ISTBvsFISRETF Comparison
VS
ETF 2
FISR
State Street SPDR Fixed Income Sector Rotation ETF
This fund is part of
Intl Aggregate Bonds
-0.14%
iShares Core 1-5 Year USD Bond ETF (ISTB) belongs to the US Aggregate Bonds segment. State Street SPDR Fixed Income Sector Rotation ETF (FISR) is part of the Intl Aggregate Bonds segment. Both ETFs have the same top 3 sector exposures: Sovereign, Finance and Industrials. ISTB is less expensive with a Total Expense Ratio (TER) of 0.06%, versus 0.5% for FISR. ISTB is up 0.85% year-to-date (YTD) with +$515M in YTD flows. FISR performs worse with -0.56% YTD performance, and +$284M in YTD flows. Run a side-by-side ETF comparison of ISTB and FISR 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 FISR performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/08/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | ISTB FISR | -0.01%-0.22% | +0.55%-0.56% | +0.85%-0.56% | +1.97%+0.11% | +15.84%+11.91% | +9.89%-6.47% |
| Flows | ISTB FISR | +$9M+$138M | +$235M+$227M | +$515M+$284M | +$774M+$362M | +$888M+$467M | -$448M+$575M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | ISTB FISR | +1.75%+4.08% | +1.65%+4.08% | +2.15%+5.46% | +2.66%+6.57% |
| Max drawdown | ISTB FISR | -0.46%-1.83% | -1.28%-3.09% | -1.30%-5.02% | -9.24%-19.98% |
| Max drawdown duration | ISTB FISR | 28d72d | 156d192d | 133d322d | 1030d1813d |
Trading data
ISTB | FISR | |
Last sale 9/10/2026 at 1:30 PM | $47.55 | $24.85 |
| Previous close 09/09/2026 | $47.74 | $25.00 |
| Consolidated volume 09/09/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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FISR
is actively managed and doesn’t replicate an indexISTB | FISR | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/10/2026 at 1:30 PM
Live
Closed
ISTB | FISR | |
|---|---|---|
| Last price | $47.55 | $24.85 |
| 1D performance | -0.40% | -0.60% |
| AuM | $5.12 B | $627.02 M |
| E/R | 0.06% | 0.5% |
Characteristics
ISTB | FISR | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | State Street Investment Management |
| Benchmark | Bloomberg U.S. Universal 1-5 Year Index | - |
| N° of holdings | 7074 | 7404 |
| Asset class | Bonds | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | October 18, 2012 | April 2, 2019 |
| ESG | No | No |
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Exposure
Countries
ISTB
USA
78.76%
Other
21.24%
FISR
USA
79.87%
Other
20.13%
Sectors
ISTB
Sovereign
54.84%
Finance
19.07%
Other
26.09%
FISR
Sovereign
49.7%
Finance
10.46%
Industrials
7.16%
Other
32.68%
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Diversification
ISTB
Total weight of top 15 holdings out of 15
12.12%
FISR
Total weight of top 15 holdings out of 15
6.27%
Top 15 holdings
Data as of July 31, 2026
ISTB
USA, Notes 3.875% 15jun2028, USD (AP-2028)
1.08%
BlackRock Cash Funds - Institutional
1.03%
USA, Notes 4% 28feb2030, USD (H-2030)
0.92%
USA, Notes 3.625% 31oct2030, USD (AF-2030)
0.89%
USA, Notes 3.5% 30nov2030, USD (AG-2030)
0.84%
USA, Notes 3.75% 31jan2031, USD (U-2031)
0.83%
USA, Notes 3.625% 30sep2030, USD (AD-2030)
0.80%
USA, Notes 3.625% 31aug2030, USD (AC-2030)
0.80%
USA, Notes 4% 31may2030, USD (Z-2030)
0.76%
USA, Notes 4% 31jul2029, USD (AB-2029)
0.75%
USA, Notes 4.125% 31oct2029, USD (AF-2029)
0.75%
USA, Notes 3.875% 15jul2028, USD (AQ-2028)
0.74%
USA, Notes 4.5% 31may2029, USD (Z-2029)
0.65%
USA, Notes 4.25% 30jun2029, USD (AA-2029)
0.65%
USA, Notes 4.25% 31jan2030, USD (U-2030)
0.64%
FISR
US78468R4240
1.02%
USA, Notes 4.625% 15feb2035, USD (B-2035)
0.41%
USA, Notes 4.25% 15aug2035, USD (E-2035)
0.40%
USA, Notes 4.25% 15nov2034, USD (F-2034)
0.40%
USA, Notes 4.25% 15may2035, USD (C-2035)
0.40%
USA, Notes 4.375% 15may2034, USD (C-2034)
0.39%
USA, Notes 4% 15feb2034, USD (B-2034)
0.39%
USA, Notes 4.5% 15nov2033, USD (F-2033)
0.38%
USA, Notes 3.875% 15aug2034, USD (E-2034)
0.37%
USA, Notes 4% 15nov2035, USD (F-2035)
0.37%
USA, Notes 4% 28feb2030, USD (H-2030)
0.36%
USA, Notes 4.125% 15feb2036, USD (B-2036)
0.36%
USA, Notes 2.75% 15aug2032, USD (E-2032)
0.35%
USA, Notes 3.875% 15aug2033, USD (E-2033)
0.34%
USA, Notes 4.125% 15nov2032, USD (F-2032)
0.34%
Frequently asked questions about ISTB and FISR
How have the ISTB and FISR ETFs performed in 2026?
As of September 8, 2026, ISTB is up 0.85% year-to-date (YTD), while FISR has lost -0.56%. That puts ISTB better performer ahead so far this year.
Which ETF is attracting more investor money: ISTB or FISR?
Year-to-date, the ISTB ETF saw +$515M in flows, compared to +$284M for FISR.
Which ETF is more volatile: ISTB or FISR?
Over the past year, ISTB had a volatility of 1.65%, while FISR experienced 4.08%.
Which ETF is bigger: ISTB or FISR?
As of September 8, 2026, ISTB holds $5.12 B in assets under management (AUM), while FISR manages $627.02 M.
What sectors do the ISTB and FISR ETFs invest in?
ISTB leans toward sectors like Sovereign and Finance. Meanwhile, FISR focuses on Sovereign, Finance and Industrials.
What are the top holdings of the ISTB ETF and FISR ETF?
ISTB top holdings include USA, Notes 3.875% 15jun2028, USD (AP-2028), BlackRock Cash Funds - Institutional and USA, Notes 4% 28feb2030, USD (H-2030). FISR holds in its top three: US78468R4240, USA, Notes 4.625% 15feb2035, USD (B-2035) and USA, Notes 4.25% 15aug2035, USD (E-2035).
Which ETF is more diversified: ISTB or FISR?
ISTB holds 7395 securities with 12.12% of its assets in the top 15. FISR has 9588 securities and a top 15 weight of 6.27%.
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