BSSX vs. THYM

Last updated Jul 17, 2026

BSSX (Invesco BulletShares 2033 Municipal Bond ETF) and THYM (T. Rowe Price High Income Municipal ETF) are both exchange-traded funds - BSSX is a Municipal Bonds fund tracking the Invesco BulletShares USD Municipal Bond 2033 Index, while THYM is a High Yield Muni fund actively managed by T. Rowe Price. BSSX is passively managed, while THYM is actively managed. At a 0.50 correlation, their price movements are largely independent. BSSX charges 0.18%/yr vs 0.32%/yr for THYM.

Performance

BSSX vs. THYM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco BulletShares 2033 Municipal Bond ETF (BSSX) 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, BSSX achieves a 0.99% return, which is significantly lower than THYM's 3.74% return.

BSSX

• 1D: -0.11%
• 1M: -0.07%
• 6M: 0.34%
• YTD: 0.99%
• 1Y: 6.75%
• 3Y*: —
• 5Y*: —
• 10Y*: —

THYM

• 1D: -0.18%
• 1M: 0.05%
• 6M: 2.85%
• YTD: 3.74%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

BSSX vs. THYM - Yearly Performance Comparison

	2026 (YTD)	2025
BSSX Invesco BulletShares 2033 Municipal Bond ETF	0.99%	0.53%
THYM T. Rowe Price High Income Municipal ETF	3.74%	0.25%

Correlation

The correlation between BSSX and THYM is 0.50, 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 20, 2025	0.50

Return for Risk

BSSX vs. THYM — Risk / Return Rank

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

BSSX

BSSX Risk / Return Rank: 72
BSSX Sharpe Ratio Rank: 83
BSSX Sortino Ratio Rank: 87
BSSX Omega Ratio Rank: 90
BSSX Calmar Ratio Rank: 50
BSSX Martin Ratio Rank: 48

THYM

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

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.

BSSX vs. THYM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco BulletShares 2033 Municipal Bond ETF (BSSX) 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.

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.

	BSSX	THYM	Difference
Sharpe ratio: Return per unit of total volatility	2.14	—	—
Sortino ratio: Return per unit of downside risk	3.19	—	—
Omega ratio: Gain probability vs. loss probability	1.45	—	—
Calmar ratio: Return relative to maximum drawdown	2.07	—	—
Martin ratio: Return relative to average drawdown	6.38	—	—

Drawdowns

BSSX vs. THYM - Drawdown Comparison

The maximum BSSX drawdown since its inception was -8.12%, which is greater than THYM's maximum drawdown of -2.93%. Use the drawdown chart below to compare losses from any high point for BSSX and THYM.

Drawdown Indicators

	BSSX	THYM	Difference
Max Drawdown Largest peak-to-trough decline	-8.12%	-2.93%	-5.19%
Max Drawdown (1Y) Largest decline over 1 year	-3.28%	—	—
Current Drawdown Current decline from peak	-1.04%	-0.89%	-0.15%
Average Drawdown Average peak-to-trough decline	-3.16%	-0.46%	-2.70%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.06%	—	—

Volatility

Volatility by Period

	BSSX	THYM	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.67%	—	—
Volatility (6M) Calculated over the trailing 6-month period	2.38%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	3.16%	4.29%	-1.13%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.68%	4.29%	+3.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.68%	4.29%	+3.39%

BSSX vs. THYM - Expense Ratio Comparison

BSSX has a 0.18% expense ratio, which is lower than THYM's 0.32% expense ratio.

Dividends

BSSX vs. THYM - Dividend Comparison

BSSX's dividend yield for the trailing twelve months is around 3.30%, more than THYM's 2.57% yield.

Position	TTM	2025	2024	2023
BSSX Invesco BulletShares 2033 Municipal Bond ETF	3.30%	3.27%	3.29%	0.95%
THYM T. Rowe Price High Income Municipal ETF	2.57%	0.37%	0.00%	0.00%

Frequently Asked Questions

Can I hold both BSSX and THYM in my portfolio?

BSSX and THYM have a correlation of 0.50, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, BSSX or THYM?

On fees, BSSX is cheaper at 0.18% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, BSSX or THYM?

BSSX is cheaper with a 0.18% expense ratio, compared with 0.32% for THYM.

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

BSSX has the higher dividend yield at 3.30%, compared with 2.57% for THYM.

What is the main difference between BSSX and THYM?

BSSX is categorized as Municipal Bonds, while THYM is High Yield Muni. They also come from different issuers: Invesco and T. Rowe Price. Their fees differ too: 0.18% for BSSX and 0.32% for THYM.