SSAFX vs. ABNFX
SSAFX (State Street Aggregate Bond Index Portfolio) and ABNFX (American Funds The Bond Fund of America® Class F-2) are both Intermediate Core Bond funds. Over the past 10 years, SSAFX returned 27.53%/yr vs 1.66%/yr for ABNFX. Their correlation of 0.93 means they have usually moved in the same direction. SSAFX charges 0.02%/yr vs 0.34%/yr for ABNFX.
Performance
SSAFX vs. ABNFX - Performance Comparison
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Returns By Period
In the year-to-date period, SSAFX achieves a -0.61% return, which is significantly higher than ABNFX's -1.23% return. Over the past 10 years, SSAFX has outperformed ABNFX with an annualized return of 27.53%, while ABNFX has yielded a comparatively lower 1.66% annualized 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%
ABNFX
- 1D
- -0.27%
- 1M
- -1.51%
- 6M
- -1.31%
- YTD
- -1.23%
- 1Y
- 1.29%
- 3Y*
- 3.71%
- 5Y*
- -0.61%
- 10Y*
- 1.66%
- ALL TIME*
- 2.75%
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. ABNFX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SSAFX State Street Aggregate Bond Index Portfolio | -0.61% | 6.81% | 1.34% | 5.61% | -13.30% | -1.72% | 978.57% | 8.69% | -0.12% | 3.38% |
ABNFX American Funds The Bond Fund of America® Class F-2 | -1.23% | 7.42% | 1.42% | 4.29% | -13.08% | -0.88% | 10.86% | 8.08% | 0.15% | 3.48% |
Correlation
The correlation between SSAFX and ABNFX is 0.91, 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. | 0.91 |
Correlation (3Y) Balances recent behavior with more history. | 0.94 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.96 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.93 |
Correlation (All Time) Calculated using the full available price history since Sep 22, 2014 | 0.93 |
The correlation between SSAFX and ABNFX has been stable across timeframes, ranging from 0.91 to 0.96 - a consistent structural relationship.
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Return for Risk
SSAFX vs. ABNFX — Risk / Return Rank
SSAFX
ABNFX
SSAFX vs. ABNFX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for State Street Aggregate Bond Index Portfolio (SSAFX) and American Funds The Bond Fund of America® Class F-2 (ABNFX). 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 | ABNFX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.18 | ||
| Sortino ratioReturn per unit of downside risk | +0.25 | ||
| Omega ratioGain probability vs. loss probability | 1.13 | 1.10 | +0.03 |
| Calmar ratioReturn relative to maximum drawdown | 0.98 | 0.68 | +0.30 |
| Martin ratioReturn relative to average drawdown | 2.46 | 1.65 | +0.81 |
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Drawdowns
SSAFX vs. ABNFX - Drawdown Comparison
The maximum SSAFX drawdown since its inception was -18.74%, which is greater than ABNFX's maximum drawdown of -17.69%. Use the drawdown chart below to compare losses from any high point for SSAFX and ABNFX.
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Drawdown Indicators
| SSAFX | ABNFX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -18.74% | -17.69% | -1.05% |
Max Drawdown (1Y)Largest decline over 1 year | -2.74% | -3.09% | +0.35% |
Max Drawdown (3Y)Largest decline over 3 years | -4.97% | -5.11% | +0.14% |
Max Drawdown (5Y)Largest decline over 5 years | -17.99% | -17.65% | -0.34% |
Max Drawdown (10Y)Largest decline over 10 years | -18.74% | -17.69% | -1.05% |
Current DrawdownCurrent decline from peak | -3.62% | -3.31% | -0.31% |
Average DrawdownAverage peak-to-trough decline | -4.39% | -3.28% | -1.11% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.10% | 1.28% | -0.18% |
Volatility
SSAFX vs. ABNFX - Volatility Comparison
State Street Aggregate Bond Index Portfolio (SSAFX) and American Funds The Bond Fund of America® Class F-2 (ABNFX) have volatilities of 0.98% and 0.97%, 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.
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Volatility by Period
| SSAFX | ABNFX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.98% | 0.97% | +0.01% |
Volatility (6M)Calculated over the trailing 6-month period | 2.88% | 3.03% | -0.15% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.67% | 3.81% | -0.14% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.95% | 5.97% | -0.02% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 277.46% | 4.90% | +272.56% |
SSAFX vs. ABNFX - Expense Ratio Comparison
SSAFX has a 0.02% expense ratio, which is lower than ABNFX's 0.34% expense ratio.
Dividends
SSAFX vs. ABNFX - Dividend Comparison
SSAFX's dividend yield for the trailing twelve months is around 3.88%, less than ABNFX's 4.07% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ABNFX American Funds The Bond Fund of America® Class F-2 | 4.07% | 4.37% | 4.55% | 3.19% | 2.37% | 2.07% | 5.15% | 3.72% | 2.65% | 2.10% | 2.31% | 2.24% |
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% |
Frequently Asked Questions
With a correlation of 0.91, SSAFX and ABNFX 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 ABNFX (0.97%). In terms of maximum drawdown, SSAFX dropped -18.74% vs ABNFX's -17.69%.
SSAFX currently has the higher Sharpe Ratio (0.73 vs 0.56), 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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