AMPCX vs. RGAGX

Last updated Apr 1, 2026

Compare and contrast key facts about American Funds AMCAP Fund Class C (AMPCX) and American Funds The Growth Fund of America Class R-6 (RGAGX).

AMPCX is managed by American Funds. It was launched on May 1, 1967. RGAGX is managed by American Funds. It was launched on Dec 1, 1973.

Performance

AMPCX vs. RGAGX - Performance Comparison

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

AMPCX vs. RGAGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AMPCX American Funds AMCAP Fund Class C	-11.98%	16.78%	20.17%	30.08%	-29.17%	22.77%	20.52%	25.37%	-5.50%	21.11%
RGAGX American Funds The Growth Fund of America Class R-6	-11.15%	20.08%	28.41%	37.66%	-30.53%	19.67%	38.30%	29.22%	-2.88%	26.53%

Returns By Period

In the year-to-date period, AMPCX achieves a -11.98% return, which is significantly lower than RGAGX's -11.15% return. Over the past 10 years, AMPCX has underperformed RGAGX with an annualized return of 10.00%, while RGAGX has yielded a comparatively higher 14.34% annualized return.

AMPCX

• 1D: -0.38%
• 1M: -10.18%
• YTD: -11.98%
• 6M: -9.70%
• 1Y: 10.20%
• 3Y*: 13.51%
• 5Y*: 5.97%
• 10Y*: 10.00%

RGAGX

• 1D: -0.47%
• 1M: -9.63%
• YTD: -11.15%
• 6M: -9.74%
• 1Y: 13.94%
• 3Y*: 19.23%
• 5Y*: 8.87%
• 10Y*: 14.34%

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

AMPCX vs. RGAGX - Expense Ratio Comparison

AMPCX has a 1.40% expense ratio, which is higher than RGAGX's 0.30% expense ratio.

AMPCX

American Funds AMCAP Fund Class C

RGAGX

American Funds The Growth Fund of America Class R-6

Return for Risk

AMPCX vs. RGAGX — Risk / Return Rank

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

AMPCX

AMPCX Risk / Return Rank: 21
AMPCX Sharpe Ratio Rank: 21
AMPCX Sortino Ratio Rank: 22
AMPCX Omega Ratio Rank: 22
AMPCX Calmar Ratio Rank: 18
AMPCX Martin Ratio Rank: 21

RGAGX

RGAGX Risk / Return Rank: 30
RGAGX Sharpe Ratio Rank: 29
RGAGX Sortino Ratio Rank: 33
RGAGX Omega Ratio Rank: 32
RGAGX Calmar Ratio Rank: 28
RGAGX Martin Ratio Rank: 28

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.

AMPCX vs. RGAGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds AMCAP Fund Class C (AMPCX) and American Funds The Growth Fund of America Class R-6 (RGAGX). 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.

	AMPCX	RGAGX	Difference
Sharpe ratio Return per unit of total volatility	0.52	0.66	-0.15
Sortino ratio Return per unit of downside risk	0.88	1.09	-0.21
Omega ratio Gain probability vs. loss probability	1.12	1.16	-0.03
Calmar ratio Return relative to maximum drawdown	0.53	0.79	-0.26
Martin ratio Return relative to average drawdown	2.15	3.04	-0.89
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AMPCX vs. RGAGX - Sharpe Ratio Comparison

The current AMPCX Sharpe Ratio is 0.52, which is comparable to the RGAGX Sharpe Ratio of 0.66. The chart below compares the historical Sharpe Ratios of AMPCX and RGAGX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	AMPCX	RGAGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.52	0.66	-0.15
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.31	0.44	-0.13
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.54	0.73	-0.20
Sharpe Ratio (All Time) Calculated using the full available price history	0.40	0.79	-0.39

Correlation

The correlation between AMPCX and RGAGX is 0.98, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

AMPCX vs. RGAGX - Dividend Comparison

AMPCX's dividend yield for the trailing twelve months is around 12.90%, more than RGAGX's 12.37% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AMPCX American Funds AMCAP Fund Class C	12.90%	11.35%	9.83%	3.32%	9.21%	7.09%	4.32%	5.06%	8.25%	5.61%	3.77%	9.83%
RGAGX American Funds The Growth Fund of America Class R-6	12.37%	10.99%	9.29%	7.70%	4.44%	8.49%	4.57%	7.93%	12.36%	7.34%	6.95%	9.22%

Drawdowns

AMPCX vs. RGAGX - Drawdown Comparison

The maximum AMPCX drawdown since its inception was -53.38%, which is greater than RGAGX's maximum drawdown of -36.19%. Use the drawdown chart below to compare losses from any high point for AMPCX and RGAGX.

Drawdown Indicators

	AMPCX	RGAGX	Difference
Max Drawdown Largest peak-to-trough decline	-53.38%	-36.19%	-17.19%
Max Drawdown (1Y) Largest decline over 1 year	-14.33%	-13.71%	-0.62%
Max Drawdown (5Y) Largest decline over 5 years	-35.67%	-36.19%	+0.52%
Max Drawdown (10Y) Largest decline over 10 years	-35.67%	-36.19%	+0.52%
Current Drawdown Current decline from peak	-14.33%	-13.71%	-0.62%
Average Drawdown Average peak-to-trough decline	-9.27%	-5.53%	-3.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.51%	3.55%	-0.04%

Volatility

AMPCX vs. RGAGX - Volatility Comparison

American Funds AMCAP Fund Class C (AMPCX) and American Funds The Growth Fund of America Class R-6 (RGAGX) have volatilities of 5.25% and 5.45%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AMPCX	RGAGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.25%	5.45%	-0.20%
Volatility (6M) Calculated over the trailing 6-month period	11.05%	11.60%	-0.55%
Volatility (1Y) Calculated over the trailing 1-year period	19.62%	20.75%	-1.13%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.13%	20.17%	-1.04%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.65%	19.61%	-0.96%