AFTEX vs. AMHIX

Last updated Jun 4, 2026

AFTEX (American Funds Tax Exempt Bond Fund) and AMHIX (American High-Income Municipal Bond Fund) are both mutual funds - AFTEX is a Municipal Bonds fund managed by American Funds, while AMHIX is a High Yield Muni fund managed by American Funds. Over the past 10 years, AFTEX returned 2.18%/yr vs 3.29%/yr for AMHIX. Their correlation of 0.89 suggests significant overlap in exposure. AFTEX charges 0.50%/yr vs 0.63%/yr for AMHIX.

Performance

AFTEX vs. AMHIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Tax Exempt Bond Fund (AFTEX) and American High-Income Municipal Bond Fund (AMHIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AFTEX achieves a 1.58% return, which is significantly lower than AMHIX's 2.23% return. Over the past 10 years, AFTEX has underperformed AMHIX with an annualized return of 2.18%, while AMHIX has yielded a comparatively higher 3.29% annualized return.

AFTEX

• 1D: 0.16%
• 1M: 0.74%
• YTD: 1.58%
• 6M: 1.93%
• 1Y: 7.03%
• 3Y*: 4.16%
• 5Y*: 0.93%
• 10Y*: 2.18%

AMHIX

• 1D: 0.19%
• 1M: 0.97%
• YTD: 2.23%
• 6M: 2.71%
• 1Y: 8.39%
• 3Y*: 6.13%
• 5Y*: 1.74%
• 10Y*: 3.29%

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

AFTEX vs. AMHIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AFTEX American Funds Tax Exempt Bond Fund	1.58%	4.88%	2.28%	5.96%	-9.68%	1.87%	4.73%	7.42%	0.78%	5.83%
AMHIX American High-Income Municipal Bond Fund	2.23%	5.70%	6.19%	7.18%	-12.59%	5.28%	4.39%	8.88%	1.59%	8.89%

Correlation

The correlation between AFTEX and AMHIX is 0.92, 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	0.92
Correlation (3Y) Calculated over the trailing 3-year period	0.91
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (10Y) Calculated over the trailing 10-year period	0.90
Correlation (All Time) Calculated using the full available price history since Sep 27, 1994	0.89

The correlation between AFTEX and AMHIX has been stable across timeframes, ranging from 0.89 to 0.93 - a consistent structural relationship.

Return for Risk

AFTEX vs. AMHIX — Risk / Return Rank

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

AFTEX

AFTEX Risk / Return Rank: 70
AFTEX Sharpe Ratio Rank: 83
AFTEX Sortino Ratio Rank: 88
AFTEX Omega Ratio Rank: 91
AFTEX Calmar Ratio Rank: 45
AFTEX Martin Ratio Rank: 42

AMHIX

AMHIX Risk / Return Rank: 76
AMHIX Sharpe Ratio Rank: 85
AMHIX Sortino Ratio Rank: 91
AMHIX Omega Ratio Rank: 91
AMHIX Calmar Ratio Rank: 62
AMHIX Martin Ratio Rank: 52

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.

AFTEX vs. AMHIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Tax Exempt Bond Fund (AFTEX) and American High-Income Municipal Bond Fund (AMHIX). 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.

	AFTEX	AMHIX	Difference
Sharpe ratio: Return per unit of total volatility	2.68	2.77	-0.09
Sortino ratio: Return per unit of downside risk	4.22	4.49	-0.27
Omega ratio: Gain probability vs. loss probability	1.66	1.67	-0.01
Calmar ratio: Return relative to maximum drawdown	2.56	3.02	-0.47
Martin ratio: Return relative to average drawdown	8.94	10.73	-1.79
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AFTEX vs. AMHIX - Sharpe Ratio Comparison

The current AFTEX Sharpe Ratio is 2.68, which is comparable to the AMHIX Sharpe Ratio of 2.77. The chart below compares the historical Sharpe Ratios of AFTEX and AMHIX, 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

	AFTEX	AMHIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.68	2.77	-0.09
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.25	0.36	-0.11
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.58	0.73	-0.15
Sharpe Ratio (All Time) Calculated using the full available price history	1.43	1.40	+0.03

Drawdowns

AFTEX vs. AMHIX - Drawdown Comparison

The maximum AFTEX drawdown since its inception was -14.55%, smaller than the maximum AMHIX drawdown of -21.74%. Use the drawdown chart below to compare losses from any high point for AFTEX and AMHIX.

Drawdown Indicators

	AFTEX	AMHIX	Difference
Max Drawdown Largest peak-to-trough decline	-14.55%	-21.74%	+7.19%
Max Drawdown (1Y) Largest decline over 1 year	-2.76%	-2.76%	0.00%
Max Drawdown (3Y) Largest decline over 3 years	-5.21%	-6.25%	+1.04%
Max Drawdown (5Y) Largest decline over 5 years	-14.55%	-17.81%	+3.26%
Max Drawdown (10Y) Largest decline over 10 years	-14.55%	-17.81%	+3.26%
Current Drawdown Current decline from peak	-0.42%	-0.02%	-0.40%
Average Drawdown Average peak-to-trough decline	-1.66%	-2.12%	+0.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.79%	0.78%	+0.01%

Volatility

AFTEX vs. AMHIX - Volatility Comparison

American Funds Tax Exempt Bond Fund (AFTEX) and American High-Income Municipal Bond Fund (AMHIX) have volatilities of 1.07% and 1.10%, 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

	AFTEX	AMHIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.07%	1.10%	-0.03%
Volatility (6M) Calculated over the trailing 6-month period	2.01%	2.20%	-0.19%
Volatility (1Y) Calculated over the trailing 1-year period	2.65%	3.03%	-0.38%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.76%	4.84%	-1.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.79%	4.53%	-0.74%

AFTEX vs. AMHIX - Expense Ratio Comparison

AFTEX has a 0.50% expense ratio, which is lower than AMHIX's 0.63% expense ratio.

Dividends

AFTEX vs. AMHIX - Dividend Comparison

AFTEX's dividend yield for the trailing twelve months is around 3.01%, less than AMHIX's 3.88% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AFTEX American Funds Tax Exempt Bond Fund	3.01%	3.98%	2.90%	2.22%	1.75%	2.31%	2.43%	2.83%	2.86%	3.30%	2.90%	3.21%
AMHIX American High-Income Municipal Bond Fund	3.88%	5.26%	3.80%	3.10%	2.53%	3.23%	3.40%	3.46%	3.67%	4.01%	3.55%	4.03%

Frequently Asked Questions

Can I hold both AFTEX and AMHIX in my portfolio?

With a correlation of 0.92, AFTEX and AMHIX 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, AFTEX or AMHIX?

AMHIX has higher volatility (1.10%) compared to AFTEX (1.07%). In terms of maximum drawdown, AFTEX dropped -14.55% vs AMHIX's -21.74%.

Which has better risk-adjusted returns?

AMHIX currently has the higher Sharpe Ratio (2.77 vs 2.68), 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.