BNDvsIUSBETF Comparison
VS
Vanguard Total Bond Market ETF (BND) and iShares Core Total USD Bond Market ETF (IUSB) belong to the same industry segment: US Aggregate Bonds. Both ETFs have the same top 3 sector exposures: Sovereign, Finance and Industrials. BND is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.06% for IUSB. BND is down -1.15% year-to-date (YTD) with +$26.31B in YTD flows. IUSB performs better with -0.78% YTD performance, and +$16.94B in YTD flows. Run a side-by-side ETF comparison of BND 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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BND vs IUSB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/27/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | BND IUSB | +1.81%+1.70% | -0.56%-0.68% | -1.15%-0.78% | -1.44%-0.95% | +15.89%+17.71% | -1.92%+0.44% |
| Flows | BND IUSB | +$2.98B+$1.55B | +$8.08B+$7.56B | +$26.31B+$16.94B | +$30.95B+$18.31B | +$69.99B+$28.43B | +$100.34B+$37.58B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | BND IUSB | +4.53%+4.39% | +3.87%+3.74% | +4.78%+4.59% | +5.85%+5.56% |
| Max drawdown | BND IUSB | -3.20%-3.24% | -4.85%-4.33% | -4.85%-4.33% | -17.62%-17.40% |
| Max drawdown duration | BND IUSB | 63d63d | 240d240d | 240d280d | 1564d1406d |
Trading data
BND | IUSB | |
Last sale 10/28/2026 at 1:30 PM | $71.19 | $44.69 |
| Previous close 10/27/2026 | $71.31 | $44.79 |
| 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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BND | 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 10/28/2026 at 1:30 PM
Live
Closed
BND | IUSB | |
|---|---|---|
| Last price | $71.19 | $44.69 |
| 1D performance | -0.17% | -0.22% |
| AuM | $166.39 B | $49.81 B |
| E/R | 0.03% | 0.06% |
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Exposure
Countries
BND
USA
76.02%
Other
23.98%
IUSB
USA
72.98%
Other
27.02%
Sectors
BND
Sovereign
48.07%
Finance
10.83%
Industrials
7.38%
Other
33.72%
IUSB
Sovereign
42.65%
Finance
13.17%
Other
44.17%
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Diversification
BND
Total weight of top 15 holdings out of 15
5.83%
IUSB
Total weight of top 15 holdings out of 15
9.55%
Top 15 holdings
Data as of August 31, 2026
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%
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%
Frequently asked questions about BND and IUSB
How have the BND and IUSB ETFs performed in 2026?
As of October 27, 2026, BND is down -1.15% year-to-date (YTD), while IUSB has lost -0.78%. That puts IUSB better performer ahead so far this year.
Which ETF is attracting more investor money: BND or IUSB?
Year-to-date, the BND ETF saw +$26.31B in flows, compared to +$16.94B for IUSB.
Which ETF is more volatile: BND or IUSB?
Over the past year, BND had a volatility of 3.87%, while IUSB experienced 3.74%.
Which ETF is bigger: BND or IUSB?
As of October 27, 2026, BND holds $166.39 B in assets under management (AUM), while IUSB manages $49.81 B.
What sectors do the BND and IUSB ETFs invest in?
BND leans toward sectors like Sovereign, Finance and Industrials. Meanwhile, IUSB focuses on Sovereign and Finance.
What are the top holdings of the BND ETF and IUSB ETF?
BND top holdings include 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). IUSB holds in its top three: BlackRock Liquidity TempCash, USA, Notes 4% 15nov2035, USD (F-2035) and US01F0206957.
Which ETF is more diversified: BND or IUSB?
BND holds 15076 securities with 5.83% of its assets in the top 15. IUSB has 18013 securities and a top 15 weight of 9.55%.
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Latest news about BND & IUSB
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Bright Side of Bond Drawdowns
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