SBIL vs. GMMF

Last updated Aug 1, 2026

SBIL (Simplify Government Money Market ETF) and GMMF (iShares Government Money Market ETF) are both Money Market funds. Both are actively managed. Over the past year, SBIL returned 3.85% vs 3.72% for GMMF. Their 0.13 correlation means their historical movements had little consistent relationship. SBIL charges 0.15%/yr vs 0.20%/yr for GMMF.

Performance

SBIL vs. GMMF - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Simplify Government Money Market ETF (SBIL) and iShares Government Money Market ETF (GMMF). 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 SBIL having a 2.09% return and GMMF slightly lower at 2.04%.

SBIL

• 1D: 0.02%
• 1M: 0.31%
• 6M: 1.75%
• YTD: 2.09%
• 1Y: 3.85%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 3.84%

GMMF

• 1D: 0.03%
• 1M: 0.27%
• 6M: 1.76%
• YTD: 2.04%
• 1Y: 3.72%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 3.89%

*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	$2.15M	$2.16M	$3.30M
SBIL Simplify Government Money Market ETF	$31.14M	$24.02M	$26.67M

SBIL vs. GMMF - Yearly Performance Comparison

	2026 (YTD)	2025
SBIL Simplify Government Money Market ETF	2.09%	1.88%
GMMF iShares Government Money Market ETF	2.04%	1.88%

Correlation

The correlation between SBIL and GMMF is 0.10, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.10
Correlation (All Time) Calculated using the full available price history since Jul 15, 2025	0.13

Return for Risk

SBIL vs. GMMF — Risk / Return Rank

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

SBIL

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

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

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.

SBIL vs. GMMF - Risk-Adjusted Trends Comparison

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

	SBIL	GMMF	Difference
Sharpe ratio: Return per unit of total volatility	15.08	18.81	-3.73
Sortino ratio: Return per unit of downside risk	58.38	139.62	-81.25
Omega ratio: Gain probability vs. loss probability	12.98	40.60	-27.63
Calmar ratio: Return relative to maximum drawdown	154.53	252.13	-97.60
Martin ratio: Return relative to average drawdown	868.15	2,218.66	-1,350.52

SBIL vs. GMMF - Sharpe Ratio Comparison

The current SBIL Sharpe Ratio is 15.08, which is comparable to the GMMF Sharpe Ratio of 18.81. The chart below compares the historical Sharpe Ratios of SBIL and GMMF, 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

SBIL vs. GMMF - Drawdown Comparison

The maximum SBIL drawdown since its inception was -0.03%, roughly equal to the maximum GMMF drawdown of -0.03%. Use the drawdown chart below to compare losses from any high point for SBIL and GMMF.

Drawdown Indicators

	SBIL	GMMF	Difference
Max Drawdown Largest peak-to-trough decline	-0.03%	-0.03%	0.00%
Max Drawdown (1Y) Largest decline over 1 year	-0.02%	-0.01%	-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%	0.00%	0.00%

Volatility

SBIL vs. GMMF - Volatility Comparison

Simplify Government Money Market ETF (SBIL) and iShares Government Money Market ETF (GMMF) have volatilities of 0.05% and 0.05%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SBIL	GMMF	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.05%	0.05%	0.00%
Volatility (6M) Calculated over the trailing 6-month period	0.18%	0.13%	+0.05%
Volatility (1Y) Calculated over the trailing 1-year period	0.26%	0.20%	+0.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.26%	0.24%	+0.02%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.26%	0.24%	+0.02%

SBIL vs. GMMF - Expense Ratio Comparison

SBIL has a 0.15% expense ratio, which is lower than GMMF's 0.20% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

SBIL vs. GMMF - Dividend Comparison

SBIL's dividend yield for the trailing twelve months is around 3.87%, which matches GMMF's 3.86% yield.

Position	TTM	2025
GMMF iShares Government Money Market ETF	3.54%	3.45%
SBIL Simplify Government Money Market ETF	3.87%	1.79%

Frequently Asked Questions

Can I hold both SBIL and GMMF in my portfolio?

SBIL and GMMF have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SBIL or GMMF?

GMMF has higher volatility (0.05%) compared to SBIL (0.05%). In terms of maximum drawdown, SBIL dropped -0.03% vs GMMF's -0.03%.

Which ETF is better, SBIL or GMMF?

On 1-year performance, SBIL leads with 3.85% vs 3.72% for GMMF. On fees, SBIL is cheaper at 0.15% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, SBIL or GMMF?

Over the 1-year period, SBIL has performed better with a 3.85% return vs 3.72%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, SBIL or GMMF?

SBIL is cheaper with a 0.15% expense ratio, compared with 0.20% for GMMF.

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

SBIL has the higher dividend yield at 3.87%, compared with 3.54% for GMMF.

What is the main difference between SBIL and GMMF?

They also come from different issuers: Simplify and iShares. Their fees differ too: 0.15% for SBIL and 0.20% for GMMF.

Which has better risk-adjusted returns?

GMMF currently has the higher Sharpe Ratio (18.81 vs 15.08), 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.