IAUMvsOUNZETF Comparison
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iShares Gold Trust Micro (IAUM) and VanEck Merk Gold Trust ETF (OUNZ) belong to the same industry segment: Gold. IAUM is less expensive with a Total Expense Ratio (TER) of 0.09%, versus 0.25% for OUNZ. IAUM is down -6.89% year-to-date (YTD) with +$2.62B in YTD flows. OUNZ performs better with -6.81% YTD performance, and +$364M in YTD flows. Run a side-by-side ETF comparison of IAUM and OUNZ below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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IAUM vs OUNZ performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/23/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IAUM OUNZ | -6.33%-7.76% | -0.80%-2.58% | -6.89%-6.81% | -3.22%-2.10% | +102.99%+102.59% | +121.51%+119.96% |
| Flows | IAUM OUNZ | +$474M+$8M | +$1.78B+$107M | +$2.62B+$364M | +$2.86B+$363M | +$5.82B+$957M | +$5.81B+$1.07B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IAUM OUNZ | +21.27%+23.81% | +27.28%+28.25% | +20.39%+21.37% | +18.09%+18.74% |
| Max drawdown | IAUM OUNZ | -13.96%-13.71% | -26.14%-26.36% | -26.14%-26.36% | -26.14%-26.36% |
| Max drawdown duration | IAUM OUNZ | 60d58d | 267d266d | 267d266d | 267d266d |
Trading data
IAUM | OUNZ | |
Last sale 10/23/2026 at 1:30 PM | $39.86 | $38.42 |
| Previous close 10/22/2026 | $40.14 | $38.68 |
| Consolidated volume 10/22/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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IAUM | OUNZ | |
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| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
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Main metrics
Last update 10/23/2026 at 1:30 PM
Live
Closed
IAUM | OUNZ | |
|---|---|---|
| Last price | $39.86 | $38.42 |
| 1D performance | -0.70% | -0.67% |
| AuM | $7.95 B | $2.61 B |
| E/R | 0.09% | 0.25% |
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Exposure
Countries
IAUM
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OUNZ
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Sectors
IAUM
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OUNZ
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Diversification
IAUM
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OUNZ
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Top 15 holdings
Data as of January 1, 1970
IAUM
Data will be available soon
OUNZ
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Frequently asked questions about IAUM and OUNZ
How have the IAUM and OUNZ ETFs performed in 2026?
As of October 23, 2026, IAUM is down -6.89% year-to-date (YTD), while OUNZ has lost -6.81%. That puts OUNZ better performer ahead so far this year.
Which ETF is attracting more investor money: IAUM or OUNZ?
Year-to-date, the IAUM ETF saw +$2.62B in flows, compared to +$364M for OUNZ.
Which ETF is more volatile: IAUM or OUNZ?
Over the past year, IAUM had a volatility of 27.28%, while OUNZ experienced 28.25%.
Which ETF is bigger: IAUM or OUNZ?
As of October 23, 2026, IAUM holds $7.95 B in assets under management (AUM), while OUNZ manages $2.61 B.
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Latest news about IAUM & OUNZ
ETF Model Portfolios: The Cockroach Portfolio
March 20, 2026
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Hedging the Hedge: Can Gold Itself Be Protected?
September 26, 2025
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May 15, 2024
IAUM
Tony's ETF Buyers Guide: All Gold Everything
April 11, 2024
IAUM
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