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FR952JMUII943900002025Minus07Minus01CTIMember2025-06-300001094885ssga:C000029566Memberssga:FICCUBBIPARTYREPOFR944DQXII344000002025Minus07Minus01CTIMember2025-06-300001094885ssga:C000029566Memberssga:USTreasuryBillsFR912797RA700100002026Minus01Minus02CTIMember2025-06-300001094885ssga:C000029566Memberssga:USTreasuryBillsFR912797QJ900100002025Minus08Minus12CTIMember2025-06-300001094885ssga:C000029566Memberssga:JPMORGANSECLLCTPRAFR930PNJ00443900002025Minus07Minus01CTIMember2025-06-300001094885ssga:C000029566Memberssga:USTreasuryBillsFR912797PN100100002025Minus08Minus14CTIMember2025-06-300001094885ssga:C000029566Memberssga:JPMBOSCAFR932KXR00445500002025Minus10Minus24CTIMember2025-06-30iso4217:USDxbrli:sharesiso4217:USDxbrli:sharesxbrli:pureutr:Dssga:Holding
 
 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

 

FORM N-CSR

 

 

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number: 811-09599

 

 

STATE STREET MASTER FUNDS

(Exact name of registrant as specified in charter)

 

 

One Iron Street, Boston, Massachusetts 02210

(Address of principal executive offices) (Zip code)

 

 

 

(Name and Address of Agent for Service)   Copy to:

Andrew J. DeLorme, Esq.

Chief Legal Officer

c/o SSGA Funds Management, Inc.

One Iron Street

Boston, Massachusetts 02210

 

Adam M. Schlichtmann, Esq.

Ropes & Gray LLP

Prudential Tower, 800 Boylston Street

Boston, Massachusetts 02199-3600

 

 

Registrant’s telephone number, including area code: (617) 664-3920

Date of fiscal year end: December 31

Date of reporting period: June 30, 2025

 

 
 


Item 1. Report to Stockholders.

(a) The Report to Shareholders is attached herewith.

Image

State Street International Developed Equity Index Portfolio

 

Semi-Annual Shareholder Report

June 30, 2025 

This semi-annual shareholder report contains important information about the State Street International Developed Equity Index Portfolio (the "Fund") for the period of January 1, 2025 through June 30, 2025. You can request additional information about the Fund by contacting us at 1-800-647-7327. 

What were the Fund costs for the last six months? (based on a hypothetical $10,000 Investment)

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
State Street International Developed Equity Index Portfolio
$8
0.14%Footnote Reference*
Footnote Description
Footnote*
Annualized.

Key Fund Statistics as of 6/30/2025

  • Total Net Assets$3,754,968,039
  • Number of Portfolio Holdings699
  • Portfolio Turnover Rate5%

 

What did the Fund invest in as of 6/30/2025? (as a percentage of total net assets)

Top Ten Countries

Country
%
Japan
21.5%
United Kingdom
11.2%
Germany
10.2%
United States
10.0%
France
9.4%
Australia
6.8%
Switzerland
4.9%
Netherlands
4.2%
Spain
3.1%
Italy
3.1%

Top Ten Holdings

Holdings
%
SAP SE
1.7%
ASML Holding NV
1.6%
Nestle SA
1.4%
Roche Holding AG
1.3%
Novartis AG
1.2%
Novo Nordisk AS, Class B
1.2%
AstraZeneca PLC
1.1%
HSBC Holdings PLC
1.1%
Shell PLC
1.1%
Commonwealth Bank of Australia
1.1%

 

Availability of Additional Information

For additional information about the Fund, including its Prospectus, Statement of Additional Information, financial statements, holdings and proxy information please contact us at 1-800-647-7327.

 

Image

State Street Treasury Money Market Portfolio

Semi-Annual Shareholder Report

June 30, 2025 

This semi-annual shareholder report contains important information about the State Street Treasury Money Market Portfolio (the "Fund") for the period of January 1, 2025 through June 30, 2025. You can request additional information about the Fund by contacting us at 1-866-392-0869. 

What were the Fund costs for the last six months? (based on a hypothetical $10,000 Investment)

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
State Street Treasury Money Market Portfolio
$3
0.06%Footnote Reference*
Footnote Description
Footnote*
Annualized.

Key Fund Statistics as of 6/30/2025

  • Total Net Assets$12,554,275,695
  • Number of Portfolio Holdings67

 

What did the Fund invest in as of 6/30/2025? (as a percentage of total net assets)

Top Security Types

Asset
%
Treasury Debt
101.2%

Top Ten Holdings

Holdings
%
U.S. Treasury Inflation-Indexed Notes, 1.08%, due 07/15/25
7.4%
U.S. Treasury Bills, 4.18%, due 07/17/25
4.5%
U.S. Treasury Bills, 4.10%, due 09/18/25
4.4%
U.S. Treasury Bills, 4.22%, due 07/03/25
4.4%
U.S. Treasury Bills, 4.19%, due 08/12/25
4.1%
U.S. Treasury Bills, 4.13%, due 09/04/25
4.1%
U.S. Treasury Bills, 4.19%, due 07/22/25
4.1%
U.S. Treasury Floating Rate Notes, 4.40%, due 07/31/25
3.9%
U.S. Treasury Bills, 4.15%, due 07/08/25
3.8%
U.S. Treasury Floating Rate Notes, 4.46%, due 07/31/26
3.6%

 

Availability of Additional Information

For additional information about the Fund, including its Prospectus, Statement of Additional Information, financial statements, holdings and proxy information please contact us at 1-866-392-0869.

Image

State Street Treasury Plus Money Market Portfolio

Semi-Annual Shareholder Report

June 30, 2025 

This semi-annual shareholder report contains important information about the State Street Treasury Plus Money Market Portfolio (the "Fund") for the period of January 1, 2025 through June 30, 2025. You can request additional information about the Fund by contacting us at 1-866-392-0869. 

What were the Fund costs for the last six months? (based on a hypothetical $10,000 Investment)

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
State Street Treasury Plus Money Market Portfolio
$3
0.06%Footnote Reference*
Footnote Description
Footnote*
Annualized.

Key Fund Statistics as of 6/30/2025

  • Total Net Assets$59,969,978,016
  • Number of Portfolio Holdings100

 

What did the Fund invest in as of 6/30/2025? (as a percentage of total net assets)

Top Security Types

Asset
%
Treasury Debt
55.0%
Treasury Repurchase Agreements
39.3%

Top Ten Holdings

Holdings
%
FICCRP TRI PARTY REPO A, 4.39%, due 07/01/25
4.2%
FICCBA TRI PARTY REPO A, 4.40%, due 07/01/25
3.8%
JP MORGAN SEC LLC TPR A, 4.39%, due 07/01/25
3.7%
FICCUB BI PARTY REPO, 4.40%, due 07/01/25
3.3%
FICCJP TRI PARTY REPO A, 4.39%, due 07/01/25
3.3%
U.S. Treasury Floating Rate Notes, 4.38%, due 01/31/27
3.3%
U.S. Treasury Floating Rate Notes, 4.49%, due 10/31/26
3.0%
U.S. Treasury Bills, 4.10%, due 01/02/26
3.0%
U.S. Treasury Bills, 4.20%, due 08/12/25
2.9%
U.S. Treasury Bills, 4.09%, due 11/06/25
2.0%

 

Availability of Additional Information

For additional information about the Fund, including its Prospectus, Statement of Additional Information, financial statements, holdings and proxy information please contact us at 1-866-392-0869.

Image

State Street U.S. Government Money Market Portfolio

Semi-Annual Shareholder Report

June 30, 2025 

This semi-annual shareholder report contains important information about the State Street U.S. Government Money Market Portfolio (the "Fund") for the period of January 1, 2025 through June 30, 2025. You can request additional information about the Fund by contacting us at 1-866-392-0869. 

What were the Fund costs for the last six months? (based on a hypothetical $10,000 Investment)

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
State Street U.S. Government Money Market Portfolio
$3
0.06%Footnote Reference*
Footnote Description
Footnote*
Annualized.

Key Fund Statistics as of 6/30/2025

  • Total Net Assets$171,174,726,708
  • Number of Portfolio Holdings187

 

What did the Fund invest in as of 6/30/2025? (as a percentage of total net assets)

Top Security Types

Asset
%
Treasury Debt
45.8%
Treasury Repurchase Agreements
21.6%
Government Agency Repurchase Agreements
17.7%
Government Agency Debt
11.7%

Top Ten Holdings

Holdings
%
FICCBA TRI PARTY REPO A, 4.40%, due 09/02/25
3.9%
JP MORGAN SEC LLC TPR D TRI PARTY REPO D, 4.40%, due 07/01/25
3.7%
FICCMS TRI PARTY REPO D, 4.39%, due 07/01/25
3.5%
FICCJP TRI PARTY REPO A, 4.39%, due 07/01/25
3.5%
FICCUB BI PARTY REPO, 4.40%, due 07/01/25
3.5%
U.S. Treasury Bills, 4.10%, due 01/02/26
3.2%
U.S. Treasury Bills, 4.20%, due 08/12/25
3.1%
JP MORGAN SEC LLC TPR A, 4.39%, due 07/01/25
2.5%
U.S. Treasury Bills, 4.17%, due 08/14/25
1.9%
JPMBOS CA, 4.55%, due 10/24/25
1.9%

 

Availability of Additional Information

For additional information about the Fund, including its Prospectus, Statement of Additional Information, financial statements, holdings and proxy information please contact us at 1-866-392-0869.


(b) Not Applicable to the Registrant.

Item 2. Code of Ethics.

Not applicable to this filing.

Item 3. Audit Committee Financial Expert.

Not applicable to this filing.

Item 4. Principal Accountant Fees and Services.

Not applicable to this filing.

Item 5. Audit Committee of Listed Registrants.

Not applicable to the Registrant.

Item 6. Investments.

(a) Schedules of Investments are included as a part of the Financial Statements filed under Item 7(a) of this Form N-CSR.

(b) Not applicable to the Registrant.

Item 7. Financial Statements and Financial Highlights for Open-End Management Investment Companies

(a) The Registrant’s Financial Statements are attached herewith.

(b) The Registrant’s Financial Highlights are included as part of the Financial Statements filed under Item 7(a) of this Form.


Table of Contents
Semi-Annual Financial Statements and Other Information
June 30, 2025
State Street Master Funds
State Street U.S. Government Money Market Portfolio
The information contained in this report is intended for the general information of shareholders of the Portfolio and shareholders of any fund invested in the Portfolio. Interests in the Portfolio are offered solely to eligible investors in private placement transactions that do not involve any “public offering” within the meaning of Section 4(a)(2) of the 1933 Act. This report is not authorized for distribution (i) to prospective investors in any fund invested in the Portfolio unless preceded or accompanied by a current offering document for such fund or (ii) to prospective eligible investors in the Portfolio unless preceded or accompanied by a current offering document of the Portfolio. Eligible investors in the Portfolio may obtain a current Portfolio offering document by calling 1-866-392-0869. Please read the offering document carefully before investing in the Portfolio.

Table of Contents

TABLE OF CONTENTS (Unaudited)

1

12

13

14

15

16

20
Changes in and Disagreements with Accountants for Open-End Management Investment Companies (N-CSR Item 8) - Not Applicable
Proxy Disclosures for  Open-End Management Investment Companies (N-CSR Item 9) - Not Applicable
Remuneration Paid to Directors, Officers, and Others of Open-End Management Investment Companies (N-CSR Item 10) - Please see Statement of Operations in the Financial Statements under Item 7 above

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
GOVERNMENT AGENCY DEBT—11.7%                    
Federal Farm Credit Banks Funding Corp., Fed Funds Rate + 0.05% (a)

  4.380%   07/01/2025   09/17/2026   $85,600,000   $85,600,000
Federal Farm Credit Banks Funding Corp., 3 mo. Treasury money market yield + 0.12% (a)

  4.401%   07/01/2025   11/24/2026   250,000,000   250,000,000
Federal Farm Credit Banks Funding Corp., 3 mo. Treasury money market yield + 0.12% (a)

  4.401%   07/01/2025   01/21/2027   100,000,000   100,000,000
Federal Farm Credit Banks Funding Corp., 3 mo. Treasury money market yield + 0.12% (a)

  4.401%   07/01/2025   01/27/2027   100,000,000   100,000,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.07% (a)

  4.460%   07/01/2025   12/07/2026   119,100,000   119,100,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.07% (a)

  4.460%   07/01/2025   04/01/2027   287,686,000   287,686,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.08% (a)

  4.465%   07/01/2025   11/16/2026   133,200,000   133,200,000
Federal Farm Credit Banks Funding Corp., 3 mo. Treasury money market yield + 0.19% (a)

  4.471%   07/01/2025   02/06/2026   250,000,000   249,992,821
Federal Farm Credit Banks Funding Corp., SOFR + 0.09% (a)

  4.475%   07/01/2025   05/15/2026   301,200,000   301,200,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.09% (a)

  4.480%   07/01/2025   01/28/2026   156,200,000   156,200,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.10% (a)

  4.485%   07/01/2025   02/12/2027   225,300,000   225,300,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.10% (a)

  4.490%   07/01/2025   04/01/2026   613,500,000   613,500,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.10% (a)

  4.490%   07/01/2025   06/18/2026   47,400,000   47,392,440
Federal Farm Credit Banks Funding Corp., SOFR + 0.10% (a)

  4.490%   07/01/2025   06/23/2027   76,100,000   76,100,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.11% (a)

  4.495%   07/01/2025   03/18/2026   450,400,000   450,377,034
Federal Farm Credit Banks Funding Corp., SOFR + 0.11% (a)

  4.495%   07/01/2025   05/19/2026   33,200,000   33,200,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.11% (a)

  4.500%   07/01/2025   04/16/2026   94,700,000   94,700,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.12% (a)

  4.505%   07/01/2025   04/08/2026   28,550,000   28,550,000
Federal Farm Credit Banks Funding Corp., Fed Funds Rate + 0.18% (a)

  4.510%   07/01/2025   11/02/2026   189,700,000   189,700,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.12% (a)

  4.510%   07/01/2025   01/27/2026   417,948,000   417,948,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.12% (a)

  4.510%   07/01/2025   05/08/2026   30,000,000   30,002,236
Federal Farm Credit Banks Funding Corp., SOFR + 0.13% (a)

  4.515%   07/01/2025   07/09/2026   95,000,000   95,000,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.13% (a)

  4.515%   07/01/2025   07/16/2026   270,800,000   270,800,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.13% (a)

  4.515%   07/01/2025   07/21/2026   94,900,000   94,900,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.13% (a)

  4.515%   07/01/2025   09/08/2026   66,400,000   66,400,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.13% (a)

  4.515%   07/01/2025   10/06/2026   50,000,000   50,000,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.13% (a)

  4.520%   07/01/2025   02/20/2026   65,000,000   65,000,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.13% (a)

  4.520%   07/01/2025   08/28/2026   33,100,000   33,100,000
See accompanying notes to financial statements.
1

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Federal Farm Credit Banks Funding Corp., SOFR + 0.13% (a)

  4.520%   07/01/2025   11/02/2026   $175,000,000   $175,000,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.13% (a)

  4.520%   07/01/2025   02/03/2027   106,100,000   106,100,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.525%   07/01/2025   03/04/2026   259,300,000   259,330,110
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.525%   07/01/2025   09/16/2026   246,900,000   246,900,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.525%   07/01/2025   10/21/2026   405,000,000   404,987,139
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.525%   07/01/2025   12/18/2026   247,400,000   247,463,765
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.525%   07/01/2025   01/08/2027   339,500,000   339,842,284
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.525%   07/01/2025   01/14/2027   70,000,000   70,000,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.530%   07/01/2025   09/04/2026   129,320,000   129,320,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.530%   07/01/2025   10/09/2026   590,600,000   590,600,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.530%   07/01/2025   10/23/2026   100,000,000   100,000,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.530%   07/01/2025   11/20/2026   243,700,000   243,700,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.530%   07/01/2025   11/25/2026   57,277,000   57,277,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.14% (a)

  4.530%   07/01/2025   12/02/2026   62,200,000   62,200,000
Federal Farm Credit Banks Funding Corp., SOFR + 0.20% (a)

  4.585%   07/01/2025   05/03/2027   56,400,000   56,493,763
Federal Farm Credit Banks Funding Corp., SOFR + 0.20% (a)

  4.590%   07/01/2025   03/29/2027   46,600,000   46,677,670
Federal Farm Credit Banks Funding Corp., SOFR + 0.27% (a)

  4.660%   07/01/2025   12/18/2026   28,500,000   28,584,991
Federal Farm Credit Banks Funding Corp., SOFR + 0.35% (a)

  4.740%   07/01/2025   11/25/2025   14,100,000   14,115,972
Federal Farm Credit Discount Notes (b)

  4.060%   10/30/2025   10/30/2025   25,000,000   24,658,847
Federal Farm Credit Discount Notes (b)

  4.160%   11/26/2025   11/26/2025   40,000,000   39,315,911
Federal Home Loan Bank Discount Notes (b)

  4.105%   08/04/2025   08/04/2025   267,400,000   266,363,305
Federal Home Loan Bank Discount Notes (b)

  4.105%   08/05/2025   08/05/2025   178,300,000   177,588,410
Federal Home Loan Bank Discount Notes (b)

  4.110%   11/21/2025   11/21/2025   448,000,000   440,686,027
Federal Home Loan Bank Discount Notes (b)

  4.110%   11/28/2025   11/28/2025   627,100,000   616,313,192
Federal Home Loan Bank Discount Notes (b)

  4.163%   11/26/2025   11/26/2025   45,400,000   44,622,999
Federal Home Loan Banks

  4.388%   01/09/2026   01/09/2026   970,700,000   970,407,455
Federal Home Loan Banks, SOFR + 0.04% (a)

  4.425%   07/01/2025   05/14/2026   143,000,000   143,000,000
Federal Home Loan Banks, SOFR + 0.04% (a)

  4.430%   07/01/2025   04/24/2026   53,400,000   53,400,000
Federal Home Loan Banks, SOFR + 0.09% (a)

  4.480%   07/01/2025   08/15/2025   482,030,000   482,030,000
Federal Home Loan Banks, SOFR + 0.10% (a)

  4.485%   07/01/2025   03/19/2026   189,700,000   189,700,000
Federal Home Loan Banks, SOFR + 0.11% (a)

  4.500%   07/01/2025   04/10/2026   10,000   10,000
Federal Home Loan Banks, SOFR + 0.11% (a)

  4.500%   07/01/2025   04/15/2026   100,000   100,000
Federal Home Loan Banks, SOFR + 0.13% (a)

  4.520%   07/01/2025   02/09/2026   120,520,000   120,520,000
Federal Home Loan Banks, SOFR + 0.13% (a)

  4.520%   07/01/2025   02/13/2026   384,760,000   384,760,000
Federal Home Loan Banks, SOFR + 0.14% (a)

  4.525%   07/01/2025   01/19/2027   192,600,000   192,600,000
Federal Home Loan Banks, SOFR + 0.14% (a)

  4.525%   07/01/2025   01/21/2027   163,700,000   163,700,000
Federal Home Loan Banks, SOFR + 0.14% (a)

  4.530%   07/01/2025   09/18/2026   185,000,000   185,000,727
Federal Home Loan Banks, SOFR + 0.14% (a)

  4.530%   07/01/2025   10/29/2026   473,200,000   473,200,000
Federal Home Loan Banks, SOFR + 0.16% (a)

  4.550%   07/01/2025   07/14/2025   678,450,000   678,472,223
See accompanying notes to financial statements.
2

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Federal Home Loan Banks, SOFR + 0.18% (a)

  4.570%   07/01/2025   12/02/2026   $750,000,000   $750,000,000
Federal Home Loan Banks, SOFR + 0.20% (a)

  4.590%   07/01/2025   12/18/2026   47,000,000   47,035,455
Federal Home Loan Mortgage Corp., SOFR + 0.09% (a)

  4.480%   07/01/2025   01/26/2026   26,100,000   26,109,172
Federal Home Loan Mortgage Corp., SOFR + 0.11% (a)

  4.500%   07/01/2025   03/05/2026   591,300,000   591,300,000
Federal Home Loan Mortgage Corp., SOFR + 0.11% (a)

  4.500%   07/01/2025   05/07/2026   177,400,000   177,400,000
Federal Home Loan Mortgage Corp., SOFR + 0.12% (a)

  4.505%   07/01/2025   04/02/2026   705,600,000   705,628,289
Federal Home Loan Mortgage Corp., SOFR + 0.14% (a)

  4.530%   07/01/2025   09/04/2026   599,300,000   599,300,000
Federal Home Loan Mortgage Corp., SOFR + 0.14% (a)

  4.530%   07/01/2025   09/23/2026   578,000,000   578,000,000
Federal Home Loan Mortgage Corp., SOFR + 0.14% (a)

  4.530%   07/01/2025   10/16/2026   416,300,000   416,342,259
Federal National Mortgage Association, SOFR + 0.12% (a)

  4.510%   07/01/2025   07/29/2026   536,750,000   536,849,752
Federal National Mortgage Association, SOFR + 0.14% (a)

  4.525%   07/01/2025   08/21/2026   589,200,000   589,200,000
Federal National Mortgage Association, SOFR + 0.14% (a)

  4.530%   07/01/2025   09/11/2026   530,800,000   530,798,611
Federal National Mortgage Association, SOFR + 0.14% (a)

  4.530%   07/01/2025   10/23/2026   91,700,000   91,700,000
Federal National Mortgage Association, SOFR + 0.14% (a)

  4.530%   07/01/2025   11/20/2026   713,504,000   713,870,775
Federal National Mortgage Association, SOFR + 0.14% (a)

  4.530%   07/01/2025   12/11/2026   126,100,000   126,100,000
TOTAL GOVERNMENT AGENCY DEBT

                  19,969,624,634
TREASURY DEBT—45.8%                    
U.S. Treasury Bills (b)

  3.795%   10/02/2025   10/02/2025   800,930,000   792,674,037
U.S. Treasury Bills (b)

  4.060%   10/30/2025   10/30/2025   1,810,720,000   1,786,001,091
U.S. Treasury Bills (b)

  4.080%   10/09/2025   10/09/2025   321,760,000   318,113,387
U.S. Treasury Bills (b)

  4.085%   11/06/2025   11/06/2025   3,260,390,000   3,212,841,697
U.S. Treasury Bills (b)(c)

  4.095%   01/02/2026   01/02/2026   5,538,590,000   5,423,106,403
U.S. Treasury Bills (b)

  4.096%   09/25/2025   09/25/2025   1,907,533,200   1,888,872,037
U.S. Treasury Bills (b)

  4.100%   09/18/2025   09/18/2025   2,590,240,000   2,566,935,070
U.S. Treasury Bills (b)

  4.105%   11/13/2025   11/13/2025   868,770,000   855,382,012
U.S. Treasury Bills (b)

  4.105%   12/26/2025   12/26/2025   1,871,650,000   1,833,634,452
U.S. Treasury Bills (b)

  4.125%   07/10/2025   07/10/2025   1,677,910,000   1,676,181,469
U.S. Treasury Bills (b)

  4.135%   07/03/2025   07/03/2025   49,000,000   48,988,744
U.S. Treasury Bills (b)

  4.135%   09/04/2025   09/04/2025   1,979,610,000   1,964,642,446
U.S. Treasury Bills (b)

  4.140%   11/20/2025   11/20/2025   1,307,660,000   1,286,309,781
U.S. Treasury Bills (b)

  4.140%   12/11/2025   12/11/2025   2,561,380,000   2,513,290,754
U.S. Treasury Bills (b)

  4.153%   11/28/2025   11/28/2025   2,823,970,000   2,775,056,103
U.S. Treasury Bills (b)

  4.153%   12/04/2025   12/04/2025   3,135,660,000   3,079,222,964
U.S. Treasury Bills (b)

  4.155%   12/18/2025   12/18/2025   2,925,410,000   2,868,088,198
U.S. Treasury Bills (b)

  4.165%   07/24/2025   07/24/2025   1,523,950,000   1,519,895,406
U.S. Treasury Bills (b)

  4.173%   08/14/2025   08/14/2025   3,298,038,000   3,281,024,517
U.S. Treasury Bills (b)

  4.180%   07/17/2025   07/17/2025   893,390,000   891,734,459
U.S. Treasury Bills (b)

  4.180%   08/28/2025   08/28/2025   1,295,371,000   1,286,595,909
U.S. Treasury Bills (b)

  4.190%   09/02/2025   09/02/2025   2,130,920,000   2,115,292,974
U.S. Treasury Bills (b)

  4.195%   08/12/2025   08/12/2025   5,297,920,000   5,271,883,978
U.S. Treasury Bills (b)

  4.200%   07/29/2025   07/29/2025   1,104,850,000   1,101,248,417
U.S. Treasury Bills (b)

  4.200%   08/05/2025   08/05/2025   1,305,071,000   1,299,741,960
U.S. Treasury Bills (b)

  4.203%   08/21/2025   08/21/2025   2,655,380,000   2,639,466,184
U.S. Treasury Bills (b)(c)

  4.208%   10/28/2025   10/28/2025   97,870,000   96,508,812
U.S. Treasury Bills (b)

  4.220%   10/14/2025   10/14/2025   694,260,000   685,714,816
U.S. Treasury Bills (b)

  4.235%   10/21/2025   10/21/2025   912,100,000   900,082,576
U.S. Treasury Bills (b)

  4.248%   09/16/2025   09/16/2025   1,869,970,000   1,852,996,154
U.S. Treasury Bills (b)

  4.250%   09/11/2025   09/11/2025   84,990,000   84,267,585
U.S. Treasury Bills (b)

  4.394%   08/19/2025   08/19/2025   631,674,000   627,896,133
See accompanying notes to financial statements.
3

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.10% (a)

  4.379%   07/01/2025   01/31/2027   $1,798,890,000   $1,798,797,904
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.17% (a)

  4.410%   07/01/2025   10/31/2025   731,684,000   731,569,421
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.15% (a)

  4.431%   07/01/2025   04/30/2026   712,182,900   712,174,799
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.16% (a)

  4.441%   07/01/2025   04/30/2027   611,070,000   611,079,442
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.18% (a)

  4.463%   07/01/2025   07/31/2026   2,084,470,000   2,082,897,960
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.21% (a)

