MYMG vs. RMCA

Last updated Jun 24, 2026

MYMG (State Street My2027 Municipal Bond ETF) and RMCA (Rockefeller California Municipal Bond ETF) are both Municipal Bonds funds. Both are actively managed. Over the past year, MYMG returned 3.64% vs 7.24% for RMCA. A 0.71 correlation means they provide meaningful diversification when combined. MYMG charges 0.20%/yr vs 0.55%/yr for RMCA.

Performance

MYMG vs. RMCA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street My2027 Municipal Bond ETF (MYMG) 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, MYMG achieves a 1.36% return, which is significantly lower than RMCA's 2.75% return.

MYMG

• 1D: 0.00%
• 1M: 0.43%
• YTD: 1.36%
• 6M: 1.48%
• 1Y: 3.64%
• 3Y*: —
• 5Y*: —
• 10Y*: —

RMCA

• 1D: -0.12%
• 1M: 1.62%
• YTD: 2.75%
• 6M: 2.99%
• 1Y: 7.24%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MYMG vs. RMCA - Yearly Performance Comparison

	2026 (YTD)	2025	2024
MYMG State Street My2027 Municipal Bond ETF	1.36%	2.64%	-0.26%
RMCA Rockefeller California Municipal Bond ETF	2.75%	2.35%	-1.42%

Correlation

The correlation between MYMG and RMCA is 0.59, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.59
Correlation (All Time) Calculated using the full available price history since Sep 24, 2024	0.71

The correlation between MYMG and RMCA shifts across timeframes, from 0.59 (1 year) to 0.71 (all time), reflecting how their relationship changes across market environments.

Return for Risk

MYMG vs. RMCA — Risk / Return Rank

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

MYMG

MYMG Risk / Return Rank: 97
MYMG Sharpe Ratio Rank: 97
MYMG Sortino Ratio Rank: 98
MYMG Omega Ratio Rank: 98
MYMG Calmar Ratio Rank: 97
MYMG Martin Ratio Rank: 96

RMCA

RMCA Risk / Return Rank: 71
RMCA Sharpe Ratio Rank: 68
RMCA Sortino Ratio Rank: 75
RMCA Omega Ratio Rank: 80
RMCA Calmar Ratio Rank: 67
RMCA Martin Ratio Rank: 62

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.

MYMG vs. RMCA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street My2027 Municipal Bond ETF (MYMG) 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.

	MYMG	RMCA	Difference
Sharpe ratio: Return per unit of total volatility	4.57	2.01	+2.55
Sortino ratio: Return per unit of downside risk	7.58	3.06	+4.53
Omega ratio: Gain probability vs. loss probability	2.32	1.43	+0.89
Calmar ratio: Return relative to maximum drawdown	10.22	3.10	+7.12
Martin ratio: Return relative to average drawdown	33.71	10.31	+23.40

MYMG vs. RMCA - Sharpe Ratio Comparison

The current MYMG Sharpe Ratio is 4.57, which is higher than the RMCA Sharpe Ratio of 2.01. The chart below compares the historical Sharpe Ratios of MYMG 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

MYMG vs. RMCA - Drawdown Comparison

The maximum MYMG drawdown since its inception was -2.31%, smaller than the maximum RMCA drawdown of -5.95%. Use the drawdown chart below to compare losses from any high point for MYMG and RMCA.

Drawdown Indicators

	MYMG	RMCA	Difference
Max Drawdown Largest peak-to-trough decline	-2.31%	-5.95%	+3.64%
Max Drawdown (1Y) Largest decline over 1 year	-0.36%	-2.35%	+1.99%
Current Drawdown Current decline from peak	0.00%	-0.12%	+0.12%
Average Drawdown Average peak-to-trough decline	-0.32%	-1.59%	+1.27%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.11%	0.70%	-0.59%

Volatility

MYMG vs. RMCA - Volatility Comparison

The current volatility for State Street My2027 Municipal Bond ETF (MYMG) is 0.21%, while Rockefeller California Municipal Bond ETF (RMCA) has a volatility of 0.88%. This indicates that MYMG 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

	MYMG	RMCA	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.21%	0.88%	-0.67%
Volatility (6M) Calculated over the trailing 6-month period	0.58%	2.48%	-1.90%
Volatility (1Y) Calculated over the trailing 1-year period	0.80%	3.62%	-2.82%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.01%	5.32%	-3.31%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.01%	5.32%	-3.31%

MYMG vs. RMCA - Expense Ratio Comparison

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

Dividends

MYMG vs. RMCA - Dividend Comparison

MYMG's dividend yield for the trailing twelve months is around 2.88%, less than RMCA's 4.34% yield.

Position	TTM	2025	2024
MYMG State Street My2027 Municipal Bond ETF	2.88%	3.03%	0.89%
RMCA Rockefeller California Municipal Bond ETF	4.34%	4.51%	1.20%

Frequently Asked Questions

Can I hold both MYMG and RMCA in my portfolio?

MYMG and RMCA have a correlation of 0.59, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MYMG or RMCA?

RMCA has higher volatility (0.88%) compared to MYMG (0.21%). In terms of maximum drawdown, MYMG dropped -2.31% vs RMCA's -5.95%.

Which ETF is better, MYMG or RMCA?

On 1-year performance, RMCA leads with 7.24% vs 3.64% for MYMG. On fees, MYMG is cheaper at 0.20% per year. On volatility, MYMG has been the lower-risk option at 0.21%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, MYMG or RMCA?

Over the 1-year period, RMCA has performed better with a 7.24% return vs 3.64%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, MYMG or RMCA?

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

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

RMCA has the higher dividend yield at 4.34%, compared with 2.88% for MYMG.

What is the main difference between MYMG and RMCA?

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

Which has better risk-adjusted returns?

MYMG currently has the higher Sharpe Ratio (4.57 vs 2.01), 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.