MMUFX vs. FSTEX
MMUFX (MFS Utilities Fund) and FSTEX (Invesco Energy Fund) are both mutual funds - MMUFX is a Utilities Equities fund managed by MFS, while FSTEX is a Energy Equities fund managed by Invesco. Over the past 10 years, MMUFX returned 8.95%/yr vs 6.15%/yr for FSTEX. A 0.53 correlation means they provide meaningful diversification when combined. MMUFX charges 0.99%/yr vs 1.36%/yr for FSTEX.
Performance
MMUFX vs. FSTEX - Performance Comparison
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Returns By Period
In the year-to-date period, MMUFX achieves a 7.13% return, which is significantly lower than FSTEX's 21.46% return. Over the past 10 years, MMUFX has outperformed FSTEX with an annualized return of 8.95%, while FSTEX has yielded a comparatively lower 6.15% annualized return.
MMUFX
- 1D
- 0.68%
- 1M
- -1.01%
- YTD
- 7.13%
- 6M
- 7.39%
- 1Y
- 15.62%
- 3Y*
- 10.83%
- 5Y*
- 8.19%
- 10Y*
- 8.95%
FSTEX
- 1D
- 1.26%
- 1M
- -9.43%
- YTD
- 21.46%
- 6M
- 22.13%
- 1Y
- 28.84%
- 3Y*
- 16.93%
- 5Y*
- 19.43%
- 10Y*
- 6.15%
MMUFX vs. FSTEX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MMUFX MFS Utilities Fund | 7.13% | 14.32% | 11.38% | -2.28% | 0.35% | 13.86% | 6.04% | 24.91% | 0.85% | 14.69% |
FSTEX Invesco Energy Fund | 21.46% | 12.31% | 6.00% | 0.28% | 52.85% | 55.99% | -32.13% | 4.78% | -26.82% | -8.26% |
Correlation
The correlation between MMUFX and FSTEX is 0.06, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.06 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.21 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.25 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.32 |
Correlation (All Time) Calculated using the full available price history since Feb 14, 1992 | 0.53 |
Over the past year, the correlation between MMUFX and FSTEX has dropped to 0.06 - well below their long-term average of 0.53, suggesting their price drivers have been diverging.
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Return for Risk
MMUFX vs. FSTEX — Risk / Return Rank
MMUFX
FSTEX
MMUFX vs. FSTEX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS Utilities Fund (MMUFX) and Invesco Energy Fund (FSTEX). 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.
| MMUFX | FSTEX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.14 | ||
| Sortino ratioReturn per unit of downside risk | -0.13 | ||
| Omega ratioGain probability vs. loss probability | 1.21 | 1.23 | -0.01 |
| Calmar ratioReturn relative to maximum drawdown | 1.96 | 1.85 | +0.11 |
| Martin ratioReturn relative to average drawdown | 4.82 | 6.90 | -2.08 |
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Drawdowns
MMUFX vs. FSTEX - Drawdown Comparison
The maximum MMUFX drawdown since its inception was -56.03%, smaller than the maximum FSTEX drawdown of -83.31%. Use the drawdown chart below to compare losses from any high point for MMUFX and FSTEX.
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Drawdown Indicators
| MMUFX | FSTEX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -56.03% | -83.31% | +27.28% |
Max Drawdown (1Y)Largest decline over 1 year | -8.75% | -14.09% | +5.34% |
Max Drawdown (3Y)Largest decline over 3 years | -17.72% | -18.58% | +0.86% |
Max Drawdown (5Y)Largest decline over 5 years | -21.64% | -26.88% | +5.24% |
Max Drawdown (10Y)Largest decline over 10 years | -35.82% | -73.41% | +37.59% |
Current DrawdownCurrent decline from peak | -5.09% | -13.01% | +7.92% |
Average DrawdownAverage peak-to-trough decline | -8.75% | -25.18% | +16.43% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.56% | 3.81% | -0.25% |
Volatility
MMUFX vs. FSTEX - Volatility Comparison
The current volatility for MFS Utilities Fund (MMUFX) is 5.00%, while Invesco Energy Fund (FSTEX) has a volatility of 7.02%. This indicates that MMUFX experiences smaller price fluctuations and is considered to be less risky than FSTEX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MMUFX | FSTEX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.00% | 7.02% | -2.02% |
Volatility (6M)Calculated over the trailing 6-month period | 11.61% | 16.03% | -4.42% |
Volatility (1Y)Calculated over the trailing 1-year period | 14.37% | 19.64% | -5.27% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 15.83% | 25.14% | -9.31% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 16.64% | 29.71% | -13.07% |
MMUFX vs. FSTEX - Expense Ratio Comparison
MMUFX has a 0.99% expense ratio, which is lower than FSTEX's 1.36% expense ratio.
Dividends
MMUFX vs. FSTEX - Dividend Comparison
MMUFX's dividend yield for the trailing twelve months is around 3.57%, more than FSTEX's 1.83% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FSTEX Invesco Energy Fund | 1.83% | 2.22% | 4.03% | 2.11% | 0.89% | 1.80% | 2.21% | 1.53% | 3.05% | 2.22% | 1.10% | 1.58% |
MMUFX MFS Utilities Fund | 3.57% | 3.83% | 3.72% | 5.82% | 8.68% | 5.61% | 5.80% | 6.85% | 4.29% | 2.67% | 3.72% | 9.09% |
Frequently Asked Questions
MMUFX and FSTEX have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
FSTEX has higher volatility (7.02%) compared to MMUFX (5.00%). In terms of maximum drawdown, MMUFX dropped -56.03% vs FSTEX's -83.31%.
FSTEX currently has the higher Sharpe Ratio (1.33 vs 1.20), 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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