  4.486%   07/01/2025   10/31/2026   1,634,560,000   1,634,946,986
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.25% (a)

  4.526%   07/01/2025   01/31/2026   530,243,800   530,252,079
U.S. Treasury Notes

  4.020%   04/30/2026   04/30/2026   1,910,115,000   1,873,537,101
U.S. Treasury Notes

  4.100%   03/31/2026   03/31/2026   1,909,148,000   1,879,887,113
U.S. Treasury Notes

  4.180%   05/15/2026   05/15/2026   425,920,000   423,879,864
U.S. Treasury Notes

  4.190%   12/31/2025   12/31/2025   429,960,000   430,065,200
U.S. Treasury Notes

  4.200%   12/31/2025   12/31/2025   66,140,000   64,908,457
U.S. Treasury Notes

  4.210%   05/15/2026   05/15/2026   98,280,000   96,134,808
U.S. Treasury Notes

  4.250%   02/28/2026   02/28/2026   490,940,000   492,096,149
U.S. Treasury Notes

  4.290%   08/15/2025   08/15/2025   2,736,117,000   2,728,515,731
U.S. Treasury Notes

  4.290%   02/28/2026   02/28/2026   169,790,000   165,654,872
U.S. Treasury Notes

  4.300%   09/30/2025   09/30/2025   873,756,000   866,725,758
U.S. Treasury Notes

  4.310%   10/31/2025   10/31/2025   134,770,000   132,997,243
U.S. Treasury Notes

  4.330%   10/31/2025   10/31/2025   133,920,000   134,209,343
U.S. Treasury Notes

  4.340%   11/30/2025   11/30/2025   139,014,000   139,309,216
U.S. Treasury Notes

  4.440%   07/31/2025   07/31/2025   2,050,567,000   2,044,613,310
U.S. Treasury Notes

  5.020%   07/15/2025   07/15/2025   326,380,000   326,135,904
TOTAL TREASURY DEBT

                  78,444,079,185
GOVERNMENT AGENCY REPURCHASE AGREEMENTS—17.7%                    
Agreement with Bank of Montreal and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Government National Mortgage Associations, 3.500% - 7.000% due 07/20/2044 - 06/20/2065, valued at $56,100,001); expected proceeds $55,006,707

  4.390%   07/01/2025   07/01/2025   55,000,000   55,000,000
Agreement with Barclays Capital, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Home Loan Mortgage Corporations, 3.000% - 4.500% due 04/01/2037 - 12/01/2049, Federal National Mortgage Associations, 2.500% - 6.000% due 05/01/2037 - 03/01/2053 and Government National Mortgage Associations, 2.500% - 6.500% due 04/20/2036 - 09/15/2059, valued at $51,000,000); expected proceeds $50,006,111

  4.400%   07/01/2025   07/01/2025   50,000,000   50,000,000
Agreement with BNP Paribas and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Home Loan Mortgage Corporations, 0.795% - 19.433% due 01/15/2027 - 04/25/2055, Federal National Mortgage Associations, 1.745% - 22.033% due 12/25/2053 - 10/25/2054 and Government National Mortgage Associations, 0.000% - 22.726% due 01/20/2041 - 09/20/2073, valued at $128,831,370); expected proceeds $125,094,287

  4.400%   07/01/2025   07/01/2025   125,079,000   125,079,000
See accompanying notes to financial statements.
4

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with Citigroup Global Markets, Inc. and Bank of New York Mellon (Tri-Party), dated 06/03/2025 (collateralized by Federal Home Loan Mortgage Corporations, 0.000% - 12.790% due 06/15/2027 - 03/25/2055, Federal National Mortgage Associations, 0.000% - 13.255% due 03/25/2030 - 10/25/2060 and Government National Mortgage Associations, 0.000% - 18.887% due 06/20/2050 - 06/20/2075, valued at $978,500,072); expected proceeds $964,186,667 (d)

  4.480%   07/01/2025   10/01/2025   $950,000,000   $950,000,000
Agreement with Citigroup Global Markets, Inc. and Bank of New York Mellon (Tri-Party), dated 06/18/2025 (collateralized by Federal Home Loan Mortgage Corporations, 5.155% - 8.235% due 06/25/2054 - 07/25/2055, valued at $206,000,000); expected proceeds $202,913,333 (d)

  4.370%   10/16/2025   10/16/2025   200,000,000   200,000,000
Agreement with Citigroup Global Markets, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Government National Mortgage Associations, 0.000% - 36.374% due 02/16/2041 - 06/20/2075, valued at $862,110,000); expected proceeds $837,102,300

  4.400%   07/01/2025   07/01/2025   837,000,000   837,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a Federal Home Loan Mortgage Corporation, 6.500% due 04/01/2055, valued at $306,000,000); expected proceeds $300,036,833

  4.420%   07/01/2025   07/01/2025   300,000,000   300,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a Federal Home Loan Mortgage Corporation, 6.623% due 01/01/2054 and Federal National Mortgage Associations, 1.500% - 7.500% due 07/01/2028 - 06/01/2055, valued at $2,040,000,000); expected proceeds $2,000,244,444

  4.400%   07/01/2025   07/01/2025   2,000,000,000   2,000,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Note, 4.000% due 02/28/2030, Federal Home Loan Mortgage Corporations, 3.500% - 6.500% due 06/01/2040 - 07/01/2055 and Federal National Mortgage Associations, 2.000% - 7.000% due 07/01/2036 - 06/01/2063, valued at $1,173,000,569); expected proceeds $1,150,140,556

  4.400%   07/01/2025   07/01/2025   1,150,000,000   1,150,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Home Loan Mortgage Corporations, 1.500% - 8.500% due 08/01/2025 - 07/01/2055, Federal National Mortgage Associations, 1.500% - 8.500% due 07/25/2025 - 07/01/2055, a U.S. Treasury Bill, 0.000% due 04/16/2026, U.S. Treasury Bonds, 2.750% - 4.625% due 11/15/2042 - 05/15/2054 and U.S. Treasury Notes, 0.625% - 4.625% due 03/31/2026 - 08/15/2033, valued at $6,120,000,000); expected proceeds $6,000,731,667

  4.390%   07/01/2025   07/01/2025   6,000,000,000   6,000,000,000
See accompanying notes to financial statements.
5

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with Goldman Sachs & Co. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Home Loan Mortgage Corporations, 2.000% - 6.500% due 01/01/2029 - 05/01/2055, Federal National Mortgage Associations, 2.000% - 6.500% due 09/01/2028 - 04/01/2055, Federal National Mortgage Associations Strips, 6.000% due 02/01/2053 and Government National Mortgage Associations, 0.226% - 7.500% due 01/20/2039 - 06/16/2066, valued at $2,058,695,817); expected proceeds $2,015,245,461

  4.400%   07/01/2025   07/01/2025   $2,014,999,183   $2,014,999,183
Agreement with HSBC Securities USA, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Home Loan Mortgage Corporations, 2.000% - 7.500% due 05/01/2036 - 02/01/2055 and Federal National Mortgage Associations, 2.000% - 7.500% due 12/01/2032 - 05/01/2055, valued at $444,720,000); expected proceeds $436,053,289

  4.400%   07/01/2025   07/01/2025   436,000,000   436,000,000
Agreement with ING Financial Markets, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Home Loan Mortgage Corporations, 3.000% - 6.000% due 06/01/2052 - 04/01/2055 and Federal National Mortgage Associations, 2.000% - 6.500% due 12/01/2047 - 12/01/2054, valued at $459,000,001); expected proceeds $450,054,875

  4.390%   07/01/2025   07/01/2025   450,000,000   450,000,000
Agreement with JP Morgan Securities, Inc. and Bank of New York Mellon (Tri-Party), dated 06/27/2025 (collateralized by Federal Home Loan Mortgage Corporations, 0.150% - 8.055% due 09/25/2026 - 07/01/2055, Federal National Mortgage Associations, 0.000% - 6.782% due 04/25/2030 - 05/25/2055, Federal National Mortgage Associations Strips, 4.500% - 6.500% due 11/01/2039 - 05/01/2055 and Government National Mortgage Associations, 0.125% - 6.202% due 07/16/2039 - 01/16/2063, valued at $3,430,135,448); expected proceeds $3,298,773,472 (d)

  4.540%   07/01/2025   10/24/2025   3,250,000,000   3,250,000,000
Agreement with JP Morgan Securities, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a Government National Mortgage Association, 5.500% due 06/20/2055, valued at $91,800,002); expected proceeds $90,010,975

  4.390%   07/01/2025   07/01/2025   90,000,000   90,000,000
Agreement with JP Morgan Securities, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Home Loan Mortgage Corporations, 1.500% - 7.505% due 08/01/2029 - 04/01/2055 and Federal National Mortgage Associations, 1.500% - 7.500% due 08/01/2026 - 07/01/2065, valued at $6,489,452,161); expected proceeds $6,362,985,603

  4.400%   07/01/2025   07/01/2025   6,362,208,000   6,362,208,000
Agreement with Mitsubishi UFJ Securities, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Home Loan Mortgage Corporations, 1.899% - 7.121% due 02/07/2029 - 03/01/2055, Federal National Mortgage Associations, 2.000% - 6.500% due 12/01/2027 - 06/01/2054 and U.S. Treasury Notes, 1.250% - 4.000% due 12/31/2026 - 10/31/2029, valued at $912,900,090); expected proceeds $895,109,389

  4.400%   07/01/2025   07/01/2025   895,000,000   895,000,000
See accompanying notes to financial statements.
6

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with Royal Bank of Canada and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Farm Credit Banks, 4.000% due 03/16/2027, Federal Home Loan Mortgage Corporations, 1.500% - 6.000% due 07/01/2030 - 04/01/2055, Federal National Mortgage Associations, 1.500% - 6.500% due 11/01/2025 - 04/01/2055 and Government National Mortgage Associations, 3.000% - 7.500% due 12/15/2027 - 06/20/2055, valued at $845,580,000); expected proceeds $829,101,553

  4.410%   07/01/2025   07/01/2025   $829,000,000   $829,000,000
Agreement with Royal Bank of Canada and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Home Loan Mortgage Corporations, 2.000% - 7.500% due 04/01/2031 - 01/01/2055 and Federal National Mortgage Associations, 2.000% - 7.500% due 12/01/2032 - 06/01/2055, valued at $663,000,000); expected proceeds $650,079,264

  4.390%   07/01/2025   07/01/2025   650,000,000   650,000,000
Agreement with Santander and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Note, 4.125% due 07/31/2031, Federal Home Loan Mortgage Corporations, 1.500% - 6.500% due 05/01/2026 - 01/01/2055, Federal National Mortgage Associations, 2.000% - 6.500% due 01/01/2040 - 12/01/2054 and Government National Mortgage Associations, 2.500% - 7.500% due 06/15/2027 - 06/20/2055, valued at $510,000,000); expected proceeds $500,061,111

  4.400%   07/01/2025   07/01/2025   500,000,000   500,000,000
Agreement with Standard Chartered Bank and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Inflation Index Note, 0.125% due 01/15/2030, Federal Home Loan Mortgage Corporations, 2.000% - 6.500% due 01/01/2041 - 09/01/2054, Federal National Mortgage Associations, 2.500% - 6.000% due 12/01/2041 - 12/01/2054, Government National Mortgage Associations, 4.000% - 5.500% due 04/20/2052 - 01/20/2055, U.S. Treasury Bills, 0.000% due 07/10/2025 - 11/28/2025, U.S. Treasury Bonds, 1.125% - 6.125% due 11/15/2027 - 02/15/2054 and U.S. Treasury Notes, 0.250% - 4.875% due 08/15/2025 - 11/15/2034, valued at $510,000,791); expected proceeds $500,061,111

  4.400%   07/01/2025   07/01/2025   500,000,000   500,000,000
See accompanying notes to financial statements.
7

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with UBS Securities LLC and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Farm Credit Banks, 0.900% - 5.240% due 04/23/2026 - 10/03/2039, Federal Home Loan Banks, 4.500% due 03/12/2027, Federal Home Loan Mortgage Corporations, 0.000% - 6.750% due 07/21/2025 - 10/10/2029, Federal National Mortgage Associations, 0.000% - 7.250% due 10/22/2025 - 11/15/2030, Resolution Funding Strips, 0.000% due 07/15/2025 - 07/15/2026, Tennessee Valley Authorities, 0.000% - 5.250% due 11/01/2025 - 12/15/2042, U.S. Treasury Bills, 0.000% due 07/03/2025 - 05/14/2026, U.S. Treasury Bonds, 1.125% - 6.875% due 08/15/2025 - 05/15/2053, U.S. Treasury Inflation Index Bonds, 0.125% - 2.375% due 01/15/2027 - 02/15/2054, U.S. Treasury Inflation Index Notes, 0.125% - 2.375% due 07/15/2026 - 01/15/2035, U.S. Treasury Notes, 0.250% - 5.000% due 07/15/2025 - 05/15/2035 and U.S. Treasury Strips, 0.000% due 08/15/2025 - 11/15/2052, valued at $153,000,000); expected proceeds $150,018,333

  4.400%   07/01/2025   07/01/2025   $150,000,000   $150,000,000
Agreement with Wells Fargo Bank and Bank of New York Mellon (Tri-Party), dated 04/01/2025 (collateralized by Federal Farm Credit Banks, 1.680% - 5.600% due 01/09/2026 - 06/25/2040, Federal Home Loan Banks, 0.650% - 5.950% due 06/03/2026 - 11/05/2041, Federal National Mortgage Associations, 0.450% - 4.750% due 08/18/2025 - 11/16/2035, Resolution Funding Strips, 0.000% due 10/15/2027 - 04/15/2030 and Tennessee Valley Authorities, 0.000% - 6.750% due 09/15/2025 - 09/15/2060, valued at $721,814,956); expected proceeds $710,271,722 (d)

  4.330%   08/01/2025   08/01/2025   700,000,000   700,000,000
Agreement with Wells Fargo Bank and Bank of New York Mellon (Tri-Party), dated 06/11/2025 (collateralized by a Government National Mortgage Association, 4.500% due 06/20/2052, Federal Home Loan Mortgage Corporations, 2.000% - 7.169% due 09/01/2043 - 05/01/2055 and Federal National Mortgage Associations, 2.000% - 6.500% due 07/01/2041 - 01/01/2055, valued at $393,653,389); expected proceeds $389,206,125 (d)

  4.370%   09/09/2025   09/09/2025   385,000,000   385,000,000
Agreement with Wells Fargo Bank and Bank of New York Mellon (Tri-Party), dated 06/11/2025 (collateralized by Federal Farm Credit Banks, 2.080% due 10/06/2036, Federal Home Loan Mortgage Corporations, 0.375% - 6.000% due 09/23/2025 - 07/01/2055, Federal National Mortgage Associations, 2.500% - 6.000% due 12/01/2051 - 01/01/2055, Government National Mortgage Associations, 2.500% - 7.000% due 06/15/2039 - 06/20/2065, U.S. Treasury Bonds, 3.000% - 4.625% due 11/15/2042 - 05/15/2054, U.S. Treasury Inflation Index Bonds, 0.750% - 2.375% due 02/15/2045 - 02/15/2055 and U.S. Treasury Notes, 0.750% - 4.875% due 04/30/2026 - 05/15/2032, valued at $393,649,049); expected proceeds $386,395,625 (d)

  4.350%   07/11/2025   07/11/2025   385,000,000   385,000,000
See accompanying notes to financial statements.
8

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with Wells Fargo Bank and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Bond, 4.000% due 11/15/2042, a U.S. Treasury Inflation Index Note, 1.875% due 07/15/2034, Federal Farm Credit Banks, 2.080% due 10/06/2036, Federal Home Loan Mortgage Corporations, 3.000% - 6.500% due 05/01/2039 - 05/01/2055, Federal National Mortgage Associations, 2.125% - 6.500% due 04/24/2026 - 06/01/2055, Government National Mortgage Associations, 2.500% - 6.500% due 03/15/2038 - 06/20/2055 and U.S. Treasury Inflation Index Bonds, 0.750% - 3.625% due 04/15/2028 - 02/15/2048, valued at $612,074,800); expected proceeds $600,073,333

  4.400%   07/01/2025   07/01/2025   $600,000,000   $600,000,000
Agreement with Wells Fargo Bank and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by Federal Home Loan Mortgage Corporations, 1.500% - 6.000% due 04/01/2037 - 06/01/2055, valued at $510,062,333); expected proceeds $500,061,111

  4.400%   07/01/2025   07/01/2025   500,000,000   500,000,000
TOTAL GOVERNMENT AGENCY REPURCHASE AGREEMENTS

                  30,364,286,183
TREASURY REPURCHASE AGREEMENTS—21.6%                    
Agreement with Australia and New Zealand Banking Group, dated 06/30/2025 (collateralized by U.S. Treasury Notes, 1.000% – 4.625% due 07/31/2027 – 02/15/2055, valued at $2,548,097,720); expected proceeds $2,500,305,556

  4.400%   07/01/2025   07/01/2025   2,500,000,000   2,500,000,000
Agreement with Bank of Nova Scotia and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Inflation Index Note, 1.375% due 07/15/2033, U.S. Treasury Bonds, 1.125% - 4.750% due 08/15/2040 - 05/15/2055 and U.S. Treasury Notes, 2.625% - 4.000% due 05/31/2027 - 02/15/2034, valued at $204,000,003); expected proceeds $200,024,389

  4.390%   07/01/2025   07/01/2025   200,000,000   200,000,000
Agreement with Barclays Capital, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Inflation Index Bond, 0.750% due 02/15/2045, a U.S. Treasury Inflation Index Note, 1.375% due 07/15/2033, U.S. Treasury Bonds, 2.250% - 4.750% due 08/15/2039 - 05/15/2053 and U.S. Treasury Notes, 0.250% - 4.500% due 09/30/2025 - 08/15/2032, valued at $76,500,003); expected proceeds $75,009,146

  4.390%   07/01/2025   07/01/2025   75,000,000   75,000,000
Agreement with BNP Paribas and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Bond, 4.000% due 11/15/2052 and U.S. Treasury Notes, 0.250% - 4.000% due 07/31/2025 - 06/30/2032, valued at $75,480,052); expected proceeds $74,009,024

  4.390%   07/01/2025   07/01/2025   74,000,000   74,000,000
Agreement with Citigroup Global Markets, Inc. and Bank of New York Mellon (Tri-Party), dated 05/16/2025 (collateralized by a U.S. Treasury Bond, 5.375% due 02/15/2031, a U.S. Treasury Inflation Index Note, 0.125% due 07/15/2030 and U.S. Treasury Notes, 0.875% - 4.250% due 05/15/2029 - 03/31/2031, valued at $561,000,027); expected proceeds $557,926,722 (d)

  4.360%   09/12/2025   09/12/2025   550,000,000   550,000,000
See accompanying notes to financial statements.
9

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 05/06/2025 (collateralized by U.S. Treasury Bills, 0.000% due 04/16/2026, U.S. Treasury Bonds, 3.000% - 6.625% due 02/15/2027 - 02/15/2049 and U.S. Treasury Notes, 1.500% - 5.000% due 09/30/2025 - 06/30/2031, valued at $510,000,024); expected proceeds $507,173,056 (d)

  4.340%   09/02/2025   09/02/2025   $500,000,000   $500,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Inflation Index Bond, 1.750% due 01/15/2028 and a U.S. Treasury Note, 3.750% due 04/30/2027, valued at $1,785,000,071); expected proceeds $1,750,213,403

  4.390%   07/01/2025   07/01/2025   1,750,000,000   1,750,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Note, 3.625% due 08/31/2029, valued at $357,000,046); expected proceeds $350,042,778

  4.400%   07/01/2025   07/01/2025   350,000,000   350,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Bills, 0.000% due 07/03/2025 - 03/19/2026 and U.S. Treasury Notes, 0.375% - 4.875% due 08/15/2025 - 05/15/2035, valued at $2,269,500,052); expected proceeds $2,225,270,708

  4.380%   07/01/2025   07/01/2025   2,225,000,000   2,225,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Bills, 0.000% due 09/25/2025 - 03/19/2026, U.S. Treasury Bonds, 1.250% - 6.625% due 02/15/2026 - 05/15/2053 and U.S. Treasury Notes, 0.250% - 4.875% due 07/31/2025 - 11/15/2034, valued at $6,834,000,034); expected proceeds $6,700,818,889

  4.400%   07/01/2025   07/01/2025   6,700,000,000   6,700,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Notes, 1.625% – 4.500% due 11/15/2025 – 04/30/2030, valued at $6,120,000,025); expected proceeds $6,000,731,667

  4.390%   07/01/2025   07/01/2025   6,000,000,000   6,000,000,000
Agreement with Fixed Income Clearing Corp. and Northern Trust (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Notes, 1.250% - 3.875% due 05/31/2028 - 06/15/2028, valued at $735,613,621); expected proceeds $720,087,600

  4.380%   07/01/2025   07/01/2025   720,000,000   720,000,000
Agreement with Fixed Income Clearing Corp., dated 06/30/2025 (collateralized by U.S. Treasury Notes, 1.375% – 4.625% due 03/31/2027 – 11/15/2034, valued at $6,119,103,329); expected proceeds $6,000,733,333

  4.400%   07/01/2025   07/01/2025   6,000,000,000   6,000,000,000
Agreement with JP Morgan Securities, Inc. and Bank of New York Mellon (Tri-Party), dated 06/23/2025 (collateralized by a U.S. Treasury Strip, 0.000% due 05/15/2027, valued at $372,300,001); expected proceeds $365,624,555

  4.400%   07/01/2025   07/07/2025   365,000,000   365,000,000
Agreement with JP Morgan Securities, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Note, 1.250% due 12/31/2026 and U.S. Treasury Inflation Index Notes, 0.500% - 1.625% due 10/15/2027 - 01/15/2028, valued at $4,411,500,027); expected proceeds $4,325,527,410

  4.390%   07/01/2025   07/01/2025   4,325,000,000   4,325,000,000
See accompanying notes to financial statements.
10

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with Mitsubishi UFJ Securities, Inc., dated 06/30/2025 (collateralized by U.S. Treasury Notes, 0.375% – 6.250%, due 08/31/2025 – 05/15/2034, valued at $3,120,121,329); expected proceeds $3,060,373,150

  4.390%   07/01/2025   07/01/2025   $3,060,000,000   $3,060,000,000
Agreement with National Australia Bank, Ltd., dated 06/30/2025 (collateralized by a U.S. Treasury Note, 2.250% due 08/15/2027, valued at $764,737,575); expected proceeds $750,091,250

  4.380%   07/01/2025   07/01/2025   750,000,000   750,000,000
Agreement with Prudential Insurance Co., dated 06/30/2025 (collateralized by U.S. Treasury Notes, 2.875% – 4.375% due 07/31/2026 – 11/15/2052 and U.S. Treasury Strips, 0.000% due 02/15/2037 – 08/15/2052, valued at $502,882,012); expected proceeds $490,761,225

  4.400%   07/01/2025   07/01/2025   490,701,250   490,701,250
Agreement with Prudential Insurance Co., dated 06/30/2025 (collateralized by U.S. Treasury Notes, 4.125% – 4.750% due 03/31/2029 – 11/15/2054 and U.S. Treasury Strips, 0.000% due 02/15/2040 – 11/15/2045, valued at $148,447,979); expected proceeds $145,086,481

  4.400%   07/01/2025   07/01/2025   145,068,750   145,068,750
Agreement with Royal Bank of Canada and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Notes, 3.500% - 3.750% due 09/30/2026 - 12/31/2028, valued at $204,000,090); expected proceeds $200,024,444

  4.400%   07/01/2025   07/01/2025   200,000,000   200,000,000
TOTAL TREASURY REPURCHASE AGREEMENTS

                  36,979,770,000
TOTAL INVESTMENTS –96.8% (e)(f)

                  165,757,760,002
Other Assets in Excess of Liabilities —3.2%

                  5,416,966,706
NET ASSETS –100.0%

                  $171,174,726,708
(a) Variable Rate Security - Interest rate shown is rate in effect at June 30, 2025. For securities based on a published reference rate and spread, the reference rate and spread are indicated in the description above.
(b) Rate shown is the discount rate at time of purchase.
(c) When-issued security.
(d) Illiquid security. These securities represent $6,920,000,000 or 4.0% of net assets as of June 30, 2025.
(e) Also represents the cost for federal tax purposes.
(f) Unless otherwise indicated, the values of the securities of the Portfolio are determined based on Level 2 inputs (Note 3).
SOFR Secured Overnight Financing Rate
See accompanying notes to financial statements.
11

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
STATEMENT OF ASSETS AND LIABILITIES
June 30, 2025 (Unaudited)

ASSETS  
Investments in unaffiliated issuers, at value and amortized cost.

