RMOP vs. THYM

Last updated Jun 4, 2026

RMOP (Rockefeller Opportunistic Municipal Bond ETF) and THYM (T. Rowe Price High Income Municipal ETF) are both High Yield Muni funds. Both are actively managed. A 0.74 correlation means they provide meaningful diversification when combined. RMOP charges 0.55%/yr vs 0.32%/yr for THYM.

Performance

RMOP vs. THYM - Performance Comparison

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

Returns By Period

The year-to-date returns for both stocks are quite close, with RMOP having a 3.38% return and THYM slightly lower at 3.33%.

RMOP

• 1D: 0.02%
• 1M: 1.17%
• YTD: 3.38%
• 6M: 3.85%
• 1Y: 10.23%
• 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)

RMOP vs. THYM - Yearly Performance Comparison

	2026 (YTD)	2025
RMOP Rockefeller Opportunistic Municipal Bond ETF	3.38%	0.18%
THYM T. Rowe Price High Income Municipal ETF	3.33%	0.27%

Correlation

The correlation between RMOP and THYM is 0.74, 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	0.74

Return for Risk

RMOP vs. THYM — Risk / Return Rank

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

RMOP

RMOP Risk / Return Rank: 82
RMOP Sharpe Ratio Rank: 83
RMOP Sortino Ratio Rank: 88
RMOP Omega Ratio Rank: 89
RMOP Calmar Ratio Rank: 77
RMOP Martin Ratio Rank: 74

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.

RMOP vs. THYM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rockefeller Opportunistic Municipal Bond ETF (RMOP) 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.

	RMOP	THYM	Difference
Sharpe ratio: Return per unit of total volatility	2.70	—	—
Sortino ratio: Return per unit of downside risk	4.03	—	—
Omega ratio: Gain probability vs. loss probability	1.56	—	—
Calmar ratio: Return relative to maximum drawdown	3.87	—	—
Martin ratio: Return relative to average drawdown	13.86	—	—
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

	RMOP	THYM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.70	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.99	1.62	-0.63

Drawdowns

RMOP vs. THYM - Drawdown Comparison

The maximum RMOP drawdown since its inception was -6.67%, which is greater than THYM's maximum drawdown of -2.93%. Use the drawdown chart below to compare losses from any high point for RMOP and THYM.

Drawdown Indicators

	RMOP	THYM	Difference
Max Drawdown Largest peak-to-trough decline	-6.67%	-2.93%	-3.74%
Max Drawdown (1Y) Largest decline over 1 year	-2.66%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-1.52%	-0.49%	-1.03%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.74%	—	—

Volatility

Volatility by Period

	RMOP	THYM	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.21%	—	—
Volatility (6M) Calculated over the trailing 6-month period	2.67%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	3.81%	4.35%	-0.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.66%	4.35%	+1.31%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.66%	4.35%	+1.31%

RMOP vs. THYM - Expense Ratio Comparison

RMOP has a 0.55% expense ratio, which is higher than THYM's 0.32% expense ratio.

Dividends

RMOP vs. THYM - Dividend Comparison

RMOP's dividend yield for the trailing twelve months is around 5.20%, more than THYM's 2.18% yield.

Position	TTM	2025	2024
RMOP Rockefeller Opportunistic Municipal Bond ETF	5.20%	5.15%	1.27%
THYM T. Rowe Price High Income Municipal ETF	2.18%	0.37%	0.00%

Frequently Asked Questions

Can I hold both RMOP and THYM in my portfolio?

RMOP and THYM have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, RMOP or THYM?

On fees, THYM is cheaper at 0.32% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, RMOP or THYM?

THYM is cheaper with a 0.32% expense ratio, compared with 0.55% for RMOP.

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

RMOP has the higher dividend yield at 5.20%, compared with 2.18% for THYM.

What is the main difference between RMOP and THYM?

They also come from different issuers: Rockefeller and T. Rowe Price. Their fees differ too: 0.55% for RMOP and 0.32% for THYM.