GUNR vs IYM: Holdings Overlap
GUNRFlexShares Morningstar Global Upstream Natural Resources Index Fund
FlexShares · 148 holdings · $7.2B · as of 2026-04-30
IYMiShares U.S. Basic Materials ETF
iShares · 38 holdings · $1.1B · as of 2026-04-30
How similar are GUNR and IYM?
FlexShares Morningstar Global Upstream Natural Resources Index Fund (GUNR, by FlexShares) holds 148 positions; iShares U.S. Basic Materials ETF (IYM, by iShares) holds 38. They have 5 holdings in common, and by portfolio weight the two funds are 6.1% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 6.1%Sum of the smaller weight of each shared holding
- Shared Holdings
- 5GUNR holds 148 · IYM holds 38
- Weight in Shared Holdings
- GUNR 6%·IYM 23%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 GUNR
143 of 148 positions (93.6% of the fund) are not held by IYM. Showing the top 30 by weight.
Sector Breakdown
| Sector | GUNR | IYM |
|---|---|---|
| Materials | 43.0% | 88.4% |
| Energy | 32.2% | 0.0% |
| Industrials | 0.6% | 11.4% |
| Consumer Staples | 8.4% | 0.0% |
| Utilities | 4.2% | 0.0% |
| Other Sectors | 0.9% | 0.0% |
| Unclassified | 10.6% | 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 (11% of GUNR, 0% of IYM).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| GUNR | +6.1% | +16.9% | +32.8% | +11.8% | +10.9% | +10.3% | 2.30% |
| 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 GUNR vs IYM →
Shared Holdings(5)
The top 5 shared positions account for 100% of the overlap, led by NEM, CF and FCX.
Frequently Asked Questions
How much do GUNR and IYM overlap?
GUNR and IYM overlap by 6.1% of portfolio weight. They share 5 holdings (GUNR holds 148 positions and IYM holds 38), based on each fund's latest SEC-reported holdings.
Is it redundant to own both GUNR and IYM?
The two portfolios are 6.1% 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 GUNR and IYM?
The largest positions held by both funds are NEM, CF, FCX, MOS and RGLD. Together the top 5 shared positions account for 100% of the total overlap.
What does GUNR own that IYM doesn't?
143 positions (93.6% of GUNR) are unique to GUNR, led by CTVA, XOM and NTR. In the other direction, 33 positions (76.9% of IYM) are unique to IYM.