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MMK State Street® Prime Money Market ETF

NAV

NAV

The market value of a mutual fund's or ETFs total assets, minus liabilities, divided by the number of shares outstanding.

$100.08
as of Jul 09 2026
Base Currency
USD
Assets Under Management
$28.02 M
as of Jul 09 2026
Gross Expense Ratio

Gross Expense Ratio

The fund's total annual operating expense ratio. It is gross of any fee waivers or expense reimbursements. It can be found in the fund's most recent prospectus.

0.18%
WAM

WAM

WAM (Weighted Average Maturity) is a measure of a fund's sensitivity to interest rate movements utilizing the interest-rate reset date and not a security's stated final maturity.

43
as of Jul 10 2026
WAL

WAL

WAL (Weighted Average Life) is a measure of a fund's sensitivity to credit spreads or liquidity conditions utilizing a security's stated final maturity date or the date of the next demand feature. WAL does not reflect changes in the interest rate reset date.

80
as of Jul 10 2026

Key Features

  • The State Street® Prime Money Market ETF (MMK) seeks to maximize current income, to the extent consistent with preservation of capital and liquidity
  • MMK is actively managed by State Street Investment Management’s Cash Management Team, and is supported by a dedicated short-term credit research team. The Fund invests in money market instruments based on SSGA Funds Management, Inc.’s assessment of the relative attractiveness of such instruments based on the general level of interest rates, as well as imbalances of supply and demand in the market
  • MMK will qualify as a money market fund, pursuant to Rule 2a-7 under the Investment Company Act of 1940, as amended to date

About this Benchmark

ICE BofA SOFR Overnight Rate Index tracks the performance of a synthetic asset paying SOFR to a stated maturity. The index is based on the assumed purchase at par of a synthetic instrument having exactly its stated maturity and with a coupon equal to that day’s fixing rate. That issue is assumed to be sold the following business day (priced at a yield equal to the current day fixing rate) and rolled into a new instrument.

Fund Information as of Jul 11 2026

Benchmark ICE BofA SOFR Overnight Rate Index
Inception Date Feb 10 2026
Options Available No
Gross Expense Ratio

Gross Expense Ratio

The fund's total annual operating expense ratio. It is gross of any fee waivers or expense reimbursements. It can be found in the fund's most recent prospectus.

0.18%
Net Expense Ratio 0.18%
Base Currency USD
Administrator State Street Global Advisors Funds Management Inc.
Investment Manager SSGA Funds Management, Inc.
Management Team Fixed Income, Currency & Cash Investments Team
Distributor State Street Global Advisors Funds Distributors, LLC
Distribution Frequency Monthly

Listing Information as of Jul 11 2026

Exchange Listing Date Trading Currency Ticker CUSIP ISIN
New York Stock Exchange LLC Feb 12 2026 USD MMK 85749T285 US85749T2859

Yields as of Jul 10 2026

1 Day Yield 3.62%
1 Day Yield (Unsubsidized) 3.62%
7 Day SEC Yield 3.62%
7 Day SEC Yield (Unsubsidized) 3.62%
30 Day Yield 3.63%
30 Day Yield (Unsubsidized) 3.63%

Yield quotations more closely reflect the current earnings of money market funds than the total return quotations.

Fund Market Price as of Jul 09 2026

Bid/Ask Midpoint

Bid/Ask Mid Point

(Also known as Mid Price) The price between the best price of the sellers for a trading unit of a given security and the best price of the buyer of a trading unit of a given security.

$100.10
Closing Price

Closing Price

Represents the ETF’s official closing price as reported by the Primary Listing Exchange.

$100.10
Day High $100.10
Day Low $100.09
Exchange Volume (Shares)

Exchange Volume (shares)

Represents the volume of shares traded on the ETF's primary exchange throughout the previous business day.

1,001
Premium/Discount

Premium/Discount to NAV

Shows the comparison of the daily indicative net asset value (INAV) and the Midpoint of the closing bid/ask for each of the funds calculated as ((4PM Bid/Ask Midpoint - 4PM INAV) / 4PM INAV * 100).

0.01%
30-Day Median Bid/Ask Spread

The median bid-ask spread is calculated by identifying national best bid and national best offer ("NBBO") for each Fund as of the end of each 10 second interval during each trading day of the last 30 calendar days and dividing the difference between each such bid and offer by the midpoint of the NBBO. The median of those values is identified and posted on each business day.

0.01%

Premium Discount to NAV Graph and Summary

The line graph and table below show historical information about the fund’s premium and discount over certain periods. The vertical axis of the line graph shows the premium/discount expressed as a percentage of NAV. The horizontal axis indicates the date at which the premium/discount occurred. The table shows the number of trading days in which the fund traded at a premium or at a discount to NAV.

