ETF Evaluator:
iShares Government Money Market ETF ()
Follow This ETF
(as of Aug 26)
Best Performing in Money Market-Taxable Over the Last Year
| 3.8% | Simplify Government Money Market ETF (SBIL) |
| 3.7% | Texas Capital Government Mny Mkt ETF (MMKT) |
| 3.7% | Money Market-Taxable () |
| 3.7% | iShares Government Money Market ETF (GMMF) |
| 3.7% | Schwab Government Money Market ETF (SGVT) |
Risk
Index
Risk
Index
ETF Details
iShares Government Money Market ETF Overview
iShares Government Money Market ETF (GMMF) is an actively managed Money Market Money Market-Taxable exchange-traded fund (ETF). BlackRock launched the ETF in 2025.
The investment seeks current income as is consistent with liquidity and stability of principal.
The fund invests at least 99.5% of its total assets in cash, U.S. Treasury bills, notes and other obligations issued or guaranteed as to principal and interest by the U.S. government, its agencies or instrumentalities. It invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in U.S. Treasury bills, notes and other obligations issued or guaranteed as to principal and interest by the U.S. government, its agencies or instrumentalities.
About iShares Government Money Market ETF (GMMF)
There are 1 members of the management team with an average tenure of 1.48 years: Management Team (2025). Management tenure is more important for actively managed ETFs than passive index ETFs.
iShares Government Money Market ETF has 144 securities in its portfolio. The top 10 holdings constitute 60.7% of the ETF’s assets. The ETF meets the SEC requirement of being classified as a diversified fund. The ETF is not considered to have an ESG focus with its investment selection and management.
iShares Government Money Market ETF is part of the Capital Preservation global asset class and is within the Money Market ETF group. iShares Government Money Market ETF has 0.0% of its portfolio invested in foreign issues. The overall assets allocated to domestic stock is 0.0% There is 0.0% allocated to foreign stock, and 0.0% is allocated to preferred stocks. The bond allocation as a percentage of total assets is 27.4% (27.4% domestic bond, 0.0% foreign bond and 0.0% convertible bond). iShares Government Money Market ETF has 72.6% of the portfolio in cash.
Assets Under Management
The fund has $185 million in total assets, which is below the $3 billion average for the Money Market-Taxable category. Normally, lower assets under management translates to higher average expense ratios, and greater total assets are desired. However, for some investment categories, such as small-cap investing, it may be difficult for the manager to fully employ the desired active strategy if assets grow too large or too quickly.
GMMF Performance and Fees
The expense ratio measures how much of a fund’s assets are used for administrative expenses and operating expenses, including adviser fees and fees for the transfer agent and custodial services. The iShares Government Money Market ETF expense ratio is below average compared to funds in the Money Market-Taxable category. iShares Government Money Market ETF has an expense ratio of 0.20%, which is 3% lower than its category average, making the fund expense ratio grade a C. While it is difficult to predict returns, it is known that high annual expense ratios reduce your rate of return, and excessive fees are difficult to overcome. Active management normally comes with higher expense ratios than passive index management. Certain investment categories such as small company and foreign also normally have higher expense ratios. It is best to compare fund expense ratios against the category averages for meaningful assessments.
High portfolio turnover can translate to higher expenses and lower aftertax returns. iShares Government Money Market ETF has a portfolio turnover rate of 0%, which indicates that it holds its assets around /years. By way of comparison, the average portfolio turnover is 13% for the Money Market-Taxable category.
Recently, in the month of July 2026, iShares Government Money Market ETF returned 0.3%, which earned it a grade of F, as the Money Market-Taxable category had an average return of 0.3%. The letter grades of A, B, C, D and F are based upon relative rankings within the investment category. A grade of A, for example, would indicate that the return is in the highest 20% for that time period compared to all ETFs in that category.
iShares Government Money Market ETF has a trailing yield of 3.79%, which is above the 3.66% category average.
The fund normally distributes its income monthly and its capital gains annually.
It’s natural to seek the best-performing investments, but you must consider the relationship between risk and return and the impact of costs and taxes on your realized returns.
iShares Government Money Market ETF Grades
Year to date, the ETF has returned 2.0%, 0.0 percentage points worse than the category, which translates into a grade of F. The fund has returned 3.7% over the past year (grade of D).
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GMMF Trailing NAV Total Returns Data as of 7/31/26
| Last Month |
Last Quarter |
Ann'l. 1Yr |
Ann'l. 3Yr |
Ann'l. 5Yr |
Ann'l. 10Yr |
|
| GMMF Return (NAV) | 0.3% | 0.8% | 3.7% | na | na | na |
| GMMF Return (Price) | 0.2% | 0.8% | 3.7% | na | na | na |
| NAV +/- Price Return | 0.008% | -0.009% | -0.002% | na | na | na |
| Money Market-Taxable Avg | 0.3% | 0.9% | 3.7% | na | na | na |
| GMMF Grade (NAV) | F | F | D | na | na | na |
| +/- Category (NAV) | -0.0% | -0.0% | -0.0% | na | na | na |
| GMMF Tax-Cost Ratio | na | na | 1.5% | na | na | na |
GMMF Annual NAV Total ReturnsData as of 7/31/26
| 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | |
| GMMF Return (NAV) | 2.0% | na | na | na | na | na | na | na | na | na | na |
| GMMF Return (Price) | 2.0% | na | na | na | na | na | na | na | na | na | na |
| NAV +/- Price Ret | 0.003% | na | na | na | na | na | na | na | na | na | na |
| Money Market-Taxable Avg | 2.0% | 4.1% | na | na | na | na | na | na | na | na | na |
| GMMF Grade (NAV) | F | na | na | na | na | na | na | na | na | na | na |
| +/- Category | -0.0% | na | na | na | na | na | na | na | na | na | na |
| Risk Measures | |
| Beta: | na |
| R-Squared: | na |
| Standard Deviation: | na |
| Category Risk Index: | na |
| Category Risk Rating: | |
| Total Risk Index: | na |
| Total Risk Rating: | |
| Portfolio Characteristics | |
| Yield: | 3.8% |
| Total Assets: | $ 186 Mil |
| Share Class Assets: | $ 186 Mil |
| Turnover: | na |
| Expense Ratio: | 0.20% |
| Index Fund: | No |
| Index Tracked: | N/A |
| Index Weighting: | 100% |
| Leveraged: | No |
| Socially Responsible Fund: | No |
| Capital Gains Distribution Frequency: | Annually |
| Income Distribution Frequency: | Monthly |
Management Team
| Number of Managers: 1 | |||
| Longest Tenure: 1.5 years | |||
| Average Tenure: 1.5 years | |||
| Managers (Year): Team Management (2025) | |||
Portfolio Composition (as of 7/31/26)
| # of Holdings: | 144 |
| % in Top 10 Holdings: | 60.7% |
| Fund is Non-Diversified: | No |
| % in Foreign Issues: | 0.0% |
Portfolio Allocation |
|
| Domestic Stock: | 0.0% |
| Foreign Stock: | 0.0% |
| Preferred Stock: | 0.0% |
| Domestic Bond: | 27.4% |
| Foreign Bond: | 0.0% |
| Convertible Bond: | 0.0% |
| Other: | 0.0% |
| Cash: | 72.6% |
Purchase Information
| Legal Structure: | Open Ended Investment Company |
| Fund Family: | BlackRock |
| Phone Number: | 800-474-2737 |
| Website: | www.blackrock.com |
| Inception Date: | February 4, 2025 |
Expenses and Fees
| Expense Ratio (%): | 0.20% (Rating: Below Avg) |
| Category Average Expense Ratio (%): | 0.21% |
