AGGvsIUSBETF Comparison
VS
iShares Core U.S. Aggregate Bond ETF (AGG) belongs to the Intl IG Bonds segment. iShares Core Total USD Bond Market ETF (IUSB) is part of the US Aggregate Bonds segment. AGG's top 3 sector exposures are Sovereign, Other sectors and Banks. In contrast, IUSB's top sector exposures are Sovereign, Banks and Other sectors. AGG is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.06% for IUSB. AGG is up 0.93% year-to-date (YTD) with +$1.12B in YTD flows. IUSB performs better with 0.96% YTD performance, and +$2.12B in YTD flows. Run a side-by-side ETF comparison of AGG and IUSB 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 IUSB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 04/17/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | AGG IUSB | +0.44%+0.54% | +1.14%+1.14% | +0.93%+0.96% | +6.13%+6.59% | +12.81%+14.58% | +1.73%+3.46% |
| Flows | AGG IUSB | -$3.49B+$466M | +$142M+$1.87B | +$1.12B+$2.12B | +$11.39B+$3.10B | +$47.03B+$14.15B | +$60.92B+$26.03B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | AGG IUSB | +4.14%+3.91% | +3.90%+3.62% | +5.37%+5.01% | +5.86%+5.48% |
| Max drawdown | AGG IUSB | -2.47%-2.47% | -2.47%-2.47% | -7.16%-6.50% | -17.86%-17.91% |
| Max drawdown duration | AGG IUSB | 47d47d | 47d47d | 223d223d | 1667d1492d |
Trading data
AGG | IUSB | |
Last sale 4/17/2026 at 1:30 PM | $99.85 | $46.53 |
| Previous close 04/16/2026 | $99.48 | $46.35 |
| Consolidated volume 04/16/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of March 31, 2026
1-year trailing difference
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AGG | IUSB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 4/17/2026 at 1:30 PM
Live
Closed
AGG | IUSB | |
|---|---|---|
| Last price | $99.85 | $46.53 |
| 1D performance | +0.37% | +0.39% |
| AuM | $136.38 B | $36.55 B |
| E/R | 0.03% | 0.06% |
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Exposure
Countries
AGG
USA
97.81%
Other
2.19%
IUSB
USA
90.02%
Other
9.98%
Sectors
AGG
Sovereign
35.91%
Other
64.09%
IUSB
Sovereign
33.03%
Other
66.97%
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Diversification
AGG
Total weight of top 15 holdings out of 15
8.95%
IUSB
Total weight of top 15 holdings out of 15
7.65%
Top 15 holdings
Data as of February 28, 2026
AGG
US0669225197
3.20%
US91282CPL99
0.47%
US91282CPR69
0.43%
USA, Notes 4.375% 15may2034, USD (C-2034)
0.43%
US91282CPJ44
0.43%
USA, Notes 4.625% 15feb2035, USD (B-2035)
0.42%
USA, Notes 4.25% 15nov2034, USD (F-2034)
0.42%
USA, Notes 4% 15feb2034, USD (B-2034)
0.41%
USA, Notes 4% 28feb2030, USD (H-2030)
0.41%
USA, Notes 4.5% 15nov2033, USD (F-2033)
0.41%
USA, Notes 3.875% 15aug2034, USD (E-2034)
0.40%
US91282CNC19
0.40%
US91282CNT44
0.39%
USA, Notes 1.375% 15nov2031, USD (F-2031)
0.38%
USA, Notes 3.5% 15feb2033, USD (B-2033)
0.35%
IUSB
US09248U6432
2.60%
USA, Notes 4.25% 15nov2034, USD (F-2034)
0.39%
USA, Notes 4.375% 15may2034, USD (C-2034)
0.39%
USA, Notes 4% 28feb2030, USD (H-2030)
0.38%
USA, Notes 3.875% 15aug2034, USD (E-2034)
0.38%
US91282CNC19
0.38%
USA, Notes 4% 15feb2034, USD (B-2034)
0.37%
US91282CPD73
0.36%
USA, Notes 4.625% 15feb2035, USD (B-2035)
0.35%
US91282CPJ44
0.35%
US91282CPA35
0.35%
US91282CNT44
0.34%
USA, Notes 3.875% 15aug2033, USD (E-2033)
0.34%
USA, Notes 4.5% 15nov2033, USD (F-2033)
0.34%
US31418DPC01
0.33%
Frequently asked questions about AGG and IUSB
How have the AGG and IUSB ETFs performed in 2026?
As of April 17, 2026, AGG is up 0.93% year-to-date (YTD), while IUSB has returned 0.96%. That puts IUSB better performer ahead so far this year.
Which ETF is attracting more investor money: AGG or IUSB?
Year-to-date, the AGG ETF saw +$1.12B in flows, compared to +$2.12B for IUSB.
Which ETF is more volatile: AGG or IUSB?
Over the past year, AGG had a volatility of 3.9%, while IUSB experienced 3.62%.
Which ETF is bigger: AGG or IUSB?
As of April 17, 2026, AGG holds $136.38 B in assets under management (AUM), while IUSB manages $36.55 B.
What sectors do the AGG and IUSB ETFs invest in?
AGG leans toward sectors like Sovereign. Meanwhile, IUSB focuses on Sovereign.
What are the top holdings of the AGG ETF and IUSB ETF?
AGG top holdings include US0669225197, US91282CPL99 and US91282CPR69. IUSB holds in its top three: US09248U6432, USA, Notes 4.25% 15nov2034, USD (F-2034) and USA, Notes 4.375% 15may2034, USD (C-2034).
Which ETF is more diversified: AGG or IUSB?
AGG holds 13058 securities with 8.95% of its assets in the top 15. IUSB has 17706 securities and a top 15 weight of 7.65%.
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