Number of Days Summary

Calendar Year 2025 First Quarter of 2026 Second Quarter of 2026
Days Traded at Premium

Number of days the ETF 4PM Bid/Ask was above the NAV.

- 16 36
Days Traded at Discount

Number of days the ETF 4PM Bid/Ask was below the NAV.

- 17 26

Because ETFs trade like stocks at current market prices, shareholders may pay more than a fund’s NAV when purchasing fund shares and may receive less than a fund’s NAV when selling fund shares.

Before investing in a fund, consider its investment objectives, risks, charges, and expenses. A prospectus (and/or summary prospectus) containing this and other information is available here or by calling 1-866-787-2257. Read it carefully.

Fund Net Cash Amount as of Jul 09 2026

Net Cash Amount $28,027,462.00

Fund Net Asset Value

Excludes trade date activity.

as of Jul 09 2026

NAV

NAV

The market value of a mutual fund's or ETFs total assets, minus liabilities, divided by the number of shares outstanding.

$100.08
Shares Outstanding 280,000.00
Assets Under Management $28.02 M

Historical NAV

Performance quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, so you may have a gain or loss when shares are sold. Current performance may be higher or lower than that quoted.

Liquid Assets

Daily Liquid Assets are defined as cash, direct obligations of the United States Government, securities that will mature (or are subject to a demand feature that is exercisable and payable) within one business day, or proceeds of pending sales of portfolio securities due within one business day.

Weekly Liquid Assets are defined as cash, direct obligations of the United States Government, certain securities issued by entities acting as an instrumentality of (and controlled or supervised by) the United States Government subject to conditions specified in Section 270.2a7 of the Investment Company Act of 1940, as amended, securities that will mature (or are subject to a demand feature that is exercisable and payable) within five business days, or proceeds of pending sales of portfolio securities due within five business days.

Net Inflows/Outflows

The Daily Net Inflows/Outflows chart is designed to show the variability of the Fund's daily cash flows. The net inflows or outflows of the Fund are calculated by taking the daily total new Fund share purchases (including exchanges made into the Fund) and subtracting the daily total Fund share redemptions (including exchanges made out of the Fund). The existence of any daily inflows or outflows will not necessarily have a direct or indirect correlation to the Fund's investment performance.

The Monthly Net Inflows/Outflows chart is designed to show the variability of the Fund's monthly cash flows. The net inflows or outflows of the Fund are calculated by taking the monthly total new Fund share purchases (including exchanges made into the Fund) and subtracting the monthly total Fund share redemptions (including exchanges made out of the Fund). The existence of any monthly inflows or outflows will not necessarily have a direct or indirect correlation to the Fund's investment performance.

Fund Performance

  • Fund Inception Date: Feb 10 2026

as of Jun 30 2026

As Of 1 Month QTD YTD 1 Year 3 Year 5 Year 10 Year Since Inception
Feb 10 2026
Fund Before Tax
NAV Jun 30 2026 0.30% 0.91% - - - - - 1.38%
Market Value Jun 30 2026 0.27% 0.91% - - - - - 1.38%
Benchmark
ICE BofA SOFR Overnight Rate Index
Jun 30 2026 0.30% 0.92% - - - - - 1.42%
Fund After Tax
Return after Taxes on Distributions Jun 30 2026 0.17% 0.54% - - - - - 0.93%
Return after Taxes on Distributions and Sale of Fund Shares Jun 30 2026 0.18% 0.54% - - - - - 0.81%
Benchmark
ICE BofA SOFR Overnight Rate Index
Jun 30 2026 0.30% 0.92% - - - - - 1.42%

as of Jun 30 2026

As Of 1 Month QTD YTD 1 Year 3 Year 5 Year 10 Year Since Inception
Feb 10 2026
Fund Before Tax
NAV Jun 30 2026 0.30% 0.91% - - - - - 1.38%
Market Value Jun 30 2026 0.27% 0.91% - - - - - 1.38%
Benchmark
ICE BofA SOFR Overnight Rate Index
Jun 30 2026 0.30% 0.92% - - - - - 1.42%
Fund After Tax
Return after Taxes on Distributions Jun 30 2026 0.17% 0.54% - - - - - 0.93%
Return after Taxes on Distributions and Sale of Fund Shares Jun 30 2026 0.18% 0.54% - - - - - 0.81%
Benchmark
ICE BofA SOFR Overnight Rate Index
Jun 30 2026 0.30% 0.92% - - - - - 1.42%

Performance data quoted represents past performance and is no guarantee of future results. Current performance may be lower or higher than the performance data quoted. Investment return and principal value will fluctuate so that the investor's shares, when redeemed, may be worth more or less than the original cost. All results assume the reinvestment of dividends and capital gains. Performance is shown net of any fees. Periods of less than one year are not annualized.

