SSFEX vs. VUBFX
Compare and contrast key facts about State Street Aggregate Bond Index Fund Class K (SSFEX) and Vanguard Ultra-Short-Term Bond Fund Investor Shares (VUBFX).
SSFEX is managed by State Street. VUBFX is managed by Vanguard. It was launched on Feb 24, 2015.
Performance
SSFEX vs. VUBFX - Performance Comparison
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SSFEX vs. VUBFX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SSFEX State Street Aggregate Bond Index Fund Class K | 0.03% | 6.80% | 1.35% | 5.61% | -13.19% | -1.78% | -89.22% | 9.45% | -0.10% | 3.30% |
VUBFX Vanguard Ultra-Short-Term Bond Fund Investor Shares | 0.59% | 5.04% | 5.99% | 5.43% | -0.53% | 0.03% | 1.95% | 3.34% | 1.94% | 1.23% |
Returns By Period
In the year-to-date period, SSFEX achieves a 0.03% return, which is significantly lower than VUBFX's 0.59% return. Over the past 10 years, SSFEX has underperformed VUBFX with an annualized return of -19.26%, while VUBFX has yielded a comparatively higher 2.56% annualized return.
SSFEX
- 1D
- 0.20%
- 1M
- -1.33%
- YTD
- 0.03%
- 6M
- 0.78%
- 1Y
- 4.04%
- 3Y*
- 3.49%
- 5Y*
- 0.13%
- 10Y*
- -19.26%
VUBFX
- 1D
- 0.00%
- 1M
- -0.10%
- YTD
- 0.59%
- 6M
- 1.62%
- 1Y
- 4.31%
- 3Y*
- 5.24%
- 5Y*
- 3.26%
- 10Y*
- 2.56%
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SSFEX vs. VUBFX - Expense Ratio Comparison
SSFEX has a 0.03% expense ratio, which is lower than VUBFX's 0.20% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Return for Risk
SSFEX vs. VUBFX — Risk / Return Rank
SSFEX
VUBFX
SSFEX vs. VUBFX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for State Street Aggregate Bond Index Fund Class K (SSFEX) and Vanguard Ultra-Short-Term Bond Fund Investor Shares (VUBFX). 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.
| SSFEX | VUBFX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.03 | 5.18 | -4.14 |
Sortino ratioReturn per unit of downside risk | 1.48 | 10.17 | -8.69 |
Omega ratioGain probability vs. loss probability | 1.18 | 3.60 | -2.42 |
Calmar ratioReturn relative to maximum drawdown | 1.81 | 14.46 | -12.66 |
Martin ratioReturn relative to average drawdown | 4.96 | 65.22 | -60.26 |
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
| SSFEX | VUBFX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.03 | 5.18 | -4.14 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.02 | 3.34 | -3.32 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | -0.61 | 3.07 | -3.68 |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.56 | 3.06 | -3.62 |
Correlation
The correlation between SSFEX and VUBFX is 0.39, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
SSFEX vs. VUBFX - Dividend Comparison
SSFEX's dividend yield for the trailing twelve months is around 4.03%, less than VUBFX's 4.12% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SSFEX State Street Aggregate Bond Index Fund Class K | 4.03% | 3.66% | 3.76% | 3.14% | 2.48% | 3.32% | 9.59% | 3.56% | 2.79% | 2.43% | 2.19% | 4.67% |
VUBFX Vanguard Ultra-Short-Term Bond Fund Investor Shares | 4.12% | 4.62% | 5.42% | 4.06% | 1.28% | 0.43% | 1.52% | 2.58% | 2.13% | 1.43% | 0.98% | 0.00% |
Drawdowns
SSFEX vs. VUBFX - Drawdown Comparison
The maximum SSFEX drawdown since its inception was -92.70%, which is greater than VUBFX's maximum drawdown of -1.86%. Use the drawdown chart below to compare losses from any high point for SSFEX and VUBFX.
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Drawdown Indicators
| SSFEX | VUBFX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -92.70% | -1.86% | -90.84% |
Max Drawdown (1Y)Largest decline over 1 year | -2.52% | -0.30% | -2.22% |
Max Drawdown (5Y)Largest decline over 5 years | -17.99% | -1.86% | -16.13% |
Max Drawdown (10Y)Largest decline over 10 years | -92.70% | -1.86% | -90.84% |
Current DrawdownCurrent decline from peak | -90.09% | -0.10% | -89.99% |
Average DrawdownAverage peak-to-trough decline | -47.37% | -0.17% | -47.20% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.92% | 0.07% | +0.85% |
Volatility
SSFEX vs. VUBFX - Volatility Comparison
State Street Aggregate Bond Index Fund Class K (SSFEX) has a higher volatility of 1.59% compared to Vanguard Ultra-Short-Term Bond Fund Investor Shares (VUBFX) at 0.34%. This indicates that SSFEX's price experiences larger fluctuations and is considered to be riskier than VUBFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SSFEX | VUBFX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.59% | 0.34% | +1.25% |
Volatility (6M)Calculated over the trailing 6-month period | 2.50% | 0.55% | +1.95% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.20% | 0.84% | +3.36% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.91% | 0.98% | +4.93% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 31.83% | 0.84% | +30.99% |