QISIX vs. MWNIX

Last updated Apr 1, 2026

Compare and contrast key facts about Pear Tree Polaris International Opportunities Fund (QISIX) and MFS International New Discovery Fund (MWNIX).

QISIX is managed by Pear Tree Funds. It was launched on Jan 28, 2019. MWNIX is managed by MFS. It was launched on Oct 8, 1997.

Performance

QISIX vs. MWNIX - Performance Comparison

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

QISIX vs. MWNIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
QISIX Pear Tree Polaris International Opportunities Fund	-2.49%	18.14%	-5.09%	16.38%	-19.17%	3.48%	13.72%	18.84%
MWNIX MFS International New Discovery Fund	-4.10%	16.88%	0.90%	13.03%	-18.63%	5.06%	9.98%	15.53%

Returns By Period

In the year-to-date period, QISIX achieves a -2.49% return, which is significantly higher than MWNIX's -4.10% return.

QISIX

• 1D: -0.77%
• 1M: -9.59%
• YTD: -2.49%
• 6M: -4.04%
• 1Y: 11.49%
• 3Y*: 5.28%
• 5Y*: 0.39%
• 10Y*: —

MWNIX

• 1D: -0.25%
• 1M: -11.78%
• YTD: -4.10%
• 6M: -4.89%
• 1Y: 9.37%
• 3Y*: 6.45%
• 5Y*: 1.70%
• 10Y*: 5.54%

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

QISIX vs. MWNIX - Expense Ratio Comparison

QISIX has a 1.22% expense ratio, which is higher than MWNIX's 1.03% expense ratio.

QISIX

Pear Tree Polaris International Opportunities Fund

MWNIX

MFS International New Discovery Fund

Return for Risk

QISIX vs. MWNIX — Risk / Return Rank

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

QISIX

QISIX Risk / Return Rank: 25
QISIX Sharpe Ratio Rank: 28
QISIX Sortino Ratio Rank: 24
QISIX Omega Ratio Rank: 24
QISIX Calmar Ratio Rank: 26
QISIX Martin Ratio Rank: 24

MWNIX

MWNIX Risk / Return Rank: 23
MWNIX Sharpe Ratio Rank: 28
MWNIX Sortino Ratio Rank: 23
MWNIX Omega Ratio Rank: 23
MWNIX Calmar Ratio Rank: 21
MWNIX Martin Ratio Rank: 22

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.

QISIX vs. MWNIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Pear Tree Polaris International Opportunities Fund (QISIX) 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.

	QISIX	MWNIX	Difference
Sharpe ratio Return per unit of total volatility	0.69	0.68	+0.01
Sortino ratio Return per unit of downside risk	0.97	0.93	+0.04
Omega ratio Gain probability vs. loss probability	1.14	1.13	+0.01
Calmar ratio Return relative to maximum drawdown	0.76	0.63	+0.13
Martin ratio Return relative to average drawdown	2.58	2.39	+0.18
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

QISIX vs. MWNIX - Sharpe Ratio Comparison

The current QISIX Sharpe Ratio is 0.69, which is comparable to the MWNIX Sharpe Ratio of 0.68. The chart below compares the historical Sharpe Ratios of QISIX and MWNIX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	QISIX	MWNIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.69	0.68	+0.01
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.03	0.13	-0.10
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.40	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.33	0.56	-0.23

Correlation

The correlation between QISIX and MWNIX is 0.71, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

QISIX vs. MWNIX - Dividend Comparison

QISIX's dividend yield for the trailing twelve months is around 1.94%, less than MWNIX's 3.38% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
QISIX Pear Tree Polaris International Opportunities Fund	1.94%	1.89%	3.29%	1.27%	1.66%	2.52%	0.68%	0.30%	0.00%	0.00%	0.00%	0.00%
MWNIX MFS International New Discovery Fund	3.38%	3.24%	7.61%	4.05%	5.68%	5.06%	3.90%	2.67%	6.68%	1.63%	1.09%	1.12%

Drawdowns

QISIX vs. MWNIX - Drawdown Comparison

The maximum QISIX drawdown since its inception was -41.11%, smaller than the maximum MWNIX drawdown of -58.38%. Use the drawdown chart below to compare losses from any high point for QISIX and MWNIX.

Drawdown Indicators

	QISIX	MWNIX	Difference
Max Drawdown Largest peak-to-trough decline	-41.11%	-58.38%	+17.27%
Max Drawdown (1Y) Largest decline over 1 year	-10.48%	-11.78%	+1.30%
Max Drawdown (5Y) Largest decline over 5 years	-37.79%	-33.67%	-4.12%
Max Drawdown (10Y) Largest decline over 10 years	—	-34.72%	—
Current Drawdown Current decline from peak	-9.78%	-11.78%	+2.00%
Average Drawdown Average peak-to-trough decline	-12.35%	-9.61%	-2.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.21%	3.09%	+0.12%

Volatility

QISIX vs. MWNIX - Volatility Comparison

Pear Tree Polaris International Opportunities Fund (QISIX) has a higher volatility of 5.98% compared to MFS International New Discovery Fund (MWNIX) at 5.09%. This indicates that QISIX'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.

Volatility by Period

	QISIX	MWNIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.98%	5.09%	+0.89%
Volatility (6M) Calculated over the trailing 6-month period	9.09%	8.21%	+0.88%
Volatility (1Y) Calculated over the trailing 1-year period	14.16%	12.11%	+2.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.66%	13.02%	+1.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.96%	13.90%	+2.06%