SSFDX vs. SSMKX
Compare and contrast key facts about State Street Aggregate Bond Index Fund (SSFDX) and State Street Small/Mid Cap Equity Index Fund (SSMKX).
SSFDX is managed by State Street. It was launched on Sep 19, 2014. SSMKX is managed by State Street. It was launched on Aug 12, 2015.
Performance
SSFDX vs. SSMKX - Performance Comparison
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SSFDX vs. SSMKX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SSFDX State Street Aggregate Bond Index Fund | -0.18% | 6.80% | 1.36% | 5.39% | -13.36% | -1.98% | -89.24% | 8.98% | -0.20% | 3.29% |
SSMKX State Street Small/Mid Cap Equity Index Fund | -4.46% | 12.77% | 17.20% | 25.20% | -25.49% | 12.38% | 32.41% | 27.82% | -9.02% | 18.16% |
Returns By Period
In the year-to-date period, SSFDX achieves a -0.18% return, which is significantly higher than SSMKX's -4.46% return. Over the past 10 years, SSFDX has underperformed SSMKX with an annualized return of -19.37%, while SSMKX has yielded a comparatively higher 10.91% annualized return.
SSFDX
- 1D
- 0.52%
- 1M
- -1.98%
- YTD
- -0.18%
- 6M
- 0.81%
- 1Y
- 4.11%
- 3Y*
- 3.37%
- 5Y*
- 0.06%
- 10Y*
- -19.37%
SSMKX
- 1D
- -0.92%
- 1M
- -8.01%
- YTD
- -4.46%
- 6M
- -4.04%
- 1Y
- 17.62%
- 3Y*
- 14.28%
- 5Y*
- 4.29%
- 10Y*
- 10.91%
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SSFDX vs. SSMKX - Expense Ratio Comparison
SSFDX has a 0.23% expense ratio, which is higher than SSMKX's 0.05% 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%.
Return for Risk
SSFDX vs. SSMKX — Risk / Return Rank
SSFDX
SSMKX
SSFDX vs. SSMKX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for State Street Aggregate Bond Index Fund (SSFDX) and State Street Small/Mid Cap Equity Index Fund (SSMKX). 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.
| SSFDX | SSMKX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.04 | 0.77 | +0.27 |
Sortino ratioReturn per unit of downside risk | 1.48 | 1.22 | +0.26 |
Omega ratioGain probability vs. loss probability | 1.18 | 1.17 | +0.02 |
Calmar ratioReturn relative to maximum drawdown | 1.95 | 1.01 | +0.94 |
Martin ratioReturn relative to average drawdown | 5.41 | 4.29 | +1.12 |
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
| SSFDX | SSMKX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.04 | 0.77 | +0.27 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.01 | 0.19 | -0.18 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | -0.61 | 0.49 | -1.10 |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.56 | 0.49 | -1.05 |
Correlation
The correlation between SSFDX and SSMKX is -0.01. 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
SSFDX vs. SSMKX - Dividend Comparison
SSFDX's dividend yield for the trailing twelve months is around 4.03%, less than SSMKX's 5.34% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SSFDX State Street Aggregate Bond Index Fund | 4.03% | 3.64% | 3.59% | 2.95% | 2.27% | 3.12% | 8.84% | 3.15% | 2.79% | 2.43% | 2.19% | 4.63% |
SSMKX State Street Small/Mid Cap Equity Index Fund | 5.34% | 5.10% | 2.12% | 2.56% | 17.09% | 9.69% | 1.47% | 5.75% | 3.68% | 5.52% | 1.30% | 0.00% |
Drawdowns
SSFDX vs. SSMKX - Drawdown Comparison
The maximum SSFDX drawdown since its inception was -92.69%, which is greater than SSMKX's maximum drawdown of -41.65%. Use the drawdown chart below to compare losses from any high point for SSFDX and SSMKX.
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Drawdown Indicators
| SSFDX | SSMKX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -92.69% | -41.65% | -51.04% |
Max Drawdown (1Y)Largest decline over 1 year | -2.53% | -14.48% | +11.95% |
Max Drawdown (5Y)Largest decline over 5 years | -18.19% | -35.19% | +17.00% |
Max Drawdown (10Y)Largest decline over 10 years | -92.69% | -41.65% | -51.04% |
Current DrawdownCurrent decline from peak | -90.19% | -10.03% | -80.16% |
Average DrawdownAverage peak-to-trough decline | -47.39% | -8.81% | -38.58% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.91% | 3.42% | -2.51% |
Volatility
SSFDX vs. SSMKX - Volatility Comparison
The current volatility for State Street Aggregate Bond Index Fund (SSFDX) is 1.60%, while State Street Small/Mid Cap Equity Index Fund (SSMKX) has a volatility of 5.96%. This indicates that SSFDX experiences smaller price fluctuations and is considered to be less risky than SSMKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SSFDX | SSMKX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.60% | 5.96% | -4.36% |
Volatility (6M)Calculated over the trailing 6-month period | 2.50% | 12.77% | -10.27% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.20% | 22.44% | -18.24% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.91% | 22.22% | -16.31% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 31.81% | 22.20% | +9.61% |