AHMFX vs. FDUAX

Last updated Aug 4, 2026

AHMFX (American High-Income Municipal Bond Fund Class F-2) and FDUAX (First Eagle Short Duration High Yield Municipal Fund Class A) are both High Yield Muni funds. Both are actively managed. Over the past year, AHMFX returned 6.46% vs 3.66% for FDUAX. Their 0.72 correlation means they have sometimes moved together and sometimes differently. AHMFX charges 0.42%/yr vs 0.87%/yr for FDUAX.

Performance

AHMFX vs. FDUAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American High-Income Municipal Bond Fund Class F-2 (AHMFX) and First Eagle Short Duration High Yield Municipal Fund Class A (FDUAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AHMFX achieves a 1.26% return, which is significantly lower than FDUAX's 1.46% return.

AHMFX

• 1D: -0.20%
• 1M: -2.06%
• 6M: 0.60%
• YTD: 1.26%
• 1Y: 6.46%
• 3Y*: 5.69%
• 5Y*: 1.36%
• 10Y*: 3.19%
• ALL TIME*: 5.92%

FDUAX

• 1D: -0.20%
• 1M: -1.21%
• 6M: 0.61%
• YTD: 1.46%
• 1Y: 3.66%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 3.65%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
AHMFX American High-Income Municipal Bond Fund Class F-2	$0.00	$0.00	$0.00
FDUAX First Eagle Short Duration High Yield Municipal Fund Class A	$0.00	$0.00	$0.00

AHMFX vs. FDUAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024
AHMFX American High-Income Municipal Bond Fund Class F-2	1.26%	6.03%	6.38%
FDUAX First Eagle Short Duration High Yield Municipal Fund Class A	1.46%	1.20%	6.66%

Correlation

The correlation between AHMFX and FDUAX is 0.61, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.61
Correlation (All Time) Calculated using the full available price history since Jan 17, 2024	0.72

The correlation between AHMFX and FDUAX shifts across timeframes, from 0.61 (1 year) to 0.72 (all time), reflecting how their relationship changes across market environments.

Return for Risk

AHMFX vs. FDUAX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

AHMFX

AHMFX Risk / Return Rank: 83
AHMFX Sharpe Ratio Rank: 90
AHMFX Sortino Ratio Rank: 92
AHMFX Omega Ratio Rank: 93
AHMFX Calmar Ratio Rank: 74
AHMFX Martin Ratio Rank: 64

FDUAX

FDUAX Risk / Return Rank: 63
FDUAX Sharpe Ratio Rank: 53
FDUAX Sortino Ratio Rank: 69
FDUAX Omega Ratio Rank: 81
FDUAX Calmar Ratio Rank: 66
FDUAX Martin Ratio Rank: 48

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

AHMFX vs. FDUAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American High-Income Municipal Bond Fund Class F-2 (AHMFX) and First Eagle Short Duration High Yield Municipal Fund Class A (FDUAX). 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.

	AHMFX	FDUAX	Difference
Sharpe ratio: Return per unit of total volatility	2.31	1.51	+0.80
Sortino ratio: Return per unit of downside risk	3.56	2.48	+1.08
Omega ratio: Gain probability vs. loss probability	1.53	1.39	+0.14
Calmar ratio: Return relative to maximum drawdown	2.53	2.33	+0.20
Martin ratio: Return relative to average drawdown	8.74	7.27	+1.47

AHMFX vs. FDUAX - Sharpe Ratio Comparison

The current AHMFX Sharpe Ratio is 2.31, which is higher than the FDUAX Sharpe Ratio of 1.51. The chart below compares the historical Sharpe Ratios of AHMFX and FDUAX, 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

AHMFX vs. FDUAX - Drawdown Comparison

The maximum AHMFX drawdown since its inception was -17.65%, which is greater than FDUAX's maximum drawdown of -3.96%. Use the drawdown chart below to compare losses from any high point for AHMFX and FDUAX.

Drawdown Indicators

	AHMFX	FDUAX	Difference
Max Drawdown Largest peak-to-trough decline	-17.65%	-3.96%	-13.69%
Max Drawdown (1Y) Largest decline over 1 year	-2.76%	-1.71%	-1.05%
Max Drawdown (3Y) Largest decline over 3 years	-5.68%	—	—
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	-2.06%	-1.31%	-0.75%
Average Drawdown Average peak-to-trough decline	-2.35%	-0.69%	-1.66%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.80%	0.55%	+0.25%

Volatility

AHMFX vs. FDUAX - Volatility Comparison

American High-Income Municipal Bond Fund Class F-2 (AHMFX) has a higher volatility of 0.93% compared to First Eagle Short Duration High Yield Municipal Fund Class A (FDUAX) at 0.60%. This indicates that AHMFX's price experiences larger fluctuations and is considered to be riskier than FDUAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AHMFX	FDUAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.93%	0.60%	+0.33%
Volatility (6M) Calculated over the trailing 6-month period	2.39%	1.88%	+0.51%
Volatility (1Y) Calculated over the trailing 1-year period	3.08%	2.64%	+0.44%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.88%	3.20%	+1.68%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.55%	3.20%	+1.35%

AHMFX vs. FDUAX - Expense Ratio Comparison

AHMFX has a 0.42% expense ratio, which is lower than FDUAX's 0.87% expense ratio.

Dividends

AHMFX vs. FDUAX - Dividend Comparison

AHMFX's dividend yield for the trailing twelve months is around 3.81%, less than FDUAX's 4.87% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AHMFX American High-Income Municipal Bond Fund Class F-2	3.81%	5.58%	4.04%	2.97%	2.71%	3.44%	3.60%	3.68%	3.88%	4.19%	3.74%	4.19%
FDUAX First Eagle Short Duration High Yield Municipal Fund Class A	4.87%	4.83%	3.84%	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 AHMFX and FDUAX in my portfolio?

AHMFX and FDUAX have a correlation of 0.61, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AHMFX or FDUAX?

AHMFX has higher volatility (0.93%) compared to FDUAX (0.60%). In terms of maximum drawdown, AHMFX dropped -17.65% vs FDUAX's -3.96%.

Which has better risk-adjusted returns?

AHMFX currently has the higher Sharpe Ratio (2.31 vs 1.51), 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.