MJFOX vs. CNJFX

Last updated Jun 3, 2026

MJFOX (Matthews Japan Fund) and CNJFX (Commonwealth Japan Fund) are both Japan Equities funds. Over the past 10 years, MJFOX returned 9.11%/yr vs 5.07%/yr for CNJFX. A 0.76 correlation means they provide meaningful diversification when combined. MJFOX charges 1.05%/yr vs 1.75%/yr for CNJFX.

Performance

MJFOX vs. CNJFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Matthews Japan Fund (MJFOX) and Commonwealth Japan Fund (CNJFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MJFOX achieves a 17.30% return, which is significantly lower than CNJFX's 20.14% return. Over the past 10 years, MJFOX has outperformed CNJFX with an annualized return of 9.11%, while CNJFX has yielded a comparatively lower 5.07% annualized return.

MJFOX

• 1D: -0.07%
• 1M: 5.96%
• YTD: 17.30%
• 6M: 18.50%
• 1Y: 27.12%
• 3Y*: 23.18%
• 5Y*: 8.66%
• 10Y*: 9.11%

CNJFX

• 1D: -0.76%
• 1M: 8.02%
• YTD: 20.14%
• 6M: 22.44%
• 1Y: 31.53%
• 3Y*: 13.70%
• 5Y*: 4.65%
• 10Y*: 5.07%

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

MJFOX vs. CNJFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MJFOX Matthews Japan Fund	17.30%	22.72%	16.31%	25.79%	-27.84%	-5.79%	29.80%	26.08%	-20.12%	33.22%
CNJFX Commonwealth Japan Fund	20.14%	18.27%	-1.53%	14.15%	-18.49%	-7.92%	9.93%	19.15%	-10.80%	20.61%

Correlation

The correlation between MJFOX and CNJFX is 0.73, 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	0.73
Correlation (3Y) Calculated over the trailing 3-year period	0.74
Correlation (5Y) Calculated over the trailing 5-year period	0.80
Correlation (10Y) Calculated over the trailing 10-year period	0.76
Correlation (All Time) Calculated using the full available price history since Jan 4, 1999	0.76

The correlation between MJFOX and CNJFX has been stable across timeframes, ranging from 0.73 to 0.80 - a consistent structural relationship.

Return for Risk

MJFOX vs. CNJFX — Risk / Return Rank

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

MJFOX

MJFOX Risk / Return Rank: 29
MJFOX Sharpe Ratio Rank: 24
MJFOX Sortino Ratio Rank: 25
MJFOX Omega Ratio Rank: 25
MJFOX Calmar Ratio Rank: 35
MJFOX Martin Ratio Rank: 37

CNJFX

CNJFX Risk / Return Rank: 45
CNJFX Sharpe Ratio Rank: 41
CNJFX Sortino Ratio Rank: 40
CNJFX Omega Ratio Rank: 38
CNJFX Calmar Ratio Rank: 59
CNJFX Martin Ratio Rank: 47

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.

MJFOX vs. CNJFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Matthews Japan Fund (MJFOX) and Commonwealth Japan Fund (CNJFX). 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.

	MJFOX	CNJFX	Difference
Sharpe ratio Return per unit of total volatility	1.41	1.87	-0.46
Sortino ratio Return per unit of downside risk	2.12	2.67	-0.55
Omega ratio Gain probability vs. loss probability	1.26	1.33	-0.07
Calmar ratio Return relative to maximum drawdown	2.29	2.96	-0.67
Martin ratio Return relative to average drawdown	8.22	9.89	-1.68
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MJFOX vs. CNJFX - Sharpe Ratio Comparison

The current MJFOX Sharpe Ratio is 1.41, which is comparable to the CNJFX Sharpe Ratio of 1.87. The chart below compares the historical Sharpe Ratios of MJFOX and CNJFX, 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

	MJFOX	CNJFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.41	1.87	-0.46
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.43	0.26	+0.17
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.49	0.29	+0.19
Sharpe Ratio (All Time) Calculated using the full available price history	0.37	-0.05	+0.42

Drawdowns

MJFOX vs. CNJFX - Drawdown Comparison

The maximum MJFOX drawdown since its inception was -63.52%, smaller than the maximum CNJFX drawdown of -73.98%. Use the drawdown chart below to compare losses from any high point for MJFOX and CNJFX.

Drawdown Indicators

	MJFOX	CNJFX	Difference
Max Drawdown Largest peak-to-trough decline	-63.52%	-73.98%	+10.46%
Max Drawdown (1Y) Largest decline over 1 year	-14.53%	-11.44%	-3.09%
Max Drawdown (3Y) Largest decline over 3 years	-17.14%	-17.82%	+0.68%
Max Drawdown (5Y) Largest decline over 5 years	-42.85%	-36.47%	-6.38%
Max Drawdown (10Y) Largest decline over 10 years	-42.85%	-36.47%	-6.38%
Current Drawdown Current decline from peak	-0.21%	-29.28%	+29.07%
Average Drawdown Average peak-to-trough decline	-21.26%	-49.91%	+28.65%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.04%	3.42%	+0.62%

Volatility

MJFOX vs. CNJFX - Volatility Comparison

Matthews Japan Fund (MJFOX) has a higher volatility of 4.98% compared to Commonwealth Japan Fund (CNJFX) at 3.99%. This indicates that MJFOX's price experiences larger fluctuations and is considered to be riskier than CNJFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MJFOX	CNJFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.98%	3.99%	+0.99%
Volatility (6M) Calculated over the trailing 6-month period	17.36%	13.49%	+3.87%
Volatility (1Y) Calculated over the trailing 1-year period	21.93%	17.68%	+4.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.41%	18.04%	+2.37%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.86%	17.30%	+1.56%

MJFOX vs. CNJFX - Expense Ratio Comparison

MJFOX has a 1.05% expense ratio, which is lower than CNJFX's 1.75% expense ratio.

Dividends

MJFOX vs. CNJFX - Dividend Comparison

MJFOX's dividend yield for the trailing twelve months is around 1.67%, more than CNJFX's 1.00% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
CNJFX Commonwealth Japan Fund	1.00%	1.20%	0.58%	0.10%	0.00%	4.25%	0.00%	0.00%	0.00%	0.00%	0.00%
MJFOX Matthews Japan Fund	1.67%	1.96%	2.12%	6.09%	7.19%	8.08%	10.15%	8.63%	4.14%	3.90%	1.15%

Frequently Asked Questions

Can I hold both MJFOX and CNJFX in my portfolio?

MJFOX and CNJFX have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MJFOX or CNJFX?

MJFOX has higher volatility (4.98%) compared to CNJFX (3.99%). In terms of maximum drawdown, MJFOX dropped -63.52% vs CNJFX's -73.98%.

Which has better risk-adjusted returns?

CNJFX currently has the higher Sharpe Ratio (1.87 vs 1.41), 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.