MYMF vs. RMCA

Last updated Jun 23, 2026

MYMF (State Street My2026 Municipal Bond ETF) and RMCA (Rockefeller California Municipal Bond ETF) are both Municipal Bonds funds. Both are actively managed. Over the past year, MYMF returned 2.81% vs 7.55% for RMCA. A 0.56 correlation means they provide meaningful diversification when combined. MYMF charges 0.20%/yr vs 0.55%/yr for RMCA.

Performance

MYMF vs. RMCA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street My2026 Municipal Bond ETF (MYMF) and Rockefeller California Municipal Bond ETF (RMCA). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MYMF achieves a 0.74% return, which is significantly lower than RMCA's 2.87% return.

MYMF

• 1D: 0.00%
• 1M: 0.37%
• YTD: 0.74%
• 6M: 0.82%
• 1Y: 2.81%
• 3Y*: —
• 5Y*: —
• 10Y*: —

RMCA

• 1D: 0.04%
• 1M: 1.75%
• YTD: 2.87%
• 6M: 3.16%
• 1Y: 7.55%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MYMF vs. RMCA - Yearly Performance Comparison

	2026 (YTD)	2025	2024
MYMF State Street My2026 Municipal Bond ETF	0.74%	3.01%	0.07%
RMCA Rockefeller California Municipal Bond ETF	2.87%	2.35%	-1.42%

Correlation

The correlation between MYMF and RMCA is 0.29, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.29
Correlation (All Time) Calculated using the full available price history since Sep 24, 2024	0.56

Over the past year, the correlation between MYMF and RMCA has dropped to 0.29 - well below their long-term average of 0.56, suggesting their price drivers have been diverging.

Return for Risk

MYMF vs. RMCA — Risk / Return Rank

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

MYMF

MYMF Risk / Return Rank: 96
MYMF Sharpe Ratio Rank: 96
MYMF Sortino Ratio Rank: 98
MYMF Omega Ratio Rank: 98
MYMF Calmar Ratio Rank: 95
MYMF Martin Ratio Rank: 95

RMCA

RMCA Risk / Return Rank: 70
RMCA Sharpe Ratio Rank: 66
RMCA Sortino Ratio Rank: 74
RMCA Omega Ratio Rank: 79
RMCA Calmar Ratio Rank: 67
RMCA Martin Ratio Rank: 61

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.

MYMF vs. RMCA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street My2026 Municipal Bond ETF (MYMF) and Rockefeller California Municipal Bond ETF (RMCA). 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.

	MYMF	RMCA	Difference
Sharpe ratio: Return per unit of total volatility	3.85	2.10	+1.75
Sortino ratio: Return per unit of downside risk	6.86	3.18	+3.67
Omega ratio: Gain probability vs. loss probability	2.19	1.45	+0.74
Calmar ratio: Return relative to maximum drawdown	7.40	3.23	+4.18
Martin ratio: Return relative to average drawdown	27.37	10.74	+16.63

MYMF vs. RMCA - Sharpe Ratio Comparison

The current MYMF Sharpe Ratio is 3.85, which is higher than the RMCA Sharpe Ratio of 2.10. The chart below compares the historical Sharpe Ratios of MYMF and RMCA, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

MYMF vs. RMCA - Drawdown Comparison

The maximum MYMF drawdown since its inception was -2.02%, smaller than the maximum RMCA drawdown of -5.95%. Use the drawdown chart below to compare losses from any high point for MYMF and RMCA.

Drawdown Indicators

	MYMF	RMCA	Difference
Max Drawdown Largest peak-to-trough decline	-2.02%	-5.95%	+3.93%
Max Drawdown (1Y) Largest decline over 1 year	-0.38%	-2.35%	+1.97%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.18%	-1.59%	+1.41%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.10%	0.70%	-0.60%

Volatility

MYMF vs. RMCA - Volatility Comparison

The current volatility for State Street My2026 Municipal Bond ETF (MYMF) is 0.24%, while Rockefeller California Municipal Bond ETF (RMCA) has a volatility of 0.86%. This indicates that MYMF experiences smaller price fluctuations and is considered to be less risky than RMCA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MYMF	RMCA	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.24%	0.86%	-0.62%
Volatility (6M) Calculated over the trailing 6-month period	0.54%	2.47%	-1.93%
Volatility (1Y) Calculated over the trailing 1-year period	0.73%	3.62%	-2.89%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.63%	5.33%	-3.70%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.63%	5.33%	-3.70%

MYMF vs. RMCA - Expense Ratio Comparison

MYMF has a 0.20% expense ratio, which is lower than RMCA's 0.55% expense ratio.

Dividends

MYMF vs. RMCA - Dividend Comparison

MYMF's dividend yield for the trailing twelve months is around 2.47%, less than RMCA's 4.33% yield.

Position	TTM	2025	2024
MYMF State Street My2026 Municipal Bond ETF	2.47%	2.80%	0.83%
RMCA Rockefeller California Municipal Bond ETF	4.33%	4.51%	1.20%

Frequently Asked Questions

Can I hold both MYMF and RMCA in my portfolio?

MYMF and RMCA have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MYMF or RMCA?

RMCA has higher volatility (0.86%) compared to MYMF (0.24%). In terms of maximum drawdown, MYMF dropped -2.02% vs RMCA's -5.95%.

Which ETF is better, MYMF or RMCA?

On 1-year performance, RMCA leads with 7.55% vs 2.81% for MYMF. On fees, MYMF is cheaper at 0.20% per year. On volatility, MYMF has been the lower-risk option at 0.24%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, MYMF or RMCA?

Over the 1-year period, RMCA has performed better with a 7.55% return vs 2.81%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, MYMF or RMCA?

MYMF is cheaper with a 0.20% expense ratio, compared with 0.55% for RMCA.

Which ETF pays a higher dividend yield, MYMF or RMCA?

RMCA has the higher dividend yield at 4.33%, compared with 2.47% for MYMF.

What is the main difference between MYMF and RMCA?

They also come from different issuers: State Street and Rockefeller. Their fees differ too: 0.20% for MYMF and 0.55% for RMCA.

Which has better risk-adjusted returns?

MYMF currently has the higher Sharpe Ratio (3.85 vs 2.10), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.