BAMUvsSPTUETF Comparison
VS
ETF 2
SPTU
State Street SPDR Portfolio Ultra Short T-Bill ETF
This fund is part of
Money Market Bonds
+0.03%
Brookstone Ultra-Short Bond ETF (BAMU) belongs to the US Aggregate Bonds segment. State Street SPDR Portfolio Ultra Short T-Bill ETF (SPTU) is part of the Money Market Bonds segment. BAMU's top 2 sector exposures are Sovereign and Non-Corporate. In contrast, SPTU's top sector exposures are Sovereign. BAMU is more expensive with a Total Expense Ratio (TER) of 1.02%, versus 0.05% for SPTU. BAMU is up 2.06% year-to-date (YTD) with -$6M in YTD flows. SPTU performs better with 2.86% YTD performance, and +$6M in YTD flows. Run a side-by-side ETF comparison of BAMU and SPTU 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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BAMU vs SPTU performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/15/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | BAMU SPTU | +0.24%+0.35% | +0.69%+0.92% | +2.06%+2.86% | +2.71%+3.72% | +10.82%n/a | n/an/a |
| Flows | BAMU SPTU | -+$3M | -$2M+$3M | -$6M+$6M | -$8M+$7M | +$63M- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | BAMU SPTU | +0.30%+0.17% | +0.30%+0.16% | +0.34%n/a | n/an/a |
| Max drawdown | BAMU SPTU | n/an/a | n/an/a | -0.04%n/a | n/an/a |
| Max drawdown duration | BAMU SPTU | n/an/a | n/an/a | 2dn/a | n/an/a |
Trading data
BAMU | SPTU | |
Last sale 10/16/2026 at 1:30 PM | $25.27 | $25.05 |
| Previous close 10/15/2026 | $25.26 | $25.04 |
| Consolidated volume 10/15/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of October 19, 2026
1-year trailing difference
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BAMU
is actively managed and doesn’t replicate an indexBAMU | SPTU | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/16/2026 at 1:30 PM
Live
Closed
BAMU | SPTU | |
|---|---|---|
| Last price | $25.27 | $25.05 |
| 1D performance | +0.04% | +0.04% |
| AuM | $65.68 M | $16.78 M |
| E/R | 1.02% | 0.05% |
Characteristics
BAMU | SPTU | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Brookstone Asset Management | State Street Investment Management |
| Benchmark | - | ICE BofA US Treasury Bill Index |
| N° of holdings | 93 | 36 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 27, 2023 | October 8, 2025 |
| ESG | No | No |
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Exposure
Countries
BAMU
USA
98.9%
Other
1.1%
SPTU
USA
89.55%
Other
10.45%
Sectors
BAMU
Sovereign
95.3%
Other
4.7%
SPTU
Sovereign
89.55%
Other
10.45%
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Diversification
BAMU
Total weight of top 15 holdings out of 15
39.58%
SPTU
Total weight of top 15 holdings out of 15
59.84%
Top 15 holdings
Data as of August 31, 2026
BAMU
BlackRock Cash Funds - Treasury
3.61%
USA, Bills 0% 20oct2026, USD (119D)
3.57%
USA, Bills 0% 13oct2026, USD (119D)
3.29%
USA, Bills 0% 29oct2026, USD (364D)
3.18%
USA, Bills 0% 27oct2026, USD (119D)
2.65%
USA, Bills 0% 8oct2026, USD (182D)
2.56%
USA, Bills 0% 15oct2026, USD (182D)
2.45%
USA, Bills 0% 27nov2026, USD (364D)
2.43%
USA, Notes 3.5% 30sep2026, USD (BH-2026)
2.39%
USA, Bills 0% 22oct2026, USD (182D)
2.35%
USA, Bills 0% 5nov2026, USD (182D)
2.33%
USA, Bills 0% 19nov2026, USD (182D)
2.31%
USA, Bills 0% 6oct2026, USD (119D)
2.28%
USA, Notes 4.125% 31oct2026, USD (BJ-2026)
2.12%
USA, Notes 0.875% 30sep2026, USD (AD-2026)
2.07%
SPTU
USA, Bills 0% 1oct2026, USD (364D)
6.90%
USA, Bills 0% 8oct2026, USD (182D)
5.78%
USA, Bills 0% 27nov2026, USD (364D)
4.66%
USA, Bills 0% 29oct2026, USD (364D)
4.54%
USA, Bills 0% 13oct2026, USD (119D)
3.79%
USA, Bills 0% 5nov2026, USD (182D)
3.78%
USA, Bills 0% 12nov2026, USD (182D)
3.78%
USA, Bills 0% 19nov2026, USD (182D)
3.78%
USA, Bills 0% 20oct2026, USD (119D)
3.71%
USA, Bills 0% 6oct2026, USD (119D)
3.61%
USA, Bills 0% 15oct2026, USD (182D)
3.43%
USA, Bills 0% 22oct2026, USD (182D)
3.43%
USA, Bills 0% 24dec2026, USD (363D)
3.42%
USA, Bills 0% 18feb2027, USD (364D)
2.73%
USA, Bills 0% 21jan2027, USD (364D)
2.51%
Frequently asked questions about BAMU and SPTU
How have the BAMU and SPTU ETFs performed in 2026?
As of October 15, 2026, BAMU is up 2.06% year-to-date (YTD), while SPTU has returned 2.86%. That puts SPTU better performer ahead so far this year.
Which ETF is attracting more investor money: BAMU or SPTU?
Year-to-date, the BAMU ETF saw -$6M in flows, compared to +$6M for SPTU.
Which ETF is more volatile: BAMU or SPTU?
Over the past year, BAMU had a volatility of 0.3%, while SPTU experienced 0.16%.
Which ETF is bigger: BAMU or SPTU?
As of October 15, 2026, BAMU holds $65.68 M in assets under management (AUM), while SPTU manages $16.78 M.
What sectors do the BAMU and SPTU ETFs invest in?
BAMU leans toward sectors like Sovereign. Meanwhile, SPTU focuses on Sovereign.
What are the top holdings of the BAMU ETF and SPTU ETF?
BAMU top holdings include BlackRock Cash Funds - Treasury, USA, Bills 0% 20oct2026, USD (119D) and USA, Bills 0% 13oct2026, USD (119D). SPTU holds in its top three: USA, Bills 0% 1oct2026, USD (364D), USA, Bills 0% 8oct2026, USD (182D) and USA, Bills 0% 27nov2026, USD (364D).
Which ETF is more diversified: BAMU or SPTU?
BAMU holds 98 securities with 39.58% of its assets in the top 15. SPTU has 41 securities and a top 15 weight of 59.84%.
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