State Street Prime Money Market ETF (MMK) belongs to the Money Market category. Below you'll find alternative ETFs from the same category, ranked by key criteria, plus funds that investors commonly compare with MMK. Use the tables to find lower-cost options, better risk-adjusted returns, or a closer substitute for your current allocation.
Cheapest Alternatives to MMK
MMK charges 0.18% annually. There are 3 ETFs in the Money Market category with lower expense ratios, going as low as 0.15%.
| Symbol | Name | Expense Ratio | AUM | Inception | |
|---|---|---|---|---|---|
| Simplify Government Money Market ETF | 0.15% | 5.02B | Jul 2025 | MMK vs SBIL | |
| ProShares GENIUS Money Market ETF | 0.15% | 18.19B | Feb 2026 | MMK vs IQMM | |
| JPMorgan 100% U.S. Treasury Securities Money Marke... | 0.16% | 67.07M | Dec 2025 | MMK vs JMMF | |
| iShares Government Money Market ETF | 0.20% | — | Feb 2025 | MMK vs GMMF | |
| Texas Capital Government Money Market ETF | 0.20% | 62.65M | Sep 2024 | MMK vs MMKT |
Best Risk-Adjusted Alternatives to MMK
Among 7 ETFs in the Money Market category with risk / return rank data, the top risk-adjusted alternatives shown here go as high as 100.
| Symbol | Name | Risk / Return Rank | AUM | Inception | |
|---|---|---|---|---|---|
| iShares Government Money Market ETF | 100 | — | Feb 2025 | MMK vs GMMF | |
| iShares Prime Money Market ETF | 100 | 650.83M | Feb 2025 | MMK vs PMMF | |
| Schwab Government Money Market ETF | 100 | 806.19M | Jun 2025 | MMK vs SGVT | |
| Texas Capital Government Money Market ETF | 100 | 62.65M | Sep 2024 | MMK vs MMKT | |
| Simplify Government Money Market ETF | 100 | 5.02B | Jul 2025 | MMK vs SBIL |
Top Performing MMK Alternatives (YTD)
Among 9 ETFs in the Money Market category with YTD return data, the top-performing alternatives shown here go as high as 16.05%.
| Symbol | Name | YTD Return | AUM | Inception | |
|---|---|---|---|---|---|
| Leadershares Alphafactor Tactical Focused ETF | 16.05% | 61.78M | Oct 2020 | MMK vs LSAT | |
| iShares Prime Money Market ETF | 2.02% | 650.83M | Feb 2025 | MMK vs PMMF | |
| Simplify Government Money Market ETF | 2.00% | 5.02B | Jul 2025 | MMK vs SBIL | |
| iShares Government Money Market ETF | 1.93% | — | Feb 2025 | MMK vs GMMF | |
| Texas Capital Government Money Market ETF | 1.92% | 62.65M | Sep 2024 | MMK vs MMKT |
Lowest Volatility Alternatives to MMK
MMK has 0.17% 1-year volatility. No ETFs in the Money Market category have lower 1-year volatility; the lowest-volatility alternatives shown here go as low as 0.19%.
| Symbol | Name | Volatility 1Y | AUM | Inception | |
|---|---|---|---|---|---|
| iShares Prime Money Market ETF | 0.19% | 650.83M | Feb 2025 | MMK vs PMMF | |
| iShares Government Money Market ETF | 0.20% | — | Feb 2025 | MMK vs GMMF | |
| Schwab Government Money Market ETF | 0.22% | 806.19M | Jun 2025 | MMK vs SGVT | |
| Texas Capital Government Money Market ETF | 0.22% | 62.65M | Sep 2024 | MMK vs MMKT | |
| ProShares GENIUS Money Market ETF | 0.22% | 18.19B | Feb 2026 | MMK vs IQMM |
Lowest Drawdown Alternatives to MMK
Among 7 ETFs in the Money Market category with 1-year drawdown data, the lowest-drawdown alternatives shown here go as shallow as -0.01%.
| Symbol | Name | Max Drawdown 1Y | AUM | Inception | |
|---|---|---|---|---|---|
| iShares Government Money Market ETF | -0.01% | — | Feb 2025 | MMK vs GMMF | |
| Texas Capital Government Money Market ETF | -0.02% | 62.65M | Sep 2024 | MMK vs MMKT | |
| iShares Prime Money Market ETF | -0.02% | 650.83M | Feb 2025 | MMK vs PMMF | |
| Simplify Government Money Market ETF | -0.03% | 5.02B | Jul 2025 | MMK vs SBIL | |
| Schwab Government Money Market ETF | -0.03% | 806.19M | Jun 2025 | MMK vs SGVT |
Other ETFs from State Street
The 10 most viewed State Street ETFs shown here include SPY, GLD, XLK and span 10 categories. AUM among these funds goes as high as $790B.
| Symbol | Name | Category | Risk / Return Rank | YTD Return | AUM | Inception | |
|---|---|---|---|---|---|---|---|
| State Street SPDR S&P 500 ETF | S&P 500 | 55 | 8.83% | 790.12B | Jan 1993 | MMK vs SPY | |
| SPDR Gold Shares | Gold, Precious Metals | 25 | -6.26% | 128.30B | Nov 2004 | MMK vs GLD | |
| State Street Technology Select Sector SPDR ETF | Technology Equities | 57 | 24.25% | 115.62B | Dec 1998 | MMK vs XLK | |
| State Street SPDR Portfolio S&P 500 Growth ETF | S&P 500, Large Cap Growth Equities | 39 | 8.66% | 52.05B | Sep 2000 | MMK vs SPYG | |
| State Street SPDR Portfolio S&P 500 High Dividend ... | S&P 500, Dividend | 53 | 15.96% | 7.63B | Oct 2015 | MMK vs SPYD | |
| State Street SPDR Portfolio S&P 500 ETF | S&P 500 | 56 | 8.91% | 160.27B | Nov 2005 | MMK vs SPYM | |
| State Street Energy Select Sector SPDR ETF | Energy Equities | 71 | 34.64% | 37.76B | Dec 1998 | MMK vs XLE | |
| SPDR Gold MiniShares Trust | Gold, Precious Metals | 25 | -6.16% | 27.09B | Jun 2018 | MMK vs GLDM | |
| State Street Utilities Select Sector SPDR ETF | Utilities Equities | 31 | 9.65% | 23.64B | Dec 1998 | MMK vs XLU | |
| SPDR Bloomberg 1-3 Month T-Bill ETF | Government Bonds, Ultrashort Bond | 100 | 1.97% | 46.78B | May 2007 | MMK vs BIL |
Often Compared With MMK
Investors most often compare MMK with MUST, RMME. These 2 comparison targets span 1 categories, based on PortfoliosLab usage data.
| Symbol | Name | Category | Risk / Return Rank | YTD Return | AUM | Inception | |
|---|---|---|---|---|---|---|---|
| Columbia Multi-Sector Municipal Income ETF | Money Market | 38 | -0.34% | 591.94M | Oct 2018 | MMK vs MUST | |
| Rareview Government Money Market ETF | Money Market | — | 1.86% | 20.02M | Dec 2025 | MMK vs RMME |
Compare MMK with Any Fund or Stock
Compare MMK with any ETF, mutual fund, or stock using PortfoliosLab's comparison tool.
Pair MMK with funds that move differently
State Street Prime Money Market ETF alternatives help with substitution. Diversifiers are the next step when you want funds with lower historical correlation to MMK.
Explore MMK Diversifiers