COPX vs DFIV overlap - what they share and where they differ
COPX and DFIV share 4.1% of their weight across 11 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.
COPX and DFIV
4.1%
11 shared positions
COPX
Global X Copper Miners ETF
Reported positions cover 100% of the fund, 40 positions · Jul 31, 2026
Top 10: 50.3%·Holdings of COPX
DFIV
Dimensional International Value ETF
Reported positions cover 91% of the fund, 513 positions · Jul 31, 2026
Top 10: 14.6%·Holdings of DFIV
Reported positions cover COPX 100%, DFIV 91% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
DFIV vs COPX side by side
COPXGlobal X Copper Miners ETF
40
stock positions reported to the SEC
59.3% of its weight is in 29 names DFIV does not hold
DFIVDimensional International Value ETF
513
stock positions reported to the SEC
87.0% of its weight is in 502 names COPX does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Basic Materials: COPX has 28.1 points more of it.
The figures side by side
| COPX | DFIV | |
|---|---|---|
| Filing date | Jul 31, 2026 | Jul 31, 2026 |
| Stock positions reported | 40 | 513 |
| Weight of the ten largest | 50.3% | 14.6% |
| Largest position | BHP 5.5% | TTE 2.1% |
| Held alone | 29 positions, 59.3% | 502 positions, 87.0% |
| Covered by stock positions | 100% | 91% |
Holdings they share
| Stock | In COPX | In DFIV | Counted |
|---|---|---|---|
| SUGPSumitomo Metal Mining Co., Ltd. | 3.84% | 2.03% | 2.03% |
| GLENCORE PLC | 5.02% | 0.60% | 0.60% |
| NODKNittetsu Mining Co., Ltd. | 0.46% | 0.75% | 0.46% |
| TECKTeck Resources Limited | 5.39% | 0.33% | 0.33% |
| BOLIDEN AB | 4.35% | 0.25% | 0.25% |
| LUNDIN MINING CORPORATION | 4.29% | 0.21% | 0.21% |
| FIRST QUANTUM MINERALS LTD. | 5.05% | 0.12% | 0.12% |
| IVANHOE MINES LTD. | 3.24% | 0.03% | 0.03% |
| MITSUBISHI MATERIALS CORPMITSUBISHI MATERIALS CORPORATION | 1.87% | 0.03% | 0.03% |
| SANDFIRE RESOURCES LIMITED | 3.54% | 0.01% | 0.01% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in COPX
Only in DFIV
Questions people ask
Is COPX the same as DFIV?
4.1% of their weight sits in the same 11 holdings. COPX also reports BHP, HBM, SCCO, which the other does not. DFIV also reports TTE, BANCO SANTANDER, S.A., TM, which the other does not.
How is the overlap between COPX and DFIV measured?
For every stock both funds report, the smaller of the two weights counts, and the sum is the overlap. The reported positions cover 100% of COPX and 91% of DFIV, so the number cannot exceed the smaller coverage.
Which holds more, DFIV or COPX?
COPX reports 40 stock positions and DFIV reports 513. 59.3% of COPX's weight sits in names DFIV does not hold, and 87.0% of DFIV's weight in names COPX does not hold. The ten largest positions are 50.3% of COPX and 14.6% of DFIV.
How do COPX and DFIV differ by sector?
The widest gap is Basic Materials: COPX has 28.1 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.
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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.