SSFEX vs. ELFNX
Compare and contrast key facts about State Street Aggregate Bond Index Fund Class K (SSFEX) and Elfun Trusts (ELFNX).
SSFEX is managed by State Street. ELFNX is managed by State Street. It was launched on May 27, 1935.
Performance
SSFEX vs. ELFNX - Performance Comparison
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SSFEX vs. ELFNX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SSFEX State Street Aggregate Bond Index Fund Class K | -0.17% | 6.80% | 1.35% | 5.61% | -13.19% | -1.78% | -89.22% | 9.45% | -0.10% | 3.30% |
ELFNX Elfun Trusts | -9.40% | 16.64% | 26.91% | 34.50% | -19.91% | 24.46% | 25.18% | 35.57% | -3.25% | 25.60% |
Returns By Period
In the year-to-date period, SSFEX achieves a -0.17% return, which is significantly higher than ELFNX's -9.40% return. Over the past 10 years, SSFEX has underperformed ELFNX with an annualized return of -19.27%, while ELFNX has yielded a comparatively higher 14.84% annualized return.
SSFEX
- 1D
- 0.53%
- 1M
- -1.96%
- YTD
- -0.17%
- 6M
- 0.82%
- 1Y
- 4.12%
- 3Y*
- 3.42%
- 5Y*
- 0.17%
- 10Y*
- -19.27%
ELFNX
- 1D
- -0.21%
- 1M
- -7.68%
- YTD
- -9.40%
- 6M
- -6.55%
- 1Y
- 12.68%
- 3Y*
- 18.88%
- 5Y*
- 10.93%
- 10Y*
- 14.84%
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SSFEX vs. ELFNX - Expense Ratio Comparison
SSFEX has a 0.03% expense ratio, which is lower than ELFNX's 0.18% 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. ELFNX — Risk / Return Rank
SSFEX
ELFNX
SSFEX vs. ELFNX - 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 Elfun Trusts (ELFNX). 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 | ELFNX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.04 | 0.71 | +0.33 |
Sortino ratioReturn per unit of downside risk | 1.49 | 1.13 | +0.36 |
Omega ratioGain probability vs. loss probability | 1.18 | 1.16 | +0.02 |
Calmar ratioReturn relative to maximum drawdown | 1.96 | 0.93 | +1.03 |
Martin ratioReturn relative to average drawdown | 5.43 | 3.55 | +1.88 |
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 | ELFNX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.04 | 0.71 | +0.33 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.03 | 0.61 | -0.59 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | -0.61 | 0.81 | -1.42 |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.56 | 0.58 | -1.14 |
Correlation
The correlation between SSFEX and ELFNX is -0.07. This indicates that the assets' prices tend to move in opposite directions. Negative correlation can be particularly beneficial for diversification and risk management, as one asset may offset the losses of the other during market fluctuations.
Dividends
SSFEX vs. ELFNX - Dividend Comparison
SSFEX's dividend yield for the trailing twelve months is around 4.04%, less than ELFNX's 10.89% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SSFEX State Street Aggregate Bond Index Fund Class K | 4.04% | 3.66% | 3.76% | 3.14% | 2.48% | 3.32% | 9.59% | 3.56% | 2.79% | 2.43% | 2.19% | 4.67% |
ELFNX Elfun Trusts | 10.89% | 9.87% | 10.43% | 2.90% | 9.01% | 11.62% | 8.60% | 9.39% | 16.18% | 10.80% | 8.85% | 8.22% |
Drawdowns
SSFEX vs. ELFNX - Drawdown Comparison
The maximum SSFEX drawdown since its inception was -92.70%, which is greater than ELFNX's maximum drawdown of -50.28%. Use the drawdown chart below to compare losses from any high point for SSFEX and ELFNX.
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Drawdown Indicators
| SSFEX | ELFNX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -92.70% | -50.28% | -42.42% |
Max Drawdown (1Y)Largest decline over 1 year | -2.52% | -11.48% | +8.96% |
Max Drawdown (5Y)Largest decline over 5 years | -17.99% | -26.39% | +8.40% |
Max Drawdown (10Y)Largest decline over 10 years | -92.70% | -32.44% | -60.26% |
Current DrawdownCurrent decline from peak | -90.11% | -11.40% | -78.71% |
Average DrawdownAverage peak-to-trough decline | -47.36% | -7.65% | -39.71% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.91% | 3.01% | -2.10% |
Volatility
SSFEX vs. ELFNX - Volatility Comparison
The current volatility for State Street Aggregate Bond Index Fund Class K (SSFEX) is 1.61%, while Elfun Trusts (ELFNX) has a volatility of 4.40%. This indicates that SSFEX experiences smaller price fluctuations and is considered to be less risky than ELFNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SSFEX | ELFNX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.61% | 4.40% | -2.79% |
Volatility (6M)Calculated over the trailing 6-month period | 2.50% | 9.57% | -7.07% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.20% | 18.37% | -14.17% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.91% | 17.87% | -11.96% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 31.83% | 18.35% | +13.48% |