QTUM vs SMH overlap - what they share and where they differ
QTUM and SMH share 26.1% of their weight across 22 common positions, read from what each fund reported to the SEC.
Each week Ploutos reads the reported positions of the largest US equity ETFs and measures, pair by pair, the weight they share: for every stock both funds hold, the smaller of the two weights counts. Two funds tracking the same index land near 100%. A sector fund inside a broad index fund lands at roughly that sector's weight.
QTUM and SMH
26.1%
22 shared positions
QTUM
Defiance Quantum ETF
Reported positions cover 99% of the fund, 86 positions · Jun 30, 2026
Top 10: 16.9%·Holdings of QTUM
SMH
VanEck Semiconductor ETF
Reported positions cover 100% of the fund, 25 positions · Jun 30, 2026
Top 10: 70.2%·Holdings of SMH
Reported positions cover QTUM 99%, SMH 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
SMH vs QTUM side by side
QTUMDefiance Quantum ETF
86
stock positions reported to the SEC
72.4% of its weight is in 64 names SMH does not hold
SMHVanEck Semiconductor ETF
25
stock positions reported to the SEC
10.7% of its weight is in 3 names QTUM does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: SMH has 36.5 points more of it.
The figures side by side
| QTUM | SMH | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 86 | 25 |
| Weight of the ten largest | 16.9% | 70.2% |
| Largest position | ARQIT QUANTUM INC 2.4% | NVDA 17.6% |
| Held alone | 64 positions, 72.4% | 3 positions, 10.7% |
| Covered by stock positions | 99% | 100% |
Holdings they share
| Stock | In QTUM | In SMH | Counted |
|---|---|---|---|
| AMATApplied Materials Inc | 1.55% | 5.74% | 1.55% |
| KLACKLA Corp | 1.50% | 5.57% | 1.50% |
| TERTeradyne Inc | 1.48% | 1.50% | 1.48% |
| LRCXLam Research Corp | 1.43% | 5.31% | 1.43% |
| INTCIntel Corp | 1.39% | 5.15% | 1.39% |
| MUMicron Technology Inc | 1.37% | 5.67% | 1.37% |
| AMDAdvanced Micro Devices Inc | 1.36% | 5.63% | 1.36% |
| ALABAstera Labs Inc | 1.55% | 1.27% | 1.27% |
| MRVLMarvell Technology Inc | 1.25% | 4.66% | 1.25% |
| ASMLASML Holding NV | 1.22% | 5.04% | 1.22% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in QTUM
Only in SMH
Questions people ask
Is QTUM the same as SMH?
26.1% of their weight sits in the same 22 holdings. QTUM also reports ARQIT QUANTUM INC, HQ, QNT, which the other does not. SMH also reports TSM, MPWR, SWKS, which the other does not.
How is the overlap between QTUM and SMH measured?
For every stock both funds report, the smaller of the two weights counts, and the sum is the overlap. The reported positions cover 99% of QTUM and 100% of SMH, so the number cannot exceed the smaller coverage.
Which holds more, SMH or QTUM?
QTUM reports 86 stock positions and SMH reports 25. 72.4% of QTUM's weight sits in names SMH does not hold, and 10.7% of SMH's weight in names QTUM does not hold. The ten largest positions are 16.9% of QTUM and 70.2% of SMH.
How do QTUM and SMH differ by sector?
The widest gap is Technology: SMH has 36.5 points more of it. Sectors come from each holding's SIC code in its SEC record, summed by the weight the fund reports.
Where do the numbers come from?
From each fund's own N-PORT filing to the SEC, which lists every position and its weight. The comparison uses every equity position the fund reports; cash, futures and bonds are not counted, which is why a coverage figure sits next to every result. Holdings change between filings.
Add a third fund in the tool·All fund pairs
Descriptive data from public SEC filings. Nothing on this page is a recommendation to buy, sell or hold any fund or stock, and holdings change between filings.