RERGX vs. AMCPX

Last updated Jun 5, 2026

RERGX (American Funds EuroPacific Growth Fund Class R-6) and AMCPX (American Funds AMCAP Fund Class A) are both mutual funds - RERGX is a Foreign Large Cap Equities fund managed by American Funds, while AMCPX is a Large Cap Growth Equities fund managed by American Funds. Over the past 10 years, RERGX returned 9.12%/yr vs 12.27%/yr for AMCPX. A 0.80 correlation means they provide meaningful diversification when combined. RERGX charges 0.46%/yr vs 0.65%/yr for AMCPX.

Performance

RERGX vs. AMCPX - Performance Comparison

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

Returns By Period

In the year-to-date period, RERGX achieves a 11.44% return, which is significantly higher than AMCPX's 5.43% return. Over the past 10 years, RERGX has underperformed AMCPX with an annualized return of 9.12%, while AMCPX has yielded a comparatively higher 12.27% annualized return.

RERGX

• 1D: -0.79%
• 1M: 5.62%
• YTD: 11.44%
• 6M: 13.85%
• 1Y: 27.52%
• 3Y*: 16.05%
• 5Y*: 5.07%
• 10Y*: 9.12%

AMCPX

• 1D: -0.86%
• 1M: 2.32%
• YTD: 5.43%
• 6M: 5.10%
• 1Y: 20.27%
• 3Y*: 19.48%
• 5Y*: 8.99%
• 10Y*: 12.27%

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

RERGX vs. AMCPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RERGX American Funds EuroPacific Growth Fund Class R-6	11.44%	29.34%	3.00%	16.11%	-22.77%	2.84%	25.27%	27.40%	-17.33%	31.19%
AMCPX American Funds AMCAP Fund Class A	5.43%	17.68%	21.11%	31.04%	-28.67%	20.57%	21.42%	26.35%	-4.42%	22.08%

Correlation

The correlation between RERGX and AMCPX is 0.78, 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	0.78
Correlation (3Y) Calculated over the trailing 3-year period	0.77
Correlation (5Y) Calculated over the trailing 5-year period	0.80
Correlation (10Y) Calculated over the trailing 10-year period	0.79
Correlation (All Time) Calculated using the full available price history since Jan 5, 2010	0.80

The correlation between RERGX and AMCPX has been stable across timeframes, ranging from 0.77 to 0.80 - a consistent structural relationship.

Return for Risk

RERGX vs. AMCPX — Risk / Return Rank

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

RERGX

RERGX Risk / Return Rank: 39
RERGX Sharpe Ratio Rank: 40
RERGX Sortino Ratio Rank: 40
RERGX Omega Ratio Rank: 40
RERGX Calmar Ratio Rank: 36
RERGX Martin Ratio Rank: 40

AMCPX

AMCPX Risk / Return Rank: 23
AMCPX Sharpe Ratio Rank: 25
AMCPX Sortino Ratio Rank: 23
AMCPX Omega Ratio Rank: 24
AMCPX Calmar Ratio Rank: 17
AMCPX Martin Ratio Rank: 24

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.

RERGX vs. AMCPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds EuroPacific Growth Fund Class R-6 (RERGX) and American Funds AMCAP Fund Class A (AMCPX). 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.

	RERGX	AMCPX	Difference
Sharpe ratio: Return per unit of total volatility	1.85	1.43	+0.42
Sortino ratio: Return per unit of downside risk	2.64	2.03	+0.62
Omega ratio: Gain probability vs. loss probability	1.34	1.26	+0.08
Calmar ratio: Return relative to maximum drawdown	2.28	1.47	+0.80
Martin ratio: Return relative to average drawdown	8.58	5.98	+2.60
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RERGX vs. AMCPX - Sharpe Ratio Comparison

The current RERGX Sharpe Ratio is 1.85, which is comparable to the AMCPX Sharpe Ratio of 1.43. The chart below compares the historical Sharpe Ratios of RERGX and AMCPX, 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

	RERGX	AMCPX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.85	1.43	+0.42
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.31	0.47	-0.16
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.54	0.66	-0.12
Sharpe Ratio (All Time) Calculated using the full available price history	0.42	0.59	-0.17

Drawdowns

RERGX vs. AMCPX - Drawdown Comparison

The maximum RERGX drawdown since its inception was -37.30%, smaller than the maximum AMCPX drawdown of -62.37%. Use the drawdown chart below to compare losses from any high point for RERGX and AMCPX.

Drawdown Indicators

	RERGX	AMCPX	Difference
Max Drawdown Largest peak-to-trough decline	-37.30%	-62.37%	+25.07%
Max Drawdown (1Y) Largest decline over 1 year	-12.52%	-14.18%	+1.66%
Max Drawdown (3Y) Largest decline over 3 years	-15.62%	-19.71%	+4.09%
Max Drawdown (5Y) Largest decline over 5 years	-37.30%	-36.90%	-0.40%
Max Drawdown (10Y) Largest decline over 10 years	-37.30%	-36.90%	-0.40%
Current Drawdown Current decline from peak	-0.79%	-1.62%	+0.83%
Average Drawdown Average peak-to-trough decline	-9.21%	-9.58%	+0.37%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.31%	3.49%	-0.18%

Volatility

RERGX vs. AMCPX - Volatility Comparison

American Funds EuroPacific Growth Fund Class R-6 (RERGX) has a higher volatility of 5.52% compared to American Funds AMCAP Fund Class A (AMCPX) at 3.70%. This indicates that RERGX's price experiences larger fluctuations and is considered to be riskier than AMCPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RERGX	AMCPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.52%	3.70%	+1.82%
Volatility (6M) Calculated over the trailing 6-month period	12.93%	11.42%	+1.51%
Volatility (1Y) Calculated over the trailing 1-year period	15.39%	14.59%	+0.80%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.67%	19.24%	-2.57%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.93%	18.72%	-1.79%

RERGX vs. AMCPX - Expense Ratio Comparison

RERGX has a 0.46% expense ratio, which is lower than AMCPX's 0.65% expense ratio.

Dividends

RERGX vs. AMCPX - Dividend Comparison

RERGX's dividend yield for the trailing twelve months is around 12.52%, more than AMCPX's 8.28% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AMCPX American Funds AMCAP Fund Class A	8.28%	8.73%	8.19%	3.26%	7.54%	3.43%	3.88%	4.90%	7.84%	5.37%	3.81%	8.86%
RERGX American Funds EuroPacific Growth Fund Class R-6	12.52%	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 AMCPX in my portfolio?

RERGX and AMCPX have a correlation of 0.78, 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 AMCPX?

RERGX has higher volatility (5.52%) compared to AMCPX (3.70%). In terms of maximum drawdown, RERGX dropped -37.30% vs AMCPX's -62.37%.

Which has better risk-adjusted returns?

RERGX currently has the higher Sharpe Ratio (1.85 vs 1.43), 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.