SSMKX vs. SSSYX
Compare and contrast key facts about State Street Small/Mid Cap Equity Index Fund (SSMKX) and State Street Equity 500 Index Fund Class K (SSSYX).
SSMKX is managed by State Street. It was launched on Aug 12, 2015. SSSYX is a passively managed fund by State Street that tracks the performance of the S&P 500 Index. It was launched on Sep 17, 2014.
Performance
SSMKX vs. SSSYX - Performance Comparison
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SSMKX vs. SSSYX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SSMKX State Street Small/Mid Cap Equity Index Fund | -1.19% | 12.77% | 17.20% | 25.20% | -25.49% | 12.38% | 32.41% | 27.82% | -9.02% | 18.16% |
SSSYX State Street Equity 500 Index Fund Class K | -4.34% | 17.81% | 24.99% | 26.27% | -18.16% | 28.51% | 18.31% | 31.38% | -4.38% | 21.61% |
Returns By Period
In the year-to-date period, SSMKX achieves a -1.19% return, which is significantly higher than SSSYX's -4.34% return. Over the past 10 years, SSMKX has underperformed SSSYX with an annualized return of 11.29%, while SSSYX has yielded a comparatively higher 14.02% annualized return.
SSMKX
- 1D
- 3.42%
- 1M
- -5.59%
- YTD
- -1.19%
- 6M
- -0.97%
- 1Y
- 20.97%
- 3Y*
- 15.57%
- 5Y*
- 4.63%
- 10Y*
- 11.29%
SSSYX
- 1D
- 2.92%
- 1M
- -5.02%
- YTD
- -4.34%
- 6M
- -2.15%
- 1Y
- 17.29%
- 3Y*
- 18.28%
- 5Y*
- 11.75%
- 10Y*
- 14.02%
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SSMKX vs. SSSYX - Expense Ratio Comparison
SSMKX has a 0.05% expense ratio, which is higher than SSSYX'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%.
Return for Risk
SSMKX vs. SSSYX — Risk / Return Rank
SSMKX
SSSYX
SSMKX vs. SSSYX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for State Street Small/Mid Cap Equity Index Fund (SSMKX) and State Street Equity 500 Index Fund Class K (SSSYX). 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.
| SSMKX | SSSYX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.96 | 0.97 | -0.01 |
Sortino ratioReturn per unit of downside risk | 1.47 | 1.49 | -0.02 |
Omega ratioGain probability vs. loss probability | 1.20 | 1.23 | -0.02 |
Calmar ratioReturn relative to maximum drawdown | 1.46 | 1.52 | -0.06 |
Martin ratioReturn relative to average drawdown | 6.15 | 7.30 | -1.15 |
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
| SSMKX | SSSYX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.96 | 0.97 | -0.01 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.21 | 0.70 | -0.49 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.51 | 0.11 | +0.40 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.50 | 0.11 | +0.40 |
Correlation
The correlation between SSMKX and SSSYX is 0.86, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
SSMKX vs. SSSYX - Dividend Comparison
SSMKX's dividend yield for the trailing twelve months is around 5.16%, more than SSSYX's 1.51% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SSMKX State Street Small/Mid Cap Equity Index Fund | 5.16% | 5.10% | 2.12% | 2.56% | 17.09% | 9.69% | 1.47% | 5.75% | 3.68% | 5.52% | 1.30% | 0.00% |
SSSYX State Street Equity 500 Index Fund Class K | 1.51% | 1.44% | 1.63% | 1.78% | 2.16% | 2.76% | 1.86% | 4.44% | 5.18% | 5.94% | 2.07% | 1.84% |
Drawdowns
SSMKX vs. SSSYX - Drawdown Comparison
The maximum SSMKX drawdown since its inception was -41.65%, smaller than the maximum SSSYX drawdown of -91.48%. Use the drawdown chart below to compare losses from any high point for SSMKX and SSSYX.
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Drawdown Indicators
| SSMKX | SSSYX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -41.65% | -91.48% | +49.83% |
Max Drawdown (1Y)Largest decline over 1 year | -14.48% | -12.10% | -2.38% |
Max Drawdown (5Y)Largest decline over 5 years | -35.19% | -24.49% | -10.70% |
Max Drawdown (10Y)Largest decline over 10 years | -41.65% | -91.48% | +49.83% |
Current DrawdownCurrent decline from peak | -6.96% | -6.22% | -0.74% |
Average DrawdownAverage peak-to-trough decline | -8.81% | -4.20% | -4.61% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.44% | 2.52% | +0.92% |
Volatility
SSMKX vs. SSSYX - Volatility Comparison
State Street Small/Mid Cap Equity Index Fund (SSMKX) has a higher volatility of 6.97% compared to State Street Equity 500 Index Fund Class K (SSSYX) at 5.34%. This indicates that SSMKX's price experiences larger fluctuations and is considered to be riskier than SSSYX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SSMKX | SSSYX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.97% | 5.34% | +1.63% |
Volatility (6M)Calculated over the trailing 6-month period | 13.21% | 9.53% | +3.68% |
Volatility (1Y)Calculated over the trailing 1-year period | 22.65% | 18.29% | +4.36% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.27% | 16.89% | +5.38% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.23% | 124.43% | -102.20% |