RYIPX vs. MWNIX

Last updated Jun 4, 2026

RYIPX (Royce International Premier Fund) and MWNIX (MFS International New Discovery Fund) are both Foreign Small & Mid Cap Equities funds. Over the past 10 years, RYIPX returned 4.74%/yr vs 6.33%/yr for MWNIX. Their correlation of 0.88 suggests significant overlap in exposure. RYIPX charges 1.44%/yr vs 1.03%/yr for MWNIX.

Performance

RYIPX vs. MWNIX - Performance Comparison

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

Returns By Period

In the year-to-date period, RYIPX achieves a 4.18% return, which is significantly lower than MWNIX's 6.86% return. Over the past 10 years, RYIPX has underperformed MWNIX with an annualized return of 4.74%, while MWNIX has yielded a comparatively higher 6.33% annualized return.

RYIPX

• 1D: -0.44%
• 1M: 2.84%
• YTD: 4.18%
• 6M: 4.81%
• 1Y: 3.26%
• 3Y*: 2.57%
• 5Y*: -3.43%
• 10Y*: 4.74%

MWNIX

• 1D: -0.11%
• 1M: 2.42%
• YTD: 6.86%
• 6M: 7.86%
• 1Y: 11.22%
• 3Y*: 10.11%
• 5Y*: 3.01%
• 10Y*: 6.33%

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

RYIPX vs. MWNIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYIPX Royce International Premier Fund	4.18%	9.37%	-7.37%	7.68%	-27.27%	5.77%	15.74%	34.22%	-12.76%	39.80%
MWNIX MFS International New Discovery Fund	6.86%	16.88%	0.90%	13.03%	-18.63%	5.06%	9.98%	22.85%	-10.41%	30.67%

Correlation

The correlation between RYIPX and MWNIX is 0.80, 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	0.80
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.88
Correlation (All Time) Calculated using the full available price history since Jan 4, 2011	0.88

The correlation between RYIPX and MWNIX has been stable across timeframes, ranging from 0.80 to 0.89 - a consistent structural relationship.

Return for Risk

RYIPX vs. MWNIX — Risk / Return Rank

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

RYIPX

RYIPX Risk / Return Rank: 4
RYIPX Sharpe Ratio Rank: 4
RYIPX Sortino Ratio Rank: 4
RYIPX Omega Ratio Rank: 4
RYIPX Calmar Ratio Rank: 3
RYIPX Martin Ratio Rank: 3

MWNIX

MWNIX Risk / Return Rank: 11
MWNIX Sharpe Ratio Rank: 12
MWNIX Sortino Ratio Rank: 12
MWNIX Omega Ratio Rank: 12
MWNIX Calmar Ratio Rank: 9
MWNIX Martin Ratio Rank: 11

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.

RYIPX vs. MWNIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Royce International Premier Fund (RYIPX) and MFS International New Discovery Fund (MWNIX). 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.

	RYIPX	MWNIX	Difference
Sharpe ratio: Return per unit of total volatility	0.21	0.93	-0.71
Sortino ratio: Return per unit of downside risk	0.39	1.39	-1.00
Omega ratio: Gain probability vs. loss probability	1.05	1.17	-0.13
Calmar ratio: Return relative to maximum drawdown	0.16	0.90	-0.74
Martin ratio: Return relative to average drawdown	0.40	3.10	-2.70
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RYIPX vs. MWNIX - Sharpe Ratio Comparison

The current RYIPX Sharpe Ratio is 0.21, which is lower than the MWNIX Sharpe Ratio of 0.93. The chart below compares the historical Sharpe Ratios of RYIPX and MWNIX, 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

	RYIPX	MWNIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.21	0.93	-0.71
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.22	0.23	-0.45
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.31	0.45	-0.14
Sharpe Ratio (All Time) Calculated using the full available price history	0.34	0.58	-0.24

Drawdowns

RYIPX vs. MWNIX - Drawdown Comparison

The maximum RYIPX drawdown since its inception was -42.14%, smaller than the maximum MWNIX drawdown of -58.38%. Use the drawdown chart below to compare losses from any high point for RYIPX and MWNIX.

Drawdown Indicators

	RYIPX	MWNIX	Difference
Max Drawdown Largest peak-to-trough decline	-42.14%	-58.38%	+16.24%
Max Drawdown (1Y) Largest decline over 1 year	-16.68%	-11.78%	-4.90%
Max Drawdown (3Y) Largest decline over 3 years	-17.43%	-15.12%	-2.31%
Max Drawdown (5Y) Largest decline over 5 years	-42.14%	-33.67%	-8.47%
Max Drawdown (10Y) Largest decline over 10 years	-42.14%	-34.72%	-7.42%
Current Drawdown Current decline from peak	-24.55%	-1.69%	-22.86%
Average Drawdown Average peak-to-trough decline	-12.35%	-9.57%	-2.78%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.86%	3.42%	+3.44%

Volatility

RYIPX vs. MWNIX - Volatility Comparison

The current volatility for Royce International Premier Fund (RYIPX) is 3.13%, while MFS International New Discovery Fund (MWNIX) has a volatility of 3.50%. This indicates that RYIPX experiences smaller price fluctuations and is considered to be less risky than MWNIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RYIPX	MWNIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.13%	3.50%	-0.37%
Volatility (6M) Calculated over the trailing 6-month period	10.56%	9.49%	+1.07%
Volatility (1Y) Calculated over the trailing 1-year period	13.07%	11.54%	+1.53%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.42%	13.18%	+2.24%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.23%	13.99%	+1.24%

RYIPX vs. MWNIX - Expense Ratio Comparison

RYIPX has a 1.44% expense ratio, which is higher than MWNIX's 1.03% expense ratio.

Dividends

RYIPX vs. MWNIX - Dividend Comparison

RYIPX's dividend yield for the trailing twelve months is around 0.76%, less than MWNIX's 3.03% 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%
RYIPX Royce International Premier Fund	0.76%	0.79%	4.10%	2.18%	3.18%	4.51%	0.00%	0.20%	0.00%	0.71%	2.40%	2.61%

Frequently Asked Questions

Can I hold both RYIPX and MWNIX in my portfolio?

RYIPX and MWNIX have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RYIPX or MWNIX?

MWNIX has higher volatility (3.50%) compared to RYIPX (3.13%). In terms of maximum drawdown, RYIPX dropped -42.14% vs MWNIX's -58.38%.

Which has better risk-adjusted returns?

MWNIX currently has the higher Sharpe Ratio (0.93 vs 0.21), 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.