BDBTvsSPABETF Comparison
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Bluemonte Core Bond ETF (BDBT) and State Street SPDR Portfolio Aggregate Bond ETF (SPAB) belong to the same industry segment: US Aggregate Bonds. Both ETFs have the same top 3 sector exposures: Sovereign, Finance and Industrials. BDBT is more expensive with a Total Expense Ratio (TER) of 0.28%, versus 0.03% for SPAB. BDBT is down -0.51% year-to-date (YTD) with +$94M in YTD flows. SPAB performs better with -0.31% YTD performance, and +$1.18B in YTD flows. Run a side-by-side ETF comparison of BDBT and SPAB 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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BDBT vs SPAB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/03/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | BDBT SPAB | -0.01%+0.08% | -0.64%-0.52% | -0.51%-0.31% | +1.30%+1.71% | n/a+13.80% | n/a-1.60% |
| Flows | BDBT SPAB | +$6M+$479M | +$25M+$661M | +$94M+$1.18B | +$163M+$1.87B | -+$3.54B | -+$5.02B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | BDBT SPAB | +4.07%+3.94% | +3.75%+3.68% | n/a+5.07% | n/a+5.95% |
| Max drawdown | BDBT SPAB | -1.74%-1.72% | -2.81%-2.76% | n/a-4.87% | n/a-17.87% |
| Max drawdown duration | BDBT SPAB | 66d66d | 186d186d | n/a284d | n/a1626d |
Trading data
BDBT | SPAB | |
Last sale 9/4/2026 at 1:42 PM | $24.73 | $25.01 |
| Previous close 09/03/2026 | $24.71 | $24.99 |
| Consolidated volume 09/03/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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BDBT
is actively managed and doesn’t replicate an indexBDBT | SPAB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/4/2026 at 1:42 PM
Live
Closed
BDBT | SPAB | |
|---|---|---|
| Last price | $24.73 | $25.01 |
| 1D performance | +0.08% | +0.08% |
| AuM | $485.46 M | $10.19 B |
| E/R | 0.28% | 0.03% |
Characteristics
BDBT | SPAB | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Bluemonte Investment Management | State Street Investment Management |
| Benchmark | - | Bloomberg US Aggregate Bond Index |
| N° of holdings | 11352 | 7063 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | June 23, 2025 | May 23, 2007 |
| ESG | No | No |
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Exposure
Countries
BDBT
USA
77.25%
Other
22.75%
SPAB
USA
75.76%
Other
24.24%
Sectors
BDBT
Sovereign
46.72%
Finance
10.33%
Industrials
7.05%
Other
35.9%
SPAB
Sovereign
46.7%
Finance
10.36%
Industrials
9.6%
Other
33.34%
Diversification
BDBT
Total weight of top 15 holdings out of 15
10.84%
SPAB
Total weight of top 15 holdings out of 15
6.21%
Top 15 holdings
Data as of July 31, 2026
BDBT
BlackRock Cash Funds - Institutional
2.33%
USA, Notes 4.625% 15feb2035, USD (B-2035)
0.65%
USA, Notes 4.375% 15may2034, USD (C-2034)
0.64%
USA, Notes 4.25% 15nov2034, USD (F-2034)
0.63%
USA, Notes 4.25% 15aug2035, USD (E-2035)
0.63%
USA, Notes 4.25% 15may2035, USD (C-2035)
0.63%
USA, Notes 4.125% 15feb2036, USD (B-2036)
0.62%
USA, Notes 3.875% 15aug2034, USD (E-2034)
0.62%
USA, Notes 4% 15feb2034, USD (B-2034)
0.62%
USA, Notes 4.5% 15nov2033, USD (F-2033)
0.62%
USA, Notes 4% 15nov2035, USD (F-2035)
0.61%
USA, Notes 3.625% 31aug2029, USD (AC-2029)
0.60%
USA, Notes 4% 28feb2030, USD (H-2030)
0.58%
USA, Notes 3.875% 15aug2033, USD (E-2033)
0.55%
USA, Notes 2.875% 15may2032, USD (C-2032)
0.51%
SPAB
USA, Notes 3.5% 15dec2028, USD (AV-2028)
0.77%
USA, Notes 4% 15nov2035, USD (F-2035)
0.46%
USA, Notes 4.375% 30nov2028, USD (AG-2028)
0.43%
USA, Notes 3.5% 31jan2028, USD (U-2028)
0.42%
USA, Notes 3.875% 31mar2031, USD (W-2031)
0.41%
USA, Notes 3.375% 31dec2027, USD (BM-2027)
0.39%
USA, Notes 4.25% 15nov2034, USD (F-2034)
0.39%
USA, Notes 4.25% 15aug2035, USD (E-2035)
0.38%
USA, Notes 4.375% 15may2036, USD (C-2036)
0.38%
US01F0526800
0.38%
USA, Notes 4.375% 15may2034, USD (C-2034)
0.36%
USA, Notes 3.875% 15aug2033, USD (E-2033)
0.36%
USA, Notes 4.5% 15nov2033, USD (F-2033)
0.36%
USA, Notes 4.625% 15feb2035, USD (B-2035)
0.36%
USA, Notes 3.875% 15aug2034, USD (E-2034)
0.36%
Frequently asked questions about BDBT and SPAB
How have the BDBT and SPAB ETFs performed in 2026?
As of September 3, 2026, BDBT is down -0.51% year-to-date (YTD), while SPAB has lost -0.31%. That puts SPAB better performer ahead so far this year.
Which ETF is attracting more investor money: BDBT or SPAB?
Year-to-date, the BDBT ETF saw +$94M in flows, compared to +$1.18B for SPAB.
Which ETF is more volatile: BDBT or SPAB?
Over the past year, BDBT had a volatility of 3.75%, while SPAB experienced 3.68%.
Which ETF is bigger: BDBT or SPAB?
As of September 3, 2026, BDBT holds $485.46 M in assets under management (AUM), while SPAB manages $10.19 B.
What sectors do the BDBT and SPAB ETFs invest in?
BDBT leans toward sectors like Sovereign, Finance and Industrials. Meanwhile, SPAB focuses on Sovereign, Finance and Industrials.
What are the top holdings of the BDBT ETF and SPAB ETF?
BDBT top holdings include BlackRock Cash Funds - Institutional, USA, Notes 4.625% 15feb2035, USD (B-2035) and USA, Notes 4.375% 15may2034, USD (C-2034). SPAB holds in its top three: USA, Notes 3.5% 15dec2028, USD (AV-2028), USA, Notes 4% 15nov2035, USD (F-2035) and USA, Notes 4.375% 30nov2028, USD (AG-2028).
Which ETF is more diversified: BDBT or SPAB?
BDBT holds 20859 securities with 10.84% of its assets in the top 15. SPAB has 8468 securities and a top 15 weight of 6.21%.
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