ISTBvsHYSAETF Comparison
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iShares Core 1-5 Year USD Bond ETF (ISTB) belongs to the US Aggregate Bonds segment. Bondbloxx USD High Yield Income ETF (HYSA) is part of the US Corporate HY Bonds segment. ISTB's top 3 sector exposures are Sovereign, Finance and Industrials. In contrast, HYSA's top sector exposures are Finance, Industrials and Consumer Services. ISTB is less expensive with a Total Expense Ratio (TER) of 0.06%, versus 1.11% for HYSA. ISTB is up 0.53% year-to-date (YTD) with +$765M in YTD flows. HYSA performs worse with -0.54% YTD performance, and +$81M in YTD flows. Run a side-by-side ETF comparison of ISTB and HYSA 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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ISTB vs HYSA performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/23/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | ISTB HYSA | +0.65%-1.01% | +0.13%-1.24% | +0.53%-0.54% | +1.21%+0.61% | +15.88%+25.09% | +10.33%n/a |
| Flows | ISTB HYSA | +$208M+$33M | +$303M+$47M | +$765M+$81M | +$892M+$82M | +$1.25B+$81M | -$427M- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | ISTB HYSA | +2.03%+3.43% | +1.81%+3.21% | +2.14%+4.44% | +2.68%n/a |
| Max drawdown | ISTB HYSA | -1.51%-2.81% | -1.51%-2.81% | -1.51%-4.49% | -8.72%n/a |
| Max drawdown duration | ISTB HYSA | 59d59d | 59d59d | 59d68d | 968dn/a |
Trading data
ISTB | HYSA | |
Last sale 10/26/2026 at 1:30 PM | $47.41 | $14.38 |
| Previous close 10/23/2026 | $47.44 | $14.35 |
| Consolidated volume 10/23/2026 | ||
| 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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HYSA
is actively managed and doesn’t replicate an indexISTB | HYSA | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/26/2026 at 1:30 PM
Live
Closed
ISTB | HYSA | |
|---|---|---|
| Last price | $47.41 | $14.38 |
| 1D performance | -0.06% | +0.17% |
| AuM | $5.33 B | $109.46 M |
| E/R | 0.06% | 1.11% |
Characteristics
ISTB | HYSA | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | Bondbloxx Investment Management LLC |
| Benchmark | Bloomberg U.S. Universal 1-5 Year Index | - |
| N° of holdings | 6956 | 2224 |
| Asset class | Bonds | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | October 18, 2012 | September 18, 2023 |
| ESG | No | No |
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Exposure
Countries
ISTB
USA
77.86%
Other
22.14%
HYSA
USA
79.93%
Other
20.07%
Sectors
ISTB
Sovereign
54.43%
Finance
18.71%
Other
26.86%
HYSA
Finance
16.69%
Industrials
11.46%
Consumer Services
10.75%
Energy
8.47%
Non-Energy Materi.
8.47%
Business Services
7.06%
Other
37.09%
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Diversification
ISTB
Total weight of top 15 holdings out of 15
12.68%
HYSA
Total weight of top 15 holdings out of 15
3.79%
Top 15 holdings
Data as of August 31, 2026
ISTB
USA, Notes 3.875% 15jun2028, USD (AP-2028)
1.09%
USA, Notes 4.125% 30jun2031, USD (AA-2031)
1.06%
BlackRock Cash Funds - Institutional
1.06%
USA, Notes 4% 28feb2030, USD (H-2030)
0.91%
USA, Notes 3.625% 31oct2030, USD (AF-2030)
0.89%
USA, Notes 4.375% 31jul2031, USD (AB-2031)
0.87%
USA, Notes 3.5% 30nov2030, USD (AG-2030)
0.84%
USA, Notes 3.75% 31jan2031, USD (U-2031)
0.81%
USA, Notes 3.625% 30sep2030, USD (AD-2030)
0.81%
USA, Notes 3.625% 31aug2030, USD (AC-2030)
0.79%
USA, Notes 4% 31may2030, USD (Z-2030)
0.77%
USA, Notes 3.875% 15jul2028, USD (AQ-2028)
0.75%
USA, Notes 4% 31jul2029, USD (AB-2029)
0.74%
USA, Notes 4.5% 31may2029, USD (Z-2029)
0.66%
USA, Notes 4.25% 30jun2029, USD (AA-2029)
0.65%
HYSA
EchoStar, 10.75% 30nov2029, USD
0.45%
Meridian Arc HoldCo, 6.25% 30apr2031, USD
0.31%
Cloud Software Group, 6.5% 31mar2029, USD
0.29%
Cloud Software Group, 9% 30sep2029, USD
0.28%
Hub International, 7.25% 15jun2030, USD
0.26%
RP Escrow Issuer, 7.125% 1jun2031, USD
0.25%
PR RNO Property Owner 1, 6.5% 1may2031, USD
0.25%
Quikrete Holdings, 6.375% 1mar2032, USD
0.23%
Asurion LLC, 8.375% 1feb2034, USD
0.23%
Neptune BidCo US, 9.29% 15apr2029, USD
0.21%
TransDigm, 6.375% 31may2033, USD
0.21%
Mauser Packaging Solutions, 7.875% 15apr2030, USD
0.21%
Oak-Eagle AcquireCo, 8.75% 1jul2034, USD
0.20%
SV RNO Property Owner 1, 5.875% 1mar2031, USD
0.20%
Galaxy Helios Data Center II, 9.875% 1aug2031, USD
0.20%
Frequently asked questions about ISTB and HYSA
How have the ISTB and HYSA ETFs performed in 2026?
As of October 23, 2026, ISTB is up 0.53% year-to-date (YTD), while HYSA has lost -0.54%. That puts ISTB better performer ahead so far this year.
Which ETF is attracting more investor money: ISTB or HYSA?
Year-to-date, the ISTB ETF saw +$765M in flows, compared to +$81M for HYSA.
Which ETF is more volatile: ISTB or HYSA?
Over the past year, ISTB had a volatility of 1.81%, while HYSA experienced 3.21%.
Which ETF is bigger: ISTB or HYSA?
As of October 23, 2026, ISTB holds $5.33 B in assets under management (AUM), while HYSA manages $109.46 M.
What sectors do the ISTB and HYSA ETFs invest in?
ISTB leans toward sectors like Sovereign and Finance. Meanwhile, HYSA focuses on Finance, Industrials and Consumer Services.
What are the top holdings of the ISTB ETF and HYSA ETF?
ISTB top holdings include USA, Notes 3.875% 15jun2028, USD (AP-2028), USA, Notes 4.125% 30jun2031, USD (AA-2031) and BlackRock Cash Funds - Institutional. HYSA holds in its top three: EchoStar, 10.75% 30nov2029, USD, Meridian Arc HoldCo, 6.25% 30apr2031, USD and Cloud Software Group, 6.5% 31mar2029, USD.
Which ETF is more diversified: ISTB or HYSA?
ISTB holds 7351 securities with 12.68% of its assets in the top 15. HYSA has 2306 securities and a top 15 weight of 3.79%.
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