COPX vs IYM: Holdings Overlap
COPXGlobal X Copper Miners ETF
Global X · 39 holdings · $7.8B · as of 2026-04-30
IYMiShares U.S. Basic Materials ETF
iShares · 38 holdings · $1.1B · as of 2026-04-30
How similar are COPX and IYM?
Global X Copper Miners ETF (COPX, by Global X) holds 39 positions; iShares U.S. Basic Materials ETF (IYM, by iShares) holds 38. They have 2 holdings in common, and by portfolio weight the two funds are 6.7% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 6.7%Sum of the smaller weight of each shared holding
- Shared Holdings
- 2COPX holds 39 · IYM holds 38
- Weight in Shared Holdings
- COPX 10%·IYM 9%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in COPX
37 of 39 positions (89.9% of the fund) are not held by IYM. Showing the top 30 by weight.
Sector Breakdown
| Sector | COPX | IYM |
|---|---|---|
| Materials | 77.9% | 88.4% |
| Industrials | 0.0% | 11.4% |
| Other Sectors | 0.0% | 0.0% |
| Unclassified | 21.9% | 0.0% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (22% of COPX, 0% of IYM).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| COPX | +18.0% | +23.0% | +100.2% | +32.7% | +21.6% | +20.3% | 2.19% |
| IYM | +5.2% | +23.1% | +34.0% | +13.6% | +9.2% | +10.8% | 1.24% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in COPX vs IYM →
Shared Holdings(2)
Frequently Asked Questions
How much do COPX and IYM overlap?
COPX and IYM overlap by 6.7% of portfolio weight. They share 2 holdings (COPX holds 39 positions and IYM holds 38), based on each fund's latest SEC-reported holdings.
Is it redundant to own both COPX and IYM?
The two portfolios are 6.7% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of COPX and IYM?
The largest positions held by both funds are FCX and SCCO. Together the top 2 shared positions account for 100% of the total overlap.
What does COPX own that IYM doesn't?
37 positions (89.9% of COPX) are unique to COPX, led by LUN, GLENPEN and 5713. In the other direction, 36 positions (91.0% of IYM) are unique to IYM.