SSASX vs. SSAFX
SSASX (State Street Income Fund) and SSAFX (State Street Aggregate Bond Index Portfolio) are both mutual funds - SSASX is a Intermediate Core-Plus Bond fund managed by State Street, while SSAFX is a Intermediate Core Bond fund managed by State Street. Over the past 5 years, SSASX returned -1.23%/yr vs -0.47%/yr for SSAFX. Their 0.97 correlation means they have historically moved very closely together. SSASX charges 0.20%/yr vs 0.02%/yr for SSAFX.
Performance
SSASX vs. SSAFX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, SSASX achieves a -1.02% return, which is significantly lower than SSAFX's -0.34% return.
SSASX
- 1D
- 0.00%
- 1M
- -1.12%
- 6M
- -1.22%
- YTD
- -1.02%
- 1Y
- 1.46%
- 3Y*
- 2.65%
- 5Y*
- -1.23%
- 10Y*
- —
- ALL TIME*
- -0.82%
SSAFX
- 1D
- 0.06%
- 1M
- -0.87%
- 6M
- -0.53%
- YTD
- -0.34%
- 1Y
- 2.14%
- 3Y*
- 3.68%
- 5Y*
- -0.47%
- 10Y*
- 27.54%
- ALL TIME*
- 23.57%
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 |
SSASX vs. SSAFX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
SSASX State Street Income Fund | -1.02% | 7.49% | -0.95% | 4.83% | -13.74% | 0.59% |
SSAFX State Street Aggregate Bond Index Portfolio | -0.34% | 6.81% | 1.34% | 5.61% | -13.30% | 1.03% |
Correlation
The correlation between SSASX and SSAFX 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 SSASX and SSAFX 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
SSASX vs. SSAFX — Risk / Return Rank
SSASX
SSAFX
SSASX vs. SSAFX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for State Street Income Fund (SSASX) and State Street Aggregate Bond Index Portfolio (SSAFX). 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.
| SSASX | SSAFX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.14 | ||
| Sortino ratioReturn per unit of downside risk | -0.19 | ||
| Omega ratioGain probability vs. loss probability | 1.12 | 1.14 | -0.02 |
| Calmar ratioReturn relative to maximum drawdown | 0.80 | 1.10 | -0.29 |
| Martin ratioReturn relative to average drawdown | 1.93 | 2.77 | -0.84 |
Loading charts...
Drawdowns
SSASX vs. SSAFX - Drawdown Comparison
The maximum SSASX drawdown since its inception was -19.65%, roughly equal to the maximum SSAFX drawdown of -18.74%. Use the drawdown chart below to compare losses from any high point for SSASX and SSAFX.
Loading charts...
Drawdown Indicators
| SSASX | SSAFX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.65% | -18.74% | -0.91% |
Max Drawdown (1Y)Largest decline over 1 year | -3.42% | -2.74% | -0.68% |
Max Drawdown (3Y)Largest decline over 3 years | -6.86% | -4.97% | -1.89% |
Max Drawdown (5Y)Largest decline over 5 years | -19.65% | -18.09% | -1.56% |
Max Drawdown (10Y)Largest decline over 10 years | — | -18.74% | — |
Current DrawdownCurrent decline from peak | -6.22% | -3.36% | -2.86% |
Average DrawdownAverage peak-to-trough decline | -9.54% | -4.39% | -5.15% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.42% | 1.09% | +0.33% |
Volatility
SSASX vs. SSAFX - Volatility Comparison
The current volatility for State Street Income Fund (SSASX) is 0.92%, while State Street Aggregate Bond Index Portfolio (SSAFX) has a volatility of 0.97%. This indicates that SSASX experiences smaller price fluctuations and is considered to be less risky than SSAFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| SSASX | SSAFX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.92% | 0.97% | -0.05% |
Volatility (6M)Calculated over the trailing 6-month period | 3.08% | 2.87% | +0.21% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.03% | 3.67% | +0.36% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.50% | 5.95% | +0.55% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 6.42% | 277.46% | -271.04% |
SSASX vs. SSAFX - Expense Ratio Comparison
SSASX has a 0.20% expense ratio, which is higher than SSAFX's 0.02% 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
SSASX vs. SSAFX - Dividend Comparison
SSASX's dividend yield for the trailing twelve months is around 3.68%, less than SSAFX's 4.21% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SSAFX State Street Aggregate Bond Index Portfolio | 3.87% | 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 | 3.68% | 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, SSASX and SSAFX 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 (0.97%) compared to SSASX (0.92%). In terms of maximum drawdown, SSASX dropped -19.65% vs SSAFX's -18.74%.
SSAFX currently has the higher Sharpe Ratio (0.82 vs 0.69), 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 SSASX and SSAFX
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