MNWIX vs. WFSPX
MNWIX (MFS Managed Wealth Fund) and WFSPX (iShares S&P 500 Index Fund Class K) are both mutual funds - MNWIX is a Long-Short fund managed by BlackRock, while WFSPX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, MNWIX returned 3.94%/yr vs 15.46%/yr for WFSPX. A 0.59 correlation means they provide meaningful diversification when combined. MNWIX charges 0.67%/yr vs 0.03%/yr for WFSPX.
Performance
MNWIX vs. WFSPX - Performance Comparison
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Returns By Period
In the year-to-date period, MNWIX achieves a 1.58% return, which is significantly lower than WFSPX's 10.17% return. Over the past 10 years, MNWIX has underperformed WFSPX with an annualized return of 3.94%, while WFSPX has yielded a comparatively higher 15.46% annualized return.
MNWIX
- 1D
- 0.22%
- 1M
- 0.45%
- YTD
- 1.58%
- 6M
- 1.43%
- 1Y
- 4.62%
- 3Y*
- 6.23%
- 5Y*
- 4.03%
- 10Y*
- 3.94%
WFSPX
- 1D
- 1.09%
- 1M
- 0.46%
- YTD
- 10.17%
- 6M
- 9.66%
- 1Y
- 27.12%
- 3Y*
- 20.94%
- 5Y*
- 14.06%
- 10Y*
- 15.46%
MNWIX vs. WFSPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MNWIX MFS Managed Wealth Fund | 1.58% | 7.71% | 6.42% | 5.41% | -2.15% | 1.35% | 3.11% | 8.70% | 2.10% | 6.70% |
WFSPX iShares S&P 500 Index Fund Class K | 10.17% | 17.83% | 24.94% | 26.25% | -18.14% | 28.63% | 18.43% | 31.45% | -4.83% | 21.27% |
Correlation
The correlation between MNWIX and WFSPX is 0.84, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.84 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.70 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.62 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.53 |
Correlation (All Time) Calculated using the full available price history since Jun 30, 2014 | 0.59 |
Over the past year, MNWIX and WFSPX have become more correlated (0.84) than their long-term average of 0.59, meaning their price movements have been converging.
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Return for Risk
MNWIX vs. WFSPX — Risk / Return Rank
MNWIX
WFSPX
MNWIX vs. WFSPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS Managed Wealth Fund (MNWIX) and iShares S&P 500 Index Fund Class K (WFSPX). 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.
| MNWIX | WFSPX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.41 | ||
| Sortino ratioReturn per unit of downside risk | -1.81 | ||
| Omega ratioGain probability vs. loss probability | 1.14 | 1.39 | -0.25 |
| Calmar ratioReturn relative to maximum drawdown | 0.79 | 3.03 | -2.24 |
| Martin ratioReturn relative to average drawdown | 3.15 | 13.70 | -10.55 |
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Drawdowns
MNWIX vs. WFSPX - Drawdown Comparison
The maximum MNWIX drawdown since its inception was -5.57%, smaller than the maximum WFSPX drawdown of -58.21%. Use the drawdown chart below to compare losses from any high point for MNWIX and WFSPX.
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Drawdown Indicators
| MNWIX | WFSPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -5.57% | -58.21% | +52.64% |
Max Drawdown (1Y)Largest decline over 1 year | -5.57% | -8.90% | +3.33% |
Max Drawdown (3Y)Largest decline over 3 years | -5.57% | -18.74% | +13.17% |
Max Drawdown (5Y)Largest decline over 5 years | -5.57% | -24.51% | +18.94% |
Max Drawdown (10Y)Largest decline over 10 years | -5.57% | -33.74% | +28.17% |
Current DrawdownCurrent decline from peak | -0.44% | -1.36% | +0.92% |
Average DrawdownAverage peak-to-trough decline | -1.12% | -12.76% | +11.64% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.39% | 1.96% | -0.57% |
Volatility
MNWIX vs. WFSPX - Volatility Comparison
The current volatility for MFS Managed Wealth Fund (MNWIX) is 2.12%, while iShares S&P 500 Index Fund Class K (WFSPX) has a volatility of 4.77%. This indicates that MNWIX experiences smaller price fluctuations and is considered to be less risky than WFSPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MNWIX | WFSPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.12% | 4.77% | -2.65% |
Volatility (6M)Calculated over the trailing 6-month period | 4.77% | 9.90% | -5.13% |
Volatility (1Y)Calculated over the trailing 1-year period | 5.84% | 12.46% | -6.62% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.07% | 16.97% | -12.90% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 3.89% | 18.07% | -14.18% |
MNWIX vs. WFSPX - Expense Ratio Comparison
MNWIX has a 0.67% expense ratio, which is higher than WFSPX's 0.03% expense ratio.
Dividends
MNWIX vs. WFSPX - Dividend Comparison
MNWIX's dividend yield for the trailing twelve months is around 0.75%, less than WFSPX's 1.59% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MNWIX MFS Managed Wealth Fund | 0.75% | 0.76% | 1.13% | 0.78% | 0.70% | 0.13% | 0.24% | 0.54% | 0.42% | 0.94% | 2.65% | 1.19% |
WFSPX iShares S&P 500 Index Fund Class K | 1.59% | 1.72% | 1.41% | 1.50% | 2.02% | 1.82% | 1.66% | 1.99% | 2.00% | 1.62% | 2.37% | 2.49% |
Frequently Asked Questions
MNWIX and WFSPX have a correlation of 0.84, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
WFSPX has higher volatility (4.77%) compared to MNWIX (2.12%). In terms of maximum drawdown, MNWIX dropped -5.57% vs WFSPX's -58.21%.
WFSPX currently has the higher Sharpe Ratio (2.16 vs 0.75), 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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