GDX vs IYM overlap - what they share and where they differ
GDX and IYM share 17.2% of their weight across 6 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.
GDX and IYM
17.2%
6 shared positions
GDX
VanEck Gold Miners ETF
Reported positions cover 100% of the fund, 61 positions · Jun 30, 2026
Top 10: 58.6%·Holdings of GDX
IYM
iShares U.S. Basic Materials ETF
Reported positions cover 100% of the fund, 39 positions · Jul 31, 2026
Top 10: 67.5%·Holdings of IYM
Reported positions cover GDX 100%, IYM 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
IYM vs GDX side by side
GDXVanEck Gold Miners ETF
61
stock positions reported to the SEC
78.3% of its weight is in 55 names IYM does not hold
IYMiShares U.S. Basic Materials ETF
39
stock positions reported to the SEC
82.7% of its weight is in 33 names GDX does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Consumer Defensive: IYM has 7.8 points more of it.
The figures side by side
| GDX | IYM | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jul 31, 2026 |
| Stock positions reported | 61 | 39 |
| Weight of the ten largest | 58.6% | 67.5% |
| Largest position | AEM 10.7% | LIN 20.4% |
| Held alone | 55 positions, 78.3% | 33 positions, 82.7% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In GDX | In IYM | Counted |
|---|---|---|---|
| NEMNewmont Corp | 10.41% | 9.28% | 9.28% |
| AUAnglogold Ashanti Plc | 5.04% | 3.40% | 3.40% |
| RGLDRoyal Gold Inc | 1.95% | 1.75% | 1.75% |
| CDECoeur Mining Inc | 2.38% | 1.60% | 1.60% |
| HLHecla Mining Co | 1.38% | 0.93% | 0.93% |
| AUGOAura Minerals Inc | 0.45% | 0.23% | 0.23% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in GDX
Only in IYM
Questions people ask
Is GDX the same as IYM?
17.2% of their weight sits in the same 6 holdings. GDX also reports AEM, B, WPM, which the other does not. IYM also reports LIN, FCX, ECL, which the other does not.
How is the overlap between GDX and IYM 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 GDX and 100% of IYM, so the number cannot exceed the smaller coverage.
Which holds more, IYM or GDX?
GDX reports 61 stock positions and IYM reports 39. 78.3% of GDX's weight sits in names IYM does not hold, and 82.7% of IYM's weight in names GDX does not hold. The ten largest positions are 58.6% of GDX and 67.5% of IYM.
How do GDX and IYM differ by sector?
The widest gap is Consumer Defensive: IYM has 7.8 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.