SRLNvsIUSBETF Comparison
VS
State Street SPDR Blackstone Senior Loan ETF (SRLN) 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. SRLN is more expensive with a Total Expense Ratio (TER) of 0.7%, versus 0.06% for IUSB. SRLN is up 2.13% year-to-date (YTD) with -$1.08B in YTD flows. IUSB performs worse with -0.97% YTD performance, and +$16.82B in YTD flows. Run a side-by-side ETF comparison of SRLN 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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SRLN vs IUSB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/23/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SRLN IUSB | -1.10%+0.68% | +0.82%-0.55% | +2.13%-0.97% | +3.87%-0.91% | +20.93%+17.81% | +23.35%+0.78% |
| Flows | SRLN IUSB | -$239M+$5.63B | +$48M+$7.53B | -$1.08B+$16.82B | -$928M+$18.27B | +$1.42B+$28.34B | -$1.27B+$37.58B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SRLN IUSB | +1.27%+4.41% | +1.94%+3.74% | +1.94%+4.62% | +2.38%+5.56% |
| Max drawdown | SRLN IUSB | -1.28%-3.24% | -2.99%-4.33% | -3.19%-4.33% | -7.29%-17.40% |
| Max drawdown duration | SRLN IUSB | 31d59d | 105d236d | 71d280d | 554d1406d |
Trading data
SRLN | IUSB | |
Last sale 10/23/2026 at 1:30 PM | $39.80 | $44.70 |
| Previous close 10/22/2026 | $39.86 | $44.77 |
| 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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SRLN
is actively managed and doesn’t replicate an indexSRLN | 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 10/23/2026 at 1:30 PM
Live
Closed
SRLN | IUSB | |
|---|---|---|
| Last price | $39.80 | $44.70 |
| 1D performance | -0.15% | -0.16% |
| AuM | $5.29 B | $49.60 B |
| E/R | 0.7% | 0.06% |
Characteristics
SRLN | IUSB | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | State Street Investment Management | iShares |
| Benchmark | - | Bloomberg U.S. Universal Index |
| N° of holdings | - | 16069 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | April 3, 2013 | June 10, 2014 |
| ESG | No | No |
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Exposure
Countries
SRLN
Data will be available soon
IUSB
USA
72.98%
Other
27.02%
Sectors
SRLN
Data will be available soon
IUSB
Sovereign
42.65%
Finance
13.17%
Other
44.17%
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Diversification
SRLN
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
SRLN
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 SRLN and IUSB
How have the SRLN and IUSB ETFs performed in 2026?
As of October 23, 2026, SRLN is up 2.13% year-to-date (YTD), while IUSB has lost -0.97%. That puts SRLN better performer ahead so far this year.
Which ETF is attracting more investor money: SRLN or IUSB?
Year-to-date, the SRLN ETF saw -$1.08B in flows, compared to +$16.82B for IUSB.
Which ETF is more volatile: SRLN or IUSB?
Over the past year, SRLN had a volatility of 1.94%, while IUSB experienced 3.74%.
Which ETF is bigger: SRLN or IUSB?
As of October 23, 2026, SRLN holds $5.29 B in assets under management (AUM), while IUSB manages $49.60 B.
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