State Street Investment ManagementMoney MarketMMK · NYSE

State Street Prime Money Market ETF (MMK)

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Price: $100.34; —30 Oct 2026
Assets: $29.1M; Total net assets
Expense ratio: 0.18%; Category 0.00%
Yield: —; Trailing distributions

1Y return: —; Category 3.6%
3Y CAGR: —; Annualised
5Y CAGR: —; Annualised

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State Street Prime Money Market ETF

Calendar-year returns

Fund only: no comparison series covers this fund's history.

Risk statistics

Five years of daily closes. Risk-free rate 4% a year.

Standard deviation: —
Maximum drawdown: —
Sharpe ratio: —
Sortino ratio: —
Beta: —
Alpha: —
R²: —
Information ratio: —
Upside capture: —
Downside capture: —
Tracking error: —

Trailing returns compared with benchmark
Period	1M	3M	6M	YTD	1Y	3YCAGR	5YCAGR	10YCAGR	LaunchCAGR
ETF	+0.4%	+0.9%	+1.9%	—	—	—	—	—	+2.7%
Money Market average	0.3%	0.9%	1.8%	2.9%	3.6%	—	—	—	3.1%
Difference	0.0%	0.0%	+0.1%	—	—	—	—	—	-0.4%

Holdings

Allocation as last published by the fund.

Credit quality

Share of the bonds by rating.

US government4.1%

Asset mix

Cash94.5%
Bonds5.5%

ETF details

Issuer: State Street Investment Management
Category: Fixed Income · Money Market
Ticker: MMK
Exchange: NYSE
Inception: 11 Feb 2026 (0.7 years)
Structure: Exchange Traded Fund
Expense ratio: 0.18% (category 0.00%)
Holdings turnover: 0%
Distribution yield: —
Beta, 3 years: 0.00
Total net assets: $29.1M

Prices and returns as of 30 Oct 2026; total return with distributions reinvested, before brokerage and taxes. Not investment advice.

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