$98,413,703,819
Repurchase agreements, at value and amortized cost

67,344,056,183
Total Investments

165,757,760,002
Cash

10,220,919,682
Receivable for investments sold

764,057,827
Interest receivable — unaffiliated issuers

269,147,149
TOTAL ASSETS

177,011,884,660
LIABILITIES  
Payable for investments purchased

5,824,945,329
Advisory and administrator fee payable

6,763,247
Custody, sub-administration and transfer agent fees payable

4,902,781
Trustees’ fees and expenses payable

39,082
Professional fees payable

263,878
Printing fees payable

110,554
Accrued expenses and other liabilities

133,081
TOTAL LIABILITIES

5,837,157,952
NET ASSETS

$171,174,726,708
See accompanying notes to financial statements.
12

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
STATEMENT OF OPERATIONS
For the Six Months Ended June 30, 2025 (Unaudited)

INVESTMENT INCOME  
Interest income — unaffiliated issuers

3,732,821,230
EXPENSES  
Advisory and administrator fee

41,753,522
Custodian, sub-administrator and transfer agent fees

4,967,506
Trustees’ fees and expenses  

384,105
Professional fees and expenses

522,529
Printing and postage fees

90,098
Insurance expense

22,758
Miscellaneous expenses

34,051
TOTAL EXPENSES

47,774,569
NET INVESTMENT INCOME (LOSS)

$3,685,046,661
REALIZED GAIN (LOSS)  
Net realized gain (loss) on:  
Investments — unaffiliated issuers

612,124
NET INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS

$3,685,658,785
See accompanying notes to financial statements.
13

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
STATEMENTS OF CHANGES IN NET ASSETS

  Six Months
Ended
6/30/25
(Unaudited)
  Year Ended
12/31/24
INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS:      
Net investment income (loss)

$3,685,046,661   $7,970,796,746
Net realized gain (loss)

612,124   (541,395)
Net increase (decrease) in net assets resulting from operations

3,685,658,785   7,970,255,351
CAPITAL TRANSACTIONS      
Contributions

341,605,370,147   659,062,075,445
Withdrawals

(347,858,408,200)   (645,387,590,224)
Net increase (decrease) in net assets from capital transactions

(6,253,038,053)   13,674,485,221
Net increase (decrease) in net assets during the period

(2,567,379,268)   21,644,740,572
Net assets at beginning of period

173,742,105,976   152,097,365,404
NET ASSETS AT END OF PERIOD

$171,174,726,708   $173,742,105,976
See accompanying notes to financial statements.
14

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
FINANCIAL HIGHLIGHTS
Selected data for a share outstanding throughout each period

  Six Months
Ended
6/30/25
(Unaudited)
  Year
Ended
12/31/24
  Year
Ended
12/31/23
  Year
Ended
12/31/22
  Year
Ended
12/31/21
  Year
Ended
12/31/20
Total return (a)

2.14%   5.30%   5.17%   1.63%   0.01%   0.45%
Ratios and Supplemental Data:                      
Net assets, end of period (in 000s)

$171,174,727   $173,742,106   $152,097,365   $91,338,606   $97,388,223   $79,611,947
Ratios to average net assets:                      
Total expenses

0.06%(b)   0.06%   0.06%   0.06%   0.06%   0.06%
Net investment income (loss)

4.39%(b)   5.14%   5.06%   1.71%   0.01%   0.39%
(a) Results represent past performance and are not indicative of future results. Total return for periods of less than one year are not annualized.
(b) Annualized.
See accompanying notes to financial statements.
15

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS
June 30, 2025 (Unaudited)

1.    Organization
State Street Master Funds (the “Trust”), a Massachusetts business trust registered under the Investment Company Act of 1940, as amended (“1940 Act”), is an open-end management investment company.
As of June 30, 2025, the Trust consists of four (4) series, each of which represents a separate series of beneficial interest in the Trust. State Street U.S. Government Money Market Portfolio (the “Portfolio”) is authorized to issue an unlimited number of shares of beneficial interest with no par value. The financial statements herein relate only to the Portfolio.
The Portfolio operates as a “government money market fund” within the meaning of Rule 2a-7 under the 1940 Act to comply with the amendments to Rule 2a-7. The Portfolio is not currently subject to liquidity fees during periods of high illiquidity in the markets for the investments held by it.
Under the Trust’s organizational documents, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust. Additionally, in the normal course of business, the Trust enters into contracts with service providers that contain general indemnification clauses. The Trust’s maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Trust that have not yet occurred.
2.    Segment Reporting
The Portfolio has one reportable segment. Business activities are managed on a consolidated basis and revenues are derived primarily through the Portfolio's investments in accordance with its investment objective. The Portfolio’s chief operating decision maker (“CODM”) is the President of the Trust. The CODM assesses performance based on the Portfolio’s Total Return as reported in the Financial Highlights, and the same accounting policies are applied as described in the summary of significant accounting policies. The Portfolio’s Total Return is utilized by the CODM to compare results, including the impact of the Portfolio’s costs, to the Portfolio’s competitors and to the Portfolio’s benchmark index.
3.    Summary of Significant Accounting Policies
The following is a summary of significant accounting policies followed by the Trust in the preparation of its financial statements:
The preparation of financial statements in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates. The Portfolio is an investment company under U.S. GAAP and follows the accounting and reporting guidance applicable to investment companies.
Security Valuation
The investments of the Portfolio are valued pursuant to the policy and procedures developed by the Oversight Committee (the “Committee”) and approved by the Board of Trustees of the Trust (the “Board”). The Committee provides oversight of the valuation of investments for the Portfolio. The Board has responsibility for overseeing the determination of the fair value of investments.
The Portfolio’s securities are recorded on the basis of amortized cost which approximates fair value as permitted by Rule 2a-7 under the 1940 Act. This method values a security at its cost on the date of purchase and, thereafter, assumes a constant amortization to maturity of any premiums or accretion of any discounts.
Because of the inherent uncertainties of valuation and under certain market conditions, the values reflected in the financial statements may differ from the value received upon actual sale of those investments and it is possible that the differences could be material.
Various inputs are used in determining the value of the Portfolio’s investments. The Portfolio values its assets and liabilities at fair value using a fair value hierarchy consisting of three broad levels that prioritize the inputs to valuation techniques giving the highest priority to readily available unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements) when market prices are not readily available or reliable. The categorization of a value determined for an investment within the hierarchy is based upon the pricing transparency of the investment and is not necessarily an indication of the risk associated with investing in it.
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NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

The three levels of the fair value hierarchy are as follows:
•  Level 1 – Unadjusted quoted prices in active markets for an identical asset or liability;
•  Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability either directly or indirectly, including quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not considered to be active, inputs other than quoted prices that are observable for the asset or liability (such as exchange rates, financing terms, interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs; and
•  Level 3 – Unobservable inputs for the asset or liability, including the Committee’s assumptions used in determining the fair value of investments.
Investment Transactions and Income Recognition
Investment transactions are accounted for on trade date for financial reporting purposes. Realized gains and losses from the sale or disposition of investments are determined using the identified cost method. Interest income is recorded daily on an accrual basis. All premiums and discounts are amortized/accreted for financial reporting purposes.
All of the net investment income and realized gains and losses from the security transactions of the Portfolio are allocated pro rata among the partners in the Portfolio on a daily basis based on each partner’s daily ownership percentage.
Expenses
Certain expenses, which are directly identifiable to a specific Portfolio, are applied to that Portfolio within the Trust. Other expenses which cannot be attributed to a specific Portfolio are allocated in such a manner as deemed equitable, taking into consideration the nature and type of expense and the relative net assets of the Portfolio within the Trust.
4.    Securities and Other Investments
Repurchase Agreements
The Portfolio may enter into repurchase agreements under the terms of a Master Repurchase Agreement. A repurchase agreement customarily obligates the seller at the time it sells securities to the Portfolio to repurchase the securities at a mutually agreed upon price and time. During the term of a repurchase agreement, the value of the underlying securities held as collateral on behalf of  the Portfolio including accrued interest, is required to exceed the value of the repurchase agreement, including accrued interest.
The Portfolio monitors, on a daily basis, the value of the collateral to ensure it is at least equal to the Portfolio’s principal amount of the repurchase agreement (including accrued interest). The underlying securities are ordinarily United States Government or Government Agency securities, but may consist of other securities. The use of repurchase agreements involves certain risks including counterparty risks. In the event of a default by the counterparty, realization of the collateral proceeds could be delayed, during which the value of the collateral may decline. 
As of June 30, 2025, the Portfolio had invested in repurchase agreements with the gross values of $67,344,056,183 and associated collateral equal to $68,840,364,869.
5.    Fees and Transactions with Affiliates
Advisory and Administrator Fee
The Trust has entered into an investment advisory agreement with SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”), a subsidiary of State Street Corporation and an affiliate of State Street Bank and Trust Company (“State Street”), under which the Adviser directs the investments of the Portfolio in accordance with its investment objective, policies, and limitations. In compensation for the Adviser’s services as investment adviser, the Portfolio pays the Adviser a management fee at an annual rate of 0.05% of its average daily net assets. SSGA FM also serves as administrator.
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STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

Each of the Adviser and State Street Global Advisors Funds Distributors, LLC (each a “Service Provider”) also may voluntarily reduce all or a portion of its fees and/or reimburse expenses for a Portfolio to the extent necessary to maintain a certain minimum net yield, which may vary from time to time, in SSGA FM’s sole discretion (any such waiver or reimbursement of expenses by a Service Provider being referred to herein as a “Voluntary Reduction”). The Adviser may, in its sole discretion, implement the Voluntary Reduction for some series of the Trust and not others. The amount of any Voluntary Reduction may differ between such series in the Adviser's sole discretion. The business objectives of the Adviser and its affiliates and their broader relationships with certain Portfolio shareholders, Financial Intermediaries or distribution channels could give the Adviser an incentive to implement the Voluntary Reduction for some series of the Trust and not others, or to implement it to a greater degree for some series or share classes than others. Under an agreement with the Service Providers relating to the Voluntary Reduction, the Portfolios have agreed to reimburse the Service Providers for the full dollar amount of any Voluntary Reduction beginning on May 1, 2020, subject to certain limitations. Each Service Provider may, in its sole discretion, irrevocably waive receipt of any or all reimbursement amounts due from a Portfolio.
A reimbursement to the Service Provider would increase fund expenses and may negatively impact the Portfolio's yield during such period. There is no guarantee that the Voluntary Reduction will be in effect at any given time or that the Portfolio will be able to avoid a negative yield.
There were no reimbursements for the period ended June 30, 2025.
Custodian, Sub-Administrator and Transfer Agent Fees
State Street serves as the custodian, sub-administrator and transfer agent to the Portfolio. For its services as custodian, sub-administrator and transfer agent, the Portfolio pays State Street an annual fee. The fees are accrued daily and paid monthly.
6.    Trustees’ Fees
The fees and expenses of the Trust's Trustees who are not “interested persons” of the Trust, as defined in the 1940 Act (“Independent Trustees”), are paid directly by the Portfolio. The Independent Trustees are reimbursed for travel and other out-of-pocket expenses in connection with meeting attendance and industry seminars.
7.    Income Tax Information
The Portfolio is not required to pay federal income taxes on its net investment income and net capital gains because it is treated as a partnership for federal income tax purposes. All interest, gains and losses of the Portfolio are deemed to have been “passed through” to the Portfolio’s partners in proportion to their holdings in the Portfolio, regardless of whether such items have been distributed by the Portfolio. Each partner is responsible for its tax liability based on its distributive share; therefore, no provision has been made for federal income taxes.
The Portfolio files federal and various state and local tax returns as required. No income tax returns are currently under examination. Generally, the federal returns are subject to examination by the Internal Revenue Service for a period of three years from date of filing, while the state returns may remain open for an additional year depending upon jurisdiction. SSGA FM has analyzed the Portfolio’s tax positions taken on tax returns for all open years and does not believe there are any uncertain tax positions that would require recognition of a tax liability. 
As of June 30, 2025, the cost of investments for federal income tax purposes was substantially the same as the cost for financial reporting purposes.
8.    Risks
Concentration Risk
As a result of the Portfolio’s ability to invest a large percentage of its assets in obligations of issuers within the same country, state, region, currency or economic sector, an adverse economic, business or political development may affect the value of the Portfolio’s investments more than if the Portfolio was more broadly diversified.
Market, Credit and Counterparty Risk
In the normal course of business, the Portfolio trades securities and enters into financial transactions where risk of potential loss exists due to changes in global economic conditions and fluctuations of the market (market risk). Additionally, the Portfolio may also be exposed to counterparty risk in the event that an issuer or guarantor fails to perform or that an institution or entity with which the Portfolio has unsettled or open transactions defaults. The value of securities held by the Portfolio may decline in response to certain events, including those directly involving
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STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

the companies whose securities are owned by the Portfolio; conditions affecting the general economy; overall market changes; local, regional or global political, social or economic instability; and currency and interest rate and price fluctuations (credit risk).
Financial assets, which potentially expose the Portfolio to market, credit and counterparty risks, consist principally of investments and cash due from counterparties. The extent of the Portfolio’s exposure to market, credit and counterparty risks in respect to these financial assets approximates their value as recorded in the Portfolio’s Statement of Assets and Liabilities, less any collateral held by the Portfolio.
The Portfolio’s investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities markets. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Portfolio is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. Local, regional or global events such as war, acts of terrorism, the spread of infectious illness, such as COVID-19, or other public health issues, or other events could have a significant impact on the Portfolio and its investments.
9.    Subsequent Events
Management has evaluated the impact of all subsequent events on the Portfolio through the date the financial statements were issued and has determined that there were no subsequent events requiring adjustment or disclosure in the financial statements.
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STATE STREET MASTER FUNDS
STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract
June 30, 2025 (Unaudited)

TRUSTEE CONSIDERATIONS IN APPROVING CONTINUATION OF INVESTMENT ADVISORY AGREEMENT1
Overview of the Contract Review Process
Under the Investment Company Act of 1940, as amended (the “1940 Act”), an investment advisory agreement between a mutual fund and its investment adviser may continue in effect from year to year only if its continuance is approved at least annually by the fund’s board of trustees or its shareholders, and by a vote of a majority of those trustees who are not “interested persons” of the fund (the “Independent Trustees”) cast in person at a meeting called for the purpose of considering such approval.
Consistent with these requirements, the Board of Trustees (the “Board”) of the State Street Master Funds (the “Trust”), met in person on April 2, 2025 and May 7-8, 2025, including in executive sessions attended by the Independent Trustees, to consider a proposal to approve, with respect to the State Street U.S. Government Money Market Portfolio (the “Portfolio”), the continuation of the investment advisory agreement (the “Advisory Agreement”) with SSGA Funds Management, Inc. (“SSGA FM” or the “Adviser”).  Prior to voting on the proposal, the Independent Trustees reviewed information furnished by the Adviser and others reasonably necessary to permit the Board to evaluate the proposal fully.  The Independent Trustees were separately represented by counsel who are independent of the Adviser (“Independent Counsel”) in connection with their consideration of approval of the Advisory Agreement. In advance of the meetings held on April 2, 2025 and May 7-8, 2025, the Independent Trustees met with their Independent Counsel on March 27, 2025, in a private session to review and discuss the information provided by the Adviser in connection with the proposal.   Following the April 2, 2025 meeting, the Independent Trustees submitted questions and requests for additional information to management, and considered management’s responses thereto prior to and at the May 7-8, 2025 meeting. The Independent Trustees considered, among other things, the following: 
Information about Performance, Expenses and Fees
A report prepared by an independent third-party provider of investment company data, which includes for the feeder fund for which the Portfolio serves as the master fund in a master-feeder structure (the “Fund”):
o Comparisons of the Fund’s performance over the past one-, three-, five- and ten-year periods ended December 31, 2024, to the performance of an appropriate benchmark provided by Broadridge Financial Solutions, Inc. (“Broadridge”) for the Fund (the “Benchmark”) and/or a universe of other mutual funds with similar investment objectives and policies (the “Performance Group” and/or the “Performance Universe”) constructed by Broadridge;
o Comparisons of the Fund’s expense ratio (with detail of component expenses) to the expense ratios of a group of comparable mutual funds selected by the independent third-party data provider (the “Expense Group” and/or “Expense Universe”);
o A chart showing the Fund’s historical average net assets relative to its total expenses, management fees, and non-management expenses over the past five calendar years; and
o Comparisons of the Fund’s contractual management fee to the contractual management fees of comparable mutual funds at different asset levels.
_______________________________
1 Over the course of many years overseeing the Portfolio and other investment companies, the Independent Trustees have identified numerous relevant issues, factors and concerns ("issues, factors and concerns") that they consider each year in connection with the proposed continuation of the advisory agreement, the administration agreement, the distribution plans, the distribution agreement and various related-party service agreements (the "annual review process"). The statement of issues, factors and concerns and the related conclusions of the Independent Trustees may not change substantially from year to year. However, the information requested by, and provided to, the Independent Trustees with respect to the issues, factors and concerns and on which their conclusions are based is updated annually and, in some cases, may differ substantially from the previous year. The Independent Trustees schedule annually a separate in-person meeting that is dedicated to the annual review process (the "special meeting"). At the special meeting and throughout the annual review process, the Independent Trustees take a fresh look at each of the issues, factors and concerns in light of the latest available information and each year present one or more sets of comments and questions to management with respect to specific issues, factors and concerns. Management responds to such comments and questions to the satisfaction of the Independent Trustees before the annual review process is completed and prior to the Independent Trustees voting on proposals to approve continuation of the agreements and plans.
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STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

Comparative information concerning fees charged by the Adviser for managing institutional accounts using investment strategies and techniques similar to those used in managing the Fund; and
Profitability analyses for (a) the Adviser with respect to the Portfolio and (b) affiliates of the Adviser that provide services to the Portfolio (“Affiliated Service Providers”).
Information about Portfolio Management
Descriptions of the investment management services provided by the Adviser, including its investment strategies and processes;
Information concerning the allocation of brokerage; and
Information regarding the procedures and processes used to value the assets of the Portfolio.
Information about the Adviser
Reports detailing the financial results and condition of the Adviser and its affiliates;
Descriptions of the qualifications, education and experience of the individual investment and other professionals responsible for managing the portfolio of the Portfolio and for Portfolio operations;
Information relating to compliance with and the administration of the Code of Ethics adopted by the Adviser;
Information about the Adviser’s proxy voting policies and procedures and information regarding the Adviser’s practices for overseeing proxy vendors;
Information concerning the resources devoted by the Adviser to overseeing compliance by the Portfolio and its service providers, including information concerning compliance with investment policies and restrictions and other operating policies of the Portfolio;
A description of the adequacy and sophistication of the Adviser’s technology and systems with respect to investment and administrative matters and a description of any material improvements or changes in technology or systems in the past year;
A description of the business continuity and disaster recovery plans of the Adviser; and
Information regarding the Adviser’s risk management processes.
Other Relevant Information
Information concerning the nature, extent, quality and cost of services provided to the Portfolio by SSGA FM in its capacity as the Portfolio’s administrator (the “Administrator”);
Information concerning the nature, extent, quality and cost of various non-investment management services provided to the Portfolio by affiliates of the Adviser, including the custodian, sub-administrator, transfer agent and fund accountant of the Portfolio, and the role of the Adviser in managing the Portfolio’s relationship with these service providers;
Copies of the Advisory Agreement and agreements with other service providers of the Portfolio;
Responses to a request for information reviewed prior to the April 2, 2025 and May 7-8, 2025 meetings by Independent Counsel, requesting specific information from each of:
o SSGA FM, in its capacity as the Portfolio’s Adviser and Administrator, with respect to its operations relating to the Portfolio and its approximate profit margins from such operations for the calendar year ended December 31, 2024; and the relevant operations of other Affiliated Service Providers to the Portfolio, together with their approximate profit margins from such relevant operations for the calendar year ended December 31, 2024;
o State Street Bank and Trust Company (“State Street”), the sub-administrator, custodian and transfer agent for the Portfolio, with respect to its operations relating to the Portfolio; and
o State Street Global Advisors Funds Distributors, LLC, the principal underwriter and distributor of the shares of the Portfolio (the “Distributor”), with respect to its operations relating to the Portfolio;
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STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

Information from SSGA FM, State Street and the Distributor with respect to the Trust providing any material changes to the previous information supplied in response to the letter from Independent Counsel prior to the executive session of the Board on May 7-8, 2025; and
Materials provided by Broadridge, circulated to the Independent Trustees and to Independent Counsel, with respect to the Fund.
In addition to the information identified above, the Board considered information provided from time to time by the Adviser and other service providers of the Portfolio throughout the year at meetings of the Board and its committees. At such meetings, the Trustees received, among other things, presentations by the portfolio managers and other investment professionals of the Adviser relating to the performance of the Portfolio and the investment strategies used in pursuing the Portfolio’s investment objective.
The Independent Trustees were assisted throughout the contract review process by their Independent Counsel. The Independent Trustees relied upon the advice of such counsel and their own business judgment in determining the material factors to be considered in evaluating the Advisory Agreement, and the weight to be given to each such factor.  The conclusions reached with respect to the Advisory Agreement were based on a comprehensive evaluation of all the information provided and not any single factor.  Moreover, each Trustee may have placed varying emphasis on particular factors in reaching conclusions with respect to the Portfolio.
Results of the Process
Based on a consideration of the foregoing and such other information as deemed relevant, including the factors and conclusions described below, at the meeting held on May 7-8, 2025, the Board, including a majority of the Independent Trustees, voted to approve the continuation of the Advisory Agreement effective June 1, 2025, for an additional year with respect to the Portfolio
Nature, Extent and Quality of Services
In considering whether to approve the Advisory Agreement, the Board evaluated the nature, extent and quality of services provided to the Portfolio by the Adviser.
The Board considered the Adviser’s management capabilities and investment process with respect to the types of investments held by the Portfolio, including the education, experience and number of investment professionals and other personnel who provide portfolio management, investment research, and similar services to the Portfolio. The Board evaluated the abilities and experience of such investment personnel in analyzing particular markets, industries and specific issuers of securities in these markets and industries. The Board also considered the substantial expertise of the Adviser in developing and applying proprietary quantitative models for managing various funds that invest primarily in money market instruments. The Board considered the extensive experience and resources committed by the Adviser to risk management, including with respect to investment risk, liquidity risk, operational risk, counterparty risk and model risk. Further, the Board considered material enhancements made to the risk management processes and systems over the past year. The Trustees also considered the significant risks assumed by the Adviser in connection with the services provided to the Portfolio, including reputational and entrepreneurial risks. The Board considered the Adviser’s success in maintaining the constant dollar value of the Portfolio through extraordinary market conditions. The Board also took into account the compensation paid to recruit and retain investment personnel, and the time and attention devoted to the Portfolio by senior management, as well as the Adviser’s succession planning process.
The Board had previously reviewed the compliance programs of SSGA FM and various Affiliated Service Providers. Among other things, the Board considered compliance and reporting matters relating to personal trading by investment personnel, selective disclosure of portfolio holdings, late trading, frequent trading, portfolio valuation, business continuity, the allocation of investment opportunities and the voting of proxies.
On the basis of the foregoing and other relevant information, the Board concluded that the Adviser can be expected to continue to provide high quality investment management and related services for the Portfolio.
Portfolio Performance
The Board considered the Portfolio’s performance by evaluating the performance of the Fund.  The Board compared the Fund’s investment performance to the performance of an appropriate benchmark and universe of comparable mutual funds for various time periods ended December 31, 2024.  For purposes of these comparisons the Independent Trustees relied on the Performance Group, Performance Universe and Benchmark and the analyses of the related data provided by Broadridge. It was noted that while the Board found the Broadridge data
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STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

generally useful, they recognized its limitations, including that the data may vary depending on the end date selected and that the results of the performance comparisons may vary depending on the selection of the peer group and its composition over time.  The Board also noted that it had received and discussed with management information throughout the year at periodic intervals comparing the Fund’s performance against its benchmark and against the Fund’s peers.  The Board also considered the Fund’s performance in light of overall financial market conditions.  Among other information, the Board considered the following performance information in its evaluation of the Portfolio:
Money Market Funds, Generally. The Board noted the relatively narrow range of returns in each Fund’s Performance Group and Performance Universe. The Board also observed that several basis points of performance, whether from yield on portfolio investments or fees waived by service providers, accounted for substantial differences in performance relative to other funds in such Performance Group and Performance Universe during periods when preservation of capital and net asset value were generally considered by stockholders to have been more important than several basis points of yield.
State Street Institutional U.S. Government Money Market Fund and State Street U.S. Government Money Market Portfolio. The Board considered that the Fund’s performance was above the medians of its Performance Group and Performance Universe for the 1-, 3-, 5- and 10-year periods. The Board also considered that the Fund’s performance was above the Benchmark for the 1-, 3-, 5- and 10-year periods.
On the basis of the foregoing and other relevant information, the Board concluded that the performance of the Portfolio is satisfactory.
Management Fees and Expenses
The Board reviewed the contractual investment advisory fee rates payable by the Portfolio and actual fees paid by the Fund, net of waivers.  As part of its review, the Board considered the Fund’s management fee and total expense ratio, including the portion attributable to administrative services provided by SSGA FM (both before and after giving effect to any expense caps), as compared to its Expense Group and Expense Universe, as constructed by Broadridge, and the related Broadridge analysis for the Fund.  The Board also considered the comparability of the fees charged and the services provided to the Fund by the Adviser to the fees charged and services provided to other clients of the Adviser, including institutional accounts. The Board considered the investment advisory fee in the context of the overall master-feeder arrangement with the Fund.  Among other information, the Board considered the following expense information in its evaluation of the Portfolio:
State Street Institutional U.S. Government Money Market Fund and State Street U.S. Government Money Market Portfolio. The Board considered that the Fund’s actual management fee was below the medians of its Expense Group and Expense Universe. The Board also considered that the Fund’s total expenses were below the medians of its Expense Group and Expense Universe.
On the basis of the foregoing and other relevant information, and in light of the nature, extent and quality of the services provided by the Adviser, the Board concluded that the fees and the expense ratio of the Fund compare favorably to the fees and expenses of the Expense Group and Expense Universe and the fees and expense ratio of the Portfolio are reasonable in relation to the services provided.
Profitability
The Board reviewed the level of profits realized by the Adviser and its affiliates in providing investment advisory and other services to the Portfolio and to all funds within the fund complex. The Board considered other direct and indirect benefits received by the Adviser and Affiliated Service Providers in connection with their relationships with the Portfolio, together with the profitability of each of the Affiliated Service Providers with respect to their services to the Portfolio and/or fund complex. The Board also considered the various risks borne by SSGA FM and State Street in connection with their various roles in servicing the Trust, including reputational and entrepreneurial risks.
The Board concluded that the profitability of the Adviser with respect to the Portfolio, and the profitability range of each of the Affiliated Service Providers with respect to its services to the Portfolio, were reasonable in relation to the services provided.
Economies of Scale
In reviewing management fees and profitability, the Board also considered the extent to which the Adviser and its affiliates, on the one hand, and the Portfolio and the fund complex, on the other hand, can expect to realize benefits from economies of scale as the assets of the Portfolio and fund complex increase.  The Board
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STATE STREET U.S. GOVERNMENT MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

acknowledged the difficulty in accurately measuring the benefits resulting from the economies of scale with respect to the management of the Portfolio or the fund complex taken as a whole. The Board concluded that, in light of the current size of the Portfolio and the fund complex, the level of profitability of the Adviser and its affiliates with respect to the Portfolio and the fund complex over various time periods, and the comparative management fee and expense ratio of the Fund during these periods, it does not appear that the Adviser or its affiliates has realized benefits from economies of scale in managing the assets of the Portfolio to such an extent that previously agreed advisory fees should be reduced or that breakpoints in such fees should be implemented for the Portfolio at this time.
Conclusions
In reaching its decision to approve the Advisory Agreement, the Board did not identify any single factor as being controlling, but based its recommendation on each of the factors it considered. Each Trustee may have contributed different weight to the various factors. Based upon the materials reviewed, the representations made and the considerations described above, and as part of its deliberations, the Board, including the Independent Trustees, concluded that the Adviser possesses the capability and resources to perform the duties required of it under the Advisory Agreement.
Further, based upon its review of the Advisory Agreement, the materials provided, and the considerations described above, the Board, including the Independent Trustees, concluded that (1) the terms of the Advisory Agreement are reasonable, fair, and in the best interests of the Portfolio and its shareholders, and (2) the rates payable under the Advisory Agreement are fair and reasonable in light of the usual and customary charges made for services of the same nature and quality.
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Table of Contents
Semi-Annual Financial Statements and Other Information
June 30, 2025
State Street Master Funds
State Street Treasury Money Market Portfolio

