GMMF vs. RMME

Last updated Aug 5, 2026

GMMF (iShares Government Money Market ETF) and RMME (Rareview Government Money Market ETF) are both Money Market funds. Both are actively managed. Their 0.18 correlation means their historical movements had little consistent relationship. GMMF charges 0.20%/yr vs 0.30%/yr for RMME.

Performance

GMMF vs. RMME - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Government Money Market ETF (GMMF) and Rareview Government Money Market ETF (RMME). 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 GMMF having a 2.06% return and RMME slightly lower at 1.97%.

GMMF

• 1D: 0.00%
• 1M: 0.29%
• 6M: 1.73%
• YTD: 2.06%
• 1Y: 3.71%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 3.87%

RMME

• 1D: 0.00%
• 1M: 0.30%
• 6M: 1.68%
• YTD: 1.97%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
GMMF iShares Government Money Market ETF	$1.71M	$2.04M	$3.21M
RMME Rareview Government Money Market ETF	$51.50K	$76.13K	$346.74K

GMMF vs. RMME - Yearly Performance Comparison

	2026 (YTD)	2025
GMMF iShares Government Money Market ETF	2.06%	0.31%
RMME Rareview Government Money Market ETF	1.97%	0.29%

Correlation

The correlation between GMMF and RMME is 0.18, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (All Time) Calculated using the full available price history since Dec 2, 2025	0.18

Return for Risk

GMMF vs. RMME — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

GMMF

GMMF Risk / Return Rank: 100
GMMF Sharpe Ratio Rank: 100
GMMF Sortino Ratio Rank: 100
GMMF Omega Ratio Rank: 100
GMMF Calmar Ratio Rank: 100
GMMF Martin Ratio Rank: 100

RMME

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

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

GMMF vs. RMME - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Government Money Market ETF (GMMF) 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.

	GMMF	RMME	Difference
Sharpe ratio: Return per unit of total volatility	18.68	—	—
Sortino ratio: Return per unit of downside risk	138.07	—	—
Omega ratio: Gain probability vs. loss probability	40.16	—	—
Calmar ratio: Return relative to maximum drawdown	249.27	—	—
Martin ratio: Return relative to average drawdown	2,193.54	—	—

Drawdowns

GMMF vs. RMME - Drawdown Comparison

The maximum GMMF drawdown since its inception was -0.03%, smaller than the maximum RMME drawdown of -0.17%. Use the drawdown chart below to compare losses from any high point for GMMF and RMME.

Drawdown Indicators

	GMMF	RMME	Difference
Max Drawdown Largest peak-to-trough decline	-0.03%	-0.17%	+0.14%
Max Drawdown (1Y) Largest decline over 1 year	-0.01%	—	—
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%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.00%	—	—

Volatility

Volatility by Period

	GMMF	RMME	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.05%	—	—
Volatility (6M) Calculated over the trailing 6-month period	0.13%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	0.20%	0.40%	-0.20%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.23%	0.40%	-0.17%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.23%	0.40%	-0.17%

GMMF vs. RMME - Expense Ratio Comparison

GMMF has a 0.20% expense ratio, which is lower than RMME's 0.30% expense ratio.

Dividends

GMMF vs. RMME - Dividend Comparison

GMMF's dividend yield for the trailing twelve months is around 3.54%, more than RMME's 2.18% yield.

Position	TTM	2025
GMMF iShares Government Money Market ETF	3.54%	3.45%
RMME Rareview Government Money Market ETF	2.18%	0.26%

Frequently Asked Questions

Can I hold both GMMF and RMME in my portfolio?

GMMF and RMME have a correlation of 0.18, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, GMMF or RMME?

On fees, GMMF is cheaper at 0.20% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, GMMF or RMME?

GMMF is cheaper with a 0.20% expense ratio, compared with 0.30% for RMME.

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

GMMF has the higher dividend yield at 3.54%, compared with 2.18% for RMME.

What is the main difference between GMMF and RMME?

They also come from different issuers: iShares and Rareview. Their fees differ too: 0.20% for GMMF and 0.30% for RMME.