IAUvsIAUMETF Comparison
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The ETFs iShares Gold Trust ETF (IAU) and iShares Gold Trust Micro (IAUM) track the LBMA London Gold Market Fixing Price PM Index - USD and belong to the same industry segment: Gold. IAU is more expensive with a Total Expense Ratio (TER) of 0.25%, versus 0.09% for IAUM. IAU is up 3.17% year-to-date (YTD) with -$2.34B in YTD flows. IAUM performs better with 3.25% YTD performance, and +$837M in YTD flows. Run a side-by-side ETF comparison of IAU and IAUM 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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IAU vs IAUM performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 06/01/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IAU IAUM | -4.07%-4.05% | -16.32%-16.29% | +3.17%+3.25% | +31.67%+31.90% | +123.69%+124.89% | +131.34%n/a |
| Flows | IAU IAUM | -$517M-$5M | -$3.27B-$68M | -$2.34B+$837M | +$5.05B+$2.92B | +$5.31B+$3.94B | +$3.64B- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IAU IAUM | +28.67%+28.67% | +24.99%+24.99% | +18.87%+18.87% | +17.28%n/a |
| Max drawdown | IAU IAUM | -16.96%-16.95% | -18.38%-18.35% | -18.38%-18.35% | -20.25%n/a |
| Max drawdown duration | IAU IAUM | 91d91d | 123d123d | 123d123d | 400dn/a |
Trading data
IAU | IAUM | |
Last sale 6/2/2026 at 4:26 PM | $84.49 | $44.79 |
| Previous close 06/01/2026 | $84.27 | $44.64 |
| Consolidated volume 06/01/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of June 2, 2026
1-year trailing difference
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IAU | IAUM | |
|---|---|---|
| Tracking error | ||
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| 1 year cumulative return difference | ||
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Main metrics
Last update 6/2/2026 at 4:26 PM
Live
Closed
IAU | IAUM | |
|---|---|---|
| Last price | $84.49 | $44.79 |
| 1D performance | +0.26% | +0.32% |
| AuM | $68.43 B | $6.97 B |
| E/R | 0.25% | 0.09% |
Characteristics
IAU | IAUM | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | iShares |
| Benchmark | LBMA London Gold Market Fixing Price PM Index | LBMA London Gold Market Fixing Price PM Index |
| N° of holdings | - | - |
| Asset class | Commodities | Commodities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | January 21, 2005 | June 15, 2021 |
| ESG | No | No |
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Exposure
Countries
IAU
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IAUM
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Sectors
IAU
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IAUM
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Diversification
IAU
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IAUM
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Top 15 holdings
Data as of January 1, 1970
IAU
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IAUM
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Frequently asked questions about IAU and IAUM
How have the IAU and IAUM ETFs performed in 2026?
As of June 1, 2026, IAU is up 3.17% year-to-date (YTD), while IAUM has returned 3.25%. That puts IAUM better performer ahead so far this year.
Which ETF is attracting more investor money: IAU or IAUM?
Year-to-date, the IAU ETF saw -$2.34B in flows, compared to +$837M for IAUM.
Which ETF is more volatile: IAU or IAUM?
Over the past year, IAU had a volatility of 24.99%, while IAUM experienced 24.99%.
Which ETF is bigger: IAU or IAUM?
As of June 1, 2026, IAU holds $68.43 B in assets under management (AUM), while IAUM manages $6.97 B.
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