FMDGX vs. SSFDX
Compare and contrast key facts about Fidelity Mid Cap Growth Index Fund (FMDGX) and State Street Aggregate Bond Index Fund (SSFDX).
FMDGX is managed by Fidelity. It was launched on Jul 11, 2019. SSFDX is managed by State Street. It was launched on Sep 19, 2014.
Performance
FMDGX vs. SSFDX - Performance Comparison
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FMDGX vs. SSFDX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
FMDGX Fidelity Mid Cap Growth Index Fund | -9.61% | 8.60% | 22.03% | 25.79% | -26.67% | 12.67% | 34.84% | 4.63% |
SSFDX State Street Aggregate Bond Index Fund | -0.18% | 6.80% | 1.36% | 5.39% | -13.36% | -1.98% | -89.24% | 2.31% |
Returns By Period
In the year-to-date period, FMDGX achieves a -9.61% return, which is significantly lower than SSFDX's -0.18% return.
FMDGX
- 1D
- -1.09%
- 1M
- -9.53%
- YTD
- -9.61%
- 6M
- -12.95%
- 1Y
- 5.72%
- 3Y*
- 11.35%
- 5Y*
- 4.59%
- 10Y*
- —
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%
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FMDGX vs. SSFDX - Expense Ratio Comparison
FMDGX has a 0.05% expense ratio, which is lower than SSFDX's 0.23% expense ratio. Despite the difference, 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
FMDGX vs. SSFDX — Risk / Return Rank
FMDGX
SSFDX
FMDGX vs. SSFDX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity Mid Cap Growth Index Fund (FMDGX) and State Street Aggregate Bond Index Fund (SSFDX). 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.
| FMDGX | SSFDX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.24 | 1.04 | -0.80 |
Sortino ratioReturn per unit of downside risk | 0.51 | 1.48 | -0.97 |
Omega ratioGain probability vs. loss probability | 1.07 | 1.18 | -0.12 |
Calmar ratioReturn relative to maximum drawdown | 0.22 | 1.95 | -1.73 |
Martin ratioReturn relative to average drawdown | 0.69 | 5.41 | -4.71 |
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
| FMDGX | SSFDX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.24 | 1.04 | -0.80 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.21 | 0.01 | +0.20 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | -0.61 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.36 | -0.56 | +0.92 |
Correlation
The correlation between FMDGX and SSFDX is 0.10, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
FMDGX vs. SSFDX - Dividend Comparison
FMDGX's dividend yield for the trailing twelve months is around 2.05%, less than SSFDX's 4.03% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FMDGX Fidelity Mid Cap Growth Index Fund | 2.05% | 1.85% | 0.47% | 0.63% | 0.81% | 6.43% | 0.36% | 0.29% | 0.00% | 0.00% | 0.00% | 0.00% |
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% |
Drawdowns
FMDGX vs. SSFDX - Drawdown Comparison
The maximum FMDGX drawdown since its inception was -38.59%, smaller than the maximum SSFDX drawdown of -92.69%. Use the drawdown chart below to compare losses from any high point for FMDGX and SSFDX.
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Drawdown Indicators
| FMDGX | SSFDX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -38.59% | -92.69% | +54.10% |
Max Drawdown (1Y)Largest decline over 1 year | -14.75% | -2.53% | -12.22% |
Max Drawdown (5Y)Largest decline over 5 years | -38.59% | -18.19% | -20.40% |
Max Drawdown (10Y)Largest decline over 10 years | — | -92.69% | — |
Current DrawdownCurrent decline from peak | -14.75% | -90.19% | +75.44% |
Average DrawdownAverage peak-to-trough decline | -11.34% | -47.39% | +36.05% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.65% | 0.91% | +3.74% |
Volatility
FMDGX vs. SSFDX - Volatility Comparison
Fidelity Mid Cap Growth Index Fund (FMDGX) has a higher volatility of 5.67% compared to State Street Aggregate Bond Index Fund (SSFDX) at 1.60%. This indicates that FMDGX's price experiences larger fluctuations and is considered to be riskier than SSFDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FMDGX | SSFDX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.67% | 1.60% | +4.07% |
Volatility (6M)Calculated over the trailing 6-month period | 12.66% | 2.50% | +10.16% |
Volatility (1Y)Calculated over the trailing 1-year period | 22.94% | 4.20% | +18.74% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.37% | 5.91% | +16.46% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 24.47% | 31.81% | -7.34% |