MMK vs. RMME

Last updated Jul 17, 2026

MMK (State Street Prime Money Market ETF) and RMME (Rareview Government Money Market ETF) are both Money Market funds. Both are actively managed. At a 0.24 correlation, their price movements are largely independent. MMK charges 0.18%/yr vs 0.30%/yr for RMME.

Performance

MMK vs. RMME - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street Prime Money Market ETF (MMK) and Rareview Government Money Market ETF (RMME). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

MMK

• 1D: 0.01%
• 1M: 0.30%
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

RMME

• 1D: 0.01%
• 1M: 0.26%
• 6M: 1.67%
• YTD: 1.79%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MMK vs. RMME - Yearly Performance Comparison

	2026 (YTD)
MMK State Street Prime Money Market ETF	1.53%
RMME Rareview Government Money Market ETF	1.42%

Correlation

The correlation between MMK and RMME is 0.24, 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 Feb 12, 2026	0.24

Return for Risk

MMK vs. RMME - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street Prime Money Market ETF (MMK) and Rareview Government Money Market ETF (RMME). 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.

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

Drawdowns

MMK vs. RMME - Drawdown Comparison

The maximum MMK drawdown since its inception was -0.01%, smaller than the maximum RMME drawdown of -0.17%. Use the drawdown chart below to compare losses from any high point for MMK and RMME.

Drawdown Indicators

	MMK	RMME	Difference
Max Drawdown Largest peak-to-trough decline	-0.01%	-0.17%	+0.16%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.00%	-0.00%	0.00%

Volatility

Volatility by Period

	MMK	RMME	Difference
Volatility (1Y) Calculated over the trailing 1-year period	0.18%	0.41%	-0.23%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.18%	0.41%	-0.23%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.18%	0.41%	-0.23%

MMK vs. RMME - Expense Ratio Comparison

MMK has a 0.18% expense ratio, which is lower than RMME's 0.30% expense ratio.

Dividends

MMK vs. RMME - Dividend Comparison

MMK's dividend yield for the trailing twelve months is around 1.38%, less than RMME's 1.89% yield.

Position	TTM	2025
MMK State Street Prime Money Market ETF	1.38%	0.00%
RMME Rareview Government Money Market ETF	1.89%	0.26%

Frequently Asked Questions

Can I hold both MMK and RMME in my portfolio?

MMK and RMME have a correlation of 0.24, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, MMK or RMME?

On fees, MMK 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, MMK or RMME?

MMK is cheaper with a 0.18% expense ratio, compared with 0.30% for RMME.

Which ETF pays a higher dividend yield, MMK or RMME?

RMME has the higher dividend yield at 1.89%, compared with 1.38% for MMK.

What is the main difference between MMK and RMME?

They also come from different issuers: State Street and Rareview. Their fees differ too: 0.18% for MMK and 0.30% for RMME.