CGHM vs. AHMFX

Last updated Jun 4, 2026

CGHM (Capital Group Municipal High-Income ETF) and AHMFX (American High-Income Municipal Bond Fund Class F-2) are both High Yield Muni funds from Capital Group. Both are actively managed. Over the past year, CGHM returned 9.42% vs 8.64% for AHMFX. A 0.75 correlation means they provide meaningful diversification when combined. CGHM charges 0.34%/yr vs 0.42%/yr for AHMFX.

Performance

CGHM vs. AHMFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Capital Group Municipal High-Income ETF (CGHM) and American High-Income Municipal Bond Fund Class F-2 (AHMFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CGHM achieves a 2.65% return, which is significantly higher than AHMFX's 2.33% return.

CGHM

• 1D: 0.00%
• 1M: 1.11%
• YTD: 2.65%
• 6M: 3.10%
• 1Y: 9.42%
• 3Y*: —
• 5Y*: —
• 10Y*: —

AHMFX

• 1D: 0.19%
• 1M: 0.99%
• YTD: 2.33%
• 6M: 2.83%
• 1Y: 8.64%
• 3Y*: 6.40%
• 5Y*: 1.91%
• 10Y*: 3.48%

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

CGHM vs. AHMFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024
CGHM Capital Group Municipal High-Income ETF	2.65%	4.56%	2.71%
AHMFX American High-Income Municipal Bond Fund Class F-2	2.33%	6.03%	3.00%

Correlation

The correlation between CGHM and AHMFX is 0.73, 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	0.73
Correlation (All Time) Calculated using the full available price history since Jun 28, 2024	0.75

The correlation between CGHM and AHMFX has been stable across timeframes, ranging from 0.73 to 0.75 - a consistent structural relationship.

Return for Risk

CGHM vs. AHMFX — Risk / Return Rank

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

CGHM

CGHM Risk / Return Rank: 85
CGHM Sharpe Ratio Rank: 89
CGHM Sortino Ratio Rank: 92
CGHM Omega Ratio Rank: 94
CGHM Calmar Ratio Rank: 75
CGHM Martin Ratio Rank: 76

AHMFX

AHMFX Risk / Return Rank: 78
AHMFX Sharpe Ratio Rank: 86
AHMFX Sortino Ratio Rank: 92
AHMFX Omega Ratio Rank: 92
AHMFX Calmar Ratio Rank: 65
AHMFX Martin Ratio Rank: 55

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.

CGHM vs. AHMFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Capital Group Municipal High-Income ETF (CGHM) and American High-Income Municipal Bond Fund Class F-2 (AHMFX). 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.

	CGHM	AHMFX	Difference
Sharpe ratio: Return per unit of total volatility	3.03	2.82	+0.21
Sortino ratio: Return per unit of downside risk	4.44	4.63	-0.18
Omega ratio: Gain probability vs. loss probability	1.68	1.69	0.00
Calmar ratio: Return relative to maximum drawdown	3.71	3.12	+0.60
Martin ratio: Return relative to average drawdown	14.39	11.16	+3.23
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CGHM vs. AHMFX - Sharpe Ratio Comparison

The current CGHM Sharpe Ratio is 3.03, which is comparable to the AHMFX Sharpe Ratio of 2.82. The chart below compares the historical Sharpe Ratios of CGHM and AHMFX, 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

	CGHM	AHMFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.03	2.82	+0.21
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.39	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.77	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.15	1.54	-0.39

Drawdowns

CGHM vs. AHMFX - Drawdown Comparison

The maximum CGHM drawdown since its inception was -5.90%, smaller than the maximum AHMFX drawdown of -17.65%. Use the drawdown chart below to compare losses from any high point for CGHM and AHMFX.

Drawdown Indicators

	CGHM	AHMFX	Difference
Max Drawdown Largest peak-to-trough decline	-5.90%	-17.65%	+11.75%
Max Drawdown (1Y) Largest decline over 1 year	-2.55%	-2.76%	+0.21%
Max Drawdown (3Y) Largest decline over 3 years	—	-6.20%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-17.65%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-17.65%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-1.25%	-2.37%	+1.12%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.66%	0.77%	-0.11%

Volatility

CGHM vs. AHMFX - Volatility Comparison

The current volatility for Capital Group Municipal High-Income ETF (CGHM) is 1.03%, while American High-Income Municipal Bond Fund Class F-2 (AHMFX) has a volatility of 1.11%. This indicates that CGHM experiences smaller price fluctuations and is considered to be less risky than AHMFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CGHM	AHMFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.03%	1.11%	-0.08%
Volatility (6M) Calculated over the trailing 6-month period	2.21%	2.22%	-0.01%
Volatility (1Y) Calculated over the trailing 1-year period	3.12%	3.06%	+0.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.53%	4.86%	-0.33%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.53%	4.55%	-0.02%

CGHM vs. AHMFX - Expense Ratio Comparison

CGHM has a 0.34% expense ratio, which is lower than AHMFX's 0.42% expense ratio.

Dividends

CGHM vs. AHMFX - Dividend Comparison

CGHM's dividend yield for the trailing twelve months is around 3.80%, less than AHMFX's 4.12% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AHMFX American High-Income Municipal Bond Fund Class F-2	4.12%	5.58%	4.04%	2.97%	2.71%	3.44%	3.60%	3.68%	3.88%	4.19%	3.74%	4.19%
CGHM Capital Group Municipal High-Income ETF	3.80%	3.61%	1.78%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both CGHM and AHMFX in my portfolio?

CGHM and AHMFX have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CGHM or AHMFX?

AHMFX has higher volatility (1.11%) compared to CGHM (1.03%). In terms of maximum drawdown, CGHM dropped -5.90% vs AHMFX's -17.65%.

Which has better risk-adjusted returns?

CGHM currently has the higher Sharpe Ratio (3.03 vs 2.82), 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.