MITTX vs. ^GSPC
MITTX (MFS Massachusetts Investors Trust) is Large Cap Blend Equities fund managed by MFS, while ^GSPC (S&P 500 Index) is an index. Over the past 10 years, MITTX returned 13.25%/yr vs 13.29%/yr for ^GSPC. Their 0.96 correlation means they have historically moved very closely together.
Performance
MITTX vs. ^GSPC - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, MITTX achieves a 8.24% return, which is significantly lower than ^GSPC's 11.03% return. Both investments have delivered pretty close results over the past 10 years, with MITTX having a 13.25% annualized return and ^GSPC not far ahead at 13.29%.
MITTX
- 1D
- 1.66%
- 1M
- 1.10%
- 6M
- 5.46%
- YTD
- 8.24%
- 1Y
- 15.92%
- 3Y*
- 15.27%
- 5Y*
- 9.15%
- 10Y*
- 13.25%
- ALL TIME*
- 7.50%
^GSPC
- 1D
- 1.48%
- 1M
- 1.57%
- 6M
- 8.95%
- YTD
- 11.03%
- 1Y
- 21.84%
- 3Y*
- 19.28%
- 5Y*
- 11.54%
- 10Y*
- 13.29%
- ALL TIME*
- 8.11%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
^GSPC S&P 500 Index | $38.00T | $37.50T | $41.55T |
| $0.00 | $0.00 | $0.00 |
MITTX vs. ^GSPC - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MITTX MFS Massachusetts Investors Trust | 8.24% | 13.67% | 19.69% | 19.26% | -16.27% | 26.73% | 18.72% | 31.92% | -5.56% | 23.55% |
^GSPC S&P 500 Index | 11.03% | 16.39% | 23.31% | 24.23% | -19.44% | 26.89% | 16.26% | 28.88% | -6.24% | 19.42% |
Correlation
The correlation between MITTX and ^GSPC is 0.95, 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. | 0.95 |
Correlation (3Y) Balances recent behavior with more history. | 0.96 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.97 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.97 |
Correlation (All Time) Calculated using the full available price history since May 3, 1973 | 0.96 |
The correlation between MITTX and ^GSPC has been stable across timeframes, ranging from 0.95 to 0.97 - a consistent structural relationship.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
MITTX vs. ^GSPC — Risk / Return Rank
MITTX
^GSPC
MITTX vs. ^GSPC - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS Massachusetts Investors Trust (MITTX) 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.
| MITTX | ^GSPC | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.55 | ||
| Sortino ratioReturn per unit of downside risk | -0.71 | ||
| Omega ratioGain probability vs. loss probability | 1.21 | 1.31 | -0.10 |
| Calmar ratioReturn relative to maximum drawdown | 1.44 | 2.41 | -0.97 |
| Martin ratioReturn relative to average drawdown | 6.05 | 10.22 | -4.17 |
Loading charts...
Drawdowns
MITTX vs. ^GSPC - Drawdown Comparison
The maximum MITTX drawdown since its inception was -49.54%, smaller than the maximum ^GSPC drawdown of -56.78%. Use the drawdown chart below to compare losses from any high point for MITTX and ^GSPC.
Loading charts...
Drawdown Indicators
| MITTX | ^GSPC | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -49.54% | -56.78% | +7.24% |
Max Drawdown (1Y)Largest decline over 1 year | -9.76% | -9.10% | -0.66% |
Max Drawdown (3Y)Largest decline over 3 years | -16.10% | -18.90% | +2.80% |
Max Drawdown (5Y)Largest decline over 5 years | -23.27% | -25.43% | +2.16% |
Max Drawdown (10Y)Largest decline over 10 years | -33.45% | -33.92% | +0.47% |
Current DrawdownCurrent decline from peak | -1.11% | -0.12% | -0.99% |
Average DrawdownAverage peak-to-trough decline | -10.51% | -10.70% | +0.19% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.32% | 2.14% | +0.18% |
Volatility
MITTX vs. ^GSPC - Volatility Comparison
The current volatility for MFS Massachusetts Investors Trust (MITTX) is 3.18%, while S&P 500 Index (^GSPC) has a volatility of 3.80%. This indicates that MITTX 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.
Loading charts...
Volatility by Period
| MITTX | ^GSPC | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 3.18% | 3.80% | -0.62% |
Volatility (6M)Calculated over the trailing 6-month period | 9.44% | 10.20% | -0.76% |
Volatility (1Y)Calculated over the trailing 1-year period | 12.09% | 12.86% | -0.77% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 15.79% | 17.02% | -1.23% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.18% | 18.08% | -0.90% |
Frequently Asked Questions
With a correlation of 0.95, MITTX and ^GSPC move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
^GSPC has higher volatility (3.80%) compared to MITTX (3.18%). In terms of maximum drawdown, MITTX dropped -49.54% vs ^GSPC's -56.78%.
^GSPC currently has the higher Sharpe Ratio (1.71 vs 1.16), 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.
Find the right allocation for MITTX and ^GSPC
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer