MWOFX vs. MIGFX

Last updated Jun 4, 2026

MWOFX (MFS Global Growth Fund) and MIGFX (MFS Massachusetts Investors Growth Stock Fund) are both mutual funds - MWOFX is a Global Equities fund managed by MFS, while MIGFX is a Large Cap Growth Equities fund managed by MFS. Over the past 10 years, MWOFX returned 10.46%/yr vs 14.65%/yr for MIGFX. Their correlation of 0.89 suggests significant overlap in exposure. MWOFX charges 1.22%/yr vs 0.70%/yr for MIGFX.

Performance

MWOFX vs. MIGFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Global Growth Fund (MWOFX) and MFS Massachusetts Investors Growth Stock Fund (MIGFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MWOFX achieves a -2.13% return, which is significantly lower than MIGFX's -0.34% return. Over the past 10 years, MWOFX has underperformed MIGFX with an annualized return of 10.46%, while MIGFX has yielded a comparatively higher 14.65% annualized return.

MWOFX

• 1D: -0.23%
• 1M: 1.91%
• YTD: -2.13%
• 6M: -1.52%
• 1Y: 3.58%
• 3Y*: 8.04%
• 5Y*: 4.13%
• 10Y*: 10.46%

MIGFX

• 1D: -0.62%
• 1M: 3.14%
• YTD: -0.34%
• 6M: 0.15%
• 1Y: 9.70%
• 3Y*: 15.64%
• 5Y*: 10.07%
• 10Y*: 14.65%

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

MWOFX vs. MIGFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MWOFX MFS Global Growth Fund	-2.13%	7.17%	10.68%	20.63%	-19.28%	18.33%	20.23%	35.37%	-4.94%	31.13%
MIGFX MFS Massachusetts Investors Growth Stock Fund	-0.34%	9.97%	27.25%	24.13%	-19.20%	26.06%	22.55%	39.89%	0.81%	28.68%

Correlation

The correlation between MWOFX and MIGFX is 0.95 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.97
Correlation (5Y) Calculated over the trailing 5-year period	0.97
Correlation (10Y) Calculated over the trailing 10-year period	0.97
Correlation (All Time) Calculated using the full available price history since Nov 19, 1993	0.89

The correlation between MWOFX and MIGFX has been stable across timeframes, ranging from 0.89 to 0.97 - a consistent structural relationship.

Return for Risk

MWOFX vs. MIGFX — Risk / Return Rank

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

MWOFX

MWOFX Risk / Return Rank: 4
MWOFX Sharpe Ratio Rank: 5
MWOFX Sortino Ratio Rank: 4
MWOFX Omega Ratio Rank: 4
MWOFX Calmar Ratio Rank: 4
MWOFX Martin Ratio Rank: 4

MIGFX

MIGFX Risk / Return Rank: 9
MIGFX Sharpe Ratio Rank: 11
MIGFX Sortino Ratio Rank: 10
MIGFX Omega Ratio Rank: 10
MIGFX Calmar Ratio Rank: 8
MIGFX Martin Ratio Rank: 8

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.

MWOFX vs. MIGFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Global Growth Fund (MWOFX) and MFS Massachusetts Investors Growth Stock Fund (MIGFX). 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.

	MWOFX	MIGFX	Difference
Sharpe ratio: Return per unit of total volatility	0.33	0.83	-0.50
Sortino ratio: Return per unit of downside risk	0.54	1.22	-0.68
Omega ratio: Gain probability vs. loss probability	1.06	1.15	-0.08
Calmar ratio: Return relative to maximum drawdown	0.29	0.76	-0.47
Martin ratio: Return relative to average drawdown	0.91	2.55	-1.65
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MWOFX vs. MIGFX - Sharpe Ratio Comparison

The current MWOFX Sharpe Ratio is 0.33, which is lower than the MIGFX Sharpe Ratio of 0.83. The chart below compares the historical Sharpe Ratios of MWOFX and MIGFX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	MWOFX	MIGFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.33	0.83	-0.50
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.26	0.58	-0.31
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.63	0.81	-0.18
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	0.39	+0.09

Drawdowns

MWOFX vs. MIGFX - Drawdown Comparison

The maximum MWOFX drawdown since its inception was -56.10%, smaller than the maximum MIGFX drawdown of -61.83%. Use the drawdown chart below to compare losses from any high point for MWOFX and MIGFX.

Drawdown Indicators

	MWOFX	MIGFX	Difference
Max Drawdown Largest peak-to-trough decline	-56.10%	-61.83%	+5.73%
Max Drawdown (1Y) Largest decline over 1 year	-13.82%	-13.77%	-0.05%
Max Drawdown (3Y) Largest decline over 3 years	-16.45%	-18.68%	+2.23%
Max Drawdown (5Y) Largest decline over 5 years	-27.64%	-26.67%	-0.97%
Max Drawdown (10Y) Largest decline over 10 years	-31.68%	-32.42%	+0.74%
Current Drawdown Current decline from peak	-4.48%	-2.40%	-2.08%
Average Drawdown Average peak-to-trough decline	-11.91%	-18.96%	+7.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.40%	4.11%	+0.29%

Volatility

MWOFX vs. MIGFX - Volatility Comparison

The current volatility for MFS Global Growth Fund (MWOFX) is 3.15%, while MFS Massachusetts Investors Growth Stock Fund (MIGFX) has a volatility of 3.42%. This indicates that MWOFX experiences smaller price fluctuations and is considered to be less risky than MIGFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MWOFX	MIGFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.15%	3.42%	-0.27%
Volatility (6M) Calculated over the trailing 6-month period	9.37%	9.84%	-0.47%
Volatility (1Y) Calculated over the trailing 1-year period	12.06%	12.68%	-0.62%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.80%	17.52%	-1.72%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.61%	18.21%	-1.60%

MWOFX vs. MIGFX - Expense Ratio Comparison

MWOFX has a 1.22% expense ratio, which is higher than MIGFX's 0.70% expense ratio.

Dividends

MWOFX vs. MIGFX - Dividend Comparison

MWOFX's dividend yield for the trailing twelve months is around 5.54%, less than MIGFX's 11.43% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MIGFX MFS Massachusetts Investors Growth Stock Fund	11.43%	11.39%	17.15%	4.11%	4.49%	10.47%	7.43%	7.39%	10.76%	6.87%	5.12%	6.51%
MWOFX MFS Global Growth Fund	5.54%	5.42%	5.14%	2.09%	3.60%	6.25%	3.13%	1.86%	5.00%	3.43%	1.68%	6.08%

Frequently Asked Questions

Can I hold both MWOFX and MIGFX in my portfolio?

With a correlation of 0.95, MWOFX and MIGFX 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.

Which is riskier, MWOFX or MIGFX?

MIGFX has higher volatility (3.42%) compared to MWOFX (3.15%). In terms of maximum drawdown, MWOFX dropped -56.10% vs MIGFX's -61.83%.

Which has better risk-adjusted returns?

MIGFX currently has the higher Sharpe Ratio (0.83 vs 0.33), 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.