AMUN vs. THYM

Last updated Jun 4, 2026

AMUN (abrdn Ultra Short Municipal Income Active ETF) and THYM (T. Rowe Price High Income Municipal ETF) are both exchange-traded funds - AMUN is a Municipal Bonds fund actively managed by abrdn, while THYM is a High Yield Muni fund actively managed by T. Rowe Price. Both are actively managed. At a 0.12 correlation, their price movements are largely independent. AMUN charges 0.25%/yr vs 0.32%/yr for THYM.

Performance

AMUN vs. THYM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in abrdn Ultra Short Municipal Income Active ETF (AMUN) and T. Rowe Price High Income Municipal ETF (THYM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AMUN achieves a 1.11% return, which is significantly lower than THYM's 3.33% return.

AMUN

• 1D: -0.02%
• 1M: 0.32%
• YTD: 1.11%
• 6M: 1.36%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

THYM

• 1D: 0.14%
• 1M: 1.14%
• YTD: 3.33%
• 6M: 3.62%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

AMUN vs. THYM - Yearly Performance Comparison

	2026 (YTD)	2025
AMUN abrdn Ultra Short Municipal Income Active ETF	1.11%	0.36%
THYM T. Rowe Price High Income Municipal ETF	3.33%	0.27%

Correlation

The correlation between AMUN and THYM is 0.12, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since Nov 21, 2025	0.12

Return for Risk

AMUN vs. THYM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for abrdn Ultra Short Municipal Income Active ETF (AMUN) and T. Rowe Price High Income Municipal ETF (THYM). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	AMUN	THYM	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	2.05	1.62	+0.43

Drawdowns

AMUN vs. THYM - Drawdown Comparison

The maximum AMUN drawdown since its inception was -0.61%, smaller than the maximum THYM drawdown of -2.93%. Use the drawdown chart below to compare losses from any high point for AMUN and THYM.

Drawdown Indicators

	AMUN	THYM	Difference
Max Drawdown Largest peak-to-trough decline	-0.61%	-2.93%	+2.32%
Current Drawdown Current decline from peak	-0.02%	0.00%	-0.02%
Average Drawdown Average peak-to-trough decline	-0.09%	-0.49%	+0.40%

Volatility

Volatility by Period

	AMUN	THYM	Difference
Volatility (1Y) Calculated over the trailing 1-year period	1.01%	4.35%	-3.34%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.01%	4.35%	-3.34%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.01%	4.35%	-3.34%

AMUN vs. THYM - Expense Ratio Comparison

AMUN has a 0.25% expense ratio, which is lower than THYM's 0.32% expense ratio.

Dividends

AMUN vs. THYM - Dividend Comparison

AMUN's dividend yield for the trailing twelve months is around 1.89%, less than THYM's 2.18% yield.

Position	TTM	2025
AMUN abrdn Ultra Short Municipal Income Active ETF	1.89%	0.66%
THYM T. Rowe Price High Income Municipal ETF	2.18%	0.37%

Frequently Asked Questions

Can I hold both AMUN and THYM in my portfolio?

AMUN and THYM have a correlation of 0.12, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, AMUN or THYM?

On fees, AMUN is cheaper at 0.25% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, AMUN or THYM?

AMUN is cheaper with a 0.25% expense ratio, compared with 0.32% for THYM.

Which ETF pays a higher dividend yield, AMUN or THYM?

THYM has the higher dividend yield at 2.18%, compared with 1.89% for AMUN.

What is the main difference between AMUN and THYM?

AMUN is categorized as Municipal Bonds, while THYM is High Yield Muni. They also come from different issuers: abrdn and T. Rowe Price. Their fees differ too: 0.25% for AMUN and 0.32% for THYM.