Table of Contents

TABLE OF CONTENTS (Unaudited)

1

3

4

5

6

7

11
Changes in and Disagreements with Accountants for Open-End Management Investment Companies (N-CSR Item 8) - Not Applicable
Proxy Disclosures for Open-End Management Investment Companies (N-CSR Item 9) - Not Applicable
Remuneration Paid to Directors, Officers, and Others of Open-End Management Investment Companies (N-CSR Item 10) - Please see Statement of Operations in the Financial Statements under Item 7 above

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
TREASURY DEBT—101.2%                    
U.S. Treasury Bills (a)

  3.795%   10/02/2025   10/02/2025   $61,580,000   $60,946,276
U.S. Treasury Bills (a)

  4.050%   10/23/2025   10/23/2025   101,020,000   99,724,418
U.S. Treasury Bills (a)

  4.060%   10/16/2025   10/16/2025   123,740,000   122,246,802
U.S. Treasury Bills (a)

  4.060%   10/30/2025   10/30/2025   89,230,000   88,011,808
U.S. Treasury Bills (a)

  4.080%   10/09/2025   10/09/2025   22,860,000   22,600,920
U.S. Treasury Bills (a)

  4.085%   11/06/2025   11/06/2025   250,920,000   247,260,677
U.S. Treasury Bills (a)(b)

  4.095%   01/02/2026   01/02/2026   152,400,000   149,222,901
U.S. Treasury Bills (a)

  4.096%   09/25/2025   09/25/2025   373,361,000   369,620,777
U.S. Treasury Bills (a)

  4.100%   09/18/2025   09/18/2025   558,551,200   553,427,088
U.S. Treasury Bills (a)

  4.105%   11/13/2025   11/13/2025   124,570,000   122,650,766
U.S. Treasury Bills (a)

  4.105%   12/26/2025   12/26/2025   67,190,000   65,825,287
U.S. Treasury Bills (a)

  4.125%   07/01/2025   07/01/2025   209,550,200   209,550,200
U.S. Treasury Bills (a)

  4.125%   07/10/2025   07/10/2025   248,420,000   248,162,677
U.S. Treasury Bills (a)

  4.135%   09/04/2025   09/04/2025   519,830,000   515,858,754
U.S. Treasury Bills (a)

  4.140%   11/20/2025   11/20/2025   98,880,000   97,265,582
U.S. Treasury Bills (a)

  4.140%   12/11/2025   12/11/2025   182,010,000   178,592,810
U.S. Treasury Bills (a)

  4.150%   07/08/2025   07/08/2025   478,000,000   477,616,906
U.S. Treasury Bills (a)

  4.153%   11/28/2025   11/28/2025   205,950,000   202,382,747
U.S. Treasury Bills (a)

  4.153%   12/04/2025   12/04/2025   129,600,000   127,267,400
U.S. Treasury Bills (a)

  4.155%   12/18/2025   12/18/2025   98,110,000   96,187,589
U.S. Treasury Bills (a)

  4.165%   07/24/2025   07/24/2025   147,910,000   147,514,039
U.S. Treasury Bills (a)

  4.173%   08/14/2025   08/14/2025   254,100,000   252,789,017
U.S. Treasury Bills (a)(b)

  4.175%   07/15/2025   07/15/2025   195,000,000   194,681,568
U.S. Treasury Bills (a)

  4.180%   07/17/2025   07/17/2025   559,870,000   558,822,161
U.S. Treasury Bills (a)

  4.180%   07/31/2025   07/31/2025   300,000,000   298,955,000
U.S. Treasury Bills (a)

  4.180%   08/28/2025   08/28/2025   105,731,000   105,017,996
U.S. Treasury Bills (a)

  4.190%   09/02/2025   09/02/2025   153,530,000   152,404,093
U.S. Treasury Bills (a)

  4.195%   07/22/2025   07/22/2025   515,900,000   514,632,591
U.S. Treasury Bills (a)

  4.195%   08/12/2025   08/12/2025   520,360,000   517,774,581
U.S. Treasury Bills (a)

  4.200%   07/29/2025   07/29/2025   93,130,000   92,826,454
U.S. Treasury Bills (a)

  4.200%   08/05/2025   08/05/2025   243,410,000   242,398,576
U.S. Treasury Bills (a)

  4.203%   08/21/2025   08/21/2025   211,950,000   210,679,706
U.S. Treasury Bills (a)(b)

  4.208%   10/28/2025   10/28/2025   7,680,000   7,573,186
U.S. Treasury Bills (a)

  4.220%   07/03/2025   07/03/2025   546,800,000   546,672,436
U.S. Treasury Bills (a)

  4.220%   10/14/2025   10/14/2025   51,780,000   51,142,674
U.S. Treasury Bills (a)

  4.227%   09/23/2025   09/23/2025   100,000,000   99,013,700
U.S. Treasury Bills (a)

  4.228%   09/30/2025   09/30/2025   50,000,000   49,465,628
U.S. Treasury Bills (a)

  4.230%   08/19/2025   08/19/2025   246,719,000   245,254,987
U.S. Treasury Bills (a)

  4.235%   10/21/2025   10/21/2025   71,680,000   70,735,576
U.S. Treasury Bills (a)

  4.248%   09/16/2025   09/16/2025   64,390,000   63,805,528
U.S. Treasury Bills (a)

  4.250%   09/11/2025   09/11/2025   156,570,000   155,237,655
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.10% (c)

  4.379%   07/01/2025   01/31/2027   257,820,000   257,817,801
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.13% (c)

  4.406%   07/01/2025   07/31/2025   487,500,000   487,517,082
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.17% (c)

  4.410%   07/01/2025   10/31/2025   179,206,000   179,176,613
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.15% (c)

  4.431%   07/01/2025   04/30/2026   247,800,000   247,817,635
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.16% (c)

  4.441%   07/01/2025   04/30/2027   112,930,000   112,930,322
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.18% (c)

  4.463%   07/01/2025   07/31/2026   451,260,000   450,938,066
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.21% (c)

  4.486%   07/01/2025   10/31/2026   200,140,000   200,200,095
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.25% (c)

  4.526%   07/01/2025   01/31/2026   $312,905,000   $312,903,601
U.S. Treasury Inflation-Indexed Notes

  1.080%   07/15/2025   07/15/2025   927,890,460   927,635,488
U.S. Treasury Notes

  4.020%   04/30/2026   04/30/2026   162,743,000   160,144,204
U.S. Treasury Notes

  4.100%   03/31/2026   03/31/2026   153,374,000   150,513,302
U.S. Treasury Notes

  4.180%   05/15/2026   05/15/2026   33,670,000   33,508,722
U.S. Treasury Notes

  4.190%   12/31/2025   12/31/2025   31,590,000   31,597,729
U.S. Treasury Notes

  4.200%   12/31/2025   12/31/2025   4,860,000   4,769,506
U.S. Treasury Notes

  4.210%   05/15/2026   05/15/2026   7,770,000   7,600,401
U.S. Treasury Notes

  4.250%   02/28/2026   02/28/2026   33,180,000   33,258,133
U.S. Treasury Notes

  4.290%   08/15/2025   08/15/2025   209,480,000   208,898,050
U.S. Treasury Notes

  4.290%   02/28/2026   02/28/2026   6,730,000   6,566,095
U.S. Treasury Notes

  4.300%   09/30/2025   09/30/2025   43,862,000   43,560,852
U.S. Treasury Notes

  4.330%   10/31/2025   10/31/2025   3,090,000   3,096,676
U.S. Treasury Notes

  4.440%   07/31/2025   07/31/2025   189,690,000   189,127,626
U.S. Treasury Notes

  5.020%   07/15/2025   07/15/2025   29,060,000   29,038,266
TOTAL INVESTMENTS –101.2% (d)(e)

                  12,710,435,802
Liabilities in Excess of Other Assets —(1.2)%

                  (156,160,107)
NET ASSETS –100.0%

                  $12,554,275,695
(a) Rate shown is the discount rate at time of purchase.
(b) When-issued security.
(c) Variable Rate Security - Interest rate shown is rate in effect at June 30, 2025. For securities based on a published reference rate and spread, the reference rate and spread are indicated in the description above.
(d) Also represents the cost for federal tax purposes.
(e) Unless otherwise indicated, the values of the securities of the Portfolio are determined based on Level 2 inputs (Note 3).
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
STATEMENT OF ASSETS AND LIABILITIES
June 30, 2025 (Unaudited)

ASSETS  
Investments in unaffiliated issuers, at value and amortized cost.

$12,710,435,802
Cash

304,778
Interest receivable — unaffiliated issuers

23,334,223
TOTAL ASSETS

12,734,074,803
LIABILITIES  
Payable for investments purchased

178,748,119
Advisory and administrator fee payable

525,628
Custody, sub-administration and transfer agent fees payable

453,739
Trustees’ fees and expenses payable

4,160
Professional fees payable

39,067
Printing fees payable

10,433
Accrued expenses and other liabilities

17,962
TOTAL LIABILITIES

179,799,108
NET ASSETS

$12,554,275,695
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
STATEMENT OF OPERATIONS
For the Six Months Ended June 30, 2025 (Unaudited)

INVESTMENT INCOME  
Interest income — unaffiliated issuers

$289,785,682
EXPENSES  
Advisory and administrator fee

3,313,154
Custodian, sub-administrator and transfer agent fees

407,201
Trustees’ fees and expenses  

39,107
Professional fees

56,496
Printing and postage fees

8,372
Insurance expense

1,953
Miscellaneous expenses

6,208
TOTAL EXPENSES

3,832,491
NET INVESTMENT INCOME (LOSS)

$285,953,191
REALIZED GAIN (LOSS)  
Net realized gain (loss) on:  
Investments — unaffiliated issuers

19,429
NET INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS

$285,972,620
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
STATEMENTS OF CHANGES IN NET ASSETS

  Six Months
Ended
6/30/25
(Unaudited)
  Year Ended
12/31/24
INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS:      
Net investment income (loss)

$285,953,191   $672,943,435
Net realized gain (loss)

19,429   336,952
Net increase (decrease) in net assets resulting from operations

285,972,620   673,280,387
CAPITAL TRANSACTIONS      
Contributions

14,990,784,819   36,057,022,712
Withdrawals

(16,846,209,358)   (36,832,811,231)
Net increase (decrease) in net assets from capital transactions

(1,855,424,539)   (775,788,519)
Net increase (decrease) in net assets during the period

(1,569,451,919)   (102,508,132)
Net assets at beginning of period

14,123,727,614   14,226,235,746
NET ASSETS AT END OF PERIOD

$12,554,275,695   $14,123,727,614
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
FINANCIAL HIGHLIGHTS
Selected data for a share outstanding throughout each period

  Six Months
Ended
6/30/25
(Unaudited)
  Year
Ended
12/31/24
  Year
Ended
12/31/23
  Year
Ended
12/31/22
  Year
Ended
12/31/21
  Year
Ended
12/31/20
Total return (a)

2.12%   5.29%   5.10%   1.49%   0.00%(b)   0.48%
Ratios and Supplemental Data:                      
Net assets, end of period (in 000s)

$12,554,276   $14,123,728   $14,226,236   $12,678,909   $14,060,872   $16,771,503
Ratios to average net assets:                      
Total expenses

0.06%(c)   0.06%   0.06%   0.06%   0.07%   0.06%
Net investment income (loss)

4.29%(c)   5.13%   4.94%   1.46%   0.00%(b)   0.38%
(a) Results represent past performance and are not indicative of future results. Total return for periods of less than one year are not annualized.
(b) Amount is less than 0.005%.
(c) Annualized.
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS
June 30, 2025 (Unaudited)

1.    Organization
State Street Master Funds (the “Trust”), a Massachusetts business trust registered under the Investment Company Act of 1940, as amended (“1940 Act”), is an open-end management investment company.
As of June 30, 2025, the Trust consists of four (4) series, each of which represents a separate series of beneficial interest in the Trust. State Street Treasury Money Market Portfolio (the “Portfolio”) is authorized to issue an unlimited number of shares of beneficial interest with no par value. The financial statements herein relate only to the Portfolio.
The Portfolio operates as a “government money market fund” within the meaning of Rule 2a-7 under the 1940 Act to comply with the amendments to Rule 2a-7. The Portfolio is not currently subject to liquidity fees during periods of high illiquidity in the markets for the investments it holds.
Under the Trust’s organizational documents, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust. Additionally, in the normal course of business, the Trust enters into contracts with service providers that contain general indemnification clauses. The Trust’s maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Trust that have not yet occurred.
2.    Segment Reporting
The Portfolio has one reportable segment. Business activities are managed on a consolidated basis and revenues are derived primarily through the Portfolio’s investments in accordance with its investment objective. The Portfolio’s chief operating decision maker (“CODM”) is the President of the Trust. The CODM assesses performance based on the Portfolio’s Total Return as reported in the Financial Highlights, and the same accounting policies are applied as described in the summary of significant accounting policies. The Portfolio’s Total Return is utilized by the CODM to compare results, including the impact of the Portfolio’s costs, to the Portfolio’s competitors and to the Portfolio’s benchmark index.
3.    Summary of Significant Accounting Policies
The following is a summary of significant accounting policies followed by the Trust in the preparation of its financial statements:
The preparation of financial statements in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates. The Portfolio is an investment company under U.S. GAAP and follows the accounting and reporting guidance applicable to investment companies.
Security Valuation
The investments of the Portfolio are valued pursuant to the policy and procedures developed by the Oversight Committee (the “Committee”) and approved by the Board of Trustees of the Trust (the “Board” and each member thereof, a "Trustee"). The Committee provides oversight of the valuation of investments for the Portfolio. The Board has responsibility for overseeing the determination of the fair value of investments.
The Portfolio’s securities are recorded on the basis of amortized cost which approximates fair value as permitted by Rule 2a-7 under the 1940 Act. This method values a security at its cost on the date of purchase and, thereafter, assumes a constant amortization to maturity of any premiums or accretion of any discounts.
Because of the inherent uncertainties of valuation and under certain market conditions, the values reflected in the financial statements may differ from the value received upon actual sale of those investments and it is possible that the differences could be material.
Various inputs are used in determining the value of the Portfolio’s investments. The Portfolio values its assets and liabilities at fair value using a fair value hierarchy consisting of three broad levels that prioritize the inputs to valuation techniques giving the highest priority to readily available unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements) when market prices are not readily available or reliable. The categorization of a value determined for an investment within the hierarchy is based upon the pricing transparency of the investment and is not necessarily an indication of the risk associated with investing in it.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

The three levels of the fair value hierarchy are as follows:
•  Level 1 – Unadjusted quoted prices in active markets for an identical asset or liability;
•  Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability either directly or indirectly, including quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not considered to be active, inputs other than quoted prices that are observable for the asset or liability (such as exchange rates, financing terms, interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs; and
•  Level 3 – Unobservable inputs for the asset or liability, including the Committee’s assumptions used in determining the fair value of investments.
Investment Transactions and Income Recognition
Investment transactions are accounted for on trade date for financial reporting purposes. Realized gains and losses from the sale or disposition of investments are determined using the identified cost method. Interest income is recorded daily on an accrual basis. All premiums and discounts are amortized/accreted for financial reporting purposes.
All of the net investment income and realized gains and losses from the security transactions of the Portfolio are allocated pro rata among the partners in the Portfolio on a daily basis based on each partner’s daily ownership percentage.
Expenses
Certain expenses, which are directly identifiable to a specific Portfolio, are applied to that Portfolio within the Trust. Other expenses which cannot be attributed to a specific Portfolio are allocated in such a manner as deemed equitable, taking into consideration the nature and type of expense and the relative net assets of the Portfolio within the Trust.
4.    Fees and Transactions with Affiliates
Advisory and Administrator Fee
The Trust has entered into an investment advisory agreement with SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”), a subsidiary of State Street Corporation and an affiliate of State Street Bank and Trust Company (“State Street”), under which the Adviser directs the investments of the Portfolio in accordance with its investment objective, policies, and limitations. In compensation for the Adviser’s services as investment adviser, the Portfolio pays the Adviser a management fee at an annual rate of 0.05% of its average daily net assets. SSGA FM also serves as administrator.
Each of the Adviser and State Street Global Advisors Funds Distributors, LLC (each a “Service Provider”) also may voluntarily reduce all or a portion of its fees and/or reimburse expenses for the Portfolio to the extent necessary to attempt to maintain a certain minimum net yield, which may vary from time to time, in SSGA FM’s sole discretion (any such waiver or reimbursement of expenses by a Service Provider being referred to herein as a “Voluntary Reduction”). The Adviser may, in its sole discretion, implement the Voluntary Reduction for some series of the Trust and not others. The amount of any Voluntary Reduction may differ between such series in the Adviser's sole discretion. The business objectives of the Adviser and its affiliates and their broader relationships with certain Portfolio shareholders, Financial Intermediaries or distribution channels could give the Adviser an incentive to implement the Voluntary Reduction for some series of the Trust and not others, or to implement it to a greater degree for some series or share classes than others. Under an agreement with the Service Providers relating to the Voluntary Reduction, the Portfolio has agreed to reimburse the Service Providers for the full dollar amount of any Voluntary Reduction beginning on May 1, 2020, subject to certain limitations. Each Service Provider may, in its sole discretion, irrevocably waive receipt of any or all reimbursement amounts due from the Portfolio.
A reimbursement to the Service Provider would increase fund expenses and may negatively impact the Portfolio's yield during such period. There is no guarantee that the Voluntary Reduction will be in effect at any given time or that the Portfolio will be able to avoid a negative yield.
There were no reimbursements for the period ended June 30, 2025.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

Custodian, Sub-Administrator and Transfer Agent Fees
State Street serves as the custodian, sub-administrator and transfer agent to the Portfolio. For its services as custodian, sub-administrator and transfer agent, the Portfolio pays State Street an annual fee. The fees are accrued daily and paid monthly.
5.    Trustees’ Fees
The fees and expenses of the Trust's Trustees who are not “interested persons” of the Trust, as defined in the 1940 Act (“Independent Trustees”), are paid directly by the Portfolio. The Independent Trustees are reimbursed for travel and other out-of-pocket expenses in connection with meeting attendance and industry seminars.
6.    Income Tax Information
The Portfolio is not required to pay federal income taxes on its net investment income and net capital gains because it is treated as a partnership for federal income tax purposes. All interest, gains and losses of the Portfolio are deemed to have been “passed through” to the Portfolio’s partners in proportion to their holdings in the Portfolio, regardless of whether such items have been distributed by the Portfolio. Each partner is responsible for its tax liability based on its distributive share; therefore, no provision has been made for federal income taxes.
The Portfolio files federal and various state and local tax returns as required. No income tax returns are currently under examination. Generally, the federal returns are subject to examination by the Internal Revenue Service for a period of three years from date of filing, while the state returns may remain open for an additional year depending upon jurisdiction. As of December 31, 2024, SSGA FM has analyzed the Portfolio’s tax positions taken on tax returns for all open years and does not believe there are any uncertain tax positions that would require recognition of a tax liability. 
As of June 30, 2025, the cost of investments for federal income tax purposes was substantially the same as the cost for financial reporting purposes.
7.    Risks
Concentration Risk
As a result of the Portfolio's ability to invest a large percentage of its assets in obligations of issuers within the same country, state, region, currency or economic sector, an adverse economic, business or political development may affect the value of the Portfolio's investments more than if the Portfolio was more broadly diversified.
Market, Credit and Counterparty Risk
In the normal course of business, the Portfolio trades securities and enters into financial transactions where risk of potential loss exists due to changes in global economic conditions and fluctuations of the market (market risk). Additionally, the Portfolio may also be exposed to counterparty risk in the event that an issuer or guarantor fails to perform or that an institution or entity with which the Portfolio has unsettled or open transactions defaults. The value of securities held by the Portfolio may decline in response to certain events, including those directly involving the companies whose securities are owned by the Portfolio; conditions affecting the general economy; overall market changes; local, regional or global political, social or economic instability; and currency and interest rate and price fluctuations (credit risk).
Financial assets, which potentially expose the Portfolio to market, credit and counterparty risks, consist principally of investments and cash due from counterparties. The extent of the Portfolio’s exposure to market, credit and counterparty risks in respect to these financial assets approximates their value as recorded in the Portfolio’s Statement of Assets and Liabilities, less any collateral held by the Portfolio.
The Portfolio’s investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities markets. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Portfolio is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. Local, regional or global events such as war, acts of terrorism, the spread of infectious illness, such as COVID-19, or other public health issues, or other events could have a significant impact on the Portfolio and its investments.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

8.    Subsequent Events
Management has evaluated the impact of all subsequent events on the Portfolio through the date the financial statements were issued and has determined that there were no subsequent events requiring adjustment or disclosure in the financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract
June 30, 2025 (Unaudited)

TRUSTEE CONSIDERATIONS IN APPROVING CONTINUATION OF INVESTMENT ADVISORY AGREEMENT1
Overview of the Contract Review Process
Under the Investment Company Act of 1940, as amended (the “1940 Act”), an investment advisory agreement between a mutual fund and its investment adviser may continue in effect from year to year only if its continuance is approved at least annually by the fund’s board of trustees or its shareholders, and by a vote of a majority of those trustees who are not “interested persons” of the fund (the “Independent Trustees”) cast in person at a meeting called for the purpose of considering such approval.
Consistent with these requirements, the Board of Trustees (the “Board”) of the State Street Master Funds (the “Trust”), met in person on April 2, 2025 and May 7-8, 2025, including in executive sessions attended by the Independent Trustees, to consider a proposal to approve, with respect to the State Street Treasury Money Market Portfolio (the “Portfolio”), the continuation of the investment advisory agreement (the “Advisory Agreement”) with SSGA Funds Management, Inc. (“SSGA FM” or the “Adviser”). Prior to voting on the proposal, the Independent Trustees reviewed information furnished by the Adviser and others reasonably necessary to permit the Board to evaluate the proposal fully. The Independent Trustees were separately represented by counsel who are independent of the Adviser (“Independent Counsel”) in connection with their consideration of approval of the Advisory Agreement. In advance of the meetings held on April 2, 2025 and May 7-8, 2025, the Independent Trustees met with their Independent Counsel on March 27, 2025, in a private session to review and discuss the information provided by the Adviser in connection with the proposal. Following the April 2, 2025 meeting, the Independent Trustees submitted questions and requests for additional information to management, and considered management’s responses thereto prior to and at the May 7-8, 2025 meeting. The Independent Trustees considered, among other things, the following: 
Information about Performance, Expenses and Fees
A report prepared by an independent third-party provider of investment company data, which includes for the feeder fund for which the Portfolio serves as the master fund in a master-feeder structure (the “Fund”):
o Comparisons of the Fund’s performance over the past one-, three-, five- and ten-year periods ended December 31, 2024, to the performance of an appropriate benchmark provided by Broadridge Financial Solutions, Inc. (“Broadridge”) for the Fund (the “Benchmark”) and/or a universe of other mutual funds with similar investment objectives and policies (the “Performance Group” and/or the “Performance Universe”) constructed by Broadridge;
o Comparisons of the Fund’s expense ratio (with detail of component expenses) to the expense ratios of a group of comparable mutual funds selected by the independent third-party data provider (the “Expense Group” and/or “Expense Universe”);
o A chart showing the Fund’s historical average net assets relative to its total expenses, management fees, and non-management expenses over the past five calendar years; and
o Comparisons of the Fund’s contractual management fee to the contractual management fees of comparable mutual funds at different asset levels.
____________________________________
1 Over the course of many years overseeing the Portfolio and other investment companies, the Independent Trustees have identified numerous relevant issues, factors and concerns ("issues, factors and concerns") that they consider each year in connection with the proposed continuation of the advisory agreement, the administration agreement, the distribution plans, the distribution agreement and various related-party service agreements (the "annual review process"). The statement of issues, factors and concerns and the related conclusions of the Independent Trustees may not change substantially from year to year. However, the information requested by, and provided to, the Independent Trustees with respect to the issues, factors and concerns and on which their conclusions are based is updated annually and, in some cases, may differ substantially from the previous year. The Independent Trustees schedule annually a separate in-person meeting that is dedicated to the annual review process (the "special meeting"). At the special meeting and throughout the annual review process, the Independent Trustees take a fresh look at each of the issues, factors and concerns in light of the latest available information and each year present one or more sets of comments and questions to management with respect to specific issues, factors and concerns. Management responds to such comments and questions to the satisfaction of the Independent Trustees before the annual review process is completed and prior to the Independent Trustees voting on proposals to approve continuation of the agreements and plans.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

