Data as of .
GBUG vs ISTM: which is really different?
GBUG and ISTM hold 0% of their weight in the same names, and GBUG returned more over the year.
ETFIQ Off-Index Score: ISTM 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
0% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, GBUG and ISTM hold 0% of their money in the same securities at the same weight.
| Only in GBUG | Only in ISTM |
|---|---|
| DPM Metals Inc. 5.29% | BLK CSH FND TREASURY SL AGENCY 17.46% |
| G Mining Ventures Corp. 4.94% | CASH COLLATERAL USD BZUFT 9.45% |
| Discovery Mining Ltd. 4.55% | USD CASH 3.30% |
| IAMGOLD Corp. 4.15% | TREASURY BILL 2.92% |
| Eldorado Gold Corp. 4.00% | TREASURY BILL 2.91% |
| Montage Gold Corp. 4.00% | CRH AMERICA FINANCE INC 144A 1.51% |
| Coeur Mining Inc. 3.82% | TREASURY BILL 1.46% |
| Wesdome Gold Mines Ltd. 3.81% | TREASURY BILL 1.45% |
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 Sep 18, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| GBUG | ISTM | GBUG | ISTM | GBUG | ISTM | |
| 3 months | +19.9% | +2.2% | +17.6 pts | −0.1 pts | +22.4 pts | +4.7 pts |
| 6 months | +26.4% | +11.0% | +8.4 pts | −7.0 pts | +2.2 pts | −13.2 pts |
| 1 year | +50.5% | +43.4% | +33.9 pts | +26.9 pts | +28.7 pts | +21.6 pts |
| Since launch | +150.3% | +86.4% | +123.0 pts | +2.1 pts | +115.0 pts | −18.4 pts |
| GBUG Sprott Active Gold & Silver Miners ETF Holds 44 stocks in gold miners, 3% of its weight in S&P 500 companies | ISTM iShares Strategic Metals ETF Holds 98 stocks in rare earth and critical materials, 0% of its weight in S&P 500 companies | |
|---|---|---|
| Issuer | Sprott | iShares |
| Theme | Gold miners | Rare earth and critical materials |
| In the S&P 500 | 3.3% | 0.0% |
| Active share vs the S&P 500 | 99.8% | 100.0% |
| In the Nasdaq-100 | 0.0% | 0.0% |
| Holdings | 44 | 98 |
| Top ten, share of the fund | 41.2% | 46.0% |
| Expense ratio | 0.90% | 0.47% |
| Fee for the differing part | 0.90% | 0.47% |
| Total return, 1 year | +50.5% | +43.4% |
| vs the S&P 500 | +33.9 pts | +26.9 pts |
| vs the Nasdaq-100 | +28.7 pts | +21.6 pts |
| Below its high | −14.2% | −13.6% |
| Net assets | $192m | $34m |
GBUG in plain words
By weight, 3% of GBUG'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 41% of the fund across 44 positions, as published by its issuer for Sep 18, 2026. Over the year to Sep 18, 2026 the fund returned +50.5% with distributions reinvested against +16.6% for the S&P 500, so a holder was ahead by 33.9 pts. It sits 14.2% below its all-time high of Feb 27, 2026.
ISTM in plain words
By weight, 0% of ISTM'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 46% of the fund across 98 positions, as published by its issuer for Sep 18, 2026. Over the year to Sep 18, 2026 the fund returned +43.4% with distributions reinvested against +16.6% for the S&P 500, so a holder was ahead by 26.9 pts. It sits 13.6% below its all-time high of Jan 29, 2026.
Questions people ask
- Do GBUG and ISTM hold the same stocks?
- By their latest filings, 0% of their books are the same securities at the same weight, which is mostly different names. Overlap is the sum of the smaller weight of every security they share.
- Which is more different from the S&P 500, GBUG or ISTM?
- GBUG has 3% of its weight in S&P 500 names and ISTM has 0%, so ISTM differs more from the index.
- Which is cheaper, GBUG or ISTM?
- GBUG charges 0.90% a year and ISTM charges 0.47%, so ISTM 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, GBUG against ISTM, data as of Sep 18, 2026. https://etfiq.com/compare/themes/gbug-vs-istm Free to use with attribution; the underlying files are at Open data.