SSAFX vs. SSASX
SSAFX (State Street Aggregate Bond Index Portfolio) and SSASX (State Street Income Fund) are both mutual funds - SSAFX is a Intermediate Core Bond fund managed by State Street, while SSASX is a Intermediate Core-Plus Bond fund managed by State Street. Over the past 5 years, SSAFX returned -0.52%/yr vs -1.29%/yr for SSASX. Their 0.97 correlation means they have historically moved very closely together. SSAFX charges 0.02%/yr vs 0.20%/yr for SSASX.
Performance
SSAFX vs. SSASX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, SSAFX achieves a -0.61% return, which is significantly higher than SSASX's -1.33% return.
SSAFX
- 1D
- -0.27%
- 1M
- -1.14%
- 6M
- -0.69%
- YTD
- -0.61%
- 1Y
- 1.86%
- 3Y*
- 3.79%
- 5Y*
- -0.52%
- 10Y*
- 27.53%
- ALL TIME*
- 23.53%
SSASX
- 1D
- -0.31%
- 1M
- -1.43%
- 6M
- -1.33%
- YTD
- -1.33%
- 1Y
- 1.14%
- 3Y*
- 2.75%
- 5Y*
- -1.29%
- 10Y*
- —
- ALL TIME*
- -0.88%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
SSAFX vs. SSASX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
SSAFX State Street Aggregate Bond Index Portfolio | -0.61% | 6.81% | 1.34% | 5.61% | -13.30% | 1.03% |
SSASX State Street Income Fund | -1.33% | 7.49% | -0.95% | 4.83% | -13.74% | 0.59% |
Correlation
The correlation between SSAFX and SSASX is 0.92, meaning they have usually moved in the same direction, including during past declines.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.92 |
Correlation (3Y) Balances recent behavior with more history. | 0.96 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.97 |
Correlation (All Time) Calculated using the full available price history since May 24, 2021 | 0.97 |
The correlation between SSAFX and SSASX has been stable across timeframes, ranging from 0.92 to 0.97 - a consistent structural relationship.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
SSAFX vs. SSASX — Risk / Return Rank
SSAFX
SSASX
SSAFX vs. SSASX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for State Street Aggregate Bond Index Portfolio (SSAFX) and State Street Income Fund (SSASX). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| SSAFX | SSASX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.22 | ||
| Sortino ratioReturn per unit of downside risk | +0.30 | ||
| Omega ratioGain probability vs. loss probability | 1.13 | 1.09 | +0.03 |
| Calmar ratioReturn relative to maximum drawdown | 0.98 | 0.61 | +0.38 |
| Martin ratioReturn relative to average drawdown | 2.46 | 1.44 | +1.01 |
Loading charts...
Drawdowns
SSAFX vs. SSASX - Drawdown Comparison
The maximum SSAFX drawdown since its inception was -18.74%, roughly equal to the maximum SSASX drawdown of -19.65%. Use the drawdown chart below to compare losses from any high point for SSAFX and SSASX.
Loading charts...
Drawdown Indicators
| SSAFX | SSASX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -18.74% | -19.65% | +0.91% |
Max Drawdown (1Y)Largest decline over 1 year | -2.74% | -3.42% | +0.68% |
Max Drawdown (3Y)Largest decline over 3 years | -4.97% | -6.86% | +1.89% |
Max Drawdown (5Y)Largest decline over 5 years | -17.99% | -19.54% | +1.55% |
Max Drawdown (10Y)Largest decline over 10 years | -18.74% | — | — |
Current DrawdownCurrent decline from peak | -3.62% | -6.51% | +2.89% |
Average DrawdownAverage peak-to-trough decline | -4.39% | -9.54% | +5.15% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.10% | 1.44% | -0.34% |
Volatility
SSAFX vs. SSASX - Volatility Comparison
State Street Aggregate Bond Index Portfolio (SSAFX) and State Street Income Fund (SSASX) have volatilities of 0.98% and 0.95%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| SSAFX | SSASX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.98% | 0.95% | +0.03% |
Volatility (6M)Calculated over the trailing 6-month period | 2.88% | 3.09% | -0.21% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.67% | 4.03% | -0.36% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.95% | 6.50% | -0.55% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 277.46% | 6.42% | +271.04% |
SSAFX vs. SSASX - Expense Ratio Comparison
SSAFX has a 0.02% expense ratio, which is lower than SSASX'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%.
Dividends
SSAFX vs. SSASX - Dividend Comparison
SSAFX's dividend yield for the trailing twelve months is around 3.88%, more than SSASX's 3.69% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SSAFX State Street Aggregate Bond Index Portfolio | 3.88% | 3.70% | 3.76% | 3.16% | 2.49% | 1.90% | 2.41% | 2.88% | 2.82% | 2.42% | 2.21% | 3.21% |
SSASX State Street Income Fund | 3.69% | 4.01% | 2.76% | 2.86% | 2.48% | 3.77% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
With a correlation of 0.92, SSAFX and SSASX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
SSAFX has higher volatility (0.98%) compared to SSASX (0.95%). In terms of maximum drawdown, SSAFX dropped -18.74% vs SSASX's -19.65%.
SSAFX currently has the higher Sharpe Ratio (0.73 vs 0.52), 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.
Find the right allocation for SSAFX and SSASX
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer