MFWIX vs. GWOAX

Last updated Jun 24, 2026

MFWIX (MFS Global Total Return Fund Class I) and GWOAX (GMO Global Developed Equity Allocation Fund) are both Global Equities funds. Over the past 10 years, MFWIX returned 6.69%/yr vs 12.61%/yr for GWOAX. Their correlation of 0.91 suggests significant overlap in exposure. MFWIX charges 0.84%/yr vs 0.01%/yr for GWOAX.

Performance

MFWIX vs. GWOAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Global Total Return Fund Class I (MFWIX) and GMO Global Developed Equity Allocation Fund (GWOAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MFWIX achieves a 4.64% return, which is significantly lower than GWOAX's 15.54% return. Over the past 10 years, MFWIX has underperformed GWOAX with an annualized return of 6.69%, while GWOAX has yielded a comparatively higher 12.61% annualized return.

MFWIX

• 1D: -0.06%
• 1M: 0.00%
• YTD: 4.64%
• 6M: 4.51%
• 1Y: 12.84%
• 3Y*: 10.59%
• 5Y*: 5.12%
• 10Y*: 6.69%

GWOAX

• 1D: 0.00%
• 1M: 1.05%
• YTD: 15.54%
• 6M: 14.81%
• 1Y: 36.10%
• 3Y*: 20.38%
• 5Y*: 11.28%
• 10Y*: 12.61%

*Multi-year figures are annualized to reflect compound growth (CAGR)

MFWIX vs. GWOAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MFWIX MFS Global Total Return Fund Class I	4.64%	15.70%	4.25%	10.52%	-10.62%	8.59%	9.63%	18.49%	-6.96%	15.00%
GWOAX GMO Global Developed Equity Allocation Fund	15.54%	28.37%	6.14%	22.49%	-14.10%	18.53%	10.53%	26.56%	-12.95%	25.63%

Correlation

The correlation between MFWIX and GWOAX is 0.87, 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	0.87
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (10Y) Calculated over the trailing 10-year period	0.90
Correlation (All Time) Calculated using the full available price history since Jan 3, 2006	0.91

The correlation between MFWIX and GWOAX has been stable across timeframes, ranging from 0.87 to 0.91 - a consistent structural relationship.

Return for Risk

MFWIX vs. GWOAX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

MFWIX

MFWIX Risk / Return Rank: 39
MFWIX Sharpe Ratio Rank: 43
MFWIX Sortino Ratio Rank: 45
MFWIX Omega Ratio Rank: 43
MFWIX Calmar Ratio Rank: 32
MFWIX Martin Ratio Rank: 33

GWOAX

GWOAX Risk / Return Rank: 89
GWOAX Sharpe Ratio Rank: 93
GWOAX Sortino Ratio Rank: 89
GWOAX Omega Ratio Rank: 84
GWOAX Calmar Ratio Rank: 89
GWOAX Martin Ratio Rank: 90

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

MFWIX vs. GWOAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Global Total Return Fund Class I (MFWIX) and GMO Global Developed Equity Allocation Fund (GWOAX). 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.

	MFWIX	GWOAX	Difference
Sharpe ratio: Return per unit of total volatility	1.78	2.90	-1.13
Sortino ratio: Return per unit of downside risk	2.59	3.97	-1.38
Omega ratio: Gain probability vs. loss probability	1.33	1.52	-0.20
Calmar ratio: Return relative to maximum drawdown	2.00	4.24	-2.24
Martin ratio: Return relative to average drawdown	7.03	16.80	-9.77

MFWIX vs. GWOAX - Sharpe Ratio Comparison

The current MFWIX Sharpe Ratio is 1.78, which is lower than the GWOAX Sharpe Ratio of 2.90. The chart below compares the historical Sharpe Ratios of MFWIX and GWOAX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

MFWIX vs. GWOAX - Drawdown Comparison

The maximum MFWIX drawdown since its inception was -33.01%, smaller than the maximum GWOAX drawdown of -49.84%. Use the drawdown chart below to compare losses from any high point for MFWIX and GWOAX.

Drawdown Indicators

	MFWIX	GWOAX	Difference
Max Drawdown Largest peak-to-trough decline	-33.01%	-49.84%	+16.83%
Max Drawdown (1Y) Largest decline over 1 year	-6.73%	-8.78%	+2.05%
Max Drawdown (3Y) Largest decline over 3 years	-8.63%	-16.11%	+7.48%
Max Drawdown (5Y) Largest decline over 5 years	-20.22%	-26.21%	+5.99%
Max Drawdown (10Y) Largest decline over 10 years	-23.36%	-35.28%	+11.92%
Current Drawdown Current decline from peak	-1.71%	-0.83%	-0.88%
Average Drawdown Average peak-to-trough decline	-3.81%	-8.98%	+5.17%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.91%	2.21%	-0.30%

Volatility

MFWIX vs. GWOAX - Volatility Comparison

The current volatility for MFS Global Total Return Fund Class I (MFWIX) is 2.24%, while GMO Global Developed Equity Allocation Fund (GWOAX) has a volatility of 4.28%. This indicates that MFWIX experiences smaller price fluctuations and is considered to be less risky than GWOAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MFWIX	GWOAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.24%	4.28%	-2.04%
Volatility (6M) Calculated over the trailing 6-month period	5.89%	10.05%	-4.16%
Volatility (1Y) Calculated over the trailing 1-year period	7.57%	12.85%	-5.28%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	9.16%	15.27%	-6.11%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	9.64%	16.51%	-6.87%

MFWIX vs. GWOAX - Expense Ratio Comparison

MFWIX has a 0.84% expense ratio, which is higher than GWOAX's 0.01% expense ratio.

Dividends

MFWIX vs. GWOAX - Dividend Comparison

MFWIX's dividend yield for the trailing twelve months is around 8.38%, more than GWOAX's 3.86% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GWOAX GMO Global Developed Equity Allocation Fund	3.86%	4.46%	0.60%	6.10%	7.27%	12.75%	3.85%	4.33%	3.02%	3.05%	6.43%	12.47%
MFWIX MFS Global Total Return Fund Class I	8.38%	8.77%	9.36%	3.98%	2.94%	10.71%	7.53%	4.70%	3.64%	2.36%	1.40%	4.59%

Frequently Asked Questions

Can I hold both MFWIX and GWOAX in my portfolio?

MFWIX and GWOAX have a correlation of 0.87, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MFWIX or GWOAX?

GWOAX has higher volatility (4.28%) compared to MFWIX (2.24%). In terms of maximum drawdown, MFWIX dropped -33.01% vs GWOAX's -49.84%.

Which has better risk-adjusted returns?

GWOAX currently has the higher Sharpe Ratio (2.90 vs 1.78), 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.