RWIGX vs. AMCPX

Last updated Jun 25, 2026

RWIGX (Capital World Growth and Income Fund Class R-6) and AMCPX (American Funds AMCAP Fund Class A) are both mutual funds - RWIGX is a Global Equities fund tracking the MSCI All Country World Index (ACWI), while AMCPX is a Large Cap Growth Equities fund actively managed by American Funds. RWIGX is passively managed, while AMCPX is actively managed. Over the past 10 years, RWIGX returned 12.74%/yr vs 12.39%/yr for AMCPX. Their correlation of 0.90 suggests significant overlap in exposure. RWIGX charges 0.41%/yr vs 0.64%/yr for AMCPX.

Performance

RWIGX vs. AMCPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Capital World Growth and Income Fund Class R-6 (RWIGX) 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, RWIGX achieves a 13.61% return, which is significantly higher than AMCPX's 2.91% return. Both investments have delivered pretty close results over the past 10 years, with RWIGX having a 12.74% annualized return and AMCPX not far behind at 12.39%.

RWIGX

• 1D: -1.90%
• 1M: 0.85%
• YTD: 13.61%
• 6M: 13.00%
• 1Y: 28.23%
• 3Y*: 21.15%
• 5Y*: 11.08%
• 10Y*: 12.74%

AMCPX

• 1D: -1.24%
• 1M: -0.98%
• YTD: 2.91%
• 6M: 1.87%
• 1Y: 14.50%
• 3Y*: 18.05%
• 5Y*: 7.99%
• 10Y*: 12.39%

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

RWIGX vs. AMCPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RWIGX Capital World Growth and Income Fund Class R-6	13.61%	25.09%	14.21%	20.87%	-17.02%	15.11%	15.71%	25.94%	-10.32%	24.95%
AMCPX American Funds AMCAP Fund Class A	2.91%	17.68%	21.11%	31.04%	-28.67%	20.57%	21.42%	26.35%	-4.42%	22.08%

Correlation

The correlation between RWIGX and AMCPX is 0.90, 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	0.90
Correlation (3Y) Calculated over the trailing 3-year period	0.91
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Jan 4, 2010	0.90

The correlation between RWIGX and AMCPX has been stable across timeframes, ranging from 0.90 to 0.91 - a consistent structural relationship.

Return for Risk

RWIGX vs. AMCPX — Risk / Return Rank

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

RWIGX

RWIGX Risk / Return Rank: 63
RWIGX Sharpe Ratio Rank: 62
RWIGX Sortino Ratio Rank: 58
RWIGX Omega Ratio Rank: 60
RWIGX Calmar Ratio Rank: 65
RWIGX Martin Ratio Rank: 70

AMCPX

AMCPX Risk / Return Rank: 17
AMCPX Sharpe Ratio Rank: 17
AMCPX Sortino Ratio Rank: 17
AMCPX Omega Ratio Rank: 17
AMCPX Calmar Ratio Rank: 14
AMCPX Martin Ratio Rank: 20

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.

RWIGX vs. AMCPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Capital World Growth and Income Fund Class R-6 (RWIGX) 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.

	RWIGX	AMCPX	Difference
Sharpe ratio: Return per unit of total volatility	2.06	1.07	+0.99
Sortino ratio: Return per unit of downside risk	2.83	1.55	+1.27
Omega ratio: Gain probability vs. loss probability	1.38	1.20	+0.18
Calmar ratio: Return relative to maximum drawdown	2.87	1.17	+1.71
Martin ratio: Return relative to average drawdown	12.27	4.64	+7.63

RWIGX vs. AMCPX - Sharpe Ratio Comparison

The current RWIGX Sharpe Ratio is 2.06, which is higher than the AMCPX Sharpe Ratio of 1.07. The chart below compares the historical Sharpe Ratios of RWIGX 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

RWIGX vs. AMCPX - Drawdown Comparison

The maximum RWIGX drawdown since its inception was -31.98%, smaller than the maximum AMCPX drawdown of -62.37%. Use the drawdown chart below to compare losses from any high point for RWIGX and AMCPX.

Drawdown Indicators

	RWIGX	AMCPX	Difference
Max Drawdown Largest peak-to-trough decline	-31.98%	-62.37%	+30.39%
Max Drawdown (1Y) Largest decline over 1 year	-10.50%	-14.18%	+3.68%
Max Drawdown (3Y) Largest decline over 3 years	-15.54%	-19.71%	+4.17%
Max Drawdown (5Y) Largest decline over 5 years	-27.03%	-36.90%	+9.87%
Max Drawdown (10Y) Largest decline over 10 years	-31.98%	-36.90%	+4.92%
Current Drawdown Current decline from peak	-2.53%	-3.97%	+1.44%
Average Drawdown Average peak-to-trough decline	-5.13%	-9.57%	+4.44%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.45%	3.57%	-1.12%

Volatility

RWIGX vs. AMCPX - Volatility Comparison

Capital World Growth and Income Fund Class R-6 (RWIGX) and American Funds AMCAP Fund Class A (AMCPX) have volatilities of 6.34% and 6.06%, 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

	RWIGX	AMCPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.34%	6.06%	+0.28%
Volatility (6M) Calculated over the trailing 6-month period	12.34%	12.41%	-0.07%
Volatility (1Y) Calculated over the trailing 1-year period	14.66%	15.49%	-0.83%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.41%	19.39%	-3.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.03%	18.76%	-2.73%

RWIGX vs. AMCPX - Expense Ratio Comparison

RWIGX has a 0.41% expense ratio, which is lower than AMCPX's 0.64% expense ratio.

Dividends

RWIGX vs. AMCPX - Dividend Comparison

RWIGX's dividend yield for the trailing twelve months is around 9.65%, less than AMCPX's 12.94% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AMCPX American Funds AMCAP Fund Class A	12.94%	8.73%	8.19%	3.26%	7.54%	3.43%	3.88%	4.90%	7.84%	5.37%	3.81%	8.86%
RWIGX Capital World Growth and Income Fund Class R-6	9.65%	10.86%	8.23%	3.44%	2.45%	7.16%	1.53%	2.90%	7.37%	6.94%	5.60%	4.04%

Frequently Asked Questions

Can I hold both RWIGX and AMCPX in my portfolio?

With a correlation of 0.90, RWIGX and AMCPX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, RWIGX or AMCPX?

RWIGX has higher volatility (6.34%) compared to AMCPX (6.06%). In terms of maximum drawdown, RWIGX dropped -31.98% vs AMCPX's -62.37%.

Which has better risk-adjusted returns?

RWIGX currently has the higher Sharpe Ratio (2.06 vs 1.07), 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.