COPX vs DRAM ETF holdings comparison
Global X Copper Miners ETF (COPX) · Roundhill Memory ETF (DRAM)
COPX and DRAM overlap by 0% by portfolio weight. The remaining 100.0 percentage points are not counted as shared holdings weight by this calculation. They share 0 stocks;
The holdings dates differ. This can slightly understate overlap for funds tracking similar indexes.
What this means
COPX and DRAM share a smaller portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "low holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Overlap by weight sums the smaller of the two funds' weights for every stock they both hold. It answers "how much of my money is in the same stocks either way?" See methodology.
This comparison covers normalized equity positions represented in the dataset. Cash, derivatives, options, structured notes, and other non-equity assets are not included, so the result is not a complete comparison of every asset or risk in either fund.
Top shared holdings
No shared stocks were found in the normalized issuer holdings used for this comparison. That result applies only to the holdings files and dates shown above.
Holdings only in COPX or DRAM
COPX has 39 fund-only positions representing approximately 99.8 percentage points of reported exposure; DRAM has 16 fund-only positions representing approximately 100.1 percentage points of reported exposure. These are positions whose normalized security identifiers appear in one issuer file but not the other.
Largest positions only in COPX
| Company | Ticker | Weight |
|---|---|---|
| Lundin Mining Corporation | LUNMF | 6.06% |
| GLENCORE PLC | N/A | 5.99% |
| Sumitomo Metal Mining Co., Ltd. | N/A | 5.97% |
| KGHM POLSKA MIEDZ SPOLKA AKCYJNA | N/A | 5.81% |
| FREEPORT-MCMORAN INC. | FCX | 5.04% |
| Hudbay Minerals Inc. | HBM | 4.94% |
| BHP GROUP LIMITED | N/A | 4.91% |
| ANTOFAGASTA PLC | N/A | 4.86% |
| Teck Resources Limited | TECK | 4.85% |
| SOUTHERN COPPER CORPORATION | SCCO | 4.84% |
Largest positions only in DRAM
| Company | Ticker | Weight |
|---|---|---|
| Samsung Electronics Co Ltd | 005930 | 25.32% |
| Micron Technology Inc | MU | 25.10% |
| Sk Hynix Inc | 000660 | 21.93% |
| Cxmt Corporation | N/A | 4.71% |
| Seagate Technology Holdings Plc | STX | 4.70% |
| Sandisk Corp | SNDK | 4.37% |
| Western Digital Corp | WDC | 4.03% |
| Kioxia Holdings Corp | 285A | 3.17% |
| Nanya Technology Corp | 2408 | 2.66% |
| Winbond Electronics Corp | 2344 | 1.25% |
FAQ
How much do COPX and DRAM overlap?
COPX and DRAM have 0% overlap by weight, sharing 0 equity positions (out of 39 in COPX and 16 in DRAM). The official holdings files used are dated 2026-04-30 for COPX and 2026-08-27 for DRAM.
What does 0% overlap mean?
COPX and DRAM share a smaller portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "low holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Which stocks do COPX and DRAM both hold?
COPX and DRAM have no shared stock positions in the normalized issuer holdings used for this comparison.
What holdings are different between COPX and DRAM?
COPX has 39 positions not found in DRAM, while DRAM has 16 positions not found in COPX. The largest fund-only positions and their weights are shown on this page.