State StreetUltrashort BondMMK · NYSE

State Street Prime Money Market ETF (MMK)

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Price: $100.13; —11 Sept 2026
Assets: —; Total net assets
Expense ratio: 0.18%; Category 0.00%
Yield: —; Trailing distributions

1Y return: —; Category 3.9%
3Y CAGR: —; Category 5.1%
5Y CAGR: —; Category 3.9%

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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	+0.3%	+0.9%	+1.8%	—	—	—	—	—	+2.1%
Ultrashort Bond average	0.3%	0.8%	2.0%	2.6%	3.9%	5.1%	3.9%	3.0%	3.4%
Difference	+0.1%	+0.1%	-0.1%	—	—	—	—	—	-1.3%

Holdings

Allocation as last published by the fund.

Credit quality

Share of the bonds by rating.

US government6.5%

Asset mix

Cash94.6%
Bonds5.4%

ETF details

Issuer: State Street
Category: Fixed Income · Ultrashort Bond
Ticker: MMK
Exchange: NYSE
Inception: 12 Feb 2026 (0.6 years)
Structure: Exchange Traded Fund
Expense ratio: 0.18% (category 0.00%)
Holdings turnover: 0%
Distribution yield: —
Total net assets: —

Prices and returns as of 11 Sept 2026; total return with distributions reinvested, before brokerage and taxes. Not investment advice.

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