Data as of .
AUMI vs GDX: which is really different?
AUMI and GDX hold 36% of their weight in the same names, and GDX returned more over the year.
ETFIQ Off-Index Score: AUMI scores higher
How much of it is not the index it is sold as an alternative to?
A percentile among the 379 thematic ETFs with a holdings filing. It is a position in a set, not a rating, and neither end of it is a recommendation. All thematic ETFs ranked by it · How it is computed
36% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, AUMI and GDX hold 36% of their money in the same securities at the same weight.
| Holding | AUMI | GDX |
|---|---|---|
| Anglogold Ashanti Plc | 4.91% | 4.96% |
| Agnico Eagle Mines Ltd | 4.76% | 10.99% |
| Kinross Gold Corp | 4.59% | 4.12% |
| Gold Fields Ltd | 4.10% | 4.11% |
| Northern Star Resources Ltd | 4.34% | 2.45% |
| Alamos Gold Inc | 4.45% | 1.89% |
| Equinox Gold Corp | 4.09% | 1.88% |
| Endeavour Mining PLC | 5.33% | 1.30% |
| IAMGOLD Corp | 4.86% | 1.29% |
| G Mining Ventures Corp | 3.76% | 1.04% |
| Lundin Gold Inc | 4.03% | 0.97% |
| B2Gold Corp | 3.52% | 0.93% |
| Only in AUMI | Only in GDX |
|---|---|
| DPM Metals Inc 5.26% | Newmont Corp 10.88% |
| Orla Mining Ltd 2.23% | Barrick Mining Corp 7.75% |
| Wesdome Gold Mines Ltd 1.95% | Wheaton Precious Metals Corp 5.74% |
| Allied Gold Corp 1.62% | Franco-Nevada Corp 5.22% |
| Pan African Resources PLC 1.60% | Pan American Silver Corp 2.72% |
| Emerald Resources NL 1.49% | Coeur Mining Inc 2.19% |
| LunR Royalties Corp 0.21% | Royal Gold Inc 1.94% |
| Evolution Mining Ltd 1.53% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and Sep 18, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| AUMI | GDX | AUMI | GDX | AUMI | GDX | |
| 3 months | +17.9% | +15.7% | +15.7 pts | +13.5 pts | +20.4 pts | +18.2 pts |
| 6 months | +18.6% | +19.2% | +0.6 pts | +1.1 pts | −5.6 pts | −5.1 pts |
| 1 year | +38.2% | +39.8% | +21.6 pts | +23.2 pts | +16.4 pts | +18.0 pts |
| 3 years | not published | +236.3% | not published | +157.8 pts | not published | +138.1 pts |
| Since launch | +286.4% | +133.2% | +218.6 pts | −670.3 pts | +204.9 pts | −1557.0 pts |
| AUMI Themes Gold Miners ETF Holds 31 stocks in gold miners, 0% of its weight in S&P 500 companies | GDX VanEck Gold Miners ETF Holds 59 stocks in gold miners, 11% of its weight in S&P 500 companies | |
|---|---|---|
| Issuer | Themes | VanEck |
| Theme | Gold miners | Gold miners |
| In the S&P 500 | 0.0% | 10.9% |
| Active share vs the S&P 500 | 100.0% | 99.8% |
| In the Nasdaq-100 | 0.0% | 0.0% |
| Holdings | 31 | 59 |
| Top ten, share of the fund | 46.9% | 58.5% |
| Expense ratio | 0.35% | 0.51% |
| Fee for the differing part | 0.35% | 0.51% |
| Total return, 1 year | +38.2% | +39.8% |
| vs the S&P 500 | +21.6 pts | +23.2 pts |
| vs the Nasdaq-100 | +16.4 pts | +18.0 pts |
| Below its high | −19.2% | −17.6% |
| Net assets | $26m | $28.4bn |
AUMI in plain words
By weight, 0% of AUMI's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 100%. The top ten holdings are 47% of the fund across 31 positions, as filed for Jun 30, 2026. Over the year to Sep 18, 2026 the fund returned +38.2% with distributions reinvested against +16.6% for the S&P 500, so a holder was ahead by 21.6 pts. It sits 19.2% below its all-time high of Feb 27, 2026.
GDX in plain words
By weight, 11% of GDX's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 100%. The top ten holdings are 58% of the fund across 59 positions, as published by its issuer for Sep 18, 2026. Over the year to Sep 18, 2026 the fund returned +39.8% with distributions reinvested against +16.6% for the S&P 500, so a holder was ahead by 23.2 pts. It sits 17.6% below its all-time high of Feb 27, 2026.
Questions people ask
- Do AUMI and GDX hold the same stocks?
- By their latest filings, 36% of their books are the same securities at the same weight, which is a meaningful overlap. Overlap is the sum of the smaller weight of every security they share.
- Which is more different from the S&P 500, AUMI or GDX?
- AUMI has 0% of its weight in S&P 500 names and GDX has 11%, so AUMI differs more from the index.
- Which is cheaper, AUMI or GDX?
- AUMI charges 0.35% a year and GDX charges 0.51%, so AUMI is cheaper. Fees come from each fund's prospectus.
Other comparisons
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, AUMI against GDX, data as of Sep 18, 2026. https://etfiq.com/compare/themes/aumi-vs-gdx Free to use with attribution; the underlying files are at Open data.