Comparative information concerning fees charged by the Adviser for managing institutional accounts using investment strategies and techniques similar to those used in managing the Fund; and
Profitability analyses for (a) the Adviser with respect to the Portfolio and (b) affiliates of the Adviser that provide services to the Portfolio (“Affiliated Service Providers”).
Information about Portfolio Management
Descriptions of the investment management services provided by the Adviser, including its investment strategies and processes;
Information concerning the allocation of brokerage; and
Information regarding the procedures and processes used to value the assets of the Portfolio.
Information about the Adviser
Reports detailing the financial results and condition of the Adviser and its affiliates;
Descriptions of the qualifications, education and experience of the individual investment and other professionals responsible for managing the portfolio of the Portfolio and for Portfolio operations;
Information relating to compliance with and the administration of the Code of Ethics adopted by the Adviser;
Information about the Adviser’s proxy voting policies and procedures and information regarding the Adviser’s practices for overseeing proxy vendors;
Information concerning the resources devoted by the Adviser to overseeing compliance by the Portfolio and its service providers, including information concerning compliance with investment policies and restrictions and other operating policies of the Portfolio;
A description of the adequacy and sophistication of the Adviser’s technology and systems with respect to investment and administrative matters and a description of any material improvements or changes in technology or systems in the past year;
A description of the business continuity and disaster recovery plans of the Adviser; and
Information regarding the Adviser’s risk management processes.
Other Relevant Information
Information concerning the nature, extent, quality and cost of services provided to the Portfolio by SSGA FM in its capacity as the Portfolio’s administrator (the “Administrator”);
Information concerning the nature, extent, quality and cost of various non-investment management services provided to the Portfolio by affiliates of the Adviser, including the custodian, sub-administrator, transfer agent and fund accountant of the Portfolio, and the role of the Adviser in managing the Portfolio’s relationship with these service providers;
Copies of the Advisory Agreement and agreements with other service providers of the Portfolio;
Responses to a request for information reviewed prior to the April 2, 2025 and May 7-8, 2025 meetings by Independent Counsel, requesting specific information from each of;
o SSGA FM, in its capacity as the Portfolio’s Adviser and Administrator, with respect to its operations relating to the Portfolio and its approximate profit margins from such operations for the calendar year ended December 31, 2024; and the relevant operations of other Affiliated Service Providers to the Portfolio, together with their approximate profit margins from such relevant operations for the calendar year ended December 31, 2024;
o State Street Bank and Trust Company (“State Street”), the sub-administrator, custodian and transfer agent for the Portfolio, with respect to its operations relating to the Portfolio; and
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STATE STREET TREASURY MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

o State Street Global Advisors Funds Distributors, LLC, the principal underwriter and distributor of the shares of the Portfolio (the “Distributor”), with respect to its operations relating to the Portfolio;
Information from SSGA FM, State Street and the Distributor with respect to the Trust providing any material changes to the previous information supplied in response to the letter from Independent Counsel prior to the executive session of the Board on May 7-8, 2025; and
Materials provided by Broadridge, circulated to the Independent Trustees and to Independent Counsel, with respect to the Fund.
In addition to the information identified above, the Board considered information provided from time to time by the Adviser and other service providers of the Portfolio throughout the year at meetings of the Board and its committees. At such meetings, the Trustees received, among other things, presentations by the portfolio managers and other investment professionals of the Adviser relating to the performance of the Portfolio and the investment strategies used in pursuing the Portfolio’s investment objective.
The Independent Trustees were assisted throughout the contract review process by their Independent Counsel. The Independent Trustees relied upon the advice of such counsel and their own business judgment in determining the material factors to be considered in evaluating the Advisory Agreement, and the weight to be given to each such factor. The conclusions reached with respect to the Advisory Agreement were based on a comprehensive evaluation of all the information provided and not any single factor. Moreover, each Trustee may have placed varying emphasis on particular factors in reaching conclusions with respect to the Portfolio.
Results of the Process
Based on a consideration of the foregoing and such other information as deemed relevant, including the factors and conclusions described below, at the meeting held on May 7-8, 2025 the Board, including a majority of the Independent Trustees, voted to approve the continuation of the Advisory Agreement effective June 1, 2025, for an additional year with respect to the Portfolio.
Nature, Extent and Quality of Services
In considering whether to approve the Advisory Agreement, the Board evaluated the nature, extent and quality of services provided to the Portfolio by the Adviser.
The Board considered the Adviser’s management capabilities and investment process with respect to the types of investments held by the Portfolio, including the education, experience and number of investment professionals and other personnel who provide portfolio management, investment research, and similar services to the Portfolio. The Board evaluated the abilities and experience of such investment personnel in analyzing particular markets, industries and specific issuers of securities in these markets and industries. The Board also considered the substantial expertise of the Adviser in developing and applying proprietary quantitative models for managing various funds that invest primarily in money market instruments. The Board considered the extensive experience and resources committed by the Adviser to risk management, including with respect to investment risk, liquidity risk, operational risk, counterparty risk and model risk. Further, the Board considered material enhancements made to the risk management processes and systems over the past year. The Trustees also considered the significant risks assumed by the Adviser in connection with the services provided to the Portfolio, including reputational and entrepreneurial risks. The Board considered the Adviser’s success in maintaining the constant dollar value of the Portfolio through extraordinary market conditions. The Board also took into account the compensation paid to recruit and retain investment personnel, and the time and attention devoted to the Portfolio by senior management, as well as the Adviser’s succession planning process.
The Board had previously reviewed the compliance programs of SSGA FM and various Affiliated Service Providers. Among other things, the Board considered compliance and reporting matters relating to personal trading by investment personnel, selective disclosure of portfolio holdings, late trading, frequent trading, portfolio valuation, business continuity, the allocation of investment opportunities and the voting of proxies.
On the basis of the foregoing and other relevant information, the Board concluded that the Adviser can be expected to continue to provide high quality investment management and related services for the Portfolio.
13

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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

Portfolio Performance
The Board considered the Portfolio’s performance by evaluating the performance of the Fund. The Board compared the Fund’s investment performance to the performance of an appropriate benchmark and universe of comparable mutual funds for various time periods ended December 31, 2024.  For purposes of these comparisons the Independent Trustees relied on the Performance Group, Performance Universe and Benchmark and the analyses of the related data provided by Broadridge. It was noted that while the Board found the Broadridge data generally useful, they recognized its limitations, including that the data may vary depending on the end date selected and that the results of the performance comparisons may vary depending on the selection of the peer group and its composition over time. The Board also noted that it had received and discussed with management information throughout the year at periodic intervals comparing the Fund’s performance against its benchmark and against the Fund’s peers.  The Board also considered the Fund’s performance in light of overall financial market conditions.  Among other information, the Board considered the following performance information in its evaluation of the Portfolio:
Money Market Funds, Generally.  The Board noted the relatively narrow range of returns in each Fund’s Performance Group and Performance Universe. The Board also observed that several basis points of performance, whether from yield on portfolio investments or fees waived by service providers, accounted for substantial differences in performance relative to other funds in such Performance Group and Performance Universe during periods when preservation of capital and net asset value were generally considered by stockholders to have been more important than several basis points of yield.
State Street Institutional Treasury Money Market Fund and State Street Treasury Money Market Portfolio. The Board considered that the Fund’s performance was above the medians of its Performance Group and Performance Universe for the 1-, 3-, 5- and 10-year periods. The Board also considered that the Fund’s performance was above the Benchmark for the 1-, 3-, 5- and 10-year periods.
On the basis of the foregoing and other relevant information, the Board concluded that the performance of the Portfolio is satisfactory.
Profitability
The Board reviewed the level of profits realized by the Adviser and its affiliates in providing investment advisory and other services to the Portfolio and to all funds within the fund complex. The Board considered other direct and indirect benefits received by the Adviser and Affiliated Service Providers in connection with their relationships with the Portfolio, together with the profitability of each of the Affiliated Service Providers with respect to their services to the Portfolio and/or fund complex. The Board also considered the various risks borne by SSGA FM and State Street in connection with their various roles in servicing the Trust, including reputational and entrepreneurial risks.
The Board concluded that the profitability of the Adviser with respect to the Portfolio, and the profitability range of each of the Affiliated Service Providers with respect to its services to the Portfolio, were reasonable in relation to the services provided.
Economies of Scale
In reviewing management fees and profitability, the Board also considered the extent to which the Adviser and its affiliates, on the one hand, and the Portfolio and the fund complex, on the other hand, can expect to realize benefits from economies of scale as the assets of the Portfolio and fund complex increase. The Board acknowledged the difficulty in accurately measuring the benefits resulting from the economies of scale with respect to the management of the Portfolio or the fund complex taken as a whole. The Board concluded that, in light of the current size of the Portfolio and the fund complex, the level of profitability of the Adviser and its affiliates with respect to the Portfolio and the fund complex over various time periods, and the comparative management fee and expense ratio of the Fund during these periods, it does not appear that the Adviser or its affiliates has realized benefits from economies of scale in managing the assets of the Portfolio to such an extent that previously agreed advisory fees should be reduced or that breakpoints in such fees should be implemented for the Portfolio at this time.
Conclusions
In reaching its decision to approve the Advisory Agreement, the Board did not identify any single factor as being controlling, but based its recommendation on each of the factors it considered. Each Trustee may have contributed different weight to the various factors. Based upon the materials reviewed, the representations made and the considerations described above, and as part of its deliberations, the Board, including the Independent Trustees,
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STATE STREET MASTER FUNDS
STATE STREET TREASURY MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

concluded that the Adviser possesses the capability and resources to perform the duties required of it under the Advisory Agreement.
Further, based upon its review of the Advisory Agreement, the materials provided, and the considerations described above, the Board, including the Independent Trustees, concluded that (1) the terms of the Advisory Agreement are reasonable, fair, and in the best interests of the Portfolio and its shareholders, and (2) the rates payable under the Advisory Agreement are fair and reasonable in light of the usual and customary charges made for services of the same nature and quality.
15


Table of Contents
Semi-Annual Financial Statements and Other Information
June 30, 2025
State Street Master Funds
State Street Treasury Plus Money Market Portfolio

Table of Contents

TABLE OF CONTENTS (Unaudited)

1

7

8

9

10

11

15
Changes in and Disagreements with Accountants for Open-End Management Investment Companies (N-CSR Item 8) - Not Applicable
Proxy Disclosures for Open-End Management Investment Companies (N-CSR Item 9) - Not Applicable
Remuneration Paid to Directors, Officers, and Others of Open-End Management Investment Companies (N-CSR Item 10) - Please see Statement of Operations in the Financial Statements under Item 7 above

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
TREASURY DEBT—55.0%                    
U.S. Treasury Bills (a)

  3.795%   10/02/2025   10/02/2025   $267,900,000   $265,139,238
U.S. Treasury Bills (a)

  4.050%   10/23/2025   10/23/2025   439,560,000   433,922,643
U.S. Treasury Bills (a)

  4.060%   10/16/2025   10/16/2025   731,690,000   722,860,534
U.S. Treasury Bills (a)

  4.060%   10/30/2025   10/30/2025   573,160,000   565,335,061
U.S. Treasury Bills (a)

  4.080%   10/09/2025   10/09/2025   107,480,000   106,261,893
U.S. Treasury Bills (a)

  4.085%   11/06/2025   11/06/2025   1,190,430,000   1,173,069,215
U.S. Treasury Bills (a)(b)

  4.095%   01/02/2026   01/02/2026   1,827,310,000   1,789,209,488
U.S. Treasury Bills (a)

  4.096%   09/25/2025   09/25/2025   733,612,000   726,435,164
U.S. Treasury Bills (a)

  4.100%   09/18/2025   09/18/2025   801,760,000   794,546,398
U.S. Treasury Bills (a)

  4.105%   11/13/2025   11/13/2025   562,680,000   554,010,860
U.S. Treasury Bills (a)

  4.105%   12/26/2025   12/26/2025   670,660,000   657,038,058
U.S. Treasury Bills (a)

  4.125%   07/10/2025   07/10/2025   713,540,000   712,804,387
U.S. Treasury Bills (a)

  4.135%   07/03/2025   07/03/2025   150,000,000   149,965,542
U.S. Treasury Bills (a)

  4.135%   09/04/2025   09/04/2025   639,630,000   634,791,628
U.S. Treasury Bills (a)

  4.135%   11/20/2025   11/20/2025   446,640,000   439,347,690
U.S. Treasury Bills (a)

  4.140%   12/11/2025   12/11/2025   894,970,000   878,167,170
U.S. Treasury Bills (a)

  4.153%   11/28/2025   11/28/2025   1,013,180,000   995,630,741
U.S. Treasury Bills (a)

  4.153%   12/04/2025   12/04/2025   1,048,930,000   1,030,050,881
U.S. Treasury Bills (a)

  4.153%   12/18/2025   12/18/2025   988,980,000   969,601,481
U.S. Treasury Bills (a)

  4.165%   07/24/2025   07/24/2025   1,098,610,000   1,095,676,271
U.S. Treasury Bills (a)

  4.173%   08/14/2025   08/14/2025   806,169,000   801,991,530
U.S. Treasury Bills (a)

  4.180%   07/17/2025   07/17/2025   280,710,000   280,188,503
U.S. Treasury Bills (a)

  4.180%   08/28/2025   08/28/2025   411,619,000   408,829,470
U.S. Treasury Bills (a)

  4.190%   09/02/2025   09/02/2025   740,270,000   734,841,256
U.S. Treasury Bills (a)

  4.195%   08/12/2025   08/12/2025   1,769,730,000   1,761,032,864
U.S. Treasury Bills (a)

  4.200%   07/29/2025   07/29/2025   365,810,000   364,617,543
U.S. Treasury Bills (a)

  4.200%   08/05/2025   08/05/2025   431,710,000   429,947,184
U.S. Treasury Bills (a)

  4.203%   08/21/2025   08/21/2025   594,440,000   590,865,344
U.S. Treasury Bills (a)(b)

  4.208%   10/28/2025   10/28/2025   35,130,000   34,641,408
U.S. Treasury Bills (a)

  4.220%   10/14/2025   10/14/2025   233,680,000   230,803,789
U.S. Treasury Bills (a)

  4.235%   10/21/2025   10/21/2025   331,570,000   327,201,381
U.S. Treasury Bills (a)

  4.248%   09/16/2025   09/16/2025   592,980,000   587,597,480
U.S. Treasury Bills (a)

  4.250%   09/11/2025   09/11/2025   29,700,000   29,447,550
U.S. Treasury Bills (a)

  4.394%   08/19/2025   08/19/2025   200,721,000   199,520,543
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.10% (c)

  4.379%   07/01/2025   01/31/2027   1,975,844,000   1,975,789,372
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.13% (c)

  4.406%   07/01/2025   07/31/2025   477,000,000   476,998,758
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.17% (c)

  4.410%   07/01/2025   10/31/2025   298,902,000   298,862,717
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.15% (c)

  4.431%   07/01/2025   04/30/2026   888,000,000   888,093,228
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.16% (c)

  4.441%   07/01/2025   04/30/2027   494,500,000   494,501,476
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.18% (c)

  4.463%   07/01/2025   07/31/2026   1,079,190,000   1,078,388,195
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.21% (c)

  4.486%   07/01/2025   10/31/2026   1,811,210,000   1,811,464,888
U.S. Treasury Floating Rate Notes, 3 mo. Treasury money market yield + 0.25% (c)

  4.526%   07/01/2025   01/31/2026   230,698,000   230,720,471
U.S. Treasury Notes

  4.016%   04/30/2026   04/30/2026   284,630,000   286,394,568
U.S. Treasury Notes

  4.016%   04/30/2026   04/30/2026   515,458,000   501,489,380
U.S. Treasury Notes

  4.099%   03/31/2026   03/31/2026   201,330,000   201,851,592
U.S. Treasury Notes

  4.100%   03/31/2026   03/31/2026   582,478,000   568,106,690
U.S. Treasury Notes

  4.179%   05/15/2026   05/15/2026   145,420,000   144,723,445
See accompanying notes to financial statements.
1

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
U.S. Treasury Notes

  4.192%   12/31/2025   12/31/2025   $137,770,000   $137,803,709
U.S. Treasury Notes

  4.197%   12/31/2025   12/31/2025   21,200,000   20,805,251
U.S. Treasury Notes

  4.206%   05/15/2026   05/15/2026   33,560,000   32,827,474
U.S. Treasury Notes

  4.254%   02/28/2026   02/28/2026   178,420,000   178,840,259
U.S. Treasury Notes

  4.292%   08/15/2025   08/15/2025   910,403,000   907,873,487
U.S. Treasury Notes

  4.294%   02/28/2026   02/28/2026   55,960,000   54,597,129
U.S. Treasury Notes

  4.297%   09/30/2025   09/30/2025   61,430,000   61,533,415
U.S. Treasury Notes

  4.298%   09/30/2025   09/30/2025   253,105,000   250,615,187
U.S. Treasury Notes

  4.313%   10/31/2025   10/31/2025   44,460,000   43,875,175
U.S. Treasury Notes

  4.332%   10/31/2025   10/31/2025   44,180,000   44,275,454
U.S. Treasury Notes

  4.342%   11/30/2025   11/30/2025   41,440,000   41,528,004
U.S. Treasury Notes

  4.436%   07/31/2025   07/31/2025   588,315,000   586,341,783
U.S. Treasury Notes

  4.438%   07/31/2025   07/31/2025   85,720,000   85,739,775
U.S. Treasury Notes

  5.024%   07/15/2025   07/15/2025   119,110,000   119,020,919
TOTAL TREASURY DEBT

                  32,998,451,989
TREASURY REPURCHASE AGREEMENTS—39.3%                    
Agreement with Australia and New Zealand Banking Group, dated 06/30/2025 (collateralized by U.S. Treasury Notes, 0.500% – 4.625% due 08/15/2026 – 08/15/2054, valued at $917,711,752); expected proceeds $900,110,000

  4.400%   07/01/2025   07/01/2025   900,000,000   900,000,000
Agreement with Bank of America and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Strips, 0.000% due 05/15/2047 - 02/15/2054, valued at $91,800,001); expected proceeds $90,010,975

  4.390%   07/01/2025   07/01/2025   90,000,000   90,000,000
Agreement with Bank of Montreal and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Bonds, 1.875% - 6.625% due 02/15/2027 - 02/15/2051, valued at $76,500,041); expected proceeds $75,009,125

  4.380%   07/01/2025   07/01/2025   75,000,000   75,000,000
Agreement with Bank of Nova Scotia and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Bills, 0.000% due 07/03/2025 - 11/20/2025, U.S. Treasury Bonds, 2.000% - 4.750% due 05/15/2039 - 05/15/2055, U.S. Treasury Inflation Index Bonds, 0.750% - 2.375% due 02/15/2042 - 02/15/2055, U.S. Treasury Inflation Index Notes, 0.125% - 2.375% due 04/15/2027 - 01/15/2035 and U.S. Treasury Notes, 0.500% - 4.625% due 11/15/2025 - 05/15/2035, valued at $606,900,023); expected proceeds $595,072,557

  4.390%   07/01/2025   07/01/2025   595,000,000   595,000,000
Agreement with Barclays Capital, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Inflation Index Notes, 1.375% - 1.875% due 07/15/2033 - 07/15/2034, valued at $25,500,075); expected proceeds $25,003,049

  4.390%   07/01/2025   07/01/2025   25,000,000   25,000,000
Agreement with BNP Paribas and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Inflation Index Note, 1.875% due 07/15/2034, a U.S. Treasury Note, 4.250% due 02/28/2029, U.S. Treasury Inflation Index Bonds, 1.000% - 1.500% due 02/15/2049 - 02/15/2053 and U.S. Treasury Strips, 0.000% due 05/15/2031 - 05/15/2055, valued at $153,000,000); expected proceeds $150,018,292

  4.390%   07/01/2025   07/01/2025   150,000,000   150,000,000
See accompanying notes to financial statements.
2

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with Citigroup Global Markets, Inc. and Bank of New York Mellon (Tri-Party), dated 03/19/2025 (collateralized by a U.S. Treasury Inflation Index Note, 2.125% due 04/15/2029 and U.S. Treasury Notes, 1.750% - 4.250% due 01/31/2029 - 03/31/2029, valued at $204,083,507); expected proceeds $202,886,667 (d)

  4.330%   07/17/2025   07/17/2025   $200,000,000   $200,000,000
Agreement with Citigroup Global Markets, Inc. and Bank of New York Mellon (Tri-Party), dated 05/16/2025 (collateralized by a U.S. Treasury Bond, 5.375% due 02/15/2031 and U.S. Treasury Notes, 0.875% - 4.250% due 08/31/2030 - 09/30/2031, valued at $204,202,191); expected proceeds $202,882,445 (d)

  4.360%   09/12/2025   09/12/2025   200,000,000   200,000,000
Agreement with Citigroup Global Markets, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Notes, 3.125% - 3.500% due 08/31/2027 - 09/30/2029, valued at $464,100,075); expected proceeds $455,055,485

  4.390%   07/01/2025   07/01/2025   455,000,000   455,000,000
Agreement with Credit Agricole Corporate and Investment Bank and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Notes, 4.125% - 4.625% due 09/15/2026 - 11/15/2027, valued at $132,600,060); expected proceeds $130,015,853

  4.390%   07/01/2025   07/01/2025   130,000,000   130,000,000
Agreement with Deutsche Bank and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Strip, 0.000% due 08/15/2029 and U.S. Treasury Bonds, 2.000% - 2.750% due 11/15/2047 - 08/15/2051, valued at $193,800,000); expected proceeds $190,023,169

  4.390%   07/01/2025   07/01/2025   190,000,000   190,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 05/06/2025 (collateralized by U.S. Treasury Bills, 0.000% due 05/14/2026, U.S. Treasury Bonds, 3.500% - 5.250% due 02/15/2029 - 08/15/2039 and U.S. Treasury Notes, 0.500% - 4.500% due 10/31/2025 - 11/15/2033, valued at $510,000,098); expected proceeds $507,173,056 (d)

  4.340%   09/02/2025   09/02/2025   500,000,000   500,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Bond, 5.375% due 02/15/2031, U.S. Treasury Bills, 0.000% due 07/10/2025 and U.S. Treasury Notes, 4.000% - 4.125% due 10/31/2029 - 02/28/2030, valued at $790,500,022); expected proceeds $775,094,292

  4.380%   07/01/2025   07/01/2025   775,000,000   775,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Note, 4.250% due 06/30/2031, valued at $153,000,012); expected proceeds $150,018,333

  4.400%   07/01/2025   07/01/2025   150,000,000   150,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Bills, 0.000% due 07/08/2025 - 02/19/2026, a U.S. Treasury Bond, 6.875% due 08/15/2025 and U.S. Treasury Notes, 0.250% - 5.000% due 09/30/2025 - 10/31/2028, valued at $2,040,000,087); expected proceeds $2,000,243,889

  4.390%   07/01/2025   07/01/2025   2,000,000,000   2,000,000,000
See accompanying notes to financial statements.
3

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Bills, 0.000% due 07/08/2025 - 05/14/2026, U.S. Treasury Bonds, 1.375% - 6.625% due 02/15/2027 - 08/15/2052 and U.S. Treasury Notes, 0.625% - 4.625% due 01/31/2026 - 02/15/2034, valued at $2,346,000,092); expected proceeds $2,300,281,111

  4.400%   07/01/2025   07/01/2025   $2,300,000,000   $2,300,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Inflation Index Notes, 1.125% - 1.750% due 01/15/2033 - 01/15/2034, valued at $2,550,000,072); expected proceeds $2,500,304,861

  4.390%   07/01/2025   07/01/2025   2,500,000,000   2,500,000,000
Agreement with Fixed Income Clearing Corp. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Notes, 0.625% - 3.875% due 05/31/2027 - 08/15/2030, valued at $408,000,024); expected proceeds $400,049,000

  4.410%   07/01/2025   07/01/2025   400,000,000   400,000,000
Agreement with Fixed Income Clearing Corp. and Northern Trust (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Notes, 1.250% - 3.625% due 05/31/2028, valued at $255,621,173); expected proceeds $250,030,417

  4.380%   07/01/2025   07/01/2025   250,000,000   250,000,000
Agreement with Fixed Income Clearing Corp., dated 06/30/2025 (collateralized by U.S. Treasury Notes, 1.625% – 4.75% due 11/30/2026 – 05/15/2055, valued at $2,038,997,232); expected proceeds $2,000,244,444

  4.400%   07/01/2025   07/01/2025   2,000,000,000   2,000,000,000
Agreement with Goldman Sachs & Co. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Bond, 3.000% due 05/15/2045, U.S. Treasury Notes, 2.250% - 3.375% due 09/15/2027 - 11/15/2027 and U.S. Treasury Strips, 0.000% due 11/15/2026 - 05/15/2048, valued at $1,102,620,002); expected proceeds $1,081,131,822

  4.390%   07/01/2025   07/01/2025   1,081,000,000   1,081,000,000
Agreement with HSBC Securities USA, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Bonds, 1.750% - 4.750% due 08/15/2041 - 11/15/2053, U.S. Treasury Inflation Index Bonds, 1.000% - 2.125% due 02/15/2041 - 02/15/2048, U.S. Treasury Notes, 0.250% - 5.000% due 08/31/2025 - 05/31/2027 and U.S. Treasury Strips, 0.000% due 08/15/2025 - 02/15/2027, valued at $851,700,001); expected proceeds $835,101,824

  4.390%   07/01/2025   07/01/2025   835,000,000   835,000,000
Agreement with JP Morgan Securities, Inc. and Bank of New York Mellon (Tri-Party), dated 06/23/2025 (collateralized by a U.S. Treasury Note, 4.500% due 11/15/2033, valued at $122,400,007); expected proceeds $120,205,333

  4.400%   07/01/2025   07/07/2025   120,000,000   120,000,000
Agreement with JP Morgan Securities, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Bonds, 3.000% - 4.750% due 02/15/2041 - 02/15/2053, valued at $2,282,760,053); expected proceeds $2,238,272,912

  4.390%   07/01/2025   07/01/2025   2,238,000,000   2,238,000,000
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with Mitsubishi UFJ Securities, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Bills, 0.000% due 07/15/2025 - 12/26/2025, U.S. Treasury Bonds, 1.375% - 4.750% due 05/15/2040 - 05/15/2055, U.S. Treasury Inflation Index Bonds, 0.125% - 1.500% due 02/15/2044 - 02/15/2053, U.S. Treasury Inflation Index Notes, 0.125% - 1.375% due 07/15/2025 - 07/15/2033 and U.S. Treasury Notes, 0.250% - 4.875% due 09/30/2025 - 05/15/2035, valued at $510,000,023); expected proceeds $500,060,972

  4.390%   07/01/2025   07/01/2025   $500,000,000   $500,000,000
Agreement with Mitsubishi UFJ Securities, Inc., dated 06/30/2025 (collateralized by U.S. Treasury Inflation Index Notes, 0.125% – 3.875% due 07/15/2025 – 02/15/2047 and U.S. Treasury Notes, 1.125% – 4.750% due 05/15/2040 – 05/15/2054, valued at $1,085,406,564); expected proceeds $1,065,129,871

