PRIDX vs. MWNIX
PRIDX (T. Rowe Price International Discovery Fund) and MWNIX (MFS International New Discovery Fund) are both Foreign Small & Mid Cap Equities funds. Over the past 10 years, PRIDX returned 9.52%/yr vs 6.93%/yr for MWNIX. Their correlation of 0.87 suggests significant overlap in exposure. PRIDX charges 1.23%/yr vs 1.03%/yr for MWNIX.
Performance
PRIDX vs. MWNIX - Performance Comparison
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Returns By Period
In the year-to-date period, PRIDX achieves a 8.65% return, which is significantly higher than MWNIX's 7.13% return. Over the past 10 years, PRIDX has outperformed MWNIX with an annualized return of 9.52%, while MWNIX has yielded a comparatively lower 6.93% annualized return.
PRIDX
- 1D
- -0.28%
- 1M
- 0.54%
- YTD
- 8.65%
- 6M
- 8.62%
- 1Y
- 21.77%
- 3Y*
- 15.06%
- 5Y*
- 1.77%
- 10Y*
- 9.52%
MWNIX
- 1D
- -0.55%
- 1M
- 0.92%
- YTD
- 7.13%
- 6M
- 6.65%
- 1Y
- 11.60%
- 3Y*
- 10.61%
- 5Y*
- 3.00%
- 10Y*
- 6.93%
PRIDX vs. MWNIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PRIDX T. Rowe Price International Discovery Fund | 8.65% | 25.53% | 3.65% | 13.19% | -30.34% | 7.31% | 38.78% | 25.01% | -17.54% | 38.56% |
MWNIX MFS International New Discovery Fund | 7.13% | 16.88% | 0.90% | 13.03% | -18.63% | 5.06% | 9.98% | 22.85% | -10.41% | 30.67% |
Correlation
The correlation between PRIDX and MWNIX is 0.92, 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 | 0.92 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.90 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.91 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.90 |
Correlation (All Time) Calculated using the full available price history since Oct 9, 1997 | 0.87 |
The correlation between PRIDX and MWNIX has been stable across timeframes, ranging from 0.87 to 0.92 - a consistent structural relationship.
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Return for Risk
PRIDX vs. MWNIX — Risk / Return Rank
PRIDX
MWNIX
PRIDX vs. MWNIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price International Discovery Fund (PRIDX) 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.
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.
| PRIDX | MWNIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.54 | ||
| Sortino ratioReturn per unit of downside risk | +0.70 | ||
| Omega ratioGain probability vs. loss probability | 1.29 | 1.19 | +0.09 |
| Calmar ratioReturn relative to maximum drawdown | 1.69 | 1.02 | +0.67 |
| Martin ratioReturn relative to average drawdown | 6.18 | 3.45 | +2.73 |
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Drawdowns
PRIDX vs. MWNIX - Drawdown Comparison
The maximum PRIDX drawdown since its inception was -65.01%, which is greater than MWNIX's maximum drawdown of -58.38%. Use the drawdown chart below to compare losses from any high point for PRIDX and MWNIX.
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Drawdown Indicators
| PRIDX | MWNIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -65.01% | -58.38% | -6.63% |
Max Drawdown (1Y)Largest decline over 1 year | -13.50% | -11.78% | -1.72% |
Max Drawdown (3Y)Largest decline over 3 years | -15.86% | -15.12% | -0.74% |
Max Drawdown (5Y)Largest decline over 5 years | -43.86% | -33.67% | -10.19% |
Max Drawdown (10Y)Largest decline over 10 years | -43.86% | -34.72% | -9.14% |
Current DrawdownCurrent decline from peak | -1.52% | -1.45% | -0.07% |
Average DrawdownAverage peak-to-trough decline | -16.34% | -9.56% | -6.78% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.69% | 3.47% | +0.22% |
Volatility
PRIDX vs. MWNIX - Volatility Comparison
T. Rowe Price International Discovery Fund (PRIDX) has a higher volatility of 5.20% compared to MFS International New Discovery Fund (MWNIX) at 4.13%. This indicates that PRIDX's price experiences larger fluctuations and is considered to be riskier than MWNIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PRIDX | MWNIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.20% | 4.13% | +1.07% |
Volatility (6M)Calculated over the trailing 6-month period | 12.52% | 10.07% | +2.45% |
Volatility (1Y)Calculated over the trailing 1-year period | 14.78% | 11.93% | +2.85% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 16.82% | 13.26% | +3.56% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 16.65% | 13.96% | +2.69% |
PRIDX vs. MWNIX - Expense Ratio Comparison
PRIDX has a 1.23% expense ratio, which is higher than MWNIX's 1.03% expense ratio.
Dividends
PRIDX vs. MWNIX - Dividend Comparison
PRIDX's dividend yield for the trailing twelve months is around 4.50%, more than MWNIX's 3.02% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MWNIX MFS International New Discovery Fund | 3.02% | 3.24% | 7.61% | 4.05% | 5.68% | 5.06% | 3.90% | 2.67% | 6.68% | 1.63% | 1.09% | 1.12% |
PRIDX T. Rowe Price International Discovery Fund | 4.50% | 4.88% | 4.03% | 2.05% | 3.18% | 15.35% | 4.30% | 1.48% | 6.20% | 3.11% | 1.81% | 5.00% |
Frequently Asked Questions
With a correlation of 0.92, PRIDX and MWNIX 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.
PRIDX has higher volatility (5.20%) compared to MWNIX (4.13%). In terms of maximum drawdown, PRIDX dropped -65.01% vs MWNIX's -58.38%.
PRIDX currently has the higher Sharpe Ratio (1.55 vs 1.01), 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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