IUSBvsBNDETF Comparison
VS
iShares Core Total USD Bond Market ETF (IUSB) and Vanguard Total Bond Market ETF (BND) belong to the same industry segment: US Aggregate Bonds. Both ETFs have the same top 3 sector exposures: Sovereign, Finance and Industrials. IUSB is more expensive with a Total Expense Ratio (TER) of 0.06%, versus 0.03% for BND. IUSB is down -0.78% year-to-date (YTD) with +$16.94B in YTD flows. BND performs worse with -1.15% YTD performance, and +$26.31B in YTD flows. Run a side-by-side ETF comparison of IUSB and BND 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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IUSB vs BND performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/27/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IUSB BND | +1.70%+1.81% | -0.68%-0.56% | -0.78%-1.15% | -0.95%-1.44% | +17.71%+15.89% | +0.44%-1.92% |
| Flows | IUSB BND | +$1.55B+$2.98B | +$7.56B+$8.08B | +$16.94B+$26.31B | +$18.31B+$30.95B | +$28.43B+$69.99B | +$37.58B+$100.34B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IUSB BND | +4.39%+4.53% | +3.74%+3.87% | +4.59%+4.78% | +5.56%+5.85% |
| Max drawdown | IUSB BND | -3.24%-3.20% | -4.33%-4.85% | -4.33%-4.85% | -17.40%-17.62% |
| Max drawdown duration | IUSB BND | 63d63d | 240d240d | 280d240d | 1406d1564d |
Trading data
IUSB | BND | |
Last sale 10/28/2026 at 1:30 PM | $44.69 | $71.19 |
| Previous close 10/27/2026 | $44.79 | $71.31 |
| Consolidated volume 10/27/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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IUSB | BND | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/28/2026 at 1:30 PM
Live
Closed
IUSB | BND | |
|---|---|---|
| Last price | $44.69 | $71.19 |
| 1D performance | -0.22% | -0.17% |
| AuM | $49.81 B | $166.39 B |
| E/R | 0.06% | 0.03% |
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Exposure
Countries
IUSB
USA
72.98%
Other
27.02%
BND
USA
76.02%
Other
23.98%
Sectors
IUSB
Sovereign
42.65%
Finance
13.17%
Other
44.17%
BND
Sovereign
48.07%
Finance
10.83%
Industrials
7.38%
Other
33.72%
Diversification
IUSB
Total weight of top 15 holdings out of 15
9.55%
BND
Total weight of top 15 holdings out of 15
5.83%
Top 15 holdings
Data as of August 31, 2026
IUSB
BlackRock Liquidity TempCash
4.49%
USA, Notes 4% 15nov2035, USD (F-2035)
0.49%
US01F0206957
0.41%
USA, Notes 4.375% 31dec2029, USD (AH-2029)
0.37%
USA, Notes 4.375% 15may2036, USD (C-2036)
0.36%
USA, Notes 4.125% 30jun2031, USD (AA-2031)
0.36%
USA, Notes 4% 15feb2034, USD (B-2034)
0.35%
USA, Notes 4.375% 15may2034, USD (C-2034)
0.35%
USA, Notes 4.625% 15feb2035, USD (B-2035)
0.35%
USA, Notes 4.25% 15nov2034, USD (F-2034)
0.35%
USA, Notes 4.25% 15may2035, USD (C-2035)
0.34%
USA, Notes 4.25% 15aug2035, USD (E-2035)
0.34%
USA, Notes 3.875% 15aug2034, USD (E-2034)
0.34%
USA, Notes 4.125% 15feb2036, USD (B-2036)
0.33%
USA, Notes 2.75% 15aug2032, USD (E-2032)
0.32%
BND
USA, Notes 3.5% 31jan2028, USD (U-2028)
0.47%
USA, Notes 4.25% 15nov2034, USD (F-2034)
0.41%
USA, Notes 4.375% 15may2034, USD (C-2034)
0.41%
USA, Notes 3.375% 30nov2027, USD (BL-2027)
0.41%
USA, Notes 4.625% 15feb2035, USD (B-2035)
0.41%
USA, Notes 3.875% 15aug2034, USD (E-2034)
0.41%
USA, Notes 4% 15feb2034, USD (B-2034)
0.40%
USA, Notes 4.125% 15feb2036, USD (B-2036)
0.40%
USA, Notes 4.25% 15aug2035, USD (E-2035)
0.38%
USA, Notes 4.5% 15nov2033, USD (F-2033)
0.38%
USA, Notes 4.25% 15may2035, USD (C-2035)
0.36%
USA, Notes 3.875% 15aug2033, USD (E-2033)
0.35%
USA, Notes 4% 28feb2030, USD (H-2030)
0.35%
USA, Notes 2.875% 15may2032, USD (C-2032)
0.35%
USA, Notes 1.25% 15aug2031, USD (E-2031)
0.34%
Frequently asked questions about IUSB and BND
How have the IUSB and BND ETFs performed in 2026?
As of October 27, 2026, IUSB is down -0.78% year-to-date (YTD), while BND has lost -1.15%. That puts IUSB better performer ahead so far this year.
Which ETF is attracting more investor money: IUSB or BND?
Year-to-date, the IUSB ETF saw +$16.94B in flows, compared to +$26.31B for BND.
Which ETF is more volatile: IUSB or BND?
Over the past year, IUSB had a volatility of 3.74%, while BND experienced 3.87%.
Which ETF is bigger: IUSB or BND?
As of October 27, 2026, IUSB holds $49.81 B in assets under management (AUM), while BND manages $166.39 B.
What sectors do the IUSB and BND ETFs invest in?
IUSB leans toward sectors like Sovereign and Finance. Meanwhile, BND focuses on Sovereign, Finance and Industrials.
What are the top holdings of the IUSB ETF and BND ETF?
IUSB top holdings include BlackRock Liquidity TempCash, USA, Notes 4% 15nov2035, USD (F-2035) and US01F0206957. BND holds in its top three: USA, Notes 3.5% 31jan2028, USD (U-2028), USA, Notes 4.25% 15nov2034, USD (F-2034) and USA, Notes 4.375% 15may2034, USD (C-2034).
Which ETF is more diversified: IUSB or BND?
IUSB holds 18013 securities with 9.55% of its assets in the top 15. BND has 15076 securities and a top 15 weight of 5.83%.
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Latest news about IUSB & BND
Why IUSB Is Overtaking AGG as the Default Bond ETF for Investors
October 23, 2026
IUSB
BND
The Weekly ETF Market Monitor (September 21-25, 2026)
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Which Types of Bond ETFs Are the Most Tax Efficient?
September 2, 2025
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Fixed Income 101: The Ins and Outs of U.S. Aggregate Bond ETFs
November 30, 2023
BND
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Bright Side of Bond Drawdowns
October 27, 2023
BND
Bright Side of Bond Drawdowns
October 27, 2023
BND
ETF Insights: Top 5 Fund Flows and Segments for July 2023
August 9, 2023
BND
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