  4.390%   07/01/2025   07/01/2025   1,065,000,000   1,065,000,000
Agreement with Mizuho Securities USA, Inc. and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Notes, 2.625% - 3.750% due 04/30/2027 - 07/31/2029, valued at $255,031,173); expected proceeds $250,030,486

  4.390%   07/01/2025   07/01/2025   250,000,000   250,000,000
Agreement with National Australia Bank, Ltd., dated 06/30/2025 (collateralized by a U.S. Treasury Note, 2.250% due 08/15/2027, valued at $254,914,155); expected proceeds $250,030,417

  4.380%   07/01/2025   07/01/2025   250,000,000   250,000,000
Agreement with Prudential Insurance Co., dated 06/30/2025 (collateralized by U.S. Treasury Notes, 2.250% – 4.125% due 11/30/2031 – 11/15/2052 and U.S. Treasury Strips, 0.000% due 02/15/2030 – 11/15/2044, valued at $139,886,991); expected proceeds $136,909,412

  4.400%   07/01/2025   07/01/2025   136,892,681   136,892,681
Agreement with Prudential Insurance Co., dated 06/30/2025 (collateralized by U.S. Treasury Notes, 3.000% – 3.125% due 08/15/2044 – 18/15/2048 and U.S. Treasury Strips, 0.000% due 08/15/2039 – 11/15/2052, valued at $317,629,254); expected proceeds $309,081,522

  4.400%   07/01/2025   07/01/2025   309,043,750   309,043,750
Agreement with Royal Bank of Canada and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Bond, 4.625% due 05/15/2044, a U.S. Treasury Strip, 0.000% due 05/15/2029, U.S. Treasury Bills, 0.000% due 07/03/2025, U.S. Treasury Inflation Index Bonds, 0.750% - 2.125% due 02/15/2041 - 02/15/2053, U.S. Treasury Inflation Index Notes, 0.875% - 1.875% due 04/15/2028 - 07/15/2034 and U.S. Treasury Notes, 0.375% - 4.875% due 11/30/2025 - 08/31/2031, valued at $525,300,000); expected proceeds $515,062,658

  4.380%   07/01/2025   07/01/2025   515,000,000   515,000,000
Agreement with Royal Bank of Canada and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Notes, 1.500% - 4.250% due 01/31/2027 - 04/30/2028, valued at $561,000,003); expected proceeds $550,067,222

  4.400%   07/01/2025   07/01/2025   550,000,000   550,000,000
Agreement with Societe Generale and Bank of New York Mellon (Tri-Party), dated 03/26/2025 (collateralized by U.S. Treasury Bonds, 1.250% - 6.625% due 02/15/2026 - 02/15/20535, valued at $255,000,031); expected proceeds $253,608,333 (d)

  4.330%   07/24/2025   07/24/2025   250,000,000   250,000,000
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Name of Issuer and Title of Issue   Interest Rate   Next Rate Reset Date   Maturity Date   Principal Amount   Value
Agreement with Societe Generale and Bank of New York Mellon (Tri-Party), dated 04/01/2025 (collateralized by a U.S. Treasury Note, 3.750% due 06/30/2027 and U.S. Treasury Bonds, 1.375% - 6.875% due 08/15/2025 - 02/15/2055, valued at $255,000,009); expected proceeds $253,608,333 (d)

  4.330%   07/30/2025   07/30/2025   $250,000,000   $250,000,000
Agreement with Societe Generale and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Bond, 4.375% due 08/15/2043, valued at $20,400,090); expected proceeds $20,002,439

  4.390%   07/01/2025   07/01/2025   20,000,000   20,000,000
Agreement with Standard Chartered Bank and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by a U.S. Treasury Inflation Index Bond, 2.000% due 01/15/2026, U.S. Treasury Bills, 0.000% due 07/10/2025, U.S. Treasury Bonds, 1.875% - 4.750% due 11/15/2041 - 05/15/2055, U.S. Treasury Inflation Index Notes, 0.125% - 1.875% due 07/15/2026 - 07/15/2034 and U.S. Treasury Notes, 0.375% - 4.875% due 12/31/2025 - 05/15/2034, valued at $657,900,016); expected proceeds $645,078,654

  4.390%   07/01/2025   07/01/2025   645,000,000   645,000,000
Agreement with Toronto Dominion Bank and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Notes, 0.375% - 4.875% due 02/28/2026 - 07/31/2027, valued at $51,000,065); expected proceeds $50,006,111

  4.400%   07/01/2025   07/01/2025   50,000,000   50,000,000
Agreement with UBS Securities LLC and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Bills, 0.000% due 07/08/2025 - 11/20/2025, U.S. Treasury Bonds, 1.375% - 6.125% due 11/15/2027 - 05/15/2051, U.S. Treasury Inflation Index Bonds, 0.875% - 3.875% due 01/15/2028 - 02/15/2049, U.S. Treasury Inflation Index Notes, 0.125% - 1.625% due 10/15/2029 - 07/15/2031, U.S. Treasury Notes, 0.250% - 5.000% due 07/31/2025 - 06/30/2032 and U.S. Treasury Strips, 0.000% due 02/15/2026 - 02/15/2037, valued at $122,400,002); expected proceeds $120,014,633

  4.390%   07/01/2025   07/01/2025   120,000,000   120,000,000
Agreement with Wells Fargo Bank and Bank of New York Mellon (Tri-Party), dated 06/30/2025 (collateralized by U.S. Treasury Inflation Index Bonds, 0.125% - 2.375% due 02/15/2040 - 02/15/2055 and U.S. Treasury Inflation Index Notes, 0.125% - 2.375% due 10/15/2025 - 01/15/2035, valued at $510,062,192); expected proceeds $500,060,972

  4.390%   07/01/2025   07/01/2025   500,000,000   500,000,000
TOTAL TREASURY REPURCHASE AGREEMENTS

                  23,569,936,431
TOTAL INVESTMENTS (e)(f)–94.3%

                  56,568,388,420
Other Assets in Excess of Liabilities —5.7%

                  3,401,589,596
NET ASSETS –100.0%

                  $59,969,978,016
(a) Rate shown is the discount rate at time of purchase.
(b) When-issued security.
(c) Variable Rate Security - Interest rate shown is rate in effect at June 30, 2025. For securities based on a published reference rate and spread, the reference rate and spread are indicated in the description above.
(d) Illiquid security. These securities represent $1,400,000,000 or 2.3% of net assets as of June 30, 2025.
(e) Also represents the cost for federal tax purposes.
(f) Unless otherwise indicated, the values of the securities of the Portfolio are determined based on Level 2 inputs (Note 3).
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
STATEMENT OF ASSETS AND LIABILITIES
June 30, 2025 (Unaudited)

ASSETS  
Investments in unaffiliated issuers, at value and amortized cost.

$32,998,451,989
Repurchase agreements, at value and amortized cost

23,569,936,431
Total Investments

56,568,388,420
Cash

5,019,124,565
Receivable for investments sold

220,498,453
Interest receivable — unaffiliated issuers

90,054,947
Other receivable

994,699
TOTAL ASSETS

61,899,061,084
LIABILITIES  
Payable for investments purchased

1,924,885,643
Advisory and administrator fee payable

2,400,656
Custody, sub-administration and transfer agent fees payable

1,609,967
Trustees’ fees and expenses payable

12,515
Professional fees payable

100,702
Printing fees payable

30,257
Accrued expenses and other liabilities

43,328
TOTAL LIABILITIES

1,929,083,068
NET ASSETS

$59,969,978,016
See accompanying notes to financial statements.
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Table of Contents
STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
STATEMENT OF OPERATIONS
For the Six Months Ended June 30, 2025 (Unaudited)

INVESTMENT INCOME  
Interest income — unaffiliated issuers

1,238,519,922
EXPENSES  
Advisory and administrator fee

14,104,285
Custodian, sub-administrator and transfer agent fees

1,693,076
Trustees’ fees and expenses  

129,250
Professional fees

184,875
Printing and postage fees

29,355
Insurance expense

7,519
Miscellaneous expenses

12,927
TOTAL EXPENSES

16,161,287
NET INVESTMENT INCOME (LOSS)

$1,222,358,635
REALIZED GAIN (LOSS)  
Net realized gain (loss) on:  
Investments — unaffiliated issuers

28,483
NET INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS

$1,222,387,118
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
STATEMENTS OF CHANGES IN NET ASSETS

  Six Months
Ended
6/30/25
(Unaudited)
  Year Ended
12/31/24
INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS:      
Net investment income (loss)

$1,222,358,635   $2,558,755,151
Net realized gain (loss)

28,483   (61,195)
Net increase (decrease) in net assets resulting from operations

1,222,387,118   2,558,693,956
CAPITAL TRANSACTIONS      
Contributions

124,467,259,923   217,367,694,672
Withdrawals

(122,235,077,982)   (209,524,911,840)
Net increase (decrease) in net assets from capital transactions

2,232,181,941   7,842,782,832
Net increase (decrease) in net assets during the period

3,454,569,059   10,401,476,788
Net assets at beginning of period

56,515,408,957   46,113,932,169
NET ASSETS AT END OF PERIOD

$59,969,978,016   $56,515,408,957
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
FINANCIAL HIGHLIGHTS
Selected data for a share outstanding throughout each period

  Six Months
Ended
6/30/25
(Unaudited)
  Year
Ended
12/31/24
  Year
Ended
12/31/23
  Year
Ended
12/31/22
  Year
Ended
12/31/21
  Year
Ended
12/31/20
Total return (a)

2.14%   5.30%   5.17%   1.65%   0.01%   0.46%
Ratios and Supplemental Data:                      
Net assets, end of period (in 000s)

$59,969,978   $56,515,409   $46,113,932   $43,687,095   $27,061,311   $28,049,358
Ratios to average net assets:                      
Total expenses

0.06%(b)   0.06%   0.06%   0.06%   0.06%   0.06%
Net investment income (loss)

4.31%(b)   5.14%   5.01%   1.91%   0.01%   0.41%
(a) Results represent past performance and are not indicative of future results. Total return for periods of less than one year are not annualized.
(b) Annualized.
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS
June 30, 2025 (Unaudited)

1.    Organization
State Street Master Funds (the “Trust”), a Massachusetts business trust registered under the Investment Company Act of 1940, as amended (“1940 Act”), is an open-end management investment company.
As of June 30, 2025, the Trust consists of four (4) series, each of which represents a separate series of beneficial interest in the Trust. State Street Treasury Plus Money Market Portfolio (the “Portfolio”) is authorized to issue an unlimited number of shares of beneficial interest with no par value. The financial statements herein relate only to the Portfolio.
The Portfolio operates as a “government money market fund” within the meaning of Rule 2a-7 under the 1940 Act to comply with the amendments to Rule 2a-7. The Portfolio is not currently subject to liquidity fees during periods of high illiquidity in the markets for the investments it holds.
Under the Trust’s organizational documents, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust. Additionally, in the normal course of business, the Trust enters into contracts with service providers that contain general indemnification clauses. The Trust’s maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Trust that have not yet occurred.
2.    Segment Reporting
The Portfolio has one reportable segment. Business activities are managed on a consolidated basis and revenues are derived primarily through the Portfolio's investments in accordance with its investment objective. The Portfolio’s chief operating decision maker (“CODM”) is the President of the Trust. The CODM assesses performance based on the Portfolio’s Total Return as reported in the Financial Highlights, and the same accounting policies are applied as described in the summary of significant accounting policies. The Portfolio’s Total Return is utilized by the CODM to compare results, including the impact of the Portfolio’s costs, to the Portfolio’s competitors and to the Portfolio’s benchmark index.
3.    Summary of Significant Accounting Policies
The following is a summary of significant accounting policies followed by the Trust in the preparation of its financial statements:
The preparation of financial statements in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates. The Portfolio is an investment company under U.S. GAAP and follows the accounting and reporting guidance applicable to investment companies.
Security Valuation
The investments of the Portfolio are valued pursuant to the policy and procedures developed by the Oversight Committee (the “Committee”) and approved by the Board of Trustees of the Trust (the “Board”). The Committee provides oversight of the valuation of investments for the Portfolio. The Board has responsibility for overseeing the determination of the fair value of investments.
The Portfolio’s securities are recorded on the basis of amortized cost which approximates fair value as permitted by Rule 2a-7 under the 1940 Act. This method values a security at its cost on the date of purchase and, thereafter, assumes a constant amortization to maturity of any premiums or accretion of any discounts.
Because of the inherent uncertainties of valuation and under certain market conditions, the values reflected in the financial statements may differ from the value received upon actual sale of those investments and it is possible that the differences could be material.
Various inputs are used in determining the value of the Portfolio’s investments. The Portfolio values its assets and liabilities at fair value using a fair value hierarchy consisting of three broad levels that prioritize the inputs to valuation techniques giving the highest priority to readily available unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements) when market prices are not readily available or reliable. The categorization of a value determined for an investment within the hierarchy is based upon the pricing transparency of the investment and is not necessarily an indication of the risk associated with investing in it.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

The three levels of the fair value hierarchy are as follows:
•  Level 1 – Unadjusted quoted prices in active markets for an identical asset or liability;
•  Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability either directly or indirectly, including quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not considered to be active, inputs other than quoted prices that are observable for the asset or liability (such as exchange rates, financing terms, interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs; and
•  Level 3 – Unobservable inputs for the asset or liability, including the Committee’s assumptions used in determining the fair value of investments.
Investment Transactions and Income Recognition
Investment transactions are accounted for on trade date for financial reporting purposes. Realized gains and losses from the sale or disposition of investments are determined using the identified cost method. Interest income is recorded daily on an accrual basis. All premiums and discounts are amortized/accreted for financial reporting purposes.
All of the net investment income and realized gains and losses from the security transactions of the Portfolio are allocated pro rata among the partners in the Portfolio on a daily basis based on each partner’s daily ownership percentage.
Expenses
Certain expenses, which are directly identifiable to a specific Portfolio, are applied to that Portfolio within the Trust. Other expenses which cannot be attributed to a specific Portfolio are allocated in such a manner as deemed equitable, taking into consideration the nature and type of expense and the relative net assets of the Portfolio within the Trust.
4.    Securities and Other Investments
Repurchase Agreements
The Portfolio may enter into repurchase agreements under the terms of a Master Repurchase Agreement. A repurchase agreement customarily obligates the seller at the time it sells securities to the Portfolio to repurchase the securities at a mutually agreed upon price and time. During the term of a repurchase agreement, the value of the underlying securities held as collateral on behalf of  the Portfolio including accrued interest, is required to exceed the value of the repurchase agreement, including accrued interest.
The Portfolio monitors, on a daily basis, the value of the collateral to ensure it is at least equal to the Portfolio’s principal amount of the repurchase agreement (including accrued interest). The underlying securities are ordinarily United States Government or Government Agency securities, but may consist of other securities. The use of repurchase agreements involves certain risks including counterparty risks. In the event of a default by the counterparty, realization of the collateral proceeds could be delayed, during which the value of the collateral may decline. 
As of June 30, 2025, the Portfolio had invested in repurchase agreements with the gross values of $23,569,936,431 and associated collateral equal to $24,042,727,168.
5.    Fees and Transactions with Affiliates
Advisory and Administrator Fee
The Trust has entered into an investment advisory agreement with SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”), a subsidiary of State Street Corporation and an affiliate of State Street Bank and Trust Company (“State Street”), under which the Adviser directs the investments of the Portfolio in accordance with its investment objective, policies, and limitations. In compensation for the Adviser’s services as investment adviser, the Portfolio pays the Adviser a management fee at an annual rate of 0.05% of its average daily net assets. SSGA FM also serves as administrator.
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STATE STREET MASTER FUNDS
STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

Each of the Adviser and State Street Global Advisors Funds Distributors, LLC (each a “Service Provider”) also may voluntarily reduce all or a portion of its fees and/or reimburse expenses for the Portfolio to the extent necessary to maintain a certain minimum net yield, which may vary from time to time, in SSGA FM’s sole discretion (any such waiver or reimbursement of expenses by a Service Provider being referred to herein as a “Voluntary Reduction”). The Adviser may, in its sole discretion, implement the Voluntary Reduction for some series of the Trust and not others. The amount of any Voluntary Reduction may differ between such series in the Adviser's sole discretion. The business objectives of the Adviser and its affiliates and their broader relationships with certain Portfolio shareholders, Financial Intermediaries or distribution channels could give the Adviser an incentive to implement the Voluntary Reduction for some series of the Trust and not others, or to implement it to a greater degree for some series or share classes than others. Under an agreement with the Service Providers relating to the Voluntary Reduction, the Portfolio has agreed to reimburse the Service Providers for the full dollar amount of any Voluntary Reduction beginning on May 1, 2020, subject to certain limitations. Each Service Provider may, in its sole discretion, irrevocably waive receipt of any or all reimbursement amounts due from the Portfolio.
A reimbursement to the Service Provider would increase fund expenses and may negatively impact a Portfolio's yield during such period. There is no guarantee that the Voluntary Reduction will be in effect at any given time or that a Portfolio will be able to avoid a negative yield.
There were no reimbursements for the period ended June 30, 2025.
Custodian, Sub-Administrator and Transfer Agent Fees
State Street serves as the custodian, sub-administrator and transfer agent to the Portfolio. For its services as custodian, sub-administrator and transfer agent, the Portfolio pays State Street an annual fee. The fees are accrued daily and paid monthly.
6.    Trustees’ Fees
The fees and expenses of the Trust's Trustees who are not “interested persons” of the Trust, as defined in the 1940 Act (“Independent Trustees”), are paid directly by the Portfolio. The Independent Trustees are reimbursed for travel and other out-of-pocket expenses in connection with meeting attendance and industry seminars.
7.    Income Tax Information
The Portfolio is not required to pay federal income taxes on its net investment income and net capital gains because it is treated as a partnership for federal income tax purposes. All interest, gains and losses of the Portfolio are deemed to have been “passed through” to the Portfolio’s partners in proportion to their holdings in the Portfolio, regardless of whether such items have been distributed by the Portfolio. Each partner is responsible for its tax liability based on its distributive share; therefore, no provision has been made for federal income taxes.
The Portfolio files federal and various state and local tax returns as required. No income tax returns are currently under examination. Generally, the federal returns are subject to examination by the Internal Revenue Service for a period of three years from date of filing, while the state returns may remain open for an additional year depending upon jurisdiction. As of December 31, 2024, SSGA FM has analyzed the Portfolio’s tax positions taken on tax returns for all open years and does not believe there are any uncertain tax positions that would require recognition of a tax liability.
As of June 30, 2025, the cost of investments for federal income tax purposes was substantially the same as the cost for financial reporting purposes.
8.    Risks
Concentration Risk
As a result of the Portfolio's ability to invest a large percentage of its assets in obligations of issuers within the same country, state, region, currency or economic sector, an adverse economic, business or political development may affect the value of the Portfolio's investments more than if the Portfolio was more broadly diversified.
Market, Credit and Counterparty Risk
In the normal course of business, the Portfolio trades securities and enters into financial transactions where risk of potential loss exists due to changes in global economic conditions and fluctuations of the market (market risk). Additionally, the Portfolio may also be exposed to counterparty risk in the event that an issuer or guarantor fails to perform or that an institution or entity with which the Portfolio has unsettled or open transactions defaults. The
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STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

value of securities held by the Portfolio may decline in response to certain events, including those directly involving the companies whose securities are owned by the Portfolio; conditions affecting the general economy; overall market changes; local, regional or global political, social or economic instability; and currency and interest rate and price fluctuations (credit risk).
Financial assets, which potentially expose the Portfolio to market, credit and counterparty risks, consist principally of investments and cash due from counterparties. The extent of the Portfolio’s exposure to market, credit and counterparty risks in respect to these financial assets approximates their value as recorded in the Portfolio’s Statement of Assets and Liabilities, less any collateral held by the Portfolio.
The Portfolio’s investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities markets. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Portfolio is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. Local, regional or global events such as war, acts of terrorism, the spread of infectious illness, such as COVID-19, or other public health issues, or other events could have a significant impact on the Portfolio and its investments.
9.    Subsequent Events
Management has evaluated the impact of all subsequent events on the Portfolio through the date the financial statements were issued and has determined that there were no subsequent events requiring adjustment or disclosure in the financial statements.
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STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract
June 30, 2025 (Unaudited)

TRUSTEE CONSIDERATIONS IN APPROVING CONTINUATION OF INVESTMENT ADVISORY AGREEMENT1
Overview of the Contract Review Process
Under the Investment Company Act of 1940, as amended (the “1940 Act”), an investment advisory agreement between a mutual fund and its investment adviser may continue in effect from year to year only if its continuance is approved at least annually by the fund’s board of trustees or its shareholders, and by a vote of a majority of those trustees who are not “interested persons” of the fund (the “Independent Trustees”) cast in person at a meeting called for the purpose of considering such approval.
Consistent with these requirements, the Board of Trustees (the “Board”) of the State Street Master Funds (the “Trust”), met in person on April 2, 2025 and May 7-8, 2025, including in executive sessions attended by the Independent Trustees, to consider a proposal to approve, with respect to the State Street Treasury Plus Money Market Portfolio (the “Portfolio”), the continuation of the investment advisory agreement (the “Advisory Agreement”) with SSGA Funds Management, Inc. (“SSGA FM” or the “Adviser”).  Prior to voting on the proposal, the Independent Trustees reviewed information furnished by the Adviser and others reasonably necessary to permit the Board to evaluate the proposal fully.  The Independent Trustees were separately represented by counsel who are independent of the Adviser (“Independent Counsel”) in connection with their consideration of approval of the Advisory Agreement. In advance of the meetings held on April 2, 2025 and May 7-8, 2025, the Independent Trustees met with their Independent Counsel on March 27, 2025, in a private session to review and discuss the information provided by the Adviser in connection with the proposal.  Following the April 2, 2025 meeting, the Independent Trustees submitted questions and requests for additional information to management, and considered management’s responses thereto prior to and at the May 7-8, 2025 meeting. The Independent Trustees considered, among other things, the following: 
Information about Performance, Expenses and Fees
A report prepared by an independent third-party provider of investment company data, which includes for the feeder fund for which the Portfolio serves as the master fund in a master-feeder structure (the “Fund”):
o Comparisons of the Fund’s performance over the past one-, three-, five- and ten-year periods ended December 31, 2024, to the performance of an appropriate benchmark provided by Broadridge Financial Solutions, Inc. (“Broadridge”) for the Fund (the “Benchmark”) and/or a universe of other mutual funds with similar investment objectives and policies (the “Performance Group” and/or the “Performance Universe”) constructed by Broadridge;
o Comparisons of the Fund’s expense ratio (with detail of component expenses) to the expense ratios of a group of comparable mutual funds selected by the independent third-party data provider (the “Expense Group” and/or “Expense Universe”);
o A chart showing the Fund’s historical average net assets relative to its total expenses, management fees, and non-management expenses over the past five calendar years; and
o Comparisons of the Fund’s contractual management fee to the contractual management fees of comparable mutual funds at different asset levels.
____________________________
1Over the course of many years overseeing the Portfolio and other investment companies, the Independent Trustees have identified numerous relevant issues, factors and concerns ("issues, factors and concerns") that they consider each year in connection with the proposed continuation of the advisory agreements, the administration agreement, the distribution plans, the distribution agreement and various related-party service agreements (the "annual review process").  The statement of issues, factors and concerns and the related conclusions of the Independent Trustees may not change substantially from year to year.  However, the information requested by, and provided to, the Independent Trustees with respect to the issues, factors and concerns and on which their conclusions are based is updated annually and, in some cases, may differ substantially from the previous year.  The Independent Trustees schedule annually a separate in-person meeting that is dedicated to the annual review process (the "special meeting").  At the special meeting and throughout the annual review process, the Independent Trustees take a fresh look at each of the issues, factors and concerns in light of the latest available information and each year present one or more sets of comments and questions to management with respect to specific issues, factors and concerns.  Management responds to such comments and questions to the satisfaction of the Independent Trustees before the annual review process is completed and prior to the Independent Trustees voting on proposals to approve continuation of the agreements and plans
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STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

Comparative information concerning fees charged by the Adviser for managing institutional accounts using investment strategies and techniques similar to those used in managing the Fund; and
  Profitability analyses for (a) the Adviser with respect to the Portfolio and (b) affiliates of the Adviser that provide services to the Portfolio (“Affiliated Service Providers”).
Information about Portfolio Management
Descriptions of the investment management services provided by the Adviser, including its investment strategies and processes;
Information concerning the allocation of brokerage; and
Information regarding the procedures and processes used to value the assets of the Portfolio.
Information about the Adviser
Reports detailing the financial results and condition of the Adviser and its affiliates;
Descriptions of the qualifications, education and experience of the individual investment and other professionals responsible for managing the portfolio of the Portfolio and for Portfolio operations;
Information relating to compliance with and the administration of the Code of Ethics adopted by the Adviser;
Information about the Adviser’s proxy voting policies and procedures and information regarding the Adviser’s practices for overseeing proxy vendors;
  Information concerning the resources devoted by the Adviser to overseeing compliance by the Portfolio and its service providers, including information concerning compliance with investment policies and restrictions and other operating policies of the Portfolio;
A description of the adequacy and sophistication of the Adviser’s technology and systems with respect to investment and administrative matters and a description of any material improvements or changes in technology or systems in the past year;
A description of the business continuity and disaster recovery plans of the Adviser; and
Information regarding the Adviser’s risk management processes.
Other Relevant Information
Information concerning the nature, extent, quality and cost of services provided to the Portfolio by SSGA FM in its capacity as the Portfolio’s administrator (the “Administrator”);
Information concerning the nature, extent, quality and cost of various non-investment management services provided to the Portfolio by affiliates of the Adviser, including the custodian, sub-administrator, transfer agent and fund accountant of the Portfolio, and the role of the Adviser in managing the Portfolio’s relationship with these service providers;
Copies of the Advisory Agreement and agreements with other service providers of the Portfolio;
Responses to a request for information reviewed prior to the April 2, 2025 and May 7-8, 2025 meetings by Independent Counsel, requesting specific information from each of:
o SSGA FM, in its capacity as the Portfolio’s Adviser and Administrator, with respect to its operations relating to the Portfolio and its approximate profit margins from such operations for the calendar year ended December 31, 2024; and the relevant operations of other affiliated service providers to the Portfolio, together with their approximate profit margins from such relevant operations for the calendar year ended December 31, 2024;
o State Street Bank and Trust Company (“State Street”), the sub-administrator, custodian and transfer agent for the Portfolio, with respect to its operations relating to the Portfolio; and
o State Street Global Advisors Funds Distributors, LLC, the principal underwriter and distributor of the shares of the Portfolio (the “Distributor”), with respect to its operations relating to the Portfolio;
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STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

