |
| Below its high | −17.8% | −12.2% |
BAI in plain words
By weight, 50% of BAI's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 78%. The top ten holdings are 44% of the fund across 45 positions, as filed for Apr 30, 2026. Over the year to Sep 4, 2026 the fund returned +43.1% with distributions reinvested against +20.0% for the S&P 500, so a holder was ahead by 23.1 pts. It sits 17.8% below its all-time high of Jun 22, 2026.
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 BAI and QTUM hold the same stocks?
- By their latest filings, 16% 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, BAI or QTUM?
- BAI has 50% of its weight in S&P 500 names and QTUM has 36%, 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, BAI against QTUM, data as of Sep 4, 2026. https://etfiq.com/compare/themes/BAI-QTUM.html Free to use with attribution; the underlying files are at Open data.