MWNIX vs. WAIOX

Last updated Jul 17, 2026

MWNIX (MFS International New Discovery Fund) and WAIOX (Wasatch International Opportunities Fund) are both Foreign Small & Mid Cap Equities funds. Over the past 10 years, MWNIX returned 6.47%/yr vs 4.10%/yr for WAIOX. A 0.77 correlation means they provide meaningful diversification when combined. MWNIX charges 1.03%/yr vs 1.96%/yr for WAIOX.

Performance

MWNIX vs. WAIOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS International New Discovery Fund (MWNIX) and Wasatch International Opportunities Fund (WAIOX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MWNIX achieves a 6.92% return, which is significantly lower than WAIOX's 8.38% return. Over the past 10 years, MWNIX has outperformed WAIOX with an annualized return of 6.47%, while WAIOX has yielded a comparatively lower 4.10% annualized return.

MWNIX

• 1D: 0.50%
• 1M: -0.58%
• 6M: 4.38%
• YTD: 6.92%
• 1Y: 9.16%
• 3Y*: 9.07%
• 5Y*: 3.05%
• 10Y*: 6.47%

WAIOX

• 1D: 0.52%
• 1M: 0.52%
• 6M: 7.78%
• YTD: 8.38%
• 1Y: -2.57%
• 3Y*: 3.71%
• 5Y*: -6.28%
• 10Y*: 4.10%

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

MWNIX vs. WAIOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MWNIX MFS International New Discovery Fund	6.92%	16.88%	0.90%	13.03%	-18.63%	5.06%	9.98%	22.85%	-10.41%	30.67%
WAIOX Wasatch International Opportunities Fund	8.38%	2.57%	-4.49%	10.64%	-36.63%	-1.36%	41.75%	32.19%	-14.69%	27.69%

Correlation

The correlation between MWNIX and WAIOX is 0.75, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.75
Correlation (3Y) Calculated over the trailing 3-year period	0.78
Correlation (5Y) Calculated over the trailing 5-year period	0.82
Correlation (10Y) Calculated over the trailing 10-year period	0.77
Correlation (All Time) Calculated using the full available price history since Jan 27, 2005	0.77

The correlation between MWNIX and WAIOX has been stable across timeframes, ranging from 0.75 to 0.82 - a consistent structural relationship.

Return for Risk

MWNIX vs. WAIOX — Risk / Return Rank

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

MWNIX

MWNIX Risk / Return Rank: 12
MWNIX Sharpe Ratio Rank: 13
MWNIX Sortino Ratio Rank: 13
MWNIX Omega Ratio Rank: 13
MWNIX Calmar Ratio Rank: 11
MWNIX Martin Ratio Rank: 13

WAIOX

WAIOX Risk / Return Rank: 2
WAIOX Sharpe Ratio Rank: 2
WAIOX Sortino Ratio Rank: 2
WAIOX Omega Ratio Rank: 2
WAIOX Calmar Ratio Rank: 2
WAIOX Martin Ratio Rank: 2

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.

MWNIX vs. WAIOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS International New Discovery Fund (MWNIX) and Wasatch International Opportunities Fund (WAIOX). 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.

	MWNIX	WAIOX	Difference
Sharpe ratio: Return per unit of total volatility	0.76	-0.14	+0.90
Sortino ratio: Return per unit of downside risk	1.14	-0.09	+1.24
Omega ratio: Gain probability vs. loss probability	1.15	0.99	+0.16
Calmar ratio: Return relative to maximum drawdown	0.80	-0.10	+0.90
Martin ratio: Return relative to average drawdown	2.67	-0.23	+2.89

MWNIX vs. WAIOX - Sharpe Ratio Comparison

The current MWNIX Sharpe Ratio is 0.76, which is higher than the WAIOX Sharpe Ratio of -0.14. The chart below compares the historical Sharpe Ratios of MWNIX and WAIOX, 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

MWNIX vs. WAIOX - Drawdown Comparison

The maximum MWNIX drawdown since its inception was -58.38%, smaller than the maximum WAIOX drawdown of -68.04%. Use the drawdown chart below to compare losses from any high point for MWNIX and WAIOX.

Drawdown Indicators

	MWNIX	WAIOX	Difference
Max Drawdown Largest peak-to-trough decline	-58.38%	-68.04%	+9.66%
Max Drawdown (1Y) Largest decline over 1 year	-11.78%	-19.38%	+7.60%
Max Drawdown (3Y) Largest decline over 3 years	-15.12%	-21.23%	+6.11%
Max Drawdown (5Y) Largest decline over 5 years	-33.67%	-50.21%	+16.54%
Max Drawdown (10Y) Largest decline over 10 years	-34.72%	-50.21%	+15.49%
Current Drawdown Current decline from peak	-1.69%	-32.68%	+30.99%
Average Drawdown Average peak-to-trough decline	-9.54%	-16.90%	+7.36%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.53%	8.81%	-5.28%

Volatility

MWNIX vs. WAIOX - Volatility Comparison

MFS International New Discovery Fund (MWNIX) has a higher volatility of 4.25% compared to Wasatch International Opportunities Fund (WAIOX) at 3.54%. This indicates that MWNIX's price experiences larger fluctuations and is considered to be riskier than WAIOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MWNIX	WAIOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.25%	3.54%	+0.71%
Volatility (6M) Calculated over the trailing 6-month period	10.69%	12.50%	-1.81%
Volatility (1Y) Calculated over the trailing 1-year period	12.36%	14.74%	-2.38%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.33%	17.20%	-3.87%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	13.72%	16.56%	-2.84%

MWNIX vs. WAIOX - Expense Ratio Comparison

MWNIX has a 1.03% expense ratio, which is lower than WAIOX's 1.96% expense ratio.

Dividends

MWNIX vs. WAIOX - Dividend Comparison

MWNIX's dividend yield for the trailing twelve months is around 3.03%, less than WAIOX's 63.01% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MWNIX MFS International New Discovery Fund	3.03%	3.24%	7.61%	4.05%	5.68%	5.06%	3.90%	2.67%	6.68%	1.63%	1.09%	1.12%
WAIOX Wasatch International Opportunities Fund	63.01%	68.29%	0.00%	0.00%	0.00%	14.35%	1.98%	2.38%	2.73%	7.00%	0.00%	4.76%

Frequently Asked Questions

Can I hold both MWNIX and WAIOX in my portfolio?

MWNIX and WAIOX have a correlation of 0.75, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MWNIX or WAIOX?

MWNIX has higher volatility (4.25%) compared to WAIOX (3.54%). In terms of maximum drawdown, MWNIX dropped -58.38% vs WAIOX's -68.04%.

Which has better risk-adjusted returns?

MWNIX currently has the higher Sharpe Ratio (0.76 vs -0.14), 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.