Information from SSGA FM, State Street and the Distributor with respect to the Trust providing any material changes to the previous information supplied in response to the letter from Independent Counsel prior to the executive session of the Board on May 7-8, 2025; and
Materials provided by Broadridge, circulated to the Independent Trustees and to Independent Counsel, with respect to the Fund.
In addition to the information identified above, the Board considered information provided from time to time by the Adviser, and other service providers of the Portfolio throughout the year at meetings of the Board and its committees.  At such meetings, the Trustees received, among other things, presentations by the portfolio managers and other investment professionals of the Adviser relating to the performance of the Portfolio and the investment strategies used in pursuing the Portfolio’s investment objective.
The Independent Trustees were assisted throughout the contract review process by their Independent Counsel.  The Independent Trustees relied upon the advice of such counsel and their own business judgment in determining the material factors to be considered in evaluating the Advisory Agreement, and the weight to be given to each such factor.  The conclusions reached with respect to the Advisory Agreement were based on a comprehensive evaluation of all the information provided and not any single factor.  Moreover, each Trustee may have placed varying emphasis on particular factors in reaching conclusions with respect to the Portfolio.
Results of the Process
Based on a consideration of the foregoing and such other information as deemed relevant, including the factors and conclusions described below, at the meeting held on May 7-8, 2025, the Board, including a majority of the Independent Trustees, voted to approve the continuation of the Advisory Agreement effective June 1, 2025, for an additional year with respect to the Portfolio.
Nature, Extent and Quality of Services
In considering whether to approve the Advisory Agreement, the Board evaluated the nature, extent and quality of services provided to the Portfolio by the Adviser.
The Board considered the Adviser’s management capabilities and investment process with respect to the types of investments held by the Portfolio, including the education, experience and number of investment professionals and other personnel who provide portfolio management, investment research, and similar services to the Portfolio.  The Board evaluated the abilities and experience of such investment personnel in analyzing particular markets, industries and specific issuers of securities in these markets and industries.  The Board also considered the substantial expertise of the Adviser in developing and applying proprietary quantitative models for managing various funds that invest primarily in money market instruments.  The Board considered the extensive experience and resources committed by the Adviser to risk management, including with respect to investment risk, liquidity risk, operational risk, counterparty risk and model risk.  Further, the Board considered material enhancements made to the risk management processes and systems over the past year.  The Trustees also considered the significant risks assumed by the Adviser in connection with the services provided to the Portfolio, including reputational and entrepreneurial risks.  The Board considered the Adviser’s success in maintaining the constant dollar value of the Portfolio through extraordinary market conditions.  The Board also took into account the compensation paid to recruit and retain investment personnel, and the time and attention devoted to the Portfolio by senior management, as well as the Adviser’s succession planning process.
The Board had previously reviewed the compliance programs of SSGA FM and various affiliated service providers.  Among other things, the Board considered compliance and reporting matters relating to personal trading by investment personnel, selective disclosure of portfolio holdings, late trading, frequent trading, portfolio valuation, business continuity, the allocation of investment opportunities and the voting of proxies.
On the basis of the foregoing and other relevant information, the Board concluded that the Adviser can be expected to continue to provide high quality investment management and related services for the Portfolio.
Portfolio Performance
The Board considered the Portfolio’s performance by evaluating the performance of the Fund.  The Board compared the Fund’s investment performance to the performance of an appropriate benchmark and universe of comparable mutual funds for various time periods ended December 31, 2024.  For purposes of these comparisons the Independent Trustees relied on the Performance Group, Performance Universe and Benchmark and the analyses of the related data provided by Broadridge. It was noted that while the Board found the Broadridge data
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Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

generally useful, they recognized its limitations, including that the data may vary depending on the end date selected and that the results of the performance comparisons may vary depending on the selection of the peer group and its composition over time.  The Board also noted that it had received and discussed with management information throughout the year at periodic intervals comparing the Fund’s performance against its benchmark and against the Fund’s peers.  The Board also considered the Fund’s performance in light of overall financial market conditions.  Among other information, the Board considered the following performance information in its evaluation of the Portfolio:
Money Market Funds, Generally.  The Board noted the relatively narrow range of returns in each Fund’s Performance Group and Performance Universe.  The Board also observed that several basis points of performance, whether from yield on portfolio investments or fees waived by service providers, accounted for substantial differences in performance relative to other funds in such Performance Group and Performance Universe during periods when preservation of capital and net asset value were generally considered by stockholders to have been more important than several basis points of yield.
State Street Institutional Treasury Plus Money Market Fund and State Street Treasury Plus Money Market Portfolio. The Board considered that the Fund’s performance was above the medians of its Performance Group and Performance Universe for the 1-, 3-, 5- and 10-year periods.  The Board also considered that the Fund’s performance was above the Benchmark for the 1-, 3-, 5- and 10-year periods.
On the basis of the foregoing and other relevant information, the Board concluded that the performance of the Portfolio is satisfactory.
Management Fees and Expenses
The Board reviewed the contractual investment advisory fee rates payable by the Portfolio and actual fees paid by the Fund, net of waivers.  As part of its review, the Board considered the Fund’s management fee and total expense ratio, including the portion attributable to administrative services provided by SSGA FM (both before and after giving effect to any expense caps), as compared to its Expense Group and Expense Universe, as constructed by Broadridge, and the related Broadridge analysis for the Fund.  The Board also considered the comparability of the fees charged and the services provided to the Fund by the Adviser to the fees charged and services provided to other clients of the Adviser, including institutional accounts.  The Board considered the investment advisory fee in the context of the overall master-feeder arrangement with the Fund.  Among other information, the Board considered the following expense information in its evaluation of the Portfolio:
State Street Institutional Treasury Plus Money Market Fund and State Street Treasury Plus Money Market Portfolio. The Board considered that the Fund’s actual management fee was below the medians of its Expense Group and Expense Universe.  The Board also considered that the Fund’s total expenses were below the medians of its Expense Group and Expense Universe.
On the basis of the foregoing and other relevant information, and in light of the nature, extent and quality of the services provided by the Adviser, the Board concluded that the fees and the expense ratio of the Fund compare favorably to the fees and expenses of the Expense Group and Expense Universe and the fees and the expense ratio of the Portfolio are reasonable in relation to the services provided.
Profitability
The Board reviewed the level of profits realized by the Adviser and its affiliates in providing investment advisory and other services to the Portfolio and to all funds within the fund complex.  The Board considered other direct and indirect benefits received by the Adviser and Affiliated Service Providers in connection with their relationships with the Portfolio, together with the profitability of each of the Affiliated Service Providers with respect to their services to the Portfolio and/or fund complex.  The Board also considered the various risks borne by SSGA FM and State Street in connection with their various roles in servicing the Trust, including reputational and entrepreneurial risks.
The Board concluded that the profitability of the Adviser with respect to the Portfolio, and the profitability range of each of the Affiliated Service Providers with respect to its services to the Portfolio, were reasonable in relation to the services provided.
Economies of Scale
In reviewing management fees and profitability, the Board also considered the extent to which the Adviser and its affiliates, on the one hand, and the Portfolio and the fund complex, on the other hand, can expect to realize benefits from economies of scale as the assets of the Portfolio and fund complex increase.  The Board
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STATE STREET TREASURY PLUS MONEY MARKET PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract  (continued)
June 30, 2025 (Unaudited)

acknowledged the difficulty in accurately measuring the benefits resulting from the economies of scale with respect to the management of the Portfolio or the fund complex taken as a whole.  The Board concluded that, in light of the current size of the Portfolio and the fund complex, the level of profitability of the Adviser and its affiliates with respect to the Portfolio and the fund complex over various time periods, and the comparative management fee and expense ratio of the Fund during these periods, it does not appear that the Adviser or its affiliates has realized benefits from economies of scale in managing the assets of the Portfolio to such an extent that previously agreed advisory fees should be reduced or that breakpoints in such fees should be implemented for the Portfolio at this time.
Conclusions
In reaching its decision to approve the Advisory Agreement, the Board did not identify any single factor as being controlling, but based its recommendation on each of the factors it considered.  Each Trustee may have contributed different weight to the various factors.  Based upon the materials reviewed, the representations made and the considerations described above, and as part of its deliberations, the Board, including the Independent Trustees, concluded that the Adviser possesses the capability and resources to perform the duties required of it under the Advisory Agreement.
Further, based upon its review of the Advisory Agreement, the materials provided, and the considerations described above, the Board, including the Independent Trustees, concluded that (1) the terms of the Advisory Agreement are reasonable, fair, and in the best interests of the Portfolio and its shareholders, and (2) the rates payable under the Advisory Agreement are fair and reasonable in light of the usual and customary charges made for services of the same nature and quality.
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Table of Contents
Semi-Annual Financial Statements and Other Information
June 30, 2025
State Street Master Funds
State Street International Developed Equity Index Portfolio

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TABLE OF CONTENTS (Unaudited)

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21
Changes in and Disagreements with Accountants for Open-End Management Investment Companies (N-CSR Item 8) - Not Applicable
Proxy Disclosures for  Open-End Management Investment Companies (N-CSR Item 9) - Not Applicable
Remuneration Paid to Directors, Officers, and Others of Open-End Management Investment Companies (N-CSR Item 10) - Please see Statement of Operations in the Financial Statements under Item 7 above

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
SCHEDULE OF INVESTMENTS
June 30, 2025 (Unaudited)

Security Description     Shares   Value
COMMON STOCKS — 98.7%          
AUSTRALIA — 6.8%  
ANZ Group Holdings Ltd.

  587,161   $11,220,652
APA Group Stapled Security

  259,687   1,390,419
Aristocrat Leisure Ltd.

  113,380   4,842,365
ASX Ltd.

  37,414   1,710,464
BHP Group Ltd.

  1,005,156   24,208,293
BlueScope Steel Ltd.

  91,093   1,379,616
Brambles Ltd.

  277,186   4,254,334
CAR Group Ltd.

  73,824   1,810,401
Cochlear Ltd.

  13,380   2,634,258
Coles Group Ltd.

  262,962   3,591,402
Commonwealth Bank of Australia

  330,205   39,979,877
Computershare Ltd.

  105,745   2,764,377
Evolution Mining Ltd.

  395,229   2,017,714
Fortescue Ltd.

  338,701   3,391,667
Glencore PLC (a)

  2,034,128   7,905,253
Goodman Group REIT

  398,055   8,932,031
Insurance Australia Group Ltd.

  447,372   2,647,463
Lottery Corp. Ltd.

  441,553   1,542,352
Macquarie Group Ltd.

  70,657   10,591,359
Medibank Pvt Ltd.

  512,135   1,694,920
National Australia Bank Ltd.

  607,193   15,662,288
Northern Star Resources Ltd.

  268,068   3,258,834
Origin Energy Ltd.

  327,000   2,312,291
Pro Medicus Ltd.

  10,723   2,003,348
Qantas Airways Ltd.

  128,634   905,385
QBE Insurance Group Ltd.

  301,516   4,621,830
REA Group Ltd. (b)

  10,667   1,681,174
Reece Ltd.

  48,540   456,483
Rio Tinto Ltd.

  72,406   5,083,455
Rio Tinto PLC

  224,022   13,031,656
Santos Ltd.

  648,969   3,257,812
Scentre Group REIT

  1,037,928   2,421,534
SGH Ltd.

  41,736   1,478,906
Sigma Healthcare Ltd.

  911,397   1,785,879
Sonic Healthcare Ltd.

  84,429   1,482,306
South32 Ltd.

  842,585   1,606,868
Stockland REIT

  481,795   1,692,390
Suncorp Group Ltd.

  213,928   3,029,673
Telstra Group Ltd.

  767,976   2,435,939
Transurban Group Stapled Security

  605,840   5,550,581
Vicinity Ltd. REIT

  700,127   1,133,306
Washington H Soul Pattinson & Co. Ltd. (b)

  50,349   1,386,171
Wesfarmers Ltd.

  223,614   12,419,727
Westpac Banking Corp.

  677,855   15,041,707
WiseTech Global Ltd.

  39,621   2,831,032
Woodside Energy Group Ltd.

  367,259   5,687,344
Woolworths Group Ltd.

  245,707   5,009,460
          255,776,596
AUSTRIA — 0.2%  
Erste Group Bank AG

  61,793   5,244,330
Security Description     Shares   Value
Mondi PLC

  80,471   $1,311,702
OMV AG (b)

  27,411   1,485,905
Verbund AG (b)

  14,316   1,094,835
          9,136,772
BELGIUM — 0.8%  
Ageas SA

  29,322   1,973,965
Anheuser-Busch InBev SA

  195,102   13,338,147
D'ieteren Group (b)

  4,423   947,009
Elia Group SA (b)

  9,688   1,111,638
Groupe Bruxelles Lambert NV

  17,513   1,486,316
KBC Group NV (b)

  46,043   4,737,808
Lotus Bakeries NV

  87   834,360
Sofina SA

  3,290   1,081,350
Syensqo SA (b)

  13,139   1,009,912
UCB SA

  24,353   4,772,559
          31,293,064
BRAZIL — 0.0% *  
Yara International ASA

  33,994   1,249,619
CHILE — 0.0% *  
Antofagasta PLC

  74,647   1,850,982
CHINA — 0.6%  
BOC Hong Kong Holdings Ltd.

  720,000   3,127,643
Prosus NV

  257,281   14,336,375
SITC International Holdings Co. Ltd.

  293,000   938,720
Wharf Holdings Ltd. (b)

  230,000   700,255
Wilmar International Ltd.

  385,400   868,447
Yangzijiang Shipbuilding Holdings Ltd.

  549,600   957,965
          20,929,405
DENMARK — 2.3%  
AP Moller - Maersk AS Class A (b)

  563   1,036,392
AP Moller - Maersk AS Class B (b)

  883   1,635,880
Carlsberg AS Class B (b)

  18,972   2,678,730
Coloplast AS Class B (b)

  24,151   2,285,981
Danske Bank AS (b)

  137,929   5,605,441
Demant AS (a) (b)

  16,592   689,702
DSV AS (b)

  40,127   9,609,065
Genmab AS (a)

  12,908   2,670,635
Novo Nordisk AS Class B (b)

  633,980   43,849,336
Novonesis Novozymes B Class B

  69,904   4,994,400
Orsted AS (a) (b) (c)

  32,759   1,401,939
Pandora AS

  15,832   2,769,940
Rockwool AS Class B

  20,370   949,946
Tryg AS (b)

  69,763   1,795,718
Vestas Wind Systems AS

  199,899   2,988,515
          84,961,620
FINLAND — 1.1%  
Elisa OYJ

  28,657   1,583,724
Fortum OYJ

  91,577   1,708,137
 
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Security Description     Shares   Value
Kesko OYJ Class B

  57,821   $1,421,264
Kone OYJ Class B

  68,554   4,496,780
Metso OYJ

  123,340   1,589,713
Neste OYJ

  80,830   1,093,043
Nokia OYJ

  1,056,494   5,464,166
Nordea Bank Abp (d)

  521,426   7,703,431
Nordea Bank Abp (d)

  101,782   1,506,602
Orion OYJ Class B

  19,878   1,489,862
Sampo OYJ Class A

  467,473   5,010,023
Stora Enso OYJ Class R (b)

  122,809   1,329,725
UPM-Kymmene OYJ

  102,248   2,779,750
Wartsila OYJ Abp

  97,527   2,294,220
          39,470,440
FRANCE — 9.4%  
Accor SA

  37,039   1,927,389
Aeroports de Paris SA

  7,553   943,351
Air Liquide SA

  114,530   23,545,993
Airbus SE

  117,085   24,362,643
Alstom SA (a)

  72,423   1,683,271
Amundi SA (c)

  10,973   884,901
Arkema SA

  11,768   864,057
AXA SA

  350,247   17,132,089
BioMerieux

  8,191   1,128,801
BNP Paribas SA

  201,218   18,026,756
Bollore SE

  142,165   889,472
Bouygues SA

  37,071   1,671,006
Bureau Veritas SA

  64,677   2,197,156
Capgemini SE

  31,477   5,359,490
Carrefour SA

  112,192   1,576,407
Cie de Saint-Gobain SA

  87,668   10,253,856
Cie Generale des Etablissements Michelin SCA

  134,110   4,965,183
Covivio SA REIT

  11,567   727,097
Credit Agricole SA

  209,316   3,947,258
Danone SA

  128,001   10,421,611
Dassault Aviation SA

  3,602   1,269,307
Dassault Systemes SE

  134,018   4,834,350
Edenred SE

  49,738   1,534,940
Eiffage SA

  13,277   1,858,535
Engie SA

  360,754   8,437,657
EssilorLuxottica SA

  58,287   15,935,056
Eurazeo SE

  9,058   643,812
FDJ UNITED (c)

  20,442   799,061
Gecina SA REIT

  9,142   1,001,233
Getlink SE

  64,204   1,235,246
Hermes International SCA

  6,262   16,899,134
Ipsen SA

  7,945   942,882
Kering SA

  14,876   3,222,821
Klepierre SA REIT

  43,360   1,702,033
Legrand SA

  51,199   6,821,341
L'Oreal SA

  47,362   20,186,856
LVMH Moet Hennessy Louis Vuitton SE

  54,070   28,218,780
Orange SA

  363,274   5,507,330
Pernod Ricard SA

  40,460   4,017,988
Publicis Groupe SA

  45,753   5,138,699
Security Description     Shares   Value
Renault SA

  37,435   $1,719,492
Rexel SA

  40,746   1,250,268
Safran SA

  70,945   22,976,607
Sartorius Stedim Biotech

  5,355   1,274,793
Societe Generale SA

  142,006   8,092,977
Sodexo SA

  18,636   1,141,920
Teleperformance SE

  11,251   1,087,199
Thales SA

  18,187   5,328,661
TotalEnergies SE

  402,684   24,627,169
Unibail-Rodamco-Westfield REIT (a)

  24,951   2,376,487
Veolia Environnement SA

  122,331   4,343,845
Vinci SA

  98,232   14,425,228
          351,359,494
GERMANY — 10.2%  
adidas AG

  33,796   7,852,957
Allianz SE

  76,164   30,764,284
BASF SE

  178,036   8,748,215
Bayer AG

  196,569   5,892,008
Bayerische Motoren Werke AG

  57,992   5,136,855
Bayerische Motoren Werke AG Preference Shares

  11,599   957,168
Beiersdorf AG

  19,263   2,410,424
Brenntag SE

  23,610   1,557,560
Commerzbank AG

  173,251   5,446,264
Continental AG

  22,206   1,931,528
Covestro AG (a)

  35,647   2,527,390
CTS Eventim AG & Co. KGaA

  12,864   1,591,582
Daimler Truck Holding AG

  93,228   4,396,030
Deutsche Bank AG

  361,280   10,674,303
Deutsche Boerse AG

  37,367   12,145,729
Deutsche Lufthansa AG

  121,904   1,027,436
Deutsche Post AG

  191,237   8,801,996
Deutsche Telekom AG

  690,177   25,090,776
Dr. Ing hc F Porsche AG Preference Shares (c)

  23,999   1,181,501
E.ON SE

  443,396   8,132,502
Evonik Industries AG

  52,799   1,084,616
Fresenius Medical Care AG

  41,504   2,370,201
Fresenius SE & Co. KGaA

  82,974   4,156,989
GEA Group AG

  29,348   2,046,338
Hannover Rueck SE

  11,747   3,684,477
Heidelberg Materials AG

  26,638   6,236,602
Henkel AG & Co. KGaA

  20,876   1,507,075
Henkel AG & Co. KGaA Preference Shares

  33,425   2,615,466
Infineon Technologies AG

  258,111   10,942,248
Knorr-Bremse AG

  14,394   1,386,349
LEG Immobilien SE

  14,300   1,264,829
Mercedes-Benz Group AG

  143,994   8,398,965
Merck KGaA

  25,115   3,242,935
MTU Aero Engines AG

  10,727   4,749,658
Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen

  26,332   17,018,938
Nemetschek SE

  11,865   1,713,110
 
See accompanying notes to financial statements.
2

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Security Description     Shares   Value
Porsche Automobil Holding SE Preference Shares

  31,031   $1,227,183
Rational AG

  1,075   898,464
Rheinmetall AG

  8,824   18,613,411
RWE AG

  121,871   5,068,552
SAP SE

  206,207   62,486,750
Sartorius AG Preference Shares

  5,062   1,283,478
Scout24 SE (c)

  15,173   2,085,647
Siemens AG

  149,962   38,313,541
Siemens Energy AG (a)

  134,102   15,436,170
Siemens Healthineers AG (c)

  66,793   3,689,736
Symrise AG

  26,483   2,771,100
Talanx AG

  11,898   1,534,914
Volkswagen AG Preference Shares

  40,640   4,275,344
Vonovia SE (b)

  149,330   5,242,952
Zalando SE (a) (c)

  45,329   1,487,203
          383,099,749
HONG KONG — 1.9%  
AIA Group Ltd.

  2,105,400   18,881,549
CK Asset Holdings Ltd.

  399,899   1,762,612
CK Infrastructure Holdings Ltd.

  136,000   900,026
CLP Holdings Ltd.

  324,500   2,732,414
Futu Holdings Ltd. ADR

  11,500   1,421,285
Hang Seng Bank Ltd.

  153,700   2,302,563
Henderson Land Development Co. Ltd.

  289,436   1,012,104
HKT Trust & HKT Ltd. Stapled Security

  811,000   1,210,818
Hong Kong & China Gas Co. Ltd.

  2,112,995   1,773,839
Hong Kong Exchanges & Clearing Ltd.

  237,230   12,656,296
Hongkong Land Holdings Ltd.

  218,900   1,263,053
Jardine Matheson Holdings Ltd.

  33,000   1,585,980
Link REIT

  512,391   2,734,928
MTR Corp. Ltd.

  325,012   1,167,559
Power Assets Holdings Ltd.

  272,000   1,748,076
Prudential PLC

  517,370   6,470,129
Sino Land Co. Ltd.

  640,456   681,249
Sun Hung Kai Properties Ltd.

  277,000   3,177,561
Swire Pacific Ltd. Class A

  62,000   531,147
Techtronic Industries Co. Ltd.

  280,000   3,078,217
WH Group Ltd. (c)

  1,712,766   1,647,310
Wharf Real Estate Investment Co. Ltd.

  360,000   1,018,089
          69,756,804
IRELAND — 0.4%  
AerCap Holdings NV

  35,800   4,188,600
AIB Group PLC

  406,701   3,334,679
Bank of Ireland Group PLC

  192,314   2,728,161
Kerry Group PLC Class A

  32,578   3,585,156
Kingspan Group PLC

  30,531   2,587,561
          16,424,157
Security Description     Shares   Value
ISRAEL — 0.8%  
Azrieli Group Ltd.

  8,514   $783,010
Bank Hapoalim BM

  243,476   4,672,136
Bank Leumi Le-Israel BM

  301,389   5,604,448
Check Point Software Technologies Ltd. (a)

  16,610   3,674,962
Elbit Systems Ltd.

  5,303   2,358,989
ICL Group Ltd.

  163,285   1,119,599
Israel Discount Bank Ltd. Class A

  229,635   2,288,510
Mizrahi Tefahot Bank Ltd.

  28,807   1,877,695
Nice Ltd. (a)

  12,390   2,102,713
Teva Pharmaceutical Industries Ltd. ADR (a)

  220,128   3,689,345
Wix.com Ltd. (a)

  9,900   1,568,754
          29,740,161
ITALY — 3.1%  
Banca Mediolanum SpA

  44,136   757,448
Banco BPM SpA

  218,329   2,540,301
BPER Banca SpA

  185,021   1,675,813
Coca-Cola HBC AG

  41,181   2,146,687
Davide Campari-Milano NV (b)

  106,104   711,181
DiaSorin SpA (b)

  5,195   554,078
Enel SpA

  1,592,753   15,061,918
Eni SpA

  427,394   6,903,340
Ferrari NV

  24,850   12,137,703
FinecoBank Banca Fineco SpA

  121,237   2,680,484
Generali

  168,699   5,982,402
Infrastrutture Wireless Italiane SpA (b) (c)

  48,975   596,739
Intesa Sanpaolo SpA

  2,991,078   17,174,425
Leonardo SpA (b)

  81,177   4,552,936
Mediobanca Banca di Credito Finanziario SpA (b)

  94,761   2,195,226
Moncler SpA

  46,684   2,651,771
Nexi SpA (c)

  90,247   537,521
Poste Italiane SpA (b) (c)

  94,478   2,022,870
Prysmian SpA

  54,004   3,806,090
Recordati Industria Chimica e Farmaceutica SpA

  22,997   1,441,534
Ryanair Holdings PLC

  167,813   4,731,632
Snam SpA

  379,454   2,290,359
Telecom Italia SpA (a) (b)

  1,880,790   924,170
Terna - Rete Elettrica Nazionale

  270,842   2,774,237
UniCredit SpA

  275,987   18,436,973
Unipol Assicurazioni SpA

  72,518   1,432,232
          116,720,070
JAPAN — 21.5%  
Advantest Corp.

  149,900   11,057,389
Aeon Co. Ltd. (b)

  131,200   4,014,705
AGC, Inc. (b)

  41,200   1,205,666
Aisin Corp.

  95,900   1,226,261
Ajinomoto Co., Inc.

  176,000   4,762,948
ANA Holdings, Inc.

  35,300   689,773
Asahi Group Holdings Ltd. (b)

  289,300   3,860,471
 
See accompanying notes to financial statements.
3

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Security Description     Shares   Value
Asahi Kasei Corp.

  237,800   $1,690,751
Asics Corp.

  125,800   3,204,985
Astellas Pharma, Inc.

  366,600   3,595,063
Bandai Namco Holdings, Inc.

