MIGFX vs. ^GSPC
MIGFX (MFS Massachusetts Investors Growth Stock Fund) is Large Cap Growth Equities fund managed by MFS, while ^GSPC (S&P 500 Index) is an index. Over the past 10 years, MIGFX returned 14.08%/yr vs 13.26%/yr for ^GSPC. Their correlation of 0.92 means they have usually moved in the same direction.
Performance
MIGFX vs. ^GSPC - Performance Comparison
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Returns By Period
In the year-to-date period, MIGFX achieves a -1.78% return, which is significantly lower than ^GSPC's 9.41% return. Over the past 10 years, MIGFX has outperformed ^GSPC with an annualized return of 14.08%, while ^GSPC has yielded a comparatively lower 13.26% annualized return.
MIGFX
- 1D
- 1.34%
- 1M
- 0.92%
- 6M
- -1.02%
- YTD
- -1.78%
- 1Y
- 3.68%
- 3Y*
- 12.93%
- 5Y*
- 8.13%
- 10Y*
- 14.08%
- ALL TIME*
- 7.42%
^GSPC
- 1D
- 0.70%
- 1M
- 0.09%
- 6M
- 7.94%
- YTD
- 9.41%
- 1Y
- 20.07%
- 3Y*
- 17.84%
- 5Y*
- 11.25%
- 10Y*
- 13.26%
- ALL TIME*
- 8.09%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
^GSPC S&P 500 Index | $37.98T | $37.61T | $41.48T |
| $0.00 | $0.00 | $0.00 |
MIGFX vs. ^GSPC - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MIGFX MFS Massachusetts Investors Growth Stock Fund | -1.78% | 9.97% | 27.25% | 24.13% | -19.20% | 26.06% | 22.55% | 39.89% | 0.81% | 28.68% |
^GSPC S&P 500 Index | 9.41% | 16.39% | 23.31% | 24.23% | -19.44% | 26.89% | 16.26% | 28.88% | -6.24% | 19.42% |
Correlation
The correlation between MIGFX and ^GSPC is 0.88, meaning they have usually moved in the same direction, including during past declines.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.88 |
Correlation (3Y) Balances recent behavior with more history. | 0.92 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.94 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.94 |
Correlation (All Time) Calculated using the full available price history since May 3, 1973 | 0.92 |
The correlation between MIGFX and ^GSPC has been stable across timeframes, ranging from 0.88 to 0.94 - a consistent structural relationship.
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Return for Risk
MIGFX vs. ^GSPC — Risk / Return Rank
MIGFX
^GSPC
MIGFX vs. ^GSPC - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS Massachusetts Investors Growth Stock Fund (MIGFX) and S&P 500 Index (^GSPC). 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.
| MIGFX | ^GSPC | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.29 | ||
| Sortino ratioReturn per unit of downside risk | -1.72 | ||
| Omega ratioGain probability vs. loss probability | 1.03 | 1.25 | -0.22 |
| Calmar ratioReturn relative to maximum drawdown | 0.12 | 2.00 | -1.88 |
| Martin ratioReturn relative to average drawdown | 0.36 | 8.49 | -8.13 |
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Drawdowns
MIGFX vs. ^GSPC - Drawdown Comparison
The maximum MIGFX drawdown since its inception was -61.83%, which is greater than ^GSPC's maximum drawdown of -56.78%. Use the drawdown chart below to compare losses from any high point for MIGFX and ^GSPC.
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Drawdown Indicators
| MIGFX | ^GSPC | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -61.83% | -56.78% | -5.05% |
Max Drawdown (1Y)Largest decline over 1 year | -13.77% | -9.10% | -4.67% |
Max Drawdown (3Y)Largest decline over 3 years | -18.68% | -18.90% | +0.22% |
Max Drawdown (5Y)Largest decline over 5 years | -26.67% | -25.43% | -1.24% |
Max Drawdown (10Y)Largest decline over 10 years | -32.42% | -33.92% | +1.50% |
Current DrawdownCurrent decline from peak | -3.82% | -1.58% | -2.24% |
Average DrawdownAverage peak-to-trough decline | -18.91% | -10.70% | -8.21% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.57% | 2.14% | +2.43% |
Volatility
MIGFX vs. ^GSPC - Volatility Comparison
The current volatility for MFS Massachusetts Investors Growth Stock Fund (MIGFX) is 3.24%, while S&P 500 Index (^GSPC) has a volatility of 3.51%. This indicates that MIGFX experiences smaller price fluctuations and is considered to be less risky than ^GSPC based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MIGFX | ^GSPC | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 3.24% | 3.51% | -0.27% |
Volatility (6M)Calculated over the trailing 6-month period | 10.75% | 10.11% | +0.64% |
Volatility (1Y)Calculated over the trailing 1-year period | 13.39% | 12.87% | +0.52% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.63% | 17.01% | +0.62% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.20% | 18.07% | +0.13% |
Frequently Asked Questions
MIGFX and ^GSPC have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
^GSPC has higher volatility (3.51%) compared to MIGFX (3.24%). In terms of maximum drawdown, MIGFX dropped -61.83% vs ^GSPC's -56.78%.
^GSPC currently has the higher Sharpe Ratio (1.42 vs 0.12), 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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