ULST vs. SPHY
ULST (State Street Ultra Short Term Bond ETF) and SPHY (SPDR Portfolio High Yield Bond ETF) are both exchange-traded funds - ULST is a Ultrashort Bond fund tracking the Bloomberg US Treasury Bellwether 3 Month Index, while SPHY is a High Yield Bonds fund tracking the ICE BofA US High Yield Index. Both are passively managed. Over the past 10 years, ULST returned 2.67%/yr vs 5.15%/yr for SPHY. At a 0.08 correlation, their price movements are largely independent. ULST charges 0.20%/yr vs 0.05%/yr for SPHY.
Performance
ULST vs. SPHY - Performance Comparison
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Returns By Period
In the year-to-date period, ULST achieves a 1.24% return, which is significantly lower than SPHY's 1.54% return. Over the past 10 years, ULST has underperformed SPHY with an annualized return of 2.67%, while SPHY has yielded a comparatively higher 5.15% annualized return.
ULST
- 1D
- -0.02%
- 1M
- 0.33%
- YTD
- 1.24%
- 6M
- 1.57%
- 1Y
- 3.99%
- 3Y*
- 4.92%
- 5Y*
- 3.51%
- 10Y*
- 2.67%
SPHY
- 1D
- -0.21%
- 1M
- 0.42%
- YTD
- 1.54%
- 6M
- 1.93%
- 1Y
- 7.16%
- 3Y*
- 8.97%
- 5Y*
- 4.39%
- 10Y*
- 5.15%
ULST vs. SPHY - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
ULST State Street Ultra Short Term Bond ETF | 1.24% | 4.80% | 5.23% | 5.60% | 0.87% | 0.25% | 1.45% | 3.23% | 2.04% | 1.19% |
SPHY SPDR Portfolio High Yield Bond ETF | 1.54% | 8.59% | 8.54% | 12.81% | -10.57% | 5.61% | 6.65% | 13.16% | -3.35% | 7.35% |
Correlation
The correlation between ULST and SPHY is 0.29, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.29 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.29 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.21 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.09 |
Correlation (All Time) Calculated using the full available price history since Oct 11, 2013 | 0.08 |
Over the past year, ULST and SPHY have become more correlated (0.29) than their long-term average of 0.08, meaning their price movements have been converging.
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Return for Risk
ULST vs. SPHY — Risk / Return Rank
ULST
SPHY
ULST vs. SPHY - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for State Street Ultra Short Term Bond ETF (ULST) and SPDR Portfolio High Yield Bond ETF (SPHY). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| ULST | SPHY | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +4.18 | ||
| Sortino ratioReturn per unit of downside risk | +9.32 | ||
| Omega ratioGain probability vs. loss probability | 2.77 | 1.39 | +1.38 |
| Calmar ratioReturn relative to maximum drawdown | 16.92 | 2.98 | +13.93 |
| Martin ratioReturn relative to average drawdown | 87.49 | 13.52 | +73.98 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| ULST | SPHY | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 6.14 | 1.96 | +4.18 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 3.67 | 0.62 | +3.05 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 1.86 | 0.65 | +1.20 |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.50 | 0.64 | +0.86 |
Drawdowns
ULST vs. SPHY - Drawdown Comparison
The maximum ULST drawdown since its inception was -6.20%, smaller than the maximum SPHY drawdown of -21.97%. Use the drawdown chart below to compare losses from any high point for ULST and SPHY.
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Drawdown Indicators
| ULST | SPHY | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -6.20% | -21.97% | +15.77% |
Max Drawdown (1Y)Largest decline over 1 year | -0.24% | -2.41% | +2.17% |
Max Drawdown (3Y)Largest decline over 3 years | -0.54% | -4.85% | +4.31% |
Max Drawdown (5Y)Largest decline over 5 years | -1.22% | -15.29% | +14.07% |
Max Drawdown (10Y)Largest decline over 10 years | -6.20% | -21.97% | +15.77% |
Current DrawdownCurrent decline from peak | -0.05% | -0.22% | +0.17% |
Average DrawdownAverage peak-to-trough decline | -0.16% | -2.29% | +2.13% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.05% | 0.53% | -0.48% |
Volatility
ULST vs. SPHY - Volatility Comparison
The current volatility for State Street Ultra Short Term Bond ETF (ULST) is 0.18%, while SPDR Portfolio High Yield Bond ETF (SPHY) has a volatility of 1.14%. This indicates that ULST experiences smaller price fluctuations and is considered to be less risky than SPHY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| ULST | SPHY | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.18% | 1.14% | -0.96% |
Volatility (6M)Calculated over the trailing 6-month period | 0.43% | 2.91% | -2.48% |
Volatility (1Y)Calculated over the trailing 1-year period | 0.65% | 3.68% | -3.03% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 0.96% | 7.17% | -6.21% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.45% | 7.89% | -6.44% |
ULST vs. SPHY - Expense Ratio Comparison
ULST has a 0.20% expense ratio, which is higher than SPHY's 0.05% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
ULST vs. SPHY - Dividend Comparison
ULST's dividend yield for the trailing twelve months is around 4.29%, less than SPHY's 7.27% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SPHY SPDR Portfolio High Yield Bond ETF | 7.27% | 7.38% | 7.80% | 7.30% | 6.47% | 5.13% | 5.63% | 5.73% | 4.09% | 4.41% | 4.27% | 4.29% |
ULST State Street Ultra Short Term Bond ETF | 4.29% | 4.46% | 5.03% | 4.45% | 1.70% | 0.54% | 1.34% | 2.56% | 2.13% | 1.21% | 0.93% | 0.37% |
Frequently Asked Questions
ULST and SPHY have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
SPHY has higher volatility (1.14%) compared to ULST (0.18%). In terms of maximum drawdown, ULST dropped -6.20% vs SPHY's -21.97%.
On 10-year performance, SPHY leads with 5.15% vs 2.67% for ULST. On fees, SPHY is cheaper at 0.05% per year. On volatility, ULST has been the lower-risk option at 0.18%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, SPHY has performed better with a 5.15% return vs 2.67%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
SPHY is cheaper with a 0.05% expense ratio, compared with 0.20% for ULST.
SPHY has the higher dividend yield at 7.27%, compared with 4.29% for ULST.
ULST is categorized as Ultrashort Bond, while SPHY is High Yield Bonds. ULST tracks Bloomberg US Treasury Bellwether 3 Month Index, while SPHY tracks ICE BofA US High Yield Index. Their fees differ too: 0.20% for ULST and 0.05% for SPHY.
ULST currently has the higher Sharpe Ratio (6.14 vs 1.96), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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