VGUSvsGMMFETF Comparison
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Vanguard Ultra-Short Treasury ETF (VGUS) and iShares Government Money Market ETF (GMMF) belong to the same industry segment: Money Market Bonds. VGUS's top 1 sector exposures are Sovereign. In contrast, GMMF's top sector exposures are Sovereign and Government Agencies. VGUS is less expensive with a Total Expense Ratio (TER) of 0.07%, versus 0.2% for GMMF. VGUS is up 2.96% year-to-date (YTD) with +$670M in YTD flows. GMMF performs better with 2.96% YTD performance, and +$100M in YTD flows. Run a side-by-side ETF comparison of VGUS and GMMF 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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VGUS vs GMMF performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/30/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | VGUS GMMF | +0.38%+0.34% | +0.94%+0.93% | +2.96%+2.96% | +3.68%+3.62% | n/an/a | n/an/a |
| Flows | VGUS GMMF | +$57M-$1K | +$176M+$6M | +$670M+$100M | +$731M+$111M | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | VGUS GMMF | +0.17%+0.10% | +0.15%+0.10% | n/an/a | n/an/a |
| Max drawdown | VGUS GMMF | n/an/a | n/an/a | n/an/a | n/an/a |
| Max drawdown duration | VGUS GMMF | n/an/a | n/an/a | n/an/a | n/an/a |
Trading data
VGUS | GMMF | |
Last sale 11/2/2026 at 2:30 PM | $75.46 | |
| Previous close 10/30/2026 | $75.70 | |
| Consolidated volume 10/30/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of October 30, 2026
1-year trailing difference
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GMMF
is actively managed and doesn’t replicate an indexVGUS | GMMF | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 11/2/2026 at 2:30 PM
Live
Closed
VGUS | GMMF | |
|---|---|---|
| Last price | $75.46 | – |
| 1D performance | -0.32% | – |
| AuM | $1.20 B | $191.55 M |
| E/R | 0.07% | 0.2% |
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Exposure
Countries
VGUS
USA
93.41%
Other
6.59%
GMMF
USA
88.01%
Other
11.99%
Sectors
VGUS
Sovereign
93.41%
Other
6.59%
GMMF
Sovereign
67.88%
Government Agenci.
20.13%
Other
11.99%
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Diversification
VGUS
Total weight of top 15 holdings out of 15
38.68%
GMMF
Total weight of top 15 holdings out of 15
61.67%
Top 15 holdings
Data as of September 30, 2026
VGUS
USA, Bills 0% 8oct2026, USD (182D)
3.94%
USA, Bills 0% 29oct2026, USD (364D)
3.22%
USA, Bills 0% 27nov2026, USD (364D)
3.18%
USA, Bills 0% 6oct2026, USD (119D)
2.58%
USA, Bills 0% 5nov2026, USD (182D)
2.57%
USA, Bills 0% 12nov2026, USD (182D)
2.57%
USA, Bills 0% 20oct2026, USD (119D)
2.55%
USA, Bills 0% 19nov2026, USD (182D)
2.55%
USA, Bills 0% 22oct2026, USD (182D)
2.54%
USA, Bills 0% 15oct2026, USD (182D)
2.52%
USA, Bills 0% 13oct2026, USD (119D)
2.49%
USA, Bills 0% 27oct2026, USD (119D)
2.41%
USA, Bills 0% 21jan2027, USD (364D)
1.89%
USA, Bills 0% 18feb2027, USD (364D)
1.85%
USA, Bills 0% 24dec2026, USD (363D)
1.82%
GMMF
USA, Bills 0% 6oct2026, USD (119D)
10.30%
USA, Bills 0% 3nov2026, USD (119D)
8.95%
USA, Bills 0% 1oct2026, USD (364D)
8.45%
USA, Bills 0% 20oct2026, USD (119D)
5.66%
USA, Bills 0% 17nov2026, USD (119D)
5.51%
USA, Bills 0% 29oct2026, USD (364D)
5.21%
USA, Bills 0% 24dec2026, USD (363D)
3.59%
USA, Bills 0% 10dec2026, USD (182D)
2.07%
USA, Bills 0% 28jan2027, USD (182D)
1.91%
FHLB, FRN 22oct2026, USD
1.89%
FHLB, FRN 13oct2026, USD
1.84%
USA, Notes FRN 30apr2028, USD (BB-2028)
1.84%
US912797WL77
1.70%
USA, Bills 0% 5nov2026, USD (182D)
1.52%
US912797WF00
1.24%
Frequently asked questions about VGUS and GMMF
How have the VGUS and GMMF ETFs performed in 2026?
As of October 30, 2026, VGUS is up 2.96% year-to-date (YTD), while GMMF has returned 2.96%. That puts GMMF better performer ahead so far this year.
Which ETF is attracting more investor money: VGUS or GMMF?
Year-to-date, the VGUS ETF saw +$670M in flows, compared to +$100M for GMMF.
Which ETF is more volatile: VGUS or GMMF?
Over the past year, VGUS had a volatility of 0.15%, while GMMF experienced 0.1%.
Which ETF is bigger: VGUS or GMMF?
As of October 30, 2026, VGUS holds $1.20 B in assets under management (AUM), while GMMF manages $191.55 M.
What sectors do the VGUS and GMMF ETFs invest in?
VGUS leans toward sectors like Sovereign. Meanwhile, GMMF focuses on Sovereign and Government Agencies.
What are the top holdings of the VGUS ETF and GMMF ETF?
VGUS top holdings include USA, Bills 0% 8oct2026, USD (182D), USA, Bills 0% 29oct2026, USD (364D) and USA, Bills 0% 27nov2026, USD (364D). GMMF holds in its top three: USA, Bills 0% 6oct2026, USD (119D), USA, Bills 0% 3nov2026, USD (119D) and USA, Bills 0% 1oct2026, USD (364D).
Which ETF is more diversified: VGUS or GMMF?
VGUS holds 90 securities with 38.68% of its assets in the top 15. GMMF has 153 securities and a top 15 weight of 61.67%.
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