MYMK vs. THYM

Last updated Jun 5, 2026

MYMK (SPDR SSGA My2031 Municipal Bond ETF) and THYM (T. Rowe Price High Income Municipal ETF) are both exchange-traded funds - MYMK is a Municipal Bonds fund actively managed by State Street, while THYM is a High Yield Muni fund actively managed by T. Rowe Price. Both are actively managed. A 0.56 correlation means they provide meaningful diversification when combined. MYMK charges 0.20%/yr vs 0.32%/yr for THYM.

Performance

MYMK vs. THYM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SPDR SSGA My2031 Municipal Bond ETF (MYMK) 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, MYMK achieves a 0.84% return, which is significantly lower than THYM's 3.70% return.

MYMK

• 1D: 0.08%
• 1M: 0.39%
• YTD: 0.84%
• 6M: 1.11%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

THYM

• 1D: 0.36%
• 1M: 1.53%
• YTD: 3.70%
• 6M: 4.04%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MYMK vs. THYM - Yearly Performance Comparison

	2026 (YTD)	2025
MYMK SPDR SSGA My2031 Municipal Bond ETF	0.84%	0.29%
THYM T. Rowe Price High Income Municipal ETF	3.70%	0.27%

Correlation

The correlation between MYMK and THYM is 0.56, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Nov 21, 2025	0.56

Return for Risk

MYMK vs. THYM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SPDR SSGA My2031 Municipal Bond ETF (MYMK) 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

	MYMK	THYM	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	1.17	1.77	-0.60

Drawdowns

MYMK vs. THYM - Drawdown Comparison

The maximum MYMK drawdown since its inception was -2.22%, smaller than the maximum THYM drawdown of -2.93%. Use the drawdown chart below to compare losses from any high point for MYMK and THYM.

Drawdown Indicators

	MYMK	THYM	Difference
Max Drawdown Largest peak-to-trough decline	-2.22%	-2.93%	+0.71%
Current Drawdown Current decline from peak	-0.98%	0.00%	-0.98%
Average Drawdown Average peak-to-trough decline	-0.57%	-0.49%	-0.08%

Volatility

Volatility by Period

	MYMK	THYM	Difference
Volatility (1Y) Calculated over the trailing 1-year period	1.96%	4.35%	-2.39%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.96%	4.35%	-2.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.96%	4.35%	-2.39%

MYMK vs. THYM - Expense Ratio Comparison

MYMK has a 0.20% expense ratio, which is lower than THYM's 0.32% expense ratio.

Dividends

MYMK vs. THYM - Dividend Comparison

MYMK's dividend yield for the trailing twelve months is around 1.83%, less than THYM's 2.18% yield.

Position	TTM	2025
MYMK SPDR SSGA My2031 Municipal Bond ETF	1.83%	0.77%
THYM T. Rowe Price High Income Municipal ETF	2.18%	0.37%

Frequently Asked Questions

Can I hold both MYMK and THYM in my portfolio?

MYMK and THYM have a correlation of 0.56, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, MYMK or THYM?

On fees, MYMK is cheaper at 0.20% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, MYMK or THYM?

MYMK is cheaper with a 0.20% expense ratio, compared with 0.32% for THYM.

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

THYM has the higher dividend yield at 2.18%, compared with 1.83% for MYMK.

What is the main difference between MYMK and THYM?

MYMK is categorized as Municipal Bonds, while THYM is High Yield Muni. They also come from different issuers: State Street and T. Rowe Price. Their fees differ too: 0.20% for MYMK and 0.32% for THYM.