ANFFX vs. MRFOX

Last updated Jul 15, 2026

ANFFX (American Funds The New Economy Fund Class F-1) and MRFOX (Marshfield Concentrated Opportunity Fund) are both Large Cap Growth Equities funds. Over the past 10 years, ANFFX returned 15.69%/yr vs 16.06%/yr for MRFOX. A 0.64 correlation means they provide meaningful diversification when combined. ANFFX charges 0.78%/yr vs 1.05%/yr for MRFOX.

Performance

ANFFX vs. MRFOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds The New Economy Fund Class F-1 (ANFFX) and Marshfield Concentrated Opportunity Fund (MRFOX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ANFFX achieves a 17.01% return, which is significantly higher than MRFOX's 5.16% return. Both investments have delivered pretty close results over the past 10 years, with ANFFX having a 15.69% annualized return and MRFOX not far ahead at 16.06%.

ANFFX

• 1D: -2.50%
• 1M: -0.64%
• 6M: 12.66%
• YTD: 17.01%
• 1Y: 37.68%
• 3Y*: 26.61%
• 5Y*: 12.22%
• 10Y*: 15.69%

MRFOX

• 1D: 0.87%
• 1M: 3.15%
• 6M: 3.77%
• YTD: 5.16%
• 1Y: 11.98%
• 3Y*: 13.83%
• 5Y*: 11.71%
• 10Y*: 16.06%

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

ANFFX vs. MRFOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ANFFX American Funds The New Economy Fund Class F-1	17.01%	30.96%	23.52%	29.10%	-29.69%	11.98%	33.43%	26.38%	-4.41%	34.27%
MRFOX Marshfield Concentrated Opportunity Fund	5.16%	10.05%	17.10%	17.68%	5.06%	17.71%	15.19%	36.26%	1.89%	25.92%

Correlation

The correlation between ANFFX and MRFOX is 0.09, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.09
Correlation (3Y) Calculated over the trailing 3-year period	0.39
Correlation (5Y) Calculated over the trailing 5-year period	0.56
Correlation (10Y) Calculated over the trailing 10-year period	0.63
Correlation (All Time) Calculated using the full available price history since Jan 4, 2016	0.64

Over the past year, the correlation between ANFFX and MRFOX has dropped to 0.09 - well below their long-term average of 0.64, suggesting their price drivers have been diverging.

Return for Risk

ANFFX vs. MRFOX — Risk / Return Rank

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

ANFFX

ANFFX Risk / Return Rank: 75
ANFFX Sharpe Ratio Rank: 76
ANFFX Sortino Ratio Rank: 66
ANFFX Omega Ratio Rank: 69
ANFFX Calmar Ratio Rank: 79
ANFFX Martin Ratio Rank: 84

MRFOX

MRFOX Risk / Return Rank: 34
MRFOX Sharpe Ratio Rank: 34
MRFOX Sortino Ratio Rank: 37
MRFOX Omega Ratio Rank: 32
MRFOX Calmar Ratio Rank: 37
MRFOX Martin Ratio Rank: 31

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.

ANFFX vs. MRFOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds The New Economy Fund Class F-1 (ANFFX) and Marshfield Concentrated Opportunity Fund (MRFOX). 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.

	ANFFX	MRFOX	Difference
Sharpe ratio: Return per unit of total volatility	1.95	1.28	+0.67
Sortino ratio: Return per unit of downside risk	2.53	1.93	+0.59
Omega ratio: Gain probability vs. loss probability	1.34	1.23	+0.11
Calmar ratio: Return relative to maximum drawdown	2.85	1.82	+1.03
Martin ratio: Return relative to average drawdown	11.97	5.37	+6.60

ANFFX vs. MRFOX - Sharpe Ratio Comparison

The current ANFFX Sharpe Ratio is 1.95, which is higher than the MRFOX Sharpe Ratio of 1.28. The chart below compares the historical Sharpe Ratios of ANFFX and MRFOX, 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

ANFFX vs. MRFOX - Drawdown Comparison

The maximum ANFFX drawdown since its inception was -55.37%, which is greater than MRFOX's maximum drawdown of -29.10%. Use the drawdown chart below to compare losses from any high point for ANFFX and MRFOX.

Drawdown Indicators

	ANFFX	MRFOX	Difference
Max Drawdown Largest peak-to-trough decline	-55.37%	-29.10%	-26.27%
Max Drawdown (1Y) Largest decline over 1 year	-13.36%	-7.03%	-6.33%
Max Drawdown (3Y) Largest decline over 3 years	-20.81%	-7.91%	-12.90%
Max Drawdown (5Y) Largest decline over 5 years	-37.10%	-12.98%	-24.12%
Max Drawdown (10Y) Largest decline over 10 years	-37.10%	-29.10%	-8.00%
Current Drawdown Current decline from peak	-5.60%	-0.22%	-5.38%
Average Drawdown Average peak-to-trough decline	-11.33%	-2.35%	-8.98%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.17%	2.38%	+0.79%

Volatility

ANFFX vs. MRFOX - Volatility Comparison

American Funds The New Economy Fund Class F-1 (ANFFX) has a higher volatility of 8.43% compared to Marshfield Concentrated Opportunity Fund (MRFOX) at 3.48%. This indicates that ANFFX's price experiences larger fluctuations and is considered to be riskier than MRFOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ANFFX	MRFOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.43%	3.48%	+4.95%
Volatility (6M) Calculated over the trailing 6-month period	16.33%	7.44%	+8.89%
Volatility (1Y) Calculated over the trailing 1-year period	19.58%	10.05%	+9.53%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.86%	12.12%	+7.74%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.22%	14.15%	+5.07%

ANFFX vs. MRFOX - Expense Ratio Comparison

ANFFX has a 0.78% expense ratio, which is lower than MRFOX's 1.05% expense ratio.

Dividends

ANFFX vs. MRFOX - Dividend Comparison

ANFFX's dividend yield for the trailing twelve months is around 8.46%, more than MRFOX's 1.54% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ANFFX American Funds The New Economy Fund Class F-1	8.46%	9.90%	9.56%	3.89%	0.00%	7.53%	2.45%	7.26%	9.84%	8.19%	2.13%	6.07%
MRFOX Marshfield Concentrated Opportunity Fund	1.54%	1.62%	4.59%	0.46%	0.35%	6.78%	2.68%	1.39%	1.94%	2.06%	0.60%	0.00%

Frequently Asked Questions

Can I hold both ANFFX and MRFOX in my portfolio?

ANFFX and MRFOX have a correlation of 0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ANFFX or MRFOX?

ANFFX has higher volatility (8.43%) compared to MRFOX (3.48%). In terms of maximum drawdown, ANFFX dropped -55.37% vs MRFOX's -29.10%.

Which has better risk-adjusted returns?

ANFFX currently has the higher Sharpe Ratio (1.95 vs 1.28), 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.