Data as of Oct 28, 2026.
SPSB vs SUSB: Differences, Returns & Fees
SPSB's duration was 1.8 years on Jun 30, 2026 and SUSB's 2.7 on Aug 31, 2026; SPSB charges 0.04% to SUSB's 0.12%.
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Net assets: $11.3bn on Oct 27, 2026 for State Street SPDR Portfolio Short Term Corporate Bond ETF, and $1.3bn on Oct 28, 2026 for iShares ESG Aware 1-5 Year USD Corporate Bond ETF.
Pair scorecard
SPSB costs 0.08 points a year less; their one-year returns differ by 1.0 point; SPSB is 8.6 times larger.
| Measure | SPSB | SUSB |
|---|---|---|
| Return | ||
| Total return, 1 year | +2.2% | +1.2% |
| Benchmark | ||
| What it tracks | Bloomberg U.S. 1-3 Year Corporate Bond Index | Bloomberg MSCI US Corporate 1-5 Year ESG Focus Index |
| Cost and size | ||
| Expense ratio | 0.04% | 0.12% |
| Net assets, as of Oct 26, 2026 | $11.2bn | $1.3bn |
| Holdings | ||
| Holdings in common | 26% | |
Holdings in common uses holdings dated Jun 30, 2026 and Aug 31, 2026. Method
Risk and return
Jul 28, 2017 to Oct 23, 2026 · 482 weekly returnsEach against its own benchmark: SPSB against AGG, Dec 24, 2009 to Oct 23, 2026; SUSB against IUSB, Jul 28, 2017 to Oct 23, 2026.
SPSB returned slightly more: +27.9% to +26.5%. SPSB swung less: 3.9% to 4.7%. SPSB fell less at its worst: −9.9% to −11.4%.
Full scorecard
19 measures, with how each is measured Open ↓
| Measure | SPSB | SUSB | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +27.9% | +26.5% | SPSB (slight) | Price change plus distributions, reinvested. |
| Annualized | +2.7% | +2.6% | SPSB (slight) | Total return as a yearly rate. |
| Price return | −3.3% | −2.3% | SUSB | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 3.9% | 4.7% | SPSB | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 2.7% | 3.3% | SPSB | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −9.9% | −11.4% | SPSB | Deepest fall from a high to the low after it. |
| Upside capture | 30.3% | 52.4% | Share of its benchmark's rise caught in the weeks it rose. | |
| Downside capture | 20.4% | 46.0% | Share of its benchmark's fall taken in the weeks it fell. Lower is better. | |
| Beta | 0.39 | 0.70 | Not an edge | How far it moves for each 1% its benchmark moves. |
| R squared | 0.36 | 0.68 | Not an edge | Share of its weekly moves its benchmark explains. |
| Risk-adjusted | ||||
| Sharpe | 0.02 | 0.00 | SPSB | Return above Treasury bills per unit of volatility. |
| Sortino | 0.03 | −0.01 | SPSB | Return above Treasury bills per unit of downside deviation. |
| Treynor | 0.020 | 0.000 | Return above Treasury bills per unit of beta. | |
| Calmar | 0.27 | 0.22 | SPSB | Annualized return divided by the max drawdown. |
| Against the benchmark | ||||
| Benchmark | AGG | IUSB | The ETF each fund is measured against. | |
| Alpha | +0.4% a year | +0.6% a year | Not significant | Yearly return beyond what its beta to the benchmark predicts. |
| Alpha t-stat | 0.78 | 0.64 | Not an edge | How sure the alpha is. Below 2, it could be chance. |
| Alpha range | −0.7% to +1.6% | −1.1% to +2.2% | Includes zero | The 95% range for the yearly alpha. |
| Information ratio | −0.03 | 0.26 | Return against its benchmark per unit of tracking error. | |
| Tracking error | 3.6% | 3.1% | Not an edge | How far weekly returns stray from the benchmark, annualized. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 482 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, SPSB and SUSB hold 26% of their money in the same securities at the same weight. Holdings dated Jun 30, 2026 and Aug 31, 2026.
half
26% in common
Only in one fund ↓
Side by side
SPSB and SUSB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
SPSB and SUSB are built for the same job. How do they differ in cost, holdings and results?
- What each follows. SPSB follows Bloomberg U.S. 1-3 Year Corporate Bond Index and SUSB follows Bloomberg MSCI US Corporate 1-5 Year ESG Focus Index.
- Holdings in common. 26% of the weight is in the same securities (holdings dated Jun 30, 2026 and Aug 31, 2026).
- Size. SPSB has $11.2bn in net assets and SUSB $1.3bn (net assets, as of Oct 26, 2026); SPSB is 8.6 times larger.
Data as of Oct 28, 2026.
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SPSB
SPSB tracks an index of Short Term Corporate Bond. Over the year to Oct 28, 2026 it returned +2.2% with distributions reinvested, against −1.4% for its benchmark, the Bloomberg U.S. Aggregate Bond Index. The prospectus expense ratio is 0.04% a year.
SUSB
SUSB tracks an index. Over the year to Oct 28, 2026 it returned +1.2% with distributions reinvested, against −1.2% for its benchmark, the Bloomberg U.S. Universal Index. The prospectus expense ratio is 0.12% a year.
Questions people ask
- Which returned more over the last year, SPSB or SUSB?
- In the year to Oct 28, 2026, with distributions reinvested, SPSB returned +2.2% and SUSB +1.2%.
- Which is cheaper, SPSB or SUSB?
- SPSB is cheaper, by 0.08 percentage points a year. That is about $8 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, SPSB against SUSB, data as of Oct 28, 2026. https://etfiq.com/compare/any/spsb-vs-susb
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[SPSB against SUSB (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/spsb-vs-susb)
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