STAX vs. RMCA

Last updated Jun 4, 2026

STAX (Macquarie Tax-Free USA Short Term ETF) and RMCA (Rockefeller California Municipal Bond ETF) are both Municipal Bonds funds. Both are actively managed. Over the past year, STAX returned 3.87% vs 7.50% for RMCA. A 0.71 correlation means they provide meaningful diversification when combined. STAX charges 0.29%/yr vs 0.55%/yr for RMCA.

Performance

STAX vs. RMCA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Macquarie Tax-Free USA Short Term ETF (STAX) 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, STAX achieves a 0.93% return, which is significantly lower than RMCA's 2.37% return.

STAX

• 1D: -0.08%
• 1M: 0.13%
• YTD: 0.93%
• 6M: 1.25%
• 1Y: 3.87%
• 3Y*: —
• 5Y*: —
• 10Y*: —

RMCA

• 1D: -0.16%
• 1M: 0.68%
• YTD: 2.37%
• 6M: 2.78%
• 1Y: 7.50%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

STAX vs. RMCA - Yearly Performance Comparison

	2026 (YTD)	2025	2024
STAX Macquarie Tax-Free USA Short Term ETF	0.93%	4.12%	1.02%
RMCA Rockefeller California Municipal Bond ETF	2.37%	2.35%	-0.14%

Correlation

The correlation between STAX and RMCA is 0.60, 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	0.60
Correlation (All Time) Calculated using the full available price history since Aug 14, 2024	0.71

The correlation between STAX and RMCA shifts across timeframes, from 0.60 (1 year) to 0.71 (all time), reflecting how their relationship changes across market environments.

Return for Risk

STAX vs. RMCA — Risk / Return Rank

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

STAX

STAX Risk / Return Rank: 86
STAX Sharpe Ratio Rank: 95
STAX Sortino Ratio Rank: 97
STAX Omega Ratio Rank: 98
STAX Calmar Ratio Rank: 74
STAX Martin Ratio Rank: 65

RMCA

RMCA Risk / Return Rank: 65
RMCA Sharpe Ratio Rank: 60
RMCA Sortino Ratio Rank: 66
RMCA Omega Ratio Rank: 71
RMCA Calmar Ratio Rank: 66
RMCA Martin Ratio Rank: 60

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.

STAX vs. RMCA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Macquarie Tax-Free USA Short Term ETF (STAX) 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.

	STAX	RMCA	Difference
Sharpe ratio: Return per unit of total volatility	3.86	2.00	+1.85
Sortino ratio: Return per unit of downside risk	6.16	3.01	+3.15
Omega ratio: Gain probability vs. loss probability	1.99	1.42	+0.57
Calmar ratio: Return relative to maximum drawdown	3.70	3.21	+0.49
Martin ratio: Return relative to average drawdown	11.77	10.63	+1.14
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

STAX vs. RMCA - Sharpe Ratio Comparison

The current STAX Sharpe Ratio is 3.86, which is higher than the RMCA Sharpe Ratio of 2.00. The chart below compares the historical Sharpe Ratios of STAX 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.

Sharpe Ratios by Period

	STAX	RMCA	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.86	2.00	+1.85
Sharpe Ratio (All Time) Calculated using the full available price history	2.64	0.48	+2.17

Drawdowns

STAX vs. RMCA - Drawdown Comparison

The maximum STAX drawdown since its inception was -1.42%, smaller than the maximum RMCA drawdown of -5.95%. Use the drawdown chart below to compare losses from any high point for STAX and RMCA.

Drawdown Indicators

	STAX	RMCA	Difference
Max Drawdown Largest peak-to-trough decline	-1.42%	-5.95%	+4.53%
Max Drawdown (1Y) Largest decline over 1 year	-1.05%	-2.35%	+1.30%
Current Drawdown Current decline from peak	-0.43%	-0.16%	-0.27%
Average Drawdown Average peak-to-trough decline	-0.23%	-1.63%	+1.40%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.33%	0.71%	-0.38%

Volatility

STAX vs. RMCA - Volatility Comparison

The current volatility for Macquarie Tax-Free USA Short Term ETF (STAX) is 0.35%, while Rockefeller California Municipal Bond ETF (RMCA) has a volatility of 1.15%. This indicates that STAX 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

	STAX	RMCA	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.35%	1.15%	-0.80%
Volatility (6M) Calculated over the trailing 6-month period	0.79%	2.49%	-1.70%
Volatility (1Y) Calculated over the trailing 1-year period	1.01%	3.76%	-2.75%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.38%	5.38%	-4.00%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.38%	5.38%	-4.00%

STAX vs. RMCA - Expense Ratio Comparison

STAX has a 0.29% expense ratio, which is lower than RMCA's 0.55% expense ratio.

Dividends

STAX vs. RMCA - Dividend Comparison

STAX's dividend yield for the trailing twelve months is around 3.22%, less than RMCA's 4.36% yield.

Position	TTM	2025	2024
RMCA Rockefeller California Municipal Bond ETF	4.36%	4.51%	1.20%
STAX Macquarie Tax-Free USA Short Term ETF	3.22%	3.16%	3.43%

Frequently Asked Questions

Can I hold both STAX and RMCA in my portfolio?

STAX and RMCA have a correlation of 0.60, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, STAX or RMCA?

RMCA has higher volatility (1.15%) compared to STAX (0.35%). In terms of maximum drawdown, STAX dropped -1.42% vs RMCA's -5.95%.

Which ETF is better, STAX or RMCA?

On 1-year performance, RMCA leads with 7.50% vs 3.87% for STAX. On fees, STAX is cheaper at 0.29% per year. On volatility, STAX has been the lower-risk option at 0.35%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, STAX or RMCA?

Over the 1-year period, RMCA has performed better with a 7.50% return vs 3.87%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, STAX or RMCA?

STAX is cheaper with a 0.29% expense ratio, compared with 0.55% for RMCA.

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

RMCA has the higher dividend yield at 4.36%, compared with 3.22% for STAX.

What is the main difference between STAX and RMCA?

They also come from different issuers: Macquarie and Rockefeller. Their fees differ too: 0.29% for STAX and 0.55% for RMCA.

Which has better risk-adjusted returns?

STAX currently has the higher Sharpe Ratio (3.86 vs 2.00), 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.