SSMKX vs. VO
Compare and contrast key facts about State Street Small/Mid Cap Equity Index Fund (SSMKX) and Vanguard Mid-Cap ETF (VO).
SSMKX is managed by State Street. It was launched on Aug 12, 2015. VO is a passively managed fund by Vanguard that tracks the performance of the CRSP US Mid Cap Index. It was launched on Jan 26, 2004.
Performance
SSMKX vs. VO - Performance Comparison
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SSMKX vs. VO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
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% |
VO Vanguard Mid-Cap ETF | -0.05% | 11.62% | 15.31% | 16.03% | -18.73% | 24.70% | 18.10% | 30.98% | -9.24% | 19.28% |
Returns By Period
In the year-to-date period, SSMKX achieves a -4.46% return, which is significantly lower than VO's -0.05% return. Both investments have delivered pretty close results over the past 10 years, with SSMKX having a 10.91% annualized return and VO not far behind at 10.74%.
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%
VO
- 1D
- 0.63%
- 1M
- -5.18%
- YTD
- -0.05%
- 6M
- -0.76%
- 1Y
- 13.07%
- 3Y*
- 12.85%
- 5Y*
- 6.79%
- 10Y*
- 10.74%
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SSMKX vs. VO - Expense Ratio Comparison
SSMKX has a 0.05% expense ratio, which is higher than VO's 0.04% 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. VO — Risk / Return Rank
SSMKX
VO
SSMKX vs. VO - 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 Vanguard Mid-Cap ETF (VO). 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 | VO | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.77 | 0.75 | +0.02 |
Sortino ratioReturn per unit of downside risk | 1.22 | 1.15 | +0.07 |
Omega ratioGain probability vs. loss probability | 1.17 | 1.16 | 0.00 |
Calmar ratioReturn relative to maximum drawdown | 1.01 | 1.06 | -0.04 |
Martin ratioReturn relative to average drawdown | 4.29 | 4.83 | -0.54 |
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 | VO | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.77 | 0.75 | +0.02 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.19 | 0.39 | -0.19 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.49 | 0.57 | -0.08 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.49 | 0.48 | 0.00 |
Correlation
The correlation between SSMKX and VO is 0.95, 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. VO - Dividend Comparison
SSMKX's dividend yield for the trailing twelve months is around 5.34%, more than VO's 1.50% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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% |
VO Vanguard Mid-Cap ETF | 1.50% | 1.52% | 1.49% | 1.52% | 1.60% | 1.12% | 1.45% | 1.48% | 1.82% | 1.35% | 1.45% | 1.47% |
Drawdowns
SSMKX vs. VO - Drawdown Comparison
The maximum SSMKX drawdown since its inception was -41.65%, smaller than the maximum VO drawdown of -58.87%. Use the drawdown chart below to compare losses from any high point for SSMKX and VO.
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Drawdown Indicators
| SSMKX | VO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -41.65% | -58.87% | +17.22% |
Max Drawdown (1Y)Largest decline over 1 year | -14.48% | -12.74% | -1.74% |
Max Drawdown (5Y)Largest decline over 5 years | -35.19% | -27.57% | -7.62% |
Max Drawdown (10Y)Largest decline over 10 years | -41.65% | -39.37% | -2.28% |
Current DrawdownCurrent decline from peak | -10.03% | -5.53% | -4.50% |
Average DrawdownAverage peak-to-trough decline | -8.81% | -7.91% | -0.90% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.42% | 2.79% | +0.63% |
Volatility
SSMKX vs. VO - Volatility Comparison
State Street Small/Mid Cap Equity Index Fund (SSMKX) has a higher volatility of 5.96% compared to Vanguard Mid-Cap ETF (VO) at 4.83%. This indicates that SSMKX's price experiences larger fluctuations and is considered to be riskier than VO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SSMKX | VO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.96% | 4.83% | +1.13% |
Volatility (6M)Calculated over the trailing 6-month period | 12.77% | 9.73% | +3.04% |
Volatility (1Y)Calculated over the trailing 1-year period | 22.44% | 17.57% | +4.87% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.22% | 17.61% | +4.61% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.20% | 18.94% | +3.26% |