# State Street Prime Money Market ETF (MMK): Money Market Fund Facts & Distributions > Markdown mirror of https://www.dividenddata.com/funds/mmk for AI agents. Same live data as the HTML page, regenerated on the same refresh cycle. Not investment advice. - Issuer: SPDR · Asset class: Cash & Cash Equivalents - Strategy: Actively Managed · Inception: 2026-02-10 MMK seeks to maximize current income while maintaining capital preservation and liquidity by broadly investing in money market instruments. The actively managed fund employs its credit research team to assess the relative attractiveness of instruments based on the general interest rates and market supply/demand imbalances. The fund invests in US government securities (T-bills, notes, and bonds), USD-denominated certificates of deposit and time deposits from banks, US and non-US commercial paper, high-quality company obligations, asset-backed and mortgage-related securities, and repurchase a... ## Key Facts | Metric | Value | |---|---| | Price | $100.11 | | Expense Ratio | 0.18% | | Assets Under Management | $32.0M | | NAV | $100.06 (2026-11-04 close) | | Holdings Count | 45 | | Distribution Yield (TTM) | 2.62% | | Annual Distribution (TTM) | $2.62 /share | | Distribution Frequency | Monthly | | 52-Week Range | $99.99 – $100.35 | | Beta | -0.00 | ## Latest Distribution - Amount: $0.3188 /share - Ex-date: 2026-11-02 - Pay date: 2026-11-05 ## Frequently Asked Questions ### What does MMK invest in? MMK seeks to maximize current income while maintaining capital preservation and liquidity by broadly investing in money market instruments. The actively managed fund employs its credit research team to assess the relative attractiveness of instruments based on the general interest rates and market supply/demand imbalances. The fund invests in US government securities (T-bills, notes, and bonds), USD-denominated certificates of deposit and time deposits from banks, US and non-US commercial paper, high-quality company obligations, asset-backed and mortgage-related securities, and repurchase agreements. The fund invests in low-risk, high-quality debt with maturities of 397 days or less, targeting a dollar-weighted average maturity of no more than 60 days and a dollar-weighted average life of 120 days or less. The fund typically invests over 25% in bank obligations. As share price and NAV are expected to fluctuate, shares may be worth more or less than their original price when sold. ### What is the expense ratio of MMK? State Street Prime Money Market ETF (MMK) charges an expense ratio of 0.18%. This is the annual fee deducted from fund assets to cover management and operations. ### How big is MMK? State Street Prime Money Market ETF (MMK) manages $32.0M in total assets. AUM determines bid-ask liquidity and the fund's vulnerability to closure. Funds below ~$50M are at higher risk of liquidation. ### Is MMK actively managed or an index fund? MMK is actively managed: the manager selects holdings rather than tracking an index. Active funds typically charge higher expense ratios than index funds (MMK's is 0.18%) in exchange for the discretion to over- or under-weight positions. ### When was MMK launched? State Street Prime Money Market ETF (MMK) launched in February 2026 and is managed by SPDR. ### How has MMK performed? MMK's total return (price change plus reinvested distributions) is charted at the top of this page. Switch the price chart to Total Return and pick a 1-year, 3-year, 5-year, or 10-year window to read the compound annual growth rate (CAGR) over each horizon. ### Does MMK pay a dividend? State Street Prime Money Market ETF (MMK) currently distributes little or no income. Trailing-twelve-month yield is 2.62%. Investors looking for income should consider income-focused alternatives. See the Peers tab. ### How often does MMK pay dividends? State Street Prime Money Market ETF pays dividends Monthly. Each ex-dividend date, record date, and payment date is listed in the dividend history table on this page. ### What is MMK's dividend yield? MMK's trailing-twelve-month yield is 2.62%, calculated from the sum of dividends over the past year divided by the current price. ### When is MMK's next ex-dividend date? The most recently announced ex-dividend date for MMK was 2026-11-02. The next ex-date typically follows Monthly; once announced it appears at the top of the dividend history table on this page. ### How much will MMK's expense ratio cost me over 30 years? On a $10,000 investment compounding at 7% gross return, a 0.18% expense ratio quietly compounds against your balance every year. The Fee Compounding Forecast card above projects the dollar drag for any holding period and assumption you pick. The typical result for a 1.0% expense ratio on a 30-year hold is roughly 25% of the final balance lost to fees. ### How does MMK charge its expense ratio? The expense ratio is deducted in tiny daily slices from MMK's net asset value (NAV). You never see a bill. The price quoted on every exchange is already net of fees. There's no "fee day" to avoid; the cost is continuous and built into the trading price. ### Why does MMK cost more than a fund like VOO? MMK is actively managed (current expense ratio 0.18%). Active funds charge more than passive index trackers in exchange for the manager's discretion to over- or under-weight positions. The Cost Verdict card above tells you whether MMK's fee is competitive for the active-management cohort. ### Are there cheaper alternatives to MMK? The Lower-Fee Alternatives card above lists money market funds following the same investment strategy as MMK (0.18%) but at a lower expense ratio. Each row shows the fee gap, the peer's AUM as a liquidity sanity-check, and a direct link to that fund's analysis page. Cheaper price doesn't automatically mean better. Verify the peer holds what you actually want. ## More on Dividend Data - Overview (HTML): https://www.dividenddata.com/funds/mmk - Distribution history: https://www.dividenddata.com/funds/mmk/dividend - Holdings & diversification: https://www.dividenddata.com/funds/mmk/diversification - Fees & cheaper alternatives: https://www.dividenddata.com/funds/mmk/expenses - Peer comparison: https://www.dividenddata.com/funds/mmk/peers Data sourced from primary filings and market data providers; see https://www.dividenddata.com/methodology.