CMNWX vs. MRGAX

Last updated Jun 23, 2026

CMNWX (Principal Capital Appreciation Fund) and MRGAX (MFS Core Equity Fund) are both Large Cap Blend Equities funds. Over the past 10 years, CMNWX returned 15.51%/yr vs 14.18%/yr for MRGAX. Their correlation of 0.92 suggests significant overlap in exposure. CMNWX charges 0.80%/yr vs 0.93%/yr for MRGAX.

Performance

CMNWX vs. MRGAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Principal Capital Appreciation Fund (CMNWX) and MFS Core Equity Fund (MRGAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CMNWX achieves a 9.31% return, which is significantly higher than MRGAX's 6.93% return. Over the past 10 years, CMNWX has outperformed MRGAX with an annualized return of 15.51%, while MRGAX has yielded a comparatively lower 14.18% annualized return.

CMNWX

• 1D: 1.04%
• 1M: 0.93%
• YTD: 9.31%
• 6M: 8.77%
• 1Y: 24.02%
• 3Y*: 21.81%
• 5Y*: 14.55%
• 10Y*: 15.51%

MRGAX

• 1D: 1.02%
• 1M: 0.58%
• YTD: 6.93%
• 6M: 6.42%
• 1Y: 18.81%
• 3Y*: 16.32%
• 5Y*: 10.46%
• 10Y*: 14.18%

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

CMNWX vs. MRGAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CMNWX Principal Capital Appreciation Fund	9.31%	13.27%	32.14%	25.01%	-16.37%	27.45%	18.36%	32.21%	-4.12%	20.64%
MRGAX MFS Core Equity Fund	6.93%	12.33%	20.01%	22.88%	-17.24%	25.26%	18.56%	34.66%	-4.12%	23.79%

Correlation

The correlation between CMNWX and MRGAX is 0.95, 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	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.95
Correlation (5Y) Calculated over the trailing 5-year period	0.97
Correlation (10Y) Calculated over the trailing 10-year period	0.96
Correlation (All Time) Calculated using the full available price history since Jun 20, 1996	0.92

The correlation between CMNWX and MRGAX has been stable across timeframes, ranging from 0.92 to 0.97 - a consistent structural relationship.

Return for Risk

CMNWX vs. MRGAX — Risk / Return Rank

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

CMNWX

CMNWX Risk / Return Rank: 49
CMNWX Sharpe Ratio Rank: 45
CMNWX Sortino Ratio Rank: 41
CMNWX Omega Ratio Rank: 42
CMNWX Calmar Ratio Rank: 53
CMNWX Martin Ratio Rank: 66

MRGAX

MRGAX Risk / Return Rank: 32
MRGAX Sharpe Ratio Rank: 31
MRGAX Sortino Ratio Rank: 29
MRGAX Omega Ratio Rank: 30
MRGAX Calmar Ratio Rank: 30
MRGAX Martin Ratio Rank: 39

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.

CMNWX vs. MRGAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Principal Capital Appreciation Fund (CMNWX) and MFS Core Equity Fund (MRGAX). 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.

	CMNWX	MRGAX	Difference
Sharpe ratio: Return per unit of total volatility	1.82	1.50	+0.33
Sortino ratio: Return per unit of downside risk	2.49	2.09	+0.39
Omega ratio: Gain probability vs. loss probability	1.32	1.27	+0.05
Calmar ratio: Return relative to maximum drawdown	2.66	1.95	+0.71
Martin ratio: Return relative to average drawdown	12.00	8.06	+3.94

CMNWX vs. MRGAX - Sharpe Ratio Comparison

The current CMNWX Sharpe Ratio is 1.82, which is comparable to the MRGAX Sharpe Ratio of 1.50. The chart below compares the historical Sharpe Ratios of CMNWX and MRGAX, 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

CMNWX vs. MRGAX - Drawdown Comparison

The maximum CMNWX drawdown since its inception was -50.43%, smaller than the maximum MRGAX drawdown of -54.04%. Use the drawdown chart below to compare losses from any high point for CMNWX and MRGAX.

Drawdown Indicators

	CMNWX	MRGAX	Difference
Max Drawdown Largest peak-to-trough decline	-50.43%	-54.04%	+3.61%
Max Drawdown (1Y) Largest decline over 1 year	-8.91%	-9.53%	+0.62%
Max Drawdown (3Y) Largest decline over 3 years	-19.54%	-19.22%	-0.32%
Max Drawdown (5Y) Largest decline over 5 years	-23.35%	-23.08%	-0.27%
Max Drawdown (10Y) Largest decline over 10 years	-33.26%	-33.41%	+0.15%
Current Drawdown Current decline from peak	-1.35%	-1.31%	-0.04%
Average Drawdown Average peak-to-trough decline	-6.94%	-8.26%	+1.32%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.97%	2.30%	-0.33%

Volatility

CMNWX vs. MRGAX - Volatility Comparison

Principal Capital Appreciation Fund (CMNWX) has a higher volatility of 4.91% compared to MFS Core Equity Fund (MRGAX) at 4.47%. This indicates that CMNWX's price experiences larger fluctuations and is considered to be riskier than MRGAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CMNWX	MRGAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.91%	4.47%	+0.44%
Volatility (6M) Calculated over the trailing 6-month period	10.28%	9.85%	+0.43%
Volatility (1Y) Calculated over the trailing 1-year period	13.00%	12.44%	+0.56%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.90%	16.86%	+0.04%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.23%	17.83%	-0.60%

CMNWX vs. MRGAX - Expense Ratio Comparison

CMNWX has a 0.80% expense ratio, which is lower than MRGAX's 0.93% expense ratio.

Dividends

CMNWX vs. MRGAX - Dividend Comparison

CMNWX's dividend yield for the trailing twelve months is around 8.00%, less than MRGAX's 12.72% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CMNWX Principal Capital Appreciation Fund	8.00%	8.75%	10.03%	0.71%	0.69%	9.52%	5.33%	8.37%	46.60%	7.72%	10.32%	5.42%
MRGAX MFS Core Equity Fund	12.72%	13.60%	8.21%	2.54%	3.83%	7.28%	1.54%	3.20%	11.09%	6.27%	3.65%	11.02%

Frequently Asked Questions

Can I hold both CMNWX and MRGAX in my portfolio?

With a correlation of 0.95, CMNWX and MRGAX 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.

Which is riskier, CMNWX or MRGAX?

CMNWX has higher volatility (4.91%) compared to MRGAX (4.47%). In terms of maximum drawdown, CMNWX dropped -50.43% vs MRGAX's -54.04%.

Which has better risk-adjusted returns?

CMNWX currently has the higher Sharpe Ratio (1.82 vs 1.50), 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.