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ABXBvsIUSBETF Comparison

ETF 1
ABXB

Abacus Flexible Bond Leaders ETF

This fund is part of
US Aggregate Bonds
+0.03%
VS
ETF 2
IUSB

iShares Core Total USD Bond Market ETF

This fund is part of
US Aggregate Bonds
+0.03%

Abacus Flexible Bond Leaders ETF (ABXB) and iShares Core Total USD Bond Market ETF (IUSB) belong to the same industry segment: US Aggregate Bonds. In contrast, IUSB's top sector exposures are Sovereign, Finance and Industrials. ABXB is more expensive with a Total Expense Ratio (TER) of 0.82%, versus 0.06% for IUSB. ABXB is down -1.56% year-to-date (YTD) with -$1K in YTD flows. IUSB performs better with -1.42% YTD performance, and +$16.70B in YTD flows. Run a side-by-side ETF comparison of ABXB 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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ABXB vs IUSB performance and flow charts

Performance

-1.5-1.0-0.50.00.5%Sep 16Sep 23Sep 30Oct 7Oct 14

Cumulative Flows

0 B1 B2 B3 B4 B5 B6 BSep 16Sep 23Sep 30Oct 7Oct 14

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Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Historic performance and flows
Data as of 10/16/2026
1M3MYTD1Y3Y5Y
Perf.
ABXB
IUSB
-0.43%-0.19%
-1.64%-1.78%
-1.56%-1.42%
-0.21%-1.37%
+19.03%+16.28%
+3.86%+0.06%
Flows
ABXB
IUSB
-+$6.05B
-+$7.66B
-$1K+$16.70B
-$1K+$18.01B
-$31M+$27.91B
-$72M+$37.54B
Volatility and drawdown
3M1Y3Y5Y
Volatility
ABXB
IUSB
+3.05%+4.15%
+3.70%+3.66%
+4.15%+4.63%
+5.69%+5.55%
Max drawdown
ABXB
IUSB
-2.17%-3.24%
-3.81%-4.33%
-3.81%-4.33%
-16.42%-17.40%
Max drawdown duration
ABXB
IUSB
52d52d
229d229d
229d280d
1261d1406d
Trading data

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ABXB
IUSB
Last sale
10/19/2026 at 1:30 PM
$18.69
$44.33
Previous close
10/16/2026
$18.69
$44.47
Consolidated volume
10/16/2026
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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ABXB
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 10/19/2026 at 1:30 PM
Live
Closed
ABXB
IUSB
Last price
$18.69
$44.33
1D performance
+0.00%
-0.31%
AuM$1.87 M$49.25 B
E/R0.82%0.06%
Characteristics
ABXB
IUSB
Management strategyPassivePassive
ProviderTrimtabs Asset ManagementiShares
BenchmarkFCF Tactical High Yield IndexBloomberg U.S. Universal Index
N° of holdings-16069
Asset classFixed IncomeBonds
Trailing 12m distribution yield
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Inception dateDecember 8, 2020June 10, 2014
ESGNoNo
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Exposure

Countries

ABXB
Data will be available soon
IUSB
USA
72.98%
Other
27.02%

Sectors

ABXB
Data will be available soon
IUSB
Sovereign
42.65%
Finance
13.17%
Other
44.17%

Diversification

ABXB
Data will be available soon
IUSB

Total weight of top 15 holdings out of 15

9.55%

Top 15 holdings

Data as of January 1, 1970
ABXB
Data will be available soon
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 ABXB and IUSB

How have the ABXB and IUSB ETFs performed in 2026?

As of October 16, 2026, ABXB is down -1.56% year-to-date (YTD), while IUSB has lost -1.42%. That puts IUSB better performer ahead so far this year.

Which ETF is attracting more investor money: ABXB or IUSB?

Year-to-date, the ABXB ETF saw -$1K in flows, compared to +$16.70B for IUSB.

Which ETF is more volatile: ABXB or IUSB?

Over the past year, ABXB had a volatility of 3.7%, while IUSB experienced 3.66%.

Which ETF is bigger: ABXB or IUSB?

As of October 16, 2026, ABXB holds $1.87 M in assets under management (AUM), while IUSB manages $49.25 B.

Latest news about ABXB & IUSB
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