AGGvsBDBTETF Comparison
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iShares Core U.S. Aggregate Bond ETF (AGG) and Bluemonte Core Bond ETF (BDBT) belong to the same industry segment: US Aggregate Bonds. Both ETFs have the same top 3 sector exposures: Sovereign, Finance and Industrials. AGG is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.27% for BDBT. AGG is down -0.32% year-to-date (YTD) with +$7.02B in YTD flows. BDBT performs worse with -0.51% YTD performance, and +$94M in YTD flows. Run a side-by-side ETF comparison of AGG and BDBT 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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AGG vs BDBT performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/04/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | AGG BDBT | -0.35%-0.38% | -0.67%-0.24% | -0.32%-0.51% | +1.32%+0.16% | +13.76%n/a | -1.23%n/a |
| Flows | AGG BDBT | +$1.69B+$5M | +$4.12B+$25M | +$7.02B+$94M | +$11.20B+$163M | +$45.25B- | +$65.11B- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | AGG BDBT | +3.92%+3.99% | +3.67%+3.70% | +5.03%n/a | +5.91%n/a |
| Max drawdown | AGG BDBT | -1.72%-1.74% | -2.73%-2.81% | -4.86%n/a | -17.79%n/a |
| Max drawdown duration | AGG BDBT | 67d70d | 187d190d | 284dn/a | 1625dn/a |
Trading data
AGG | BDBT | |
Last sale 9/8/2026 at 1:30 PM | $96.90 | $24.69 |
| Previous close 09/04/2026 | $97.00 | $24.72 |
| Consolidated volume 09/04/2026 | ||
| 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 indexAGG | BDBT | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/8/2026 at 1:30 PM
Live
Closed
AGG | BDBT | |
|---|---|---|
| Last price | $96.90 | $24.69 |
| 1D performance | -0.10% | -0.10% |
| AuM | $138.24 B | $485.50 M |
| E/R | 0.03% | 0.27% |
Characteristics
AGG | BDBT | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | Bluemonte Investment Management |
| Benchmark | Bloomberg US Aggregate Bond Index | - |
| N° of holdings | 10356 | 11352 |
| Asset class | Bonds | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 22, 2003 | June 23, 2025 |
| ESG | No | No |
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Exposure
Countries
AGG
USA
77.45%
Other
22.55%
BDBT
USA
77.25%
Other
22.75%
Sectors
AGG
Sovereign
47.55%
Finance
10.22%
Industrials
7.11%
Other
35.12%
BDBT
Sovereign
46.72%
Finance
10.33%
Industrials
7.05%
Other
35.9%
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Diversification
AGG
Total weight of top 15 holdings out of 15
8.32%
BDBT
Total weight of top 15 holdings out of 15
10.84%
Top 15 holdings
Data as of July 31, 2026
AGG
BlackRock Cash Funds - Institutional
2.85%
USA, Notes 4.625% 15feb2035, USD (B-2035)
0.42%
USA, Notes 4% 28feb2030, USD (H-2030)
0.41%
USA, Notes 4.25% 15nov2034, USD (F-2034)
0.41%
USA, Notes 4.375% 15may2034, USD (C-2034)
0.40%
USA, Notes 4.125% 15feb2036, USD (B-2036)
0.40%
USA, Notes 3.875% 15aug2034, USD (E-2034)
0.40%
USA, Notes 4.25% 15aug2035, USD (E-2035)
0.40%
USA, Notes 4.25% 15may2035, USD (C-2035)
0.39%
USA, Notes 4.5% 15nov2033, USD (F-2033)
0.39%
USA, Notes 4% 15feb2034, USD (B-2034)
0.39%
USA, Notes 4% 15nov2035, USD (F-2035)
0.38%
USA, Notes 3.875% 15jul2028, USD (AQ-2028)
0.36%
USA, Notes 3.875% 15jun2028, USD (AP-2028)
0.36%
USA, Notes 3.875% 15aug2033, USD (E-2033)
0.35%
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%
Frequently asked questions about AGG and BDBT
How have the AGG and BDBT ETFs performed in 2026?
As of September 4, 2026, AGG is down -0.32% year-to-date (YTD), while BDBT has lost -0.51%. That puts AGG better performer ahead so far this year.
Which ETF is attracting more investor money: AGG or BDBT?
Year-to-date, the AGG ETF saw +$7.02B in flows, compared to +$94M for BDBT.
Which ETF is more volatile: AGG or BDBT?
Over the past year, AGG had a volatility of 3.67%, while BDBT experienced 3.7%.
Which ETF is bigger: AGG or BDBT?
As of September 4, 2026, AGG holds $138.24 B in assets under management (AUM), while BDBT manages $485.50 M.
What sectors do the AGG and BDBT ETFs invest in?
AGG leans toward sectors like Sovereign, Finance and Industrials. Meanwhile, BDBT focuses on Sovereign, Finance and Industrials.
What are the top holdings of the AGG ETF and BDBT ETF?
AGG top holdings include BlackRock Cash Funds - Institutional, USA, Notes 4.625% 15feb2035, USD (B-2035) and USA, Notes 4% 28feb2030, USD (H-2030). BDBT holds in its top three: BlackRock Cash Funds - Institutional, USA, Notes 4.625% 15feb2035, USD (B-2035) and USA, Notes 4.375% 15may2034, USD (C-2034).
Which ETF is more diversified: AGG or BDBT?
AGG holds 13243 securities with 8.32% of its assets in the top 15. BDBT has 20859 securities and a top 15 weight of 10.84%.
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