The market price used to calculate the Market Value return is the midpoint between the highest bid and the lowest offer on the exchange on which the shares of the Fund are listed for trading, as of the time that the Fund's NAV is calculated. If you trade your shares at another time, your return may differ.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates, and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

Index returns are unmanaged and do not reflect the deduction of any fees or expenses. Index returns reflect all items of income, gain/loss, and the reinvestment of dividends and other income as applicable. Performance of an index is not illustrative of any particular investment. It is not possible to invest directly in an index.

Gross Expense Ratio: 0.18%

Net Expense Ratio: 0.18%

Top Holdings

Subject to change.

Fund Top Holdings as of Jul 09 2026

Name Market Value CUSIP Weight
US DOLLAR 7,420,477.20 999USDZ92 26.48%
VERTO CAP I COMPARTMENT 07/26 ZCP 599,566.03 92541DGG3 2.14%
CANADIAN IMPERIAL BK 07/26 FIXED 3.64 499,999.85 13606DXJ6 1.78%
ANGLESEA FDG PLC + ANG 499,643.20 0347M3GG3 1.78%
BARCLAYS BANK UK 499,642.50 06744RGG7 1.78%
TREASURY BILL 496,191.04 912797UH8 1.77%
MACKINAC FUNDING 397,684.00 55458FJ16 1.42%
HSBC BANK PLC 350,173.36 40433FWB1 1.25%
NORDEA BANK ABP 350,168.60 65558WRL4 1.25%
BARCLAYS BK PLC NEW YORK BRH I 09/26 FIXED 4.1 350,087.92 06745GJE2 1.25%

Sector Allocation

Fund Sector Breakdown as of Jun 30 2026

Sector Weight
Financial Company Commercial Paper 25.35%
Certificate of Deposit 15.89%
Treasury Repurchase Agreement 14.79%
Asset Backed Commercial Paper 14.55%
Other Repurchase Agreement 10.54%
Government Agency Repurchase Agreement 7.84%
Treasury Debt 6.42%
Non-Negotiable Time Deposit 3.88%
Other Instrument 0.74%

Maturity Ladder

Fund Maturity Ladder as of Jun 30 2026

Name Weight
Overnight (1 Day) 33.55%
2 - 30 Days 12.01%
31 - 60 Days 13.08%
61 - 90 Days 8.10%
Over 90 Days 33.26%

Purchase Information

Buying and Selling ETFs

ETFs are flexible and easy to trade. Investors buy and sell them like stocks, typically through a brokerage account. Investors can also employ traditional stock trading techniques; including stop orders, limit orders, margin purchases, and short sales using ETFs. They are listed on major US Stock Exchanges.

ETFs are subject to risk similar to those of stocks including those regarding short-selling and margin account maintenance.

Ordinary brokerage commissions apply.

In general, ETFs can be expected to move up or down in value with the value of the applicable index. Although ETF shares may be bought and sold on the exchange through any brokerage account, ETF shares are not individually redeemable from the Fund. Investors may acquire ETFs and tender them for redemption through the Fund in Creation Unit Aggregations only. Please see the prospectus for more details.


Unless otherwise noted all information contained herein is that of the State Street® Prime Money Market ETF.

Holdings and sectors shown are as of the date indicated and are subject to change. This information should not be considered a recommendation to invest in a particular sector or to buy or sell any security shown. It is not known whether the sectors or securities shown will be profitable in the future.

As with all stocks, you may be required to deposit more money or securities into your margin account if the equity, including the amount attributable to your ETF shares, declines.

“ICE Data” and the “ICE BofA SOFR Overnight Rate Index” (the “Index”) are trademarks of ICE Data Indices, LLC or its affiliates, and have been licensed for use by SSGA. ICE Data has not passed on the legality or suitability of, or the accuracy or adequacy of descriptions and disclosures relating to, the Product, nor makes any representation or warranty, express or implied, to the owners of the licensee’s products or any member of the public regarding the licensee’s products or the advisability of investing in the licensees products, particularly the ability of the Index to track performance of any market or strategy. ICE DATA DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE INDEX OR ANY DATA INCLUDED THEREIN AND ICE DATA SHALL HAVE NO LIABILITY FOR ANY ERRORS, OMISSIONS, UNAVAILABILITY, OR INTERRUPTIONS THEREIN.