RERGX vs. ANCFX

Last updated Aug 4, 2026

RERGX (American Funds EUPAC Fund Class R-6) and ANCFX (American Funds Fundamental Investors Class A) are both mutual funds - RERGX is a Foreign Large Cap Equities fund actively managed by American Funds, while ANCFX is a Large Cap Blend Equities fund actively managed by American Funds. Both are actively managed. Over the past 10 years, RERGX returned 8.82%/yr vs 14.48%/yr for ANCFX. Their correlation of 0.84 means they have usually moved in the same direction. RERGX charges 0.47%/yr vs 0.57%/yr for ANCFX.

Performance

RERGX vs. ANCFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds EUPAC Fund Class R-6 (RERGX) and American Funds Fundamental Investors Class A (ANCFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RERGX achieves a 10.30% return, which is significantly lower than ANCFX's 13.21% return. Over the past 10 years, RERGX has underperformed ANCFX with an annualized return of 8.82%, while ANCFX has yielded a comparatively higher 14.48% annualized return.

RERGX

• 1D: 0.65%
• 1M: -0.13%
• 6M: 4.27%
• YTD: 10.30%
• 1Y: 25.47%
• 3Y*: 14.15%
• 5Y*: 5.25%
• 10Y*: 8.82%
• ALL TIME*: 7.04%

ANCFX

• 1D: 0.96%
• 1M: -0.03%
• 6M: 8.61%
• YTD: 13.21%
• 1Y: 25.85%
• 3Y*: 22.42%
• 5Y*: 13.95%
• 10Y*: 14.48%
• ALL TIME*: 11.23%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ANCFX American Funds Fundamental Investors Class A	$0.00	$0.00	$0.00
RERGX American Funds EUPAC Fund Class R-6	$0.00	$0.00	$0.00

RERGX vs. ANCFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RERGX American Funds EUPAC Fund Class R-6	10.30%	29.34%	3.00%	16.11%	-22.77%	2.84%	25.27%	27.40%	-17.33%	31.19%
ANCFX American Funds Fundamental Investors Class A	13.21%	24.21%	22.73%	25.86%	-16.66%	22.43%	14.92%	27.07%	-8.13%	22.80%

Correlation

The correlation between RERGX and ANCFX is 0.86, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.86
Correlation (3Y) Balances recent behavior with more history.	0.82
Correlation (5Y) Shows whether the relationship held over a longer period.	0.84
Correlation (10Y) Provides a long-term view across more market conditions.	0.83
Correlation (All Time) Calculated using the full available price history since Jan 4, 2010	0.84

The correlation between RERGX and ANCFX has been stable across timeframes, ranging from 0.82 to 0.86 - a consistent structural relationship.

Return for Risk

RERGX vs. ANCFX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

RERGX

RERGX Risk / Return Rank: 48
RERGX Sharpe Ratio Rank: 48
RERGX Sortino Ratio Rank: 47
RERGX Omega Ratio Rank: 49
RERGX Calmar Ratio Rank: 48
RERGX Martin Ratio Rank: 46

ANCFX

ANCFX Risk / Return Rank: 61
ANCFX Sharpe Ratio Rank: 59
ANCFX Sortino Ratio Rank: 55
ANCFX Omega Ratio Rank: 54
ANCFX Calmar Ratio Rank: 62
ANCFX Martin Ratio Rank: 75

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

RERGX vs. ANCFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds EUPAC Fund Class R-6 (RERGX) and American Funds Fundamental Investors Class A (ANCFX). 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.

	RERGX	ANCFX	Difference
Sharpe ratio: Return per unit of total volatility	1.42	1.56	-0.14
Sortino ratio: Return per unit of downside risk	2.03	2.18	-0.15
Omega ratio: Gain probability vs. loss probability	1.26	1.28	-0.01
Calmar ratio: Return relative to maximum drawdown	1.97	2.23	-0.26
Martin ratio: Return relative to average drawdown	6.96	9.61	-2.65

RERGX vs. ANCFX - Sharpe Ratio Comparison

The current RERGX Sharpe Ratio is 1.42, which is comparable to the ANCFX Sharpe Ratio of 1.56. The chart below compares the historical Sharpe Ratios of RERGX and ANCFX, 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

RERGX vs. ANCFX - Drawdown Comparison

The maximum RERGX drawdown since its inception was -37.30%, smaller than the maximum ANCFX drawdown of -53.29%. Use the drawdown chart below to compare losses from any high point for RERGX and ANCFX.

Drawdown Indicators

	RERGX	ANCFX	Difference
Max Drawdown Largest peak-to-trough decline	-37.30%	-53.29%	+15.99%
Max Drawdown (1Y) Largest decline over 1 year	-12.52%	-10.66%	-1.86%
Max Drawdown (3Y) Largest decline over 3 years	-15.62%	-17.97%	+2.35%
Max Drawdown (5Y) Largest decline over 5 years	-37.30%	-25.07%	-12.23%
Max Drawdown (10Y) Largest decline over 10 years	-37.30%	-33.93%	-3.37%
Current Drawdown Current decline from peak	-2.88%	-1.67%	-1.21%
Average Drawdown Average peak-to-trough decline	-9.15%	-7.30%	-1.85%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.53%	2.47%	+1.06%

Volatility

RERGX vs. ANCFX - Volatility Comparison

American Funds EUPAC Fund Class R-6 (RERGX) has a higher volatility of 5.67% compared to American Funds Fundamental Investors Class A (ANCFX) at 4.30%. This indicates that RERGX's price experiences larger fluctuations and is considered to be riskier than ANCFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RERGX	ANCFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.67%	4.30%	+1.37%
Volatility (6M) Calculated over the trailing 6-month period	15.25%	12.16%	+3.09%
Volatility (1Y) Calculated over the trailing 1-year period	17.35%	15.18%	+2.17%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.00%	17.00%	0.00%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.88%	17.76%	-0.88%

RERGX vs. ANCFX - Expense Ratio Comparison

RERGX has a 0.47% expense ratio, which is lower than ANCFX's 0.57% expense ratio.

Dividends

RERGX vs. ANCFX - Dividend Comparison

RERGX's dividend yield for the trailing twelve months is around 16.65%, more than ANCFX's 7.36% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ANCFX American Funds Fundamental Investors Class A	7.36%	8.54%	8.90%	5.80%	4.98%	10.97%	2.61%	6.91%	9.31%	7.28%	4.71%	6.08%
RERGX American Funds EUPAC Fund Class R-6	16.65%	13.95%	4.96%	3.95%	2.02%	10.19%	0.41%	3.14%	3.17%	4.99%	1.64%	3.43%

Frequently Asked Questions

Can I hold both RERGX and ANCFX in my portfolio?

RERGX and ANCFX have a correlation of 0.86, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RERGX or ANCFX?

RERGX has higher volatility (5.67%) compared to ANCFX (4.30%). In terms of maximum drawdown, RERGX dropped -37.30% vs ANCFX's -53.29%.

Which has better risk-adjusted returns?

ANCFX currently has the higher Sharpe Ratio (1.56 vs 1.42), 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.