ISTBvsSPIBETF Comparison
VS
ETF 2
SPIB
State Street SPDR Portfolio Intermediate Term Corporate Bond ETF
This fund is part of
US Corporate IG Bonds
+0.51%
iShares Core 1-5 Year USD Bond ETF (ISTB) belongs to the US Aggregate Bonds segment. State Street SPDR Portfolio Intermediate Term Corporate Bond ETF (SPIB) is part of the US Corporate IG Bonds segment. ISTB's top 3 sector exposures are Sovereign, Finance and Industrials. In contrast, SPIB's top sector exposures are Finance, Technology and Utilities. ISTB is more expensive with a Total Expense Ratio (TER) of 0.06%, versus 0.04% for SPIB. ISTB is up 0.59% year-to-date (YTD) with +$765M in YTD flows. SPIB performs worse with -0.31% YTD performance, and +$948M in YTD flows. Run a side-by-side ETF comparison of ISTB and SPIB 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 SPIB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/22/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | ISTB SPIB | +0.32%+0.05% | +0.07%-0.51% | +0.59%-0.31% | +1.18%+0.11% | +15.96%+19.73% | +10.49%+8.84% |
| Flows | ISTB SPIB | +$208M+$362M | +$312M+$320M | +$765M+$948M | +$892M+$1.23B | +$1.25B+$4.90B | -$396M+$6.26B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | ISTB SPIB | +2.04%+3.30% | +1.81%+2.86% | +2.14%+3.38% | +2.68%+4.21% |
| Max drawdown | ISTB SPIB | -1.51%-2.38% | -1.51%-2.77% | -1.51%-2.77% | -8.72%-13.94% |
| Max drawdown duration | ISTB SPIB | 58d58d | 58d235d | 58d235d | 968d998d |
Trading data
ISTB | SPIB | |
Last sale 10/23/2026 at 1:30 PM | $47.44 | $32.54 |
| Previous close 10/22/2026 | $47.47 | $32.58 |
| Consolidated volume 10/22/2026 | ||
| 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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ISTB | SPIB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/23/2026 at 1:30 PM
Live
Closed
ISTB | SPIB | |
|---|---|---|
| Last price | $47.44 | $32.54 |
| 1D performance | -0.06% | -0.12% |
| AuM | $5.34 B | $11.55 B |
| E/R | 0.06% | 0.04% |
Characteristics
ISTB | SPIB | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | State Street Investment Management |
| Benchmark | Bloomberg U.S. Universal 1-5 Year Index | Bloomberg U.S. Intermediate Corporate Bond Index |
| N° of holdings | 6956 | 5185 |
| Asset class | Bonds | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | October 18, 2012 | February 10, 2009 |
| ESG | No | No |
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Exposure
Countries
ISTB
USA
77.86%
Other
22.14%
SPIB
USA
80.24%
Other
19.76%
Sectors
ISTB
Sovereign
54.43%
Finance
18.71%
Other
26.86%
SPIB
Finance
41.01%
Technology
8.69%
Utilities
8.28%
Other
42.02%
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Diversification
ISTB
Total weight of top 15 holdings out of 15
12.68%
SPIB
Total weight of top 15 holdings out of 15
3.62%
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%
SPIB
Morgan Stanley Bank, N.A., 5.016% 12jan2029, USD (A)
0.43%
Toronto-Dominion Bank, 4.847% 27jul2029, USD (F)
0.32%
Amazon.com, 4.8% 9jul2031, USD
0.30%
Royal Bank of Canada, 4.95% 5aug2032, USD
0.27%
US00287YEK10
0.24%
US404280FS32
0.23%
US69371RU617
0.22%
JP Morgan, 5.193% 5feb2037, USD
0.21%
Broadcom Inc, 4.35% 15feb2030, USD
0.21%
Accenture, 4.75% 10jul2029, USD
0.21%
Citigroup, 5.411% 19sep2039, USD
0.20%
Space Exploration Technologies, 5.875% 15jul2036, USD
0.20%
Citibank N.A., 4.846% 18jun2032, USD
0.20%
US63743HGH93
0.20%
NVIDIA, 4.5% 15jun2031, USD
0.19%
Frequently asked questions about ISTB and SPIB
How have the ISTB and SPIB ETFs performed in 2026?
As of October 22, 2026, ISTB is up 0.59% year-to-date (YTD), while SPIB has lost -0.31%. That puts ISTB better performer ahead so far this year.
Which ETF is attracting more investor money: ISTB or SPIB?
Year-to-date, the ISTB ETF saw +$765M in flows, compared to +$948M for SPIB.
Which ETF is more volatile: ISTB or SPIB?
Over the past year, ISTB had a volatility of 1.81%, while SPIB experienced 2.86%.
Which ETF is bigger: ISTB or SPIB?
As of October 22, 2026, ISTB holds $5.34 B in assets under management (AUM), while SPIB manages $11.55 B.
What sectors do the ISTB and SPIB ETFs invest in?
ISTB leans toward sectors like Sovereign and Finance. Meanwhile, SPIB focuses on Finance, Technology and Utilities.
What are the top holdings of the ISTB ETF and SPIB 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. SPIB holds in its top three: Morgan Stanley Bank, N.A., 5.016% 12jan2029, USD (A), Toronto-Dominion Bank, 4.847% 27jul2029, USD (F) and Amazon.com, 4.8% 9jul2031, USD.
Which ETF is more diversified: ISTB or SPIB?
ISTB holds 7351 securities with 12.68% of its assets in the top 15. SPIB has 5309 securities and a top 15 weight of 3.62%.
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