TAFM vs. FMUN

Last updated Apr 2, 2026

Compare and contrast key facts about AB Tax-Aware Intermediate Municipal ETF (TAFM) and Fidelity Systematic Municipal Bond Index ETF (FMUN).

TAFM and FMUN are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. TAFM is an actively managed fund by AllianceBernstein. It was launched on Dec 12, 2023. FMUN is an actively managed fund by Fidelity. It was launched on Jul 11, 2019.

Performance

TAFM vs. FMUN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AB Tax-Aware Intermediate Municipal ETF (TAFM) and Fidelity Systematic Municipal Bond Index ETF (FMUN). The values are adjusted to include any dividend payments, if applicable.

TAFM vs. FMUN - Yearly Performance Comparison

	2026 (YTD)	2025
TAFM AB Tax-Aware Intermediate Municipal ETF	0.38%	4.84%
FMUN Fidelity Systematic Municipal Bond Index ETF	-0.17%	4.25%

Returns By Period

In the year-to-date period, TAFM achieves a 0.38% return, which is significantly higher than FMUN's -0.17% return.

TAFM

• 1D: 0.28%
• 1M: -1.72%
• YTD: 0.38%
• 6M: 1.67%
• 1Y: 4.08%
• 3Y*: —
• 5Y*: —
• 10Y*: —

FMUN

• 1D: 0.23%
• 1M: -2.22%
• YTD: -0.17%
• 6M: 1.37%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

TAFM vs. FMUN - Expense Ratio Comparison

TAFM has a 0.28% expense ratio, which is higher than FMUN's 0.05% expense ratio.

TAFM

AB Tax-Aware Intermediate Municipal ETF

FMUN

Fidelity Systematic Municipal Bond Index ETF

Return for Risk

TAFM vs. FMUN — Risk / Return Rank

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

TAFM

TAFM Risk / Return Rank: 33
TAFM Sharpe Ratio Rank: 33
TAFM Sortino Ratio Rank: 27
TAFM Omega Ratio Rank: 39
TAFM Calmar Ratio Rank: 34
TAFM Martin Ratio Rank: 30

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.

TAFM vs. FMUN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AB Tax-Aware Intermediate Municipal ETF (TAFM) and Fidelity Systematic Municipal Bond Index ETF (FMUN). 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.

	TAFM	FMUN	Difference
Sharpe ratio Return per unit of total volatility	0.68	—	—
Sortino ratio Return per unit of downside risk	0.88	—	—
Omega ratio Gain probability vs. loss probability	1.17	—	—
Calmar ratio Return relative to maximum drawdown	1.02	—	—
Martin ratio Return relative to average drawdown	3.06	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	TAFM	FMUN	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.68	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.75	1.00	-0.25

Correlation

The correlation between TAFM and FMUN is 0.61, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

TAFM vs. FMUN - Dividend Comparison

TAFM's dividend yield for the trailing twelve months is around 3.63%, more than FMUN's 3.25% yield.

	TTM	2025	2024	2023
TAFM AB Tax-Aware Intermediate Municipal ETF	3.63%	3.51%	3.35%	0.18%
FMUN Fidelity Systematic Municipal Bond Index ETF	3.25%	2.41%	0.00%	0.00%

Drawdowns

TAFM vs. FMUN - Drawdown Comparison

The maximum TAFM drawdown since its inception was -4.74%, which is greater than FMUN's maximum drawdown of -3.21%. Use the drawdown chart below to compare losses from any high point for TAFM and FMUN.

Drawdown Indicators

	TAFM	FMUN	Difference
Max Drawdown Largest peak-to-trough decline	-4.74%	-3.21%	-1.53%
Max Drawdown (1Y) Largest decline over 1 year	-4.44%	—	—
Current Drawdown Current decline from peak	-1.85%	-2.49%	+0.64%
Average Drawdown Average peak-to-trough decline	-0.94%	-0.67%	-0.27%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.48%	—	—

Volatility

Volatility by Period

	TAFM	FMUN	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.25%	—	—
Volatility (6M) Calculated over the trailing 6-month period	2.19%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	6.00%	4.16%	+1.84%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.07%	4.16%	+0.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.07%	4.16%	+0.91%