RGBFX vs. AMCPX

Last updated Jun 23, 2026

RGBFX (American Funds Global Balanced Fund Class R5) and AMCPX (American Funds AMCAP Fund Class A) are both mutual funds - RGBFX is a Global Allocation fund actively managed by American Funds, while AMCPX is a Large Cap Growth Equities fund actively managed by American Funds. Both are actively managed. Over the past 10 years, RGBFX returned 7.24%/yr vs 12.36%/yr for AMCPX. Their correlation of 0.86 suggests significant overlap in exposure. RGBFX charges 0.53%/yr vs 0.64%/yr for AMCPX.

Performance

RGBFX vs. AMCPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Global Balanced Fund Class R5 (RGBFX) 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, RGBFX achieves a 6.00% return, which is significantly higher than AMCPX's 5.53% return. Over the past 10 years, RGBFX has underperformed AMCPX with an annualized return of 7.24%, while AMCPX has yielded a comparatively higher 12.36% annualized return.

RGBFX

• 1D: 0.40%
• 1M: 0.28%
• YTD: 6.00%
• 6M: 6.47%
• 1Y: 16.37%
• 3Y*: 12.01%
• 5Y*: 6.33%
• 10Y*: 7.24%

AMCPX

• 1D: 1.49%
• 1M: 1.54%
• YTD: 5.53%
• 6M: 5.33%
• 1Y: 20.65%
• 3Y*: 18.68%
• 5Y*: 9.06%
• 10Y*: 12.36%

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

RGBFX vs. AMCPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RGBFX American Funds Global Balanced Fund Class R5	6.00%	17.44%	6.86%	14.06%	-14.01%	9.50%	10.80%	17.55%	-5.86%	14.33%
AMCPX American Funds AMCAP Fund Class A	5.53%	17.68%	21.11%	31.04%	-28.67%	20.57%	21.42%	26.35%	-4.42%	22.08%

Correlation

The correlation between RGBFX and AMCPX is 0.85, 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	0.85
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.85
Correlation (10Y) Calculated over the trailing 10-year period	0.85
Correlation (All Time) Calculated using the full available price history since Jan 3, 2012	0.86

The correlation between RGBFX and AMCPX has been stable across timeframes, ranging from 0.85 to 0.86 - a consistent structural relationship.

Return for Risk

RGBFX vs. AMCPX — Risk / Return Rank

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

RGBFX

RGBFX Risk / Return Rank: 48
RGBFX Sharpe Ratio Rank: 47
RGBFX Sortino Ratio Rank: 47
RGBFX Omega Ratio Rank: 50
RGBFX Calmar Ratio Rank: 43
RGBFX Martin Ratio Rank: 54

AMCPX

AMCPX Risk / Return Rank: 23
AMCPX Sharpe Ratio Rank: 24
AMCPX Sortino Ratio Rank: 23
AMCPX Omega Ratio Rank: 25
AMCPX Calmar Ratio Rank: 18
AMCPX Martin Ratio Rank: 25

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.

RGBFX vs. AMCPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Global Balanced Fund Class R5 (RGBFX) 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.

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.

	RGBFX	AMCPX	Difference
Sharpe ratio: Return per unit of total volatility	1.87	1.32	+0.55
Sortino ratio: Return per unit of downside risk	2.66	1.87	+0.78
Omega ratio: Gain probability vs. loss probability	1.36	1.24	+0.11
Calmar ratio: Return relative to maximum drawdown	2.39	1.43	+0.96
Martin ratio: Return relative to average drawdown	10.25	5.70	+4.55

RGBFX vs. AMCPX - Sharpe Ratio Comparison

The current RGBFX Sharpe Ratio is 1.87, which is higher than the AMCPX Sharpe Ratio of 1.32. The chart below compares the historical Sharpe Ratios of RGBFX 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.

Drawdowns

RGBFX vs. AMCPX - Drawdown Comparison

The maximum RGBFX drawdown since its inception was -23.31%, smaller than the maximum AMCPX drawdown of -62.37%. Use the drawdown chart below to compare losses from any high point for RGBFX and AMCPX.

Drawdown Indicators

	RGBFX	AMCPX	Difference
Max Drawdown Largest peak-to-trough decline	-23.31%	-62.37%	+39.06%
Max Drawdown (1Y) Largest decline over 1 year	-6.73%	-14.18%	+7.45%
Max Drawdown (3Y) Largest decline over 3 years	-8.76%	-19.71%	+10.95%
Max Drawdown (5Y) Largest decline over 5 years	-22.33%	-36.90%	+14.57%
Max Drawdown (10Y) Largest decline over 10 years	-23.31%	-36.90%	+13.59%
Current Drawdown Current decline from peak	-1.03%	-1.53%	+0.50%
Average Drawdown Average peak-to-trough decline	-3.39%	-9.57%	+6.18%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.57%	3.55%	-1.98%

Volatility

RGBFX vs. AMCPX - Volatility Comparison

The current volatility for American Funds Global Balanced Fund Class R5 (RGBFX) is 3.22%, while American Funds AMCAP Fund Class A (AMCPX) has a volatility of 5.90%. This indicates that RGBFX experiences smaller price fluctuations and is considered to be less risky than AMCPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RGBFX	AMCPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.22%	5.90%	-2.68%
Volatility (6M) Calculated over the trailing 6-month period	7.28%	12.43%	-5.15%
Volatility (1Y) Calculated over the trailing 1-year period	8.62%	15.38%	-6.76%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	9.98%	19.37%	-9.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.48%	18.78%	-8.30%

RGBFX vs. AMCPX - Expense Ratio Comparison

RGBFX has a 0.53% expense ratio, which is lower than AMCPX's 0.64% expense ratio.

Dividends

RGBFX vs. AMCPX - Dividend Comparison

RGBFX's dividend yield for the trailing twelve months is around 6.11%, less than AMCPX's 12.62% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AMCPX American Funds AMCAP Fund Class A	12.62%	8.73%	8.19%	3.26%	7.54%	3.43%	3.88%	4.90%	7.84%	5.37%	3.81%	8.86%
RGBFX American Funds Global Balanced Fund Class R5	6.11%	6.59%	5.82%	1.88%	1.82%	6.32%	1.50%	2.13%	2.59%	3.42%	2.26%	3.54%

Frequently Asked Questions

Can I hold both RGBFX and AMCPX in my portfolio?

RGBFX and AMCPX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RGBFX or AMCPX?

AMCPX has higher volatility (5.90%) compared to RGBFX (3.22%). In terms of maximum drawdown, RGBFX dropped -23.31% vs AMCPX's -62.37%.

Which has better risk-adjusted returns?

RGBFX currently has the higher Sharpe Ratio (1.87 vs 1.32), 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.