  119,400   4,274,412
Bridgestone Corp. (b)

  114,700   4,685,036
Canon, Inc. (b)

  183,400   5,318,721
Capcom Co. Ltd.

  68,300   2,332,541
Central Japan Railway Co.

  154,500   3,456,984
Chiba Bank Ltd.

  117,700   1,087,408
Chubu Electric Power Co., Inc.

  131,900   1,626,321
Chugai Pharmaceutical Co. Ltd.

  133,200   6,939,181
Concordia Financial Group Ltd.

  186,000   1,206,821
Dai Nippon Printing Co. Ltd.

  82,600   1,252,338
Daifuku Co. Ltd.

  67,100   1,729,005
Dai-ichi Life Holdings, Inc.

  679,400   5,155,058
Daiichi Sankyo Co. Ltd. (b)

  336,900   7,848,444
Daikin Industries Ltd.

  51,400   6,058,257
Daito Trust Construction Co. Ltd.

  12,300   1,334,781
Daiwa House Industry Co. Ltd.

  112,200   3,848,100
Daiwa Securities Group, Inc. (b)

  253,500   1,797,991
Denso Corp. (b)

  370,400   5,001,663
Dentsu Group, Inc. (b)

  42,000   929,295
Disco Corp. (b)

  18,300   5,400,872
East Japan Railway Co.

  181,600   3,907,458
Eisai Co. Ltd. (b)

  50,000   1,435,841
ENEOS Holdings, Inc.

  538,500   2,665,938
FANUC Corp.

  187,600   5,117,131
Fast Retailing Co. Ltd. (b)

  37,600   12,890,387
Fuji Electric Co. Ltd.

  26,700   1,229,962
FUJIFILM Holdings Corp. (b)

  217,600   4,733,284
Fujikura Ltd.

  47,200   2,473,960
Fujitsu Ltd.

  349,200   8,497,615
Hankyu Hanshin Holdings, Inc. (b)

  48,000   1,302,641
Hikari Tsushin, Inc. (b)

  3,400   1,001,793
Hitachi Ltd.

  902,900   26,284,707
Honda Motor Co. Ltd.

  827,800   7,991,741
Hoshizaki Corp. (b)

  22,800   785,439
Hoya Corp.

  68,800   8,171,027
Hulic Co. Ltd. (b)

  84,300   847,698
Idemitsu Kosan Co. Ltd.

  148,900   901,987
IHI Corp.

  29,000   3,140,019
Inpex Corp. (b)

  174,900   2,451,954
Isuzu Motors Ltd.

  100,400   1,272,333
ITOCHU Corp.

  235,800   12,334,832
Japan Airlines Co. Ltd.

  31,400   639,434
Japan Exchange Group, Inc.

  197,600   1,997,956
Japan Post Bank Co. Ltd.

  355,700   3,829,233
Japan Post Holdings Co. Ltd.

  344,900   3,188,854
Japan Post Insurance Co. Ltd.

  42,100   950,452
Japan Tobacco, Inc.

  238,100   7,002,311
JFE Holdings, Inc. (b)

  121,300   1,408,288
Kajima Corp.

  79,200   2,063,274
Kansai Electric Power Co., Inc.

  193,500   2,289,394
Kao Corp.

  93,900   4,197,531
Kawasaki Kisen Kaisha Ltd. (b)

  66,300   938,192
Security Description     Shares   Value
KDDI Corp.

  608,500   $10,447,437
Keyence Corp.

  38,400   15,376,482
Kikkoman Corp.

  131,900   1,221,795
Kirin Holdings Co. Ltd. (b)

  148,700   2,078,990
Kobe Bussan Co. Ltd.

  32,500   1,007,546
Komatsu Ltd.

  175,900   5,768,551
Konami Group Corp.

  19,500   3,080,013
Kubota Corp. (b)

  188,400   2,115,579
Kyocera Corp.

  256,300   3,075,884
Kyowa Kirin Co. Ltd. (b)

  40,100   684,458
Lasertec Corp. (b)

  15,900   2,136,585
LY Corp.

  569,200   2,090,094
M3, Inc. (b)

  89,400   1,228,867
Makita Corp.

  49,000   1,510,589
Marubeni Corp.

  283,400   5,715,284
MatsukiyoCocokara & Co.

  68,800   1,413,438
MEIJI Holdings Co. Ltd.

  50,400   1,112,014
Minebea Mitsumi, Inc.

  75,000   1,098,948
Mitsubishi Chemical Group Corp.

  248,400   1,303,522
Mitsubishi Corp.

  678,800   13,571,771
Mitsubishi Electric Corp.

  377,300   8,126,140
Mitsubishi Estate Co. Ltd. (b)

  213,200   3,989,613
Mitsubishi HC Capital, Inc. (b)

  169,700   1,245,920
Mitsubishi Heavy Industries Ltd.

  636,000   15,895,047
Mitsubishi UFJ Financial Group, Inc.

  2,268,500   31,142,895
Mitsui & Co. Ltd.

  484,700   9,888,960
Mitsui Fudosan Co. Ltd.

  509,900   4,924,438
Mitsui OSK Lines Ltd. (b)

  66,000   2,202,361
Mizuho Financial Group, Inc.

  469,540   12,979,842
MonotaRO Co. Ltd.

  53,900   1,061,619
MS&AD Insurance Group Holdings, Inc.

  255,200   5,706,643
Murata Manufacturing Co. Ltd.

  331,000   4,935,955
NEC Corp.

  239,500   6,995,400
Nexon Co. Ltd.

  67,400   1,357,846
NIDEC Corp.

  160,100   3,109,007
Nintendo Co. Ltd. (b)

  217,900   20,938,433
Nippon Building Fund, Inc. REIT (b)

  1,490   1,370,909
Nippon Paint Holdings Co. Ltd. (b)

  199,800   1,604,541
Nippon Sanso Holdings Corp. (b)

  34,400   1,301,029
Nippon Steel Corp.

  193,700   3,664,939
Nippon Telegraph & Telephone Corp.

  5,933,500   6,325,999
Nippon Yusen KK (b)

  87,300   3,135,535
Nissan Motor Co. Ltd. (a) (b)

  424,500   1,029,180
Nissin Foods Holdings Co. Ltd. (b)

  43,200   895,881
Nitori Holdings Co. Ltd.

  16,500   1,590,086
Nitto Denko Corp.

  135,500   2,618,632
Nomura Holdings, Inc. (b)

  608,800   4,012,445
Nomura Research Institute Ltd.

  74,900   2,998,696
Obayashi Corp.

  121,800   1,842,874
Obic Co. Ltd.

  66,100   2,567,670
Olympus Corp.

  221,700   2,632,251
 
See accompanying notes to financial statements.
4

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Security Description     Shares   Value
Omron Corp. (b)

  33,000   $889,626
Ono Pharmaceutical Co. Ltd.

  80,500   868,839
Oracle Corp. Japan

  8,400   999,370
Oriental Land Co. Ltd. (b)

  216,200   4,975,242
ORIX Corp.

  224,300   5,062,259
Osaka Gas Co. Ltd.

  73,700   1,884,275
Otsuka Corp.

  44,900   912,796
Otsuka Holdings Co. Ltd.

  88,600   4,386,296
Pan Pacific International Holdings Corp.

  73,600   2,526,791
Panasonic Holdings Corp.

  457,200   4,923,497
Rakuten Group, Inc. (a) (b)

  281,500   1,552,055
Recruit Holdings Co. Ltd.

  276,700   16,349,714
Renesas Electronics Corp.

  337,000   4,173,859
Resona Holdings, Inc.

  417,700   3,851,822
Ricoh Co. Ltd.

  101,300   957,632
Sanrio Co. Ltd.

  35,300   1,702,865
SBI Holdings, Inc.

  55,300   1,925,709
SCREEN Holdings Co. Ltd. (b)

  16,900   1,375,915
SCSK Corp.

  30,900   930,134
Secom Co. Ltd.

  83,900   3,010,514
Sekisui Chemical Co. Ltd.

  73,200   1,323,676
Sekisui House Ltd.

  118,400   2,609,071
Seven & i Holdings Co. Ltd.

  439,700   7,071,363
SG Holdings Co. Ltd. (b)

  62,100   690,669
Shimadzu Corp.

  45,400   1,122,703
Shimano, Inc. (b)

  14,600   2,113,005
Shin-Etsu Chemical Co. Ltd.

  356,600   11,780,921
Shionogi & Co. Ltd.

  149,500   2,684,780
Shiseido Co. Ltd. (b)

  75,900   1,352,270
SMC Corp. (b)

  11,000   3,963,031
SoftBank Corp.

  5,660,200   8,738,444
SoftBank Group Corp. (b)

  189,100   13,765,700
Sompo Holdings, Inc.

  173,700   5,225,009
Sony Group Corp.

  1,217,000   31,426,564
Subaru Corp. (b)

  116,400   2,027,098
Sumitomo Corp.

  212,200   5,478,167
Sumitomo Electric Industries Ltd.

  142,200   3,046,897
Sumitomo Metal Mining Co. Ltd. (b)

  44,800   1,104,143
Sumitomo Mitsui Financial Group, Inc.

  726,700   18,282,584
Sumitomo Mitsui Trust Group, Inc.

  124,200   3,300,937
Sumitomo Realty & Development Co. Ltd.

  61,900   2,385,664
Suntory Beverage & Food Ltd. (b)

  27,500   877,670
Suzuki Motor Corp.

  315,100   3,802,273
Sysmex Corp.

  95,300   1,658,653
T&D Holdings, Inc.

  93,400   2,049,763
Taisei Corp.

  31,000   1,802,762
Takeda Pharmaceutical Co. Ltd.

  310,217   9,503,342
TDK Corp.

  388,500   4,560,225
Terumo Corp.

  259,000   4,751,636
TIS, Inc.

  41,000   1,373,242
Toho Co. Ltd.

  21,600   1,272,567
Security Description     Shares   Value
Tokio Marine Holdings, Inc.

  362,600   $15,340,431
Tokyo Electron Ltd.

  88,900   17,035,910
Tokyo Gas Co. Ltd.

  63,200   2,096,676
Tokyo Metro Co. Ltd.

  61,300   711,902
Tokyu Corp. (b)

  103,000   1,222,209
TOPPAN Holdings, Inc.

  47,700   1,296,151
Toray Industries, Inc.

  281,600   1,925,747
Toyota Industries Corp.

  32,300   3,644,917
Toyota Motor Corp.

  1,863,900   32,169,356
Toyota Tsusho Corp.

  121,600   2,751,984
Trend Micro, Inc.

  24,900   1,719,875
Unicharm Corp. (b)

  214,800   1,547,298
West Japan Railway Co.

  91,000   2,080,252
Yakult Honsha Co. Ltd. (b)

  51,400   965,229
Yamaha Motor Co. Ltd. (b)

  179,700   1,342,976
Yokogawa Electric Corp.

  47,700   1,273,035
Zensho Holdings Co. Ltd.

  19,100   1,155,428
ZOZO, Inc. (b)

  85,400   920,543
          806,266,498
LUXEMBOURG — 0.1%  
ArcelorMittal SA

  89,754   2,830,961
CVC Capital Partners PLC (c)

  45,343   925,066
Eurofins Scientific SE

  22,282   1,580,851
          5,336,878
MACAU — 0.1%  
Galaxy Entertainment Group Ltd.

  406,000   1,802,433
Sands China Ltd.

  454,800   946,679
          2,749,112
NETHERLANDS — 4.2%  
ABN AMRO Bank NV (c)

  87,475   2,386,341
Adyen NV (a) (c)

  4,973   9,097,243
Aegon Ltd.

  250,271   1,806,162
Akzo Nobel NV

  34,850   2,429,974
Argenx SE (a)

  11,861   6,541,039
ASM International NV

  9,403   5,997,890
ASML Holding NV

  77,766   61,855,107
ASR Nederland NV

  28,108   1,860,233
BE Semiconductor Industries NV (b)

  16,426   2,449,734
Euronext NV (c)

  14,767   2,515,197
EXOR NV

  16,472   1,655,131
Heineken Holding NV

  25,576   1,898,915
Heineken NV

  55,605   4,831,426
IMCD NV

  11,913   1,594,883
ING Groep NV

  624,793   13,660,549
JDE Peet's NV (b)

  33,035   939,982
Koninklijke Ahold Delhaize NV

  177,467   7,395,344
Koninklijke KPN NV

  776,219   3,768,575
Koninklijke Philips NV

  163,623   3,920,124
NN Group NV

  51,791   3,430,045
Randstad NV (b)

  20,906   961,987
Universal Music Group NV (b)

  217,161   7,005,045
Wolters Kluwer NV

  47,137   7,854,341
          155,855,267
 
See accompanying notes to financial statements.
5

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Security Description     Shares   Value
NEW ZEALAND — 0.3%  
Auckland International Airport Ltd.

  329,714   $1,550,184
Contact Energy Ltd.

  168,288   919,433
Fisher & Paykel Healthcare Corp. Ltd.

  110,672   2,421,963
Infratil Ltd.

  193,963   1,248,099
Meridian Energy Ltd.

  264,630   947,797
Xero Ltd. (a)

  28,827   3,396,742
          10,484,218
NORWAY — 0.6%  
Aker BP ASA

  64,596   1,645,587
DNB Bank ASA

  179,024   4,928,613
Equinor ASA

  167,170   4,214,064
Gjensidige Forsikring ASA

  37,920   957,021
Kongsberg Gruppen ASA

  87,570   3,382,189
Mowi ASA

  96,138   1,848,716
Norsk Hydro ASA

  262,216   1,490,944
Orkla ASA

  137,201   1,485,936
Salmar ASA

  14,543   627,725
Telenor ASA

  122,496   1,896,808
          22,477,603
POLAND — 0.0% *  
InPost SA (a)

  41,604   688,599
PORTUGAL — 0.1%  
EDP SA

  622,308   2,689,686
Galp Energia SGPS SA

  80,709   1,475,105
Jeronimo Martins SGPS SA

  58,707   1,480,255
          5,645,046
SINGAPORE — 1.8%  
CapitaLand Ascendas REIT

  785,815   1,653,503
CapitaLand Integrated Commercial Trust REIT

  1,118,228   1,905,197
CapitaLand Investment Ltd.

  414,682   862,802
DBS Group Holdings Ltd.

  420,492   14,826,911
Genting Singapore Ltd.

  1,255,700   704,923
Grab Holdings Ltd. Class A (a)

  474,500   2,386,735
Keppel Ltd.

  282,800   1,647,530
Oversea-Chinese Banking Corp. Ltd.

  665,066   8,516,646
Sea Ltd. ADR (a)

  75,500   12,075,470
Sembcorp Industries Ltd.

  157,500   847,073
Singapore Airlines Ltd. (b)

  304,949   1,668,822
Singapore Exchange Ltd.

  168,500   1,968,578
Singapore Technologies Engineering Ltd.

  320,800   1,962,103
Singapore Telecommunications Ltd.

  1,488,600   4,464,690
STMicroelectronics NV

  130,230   3,964,694
United Overseas Bank Ltd.

  247,090   6,984,054
          66,439,731
SOUTH AFRICA — 0.2%  
Anglo American PLC

  219,451   6,465,569
Security Description     Shares   Value
SOUTH KOREA — 0.0% *  
Delivery Hero SE (a) (c)

  39,154   $1,055,722
SPAIN — 3.1%  
Acciona SA (b)

  4,224   757,634
ACS Actividades de Construccion y Servicios SA (b)

  33,961   2,350,048
Aena SME SA (c)

  150,400   4,000,554
Amadeus IT Group SA (b)

  89,371   7,498,831
Banco Bilbao Vizcaya Argentaria SA

  1,139,243   17,458,449
Banco de Sabadell SA

  1,080,061   3,426,942
Banco Santander SA

  2,976,053   24,548,390
Bankinter SA (b)

  133,063   1,730,651
CaixaBank SA (b)

  782,612   6,755,889
Cellnex Telecom SA (a) (c)

  95,847   3,707,203
EDP Renovaveis SA

  68,800   765,209
Endesa SA (b)

  65,821   2,077,628
Grifols SA (a) (b)

  59,839   727,004
Iberdrola SA (b)

  1,142,011   21,837,543
Industria de Diseno Textil SA

  216,472   11,226,383
Redeia Corp. SA (b)

  81,896   1,744,824
Repsol SA (b)

  230,508   3,364,683
Telefonica SA (b)

  714,927   3,741,228
          117,719,093
SWEDEN — 3.0%  
AddTech AB Class B

  52,438   1,771,703
Alfa Laval AB

  59,142   2,468,594
Assa Abloy AB Class B

  198,706   6,154,832
Atlas Copco AB Class A (b)

  535,522   8,588,783
Atlas Copco AB Class B

  300,319   4,236,747
Beijer Ref AB

  81,118   1,271,192
Boliden AB (a)

  51,350   1,590,005
Epiroc AB Class A

  126,937   2,735,757
Epiroc AB Class B (b)

  71,338   1,354,841
EQT AB (b)

  70,809   2,347,075
Essity AB Class B

  116,622   3,206,053
Evolution AB (b) (c)

  28,249   2,227,813
Fastighets AB Balder Class B (a)

  144,226   1,063,263
H & M Hennes & Mauritz AB Class B (b)

  105,588   1,472,409
Hexagon AB Class B (b)

  407,783   4,071,669
Holmen AB Class B

  16,166   636,435
Industrivarden AB Class A

  20,695   745,249
Industrivarden AB Class C (b)

  30,713   1,101,174
Indutrade AB

  51,369   1,391,702
Investment AB Latour Class B

  32,040   837,779
Investor AB Class B (b)

  340,829   10,004,503
L E Lundbergforetagen AB Class B

  16,401   811,583
Lifco AB Class B

  48,109   1,932,356
Nibe Industrier AB Class B

  309,051   1,308,142
Saab AB Class B

  63,520   3,516,448
Sagax AB Class B

  47,347   1,073,087
Sandvik AB

  210,049   4,780,453
Securitas AB Class B (b)

  91,607   1,360,110
 
See accompanying notes to financial statements.
6

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Security Description     Shares   Value
Skandinaviska Enskilda Banken AB Class A (b)

  317,533   $5,500,787
Skanska AB Class B

  68,534   1,583,479
SKF AB Class B

  62,457   1,422,754
Svenska Cellulosa AB SCA Class B

  118,708   1,532,054
Svenska Handelsbanken AB Class A

  292,929   3,886,602
Swedbank AB Class A (b)

  169,836   4,464,022
Swedish Orphan Biovitrum AB (a)

  40,740   1,231,981
Tele2 AB Class B

  102,132   1,481,548
Telefonaktiebolaget LM Ericsson Class B

  557,889   4,738,052
Telia Co. AB

  478,608   1,705,942
Trelleborg AB Class B

  38,042   1,405,459
Volvo AB Class B

  316,658   8,818,206
          111,830,643
SWITZERLAND — 4.9%  
ABB Ltd. (b)

  312,644   18,581,894
Avolta AG

  15,455   835,269
Baloise Holding AG

  8,359   1,965,835
Banque Cantonale Vaudoise (b)

  5,172   594,195
Barry Callebaut AG (b)

  773   839,035
BKW AG

  4,237   922,452
Chocoladefabriken Lindt & Spruengli AG (d)

  181   3,035,616
Chocoladefabriken Lindt & Spruengli AG (d)

  21   3,487,688
Cie Financiere Richemont SA Class A (b)

  105,900   19,882,858
DSM-Firmenich AG (b)

  36,542   3,871,685
EMS-Chemie Holding AG (b)

  1,465   1,102,431
Galderma Group AG

  22,690   3,278,078
Geberit AG

  6,685   5,240,503
Givaudan SA

  1,826   8,811,138
Helvetia Holding AG

  7,494   1,752,052
Julius Baer Group Ltd. (b)

  39,872   2,686,852
Kuehne & Nagel International AG (b)

  9,852   2,124,492
Logitech International SA

  30,098   2,701,258
Lonza Group AG

  14,093   10,003,197
Partners Group Holding AG

  4,500   5,851,131
Sandoz Group AG

  83,637   4,562,209
Schindler Holding AG (d)

  7,912   2,932,211
Schindler Holding AG (d)

  4,731   1,708,747
SGS SA

  30,719   3,106,633
SIG Group AG

  64,401   1,186,079
Sika AG

  29,865   8,081,559
Sonova Holding AG

  10,113   3,003,409
Straumann Holding AG

  21,380   2,781,280
Swatch Group AG Bearer Shares (b)

  5,970   968,250
Swiss Life Holding AG

  5,608   5,654,498
Swiss Prime Site AG

  15,781   2,355,255
Swisscom AG

  5,185   3,664,023
Security Description     Shares   Value
Temenos AG

  11,173   $796,568
UBS Group AG

  647,977   21,857,013
VAT Group AG (c)

  5,080   2,136,025
Zurich Insurance Group AG

  28,832   20,088,225
          182,449,643
UNITED KINGDOM — 11.2%  
3i Group PLC

  191,798   10,828,606
Admiral Group PLC

  50,151   2,247,287
Ashtead Group PLC

  84,161   5,384,756
Associated British Foods PLC

  67,542   1,904,805
AstraZeneca PLC

  306,050   42,442,812
Auto Trader Group PLC (c)

  180,270   2,036,539
Aviva PLC

  535,134   4,540,720
BAE Systems PLC

  597,821   15,454,652
Barclays PLC

  2,842,070   13,136,581
Barratt Redrow PLC

  264,885   1,654,848
British American Tobacco PLC

  390,038   18,509,329
BT Group PLC (b)

  1,150,387   3,054,337
Bunzl PLC

  62,393   1,983,605
Centrica PLC

  1,035,547   2,292,493
CK Hutchison Holdings Ltd.

  515,000   3,168,726
Coca-Cola Europacific Partners PLC

  45,500   4,218,760
Compass Group PLC

  336,739   11,383,972
Croda International PLC

  28,161   1,128,383
DCC PLC

  19,782   1,281,678
Diageo PLC

  441,689   11,064,302
Entain PLC

  114,884   1,418,455
Halma PLC

  72,702   3,188,068
Hikma Pharmaceuticals PLC

  35,414   964,767
HSBC Holdings PLC

  3,487,873   42,146,548
Imperial Brands PLC

  156,147   6,156,087
Informa PLC

  263,896   2,914,012
InterContinental Hotels Group PLC

  28,691   3,264,858
International Consolidated Airlines Group SA (b)

  245,317   1,147,829
Intertek Group PLC

  32,017   2,079,650
J Sainsbury PLC

  350,599   1,392,324
JD Sports Fashion PLC

  501,204   609,488
Kingfisher PLC

  331,926   1,322,717
Land Securities Group PLC REIT (b)

  143,450   1,240,398
Legal & General Group PLC

  1,178,519   4,111,746
Lloyds Banking Group PLC

  11,821,410   12,424,986
London Stock Exchange Group PLC

  94,475   13,768,469
M&G PLC

  417,414   1,470,048
Marks & Spencer Group PLC

  391,170   1,899,724
Melrose Industries PLC

  257,722   1,874,622
National Grid PLC

  971,989   14,138,802
NatWest Group PLC

  1,594,440   11,173,781
Next PLC

  23,425   3,993,293
Pearson PLC

  118,025   1,732,995
Phoenix Group Holdings PLC

  145,994   1,317,413
Reckitt Benckiser Group PLC

  135,641   9,210,133
 
See accompanying notes to financial statements.
7

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

Security Description     Shares   Value
RELX PLC

  363,905   $19,632,911
Rentokil Initial PLC

  516,272   2,491,012
Rolls-Royce Holdings PLC

  1,663,555   22,057,906
Sage Group PLC

  194,112   3,326,345
Schroders PLC

  159,095   787,909
Segro PLC REIT (b)

  262,246   2,442,269
Severn Trent PLC

  52,606   1,970,902
Smith & Nephew PLC

  159,754   2,436,566
Smiths Group PLC

  63,876   1,965,978
Spirax Group PLC

  15,720   1,282,820
SSE PLC

  221,837   5,566,133
Standard Chartered PLC

  401,471   6,640,376
Tesco PLC

  1,327,563   7,300,550
Unilever PLC

  492,951   29,891,539
United Utilities Group PLC

  135,274   2,116,028
Vodafone Group PLC

  3,873,835   4,128,957
Whitbread PLC

  37,255   1,441,208
Wise PLC Class A (a)

  128,810   1,835,753
WPP PLC

  223,290   1,568,481
          421,562,047
UNITED STATES — 10.0%  
Alcon AG

  98,928   8,724,555
Amrize Ltd. (a)

  102,755   5,109,350
BP PLC

  3,137,839   15,724,863
CSL Ltd.

  95,659   15,013,033
CyberArk Software Ltd. (a)

  9,300   3,783,984
Experian PLC

  181,939   9,354,485
Ferrovial SE

  100,800   5,355,345
GSK PLC

  806,798   15,367,770
Haleon PLC

  1,791,770   9,192,833
Holcim AG

  102,755   7,603,354
James Hardie Industries PLC CDI (a)

  83,678   2,286,761
Monday.com Ltd. (a)

  7,700   2,421,496
Nestle SA (b)

  517,306   51,230,191
Novartis AG

  375,230   45,334,006
Qiagen NV (a)

  41,086   1,971,834
Roche Holding AG

  138,671   45,015,812
Roche Holding AG Bearer Shares (b)

  6,097   2,106,376
Sanofi SA

  218,804   21,115,059
Schneider Electric SE

  108,166   28,669,961
Shell PLC

  1,181,269   41,334,808
Spotify Technology SA (a)

  30,200   23,173,668
Stellantis NV

  405,489   4,050,140
Security Description     Shares   Value
Swiss Re AG

  59,787   $10,301,240
Tenaris SA

  82,607   1,549,067
          375,789,991
TOTAL COMMON STOCKS

(Cost $2,226,514,068)

        3,704,584,593
SHORT-TERM INVESTMENTS — 2.6%      
State Street Institutional U.S. Government Money Market Fund, Class G Shares 4.31% (e) (f)

  11,083,988   11,083,988
State Street Navigator Securities Lending Portfolio II (g) (h)

  88,699,520   88,699,520
TOTAL SHORT-TERM INVESTMENTS

(Cost $99,783,508)

  99,783,508  
TOTAL INVESTMENTS — 101.3%

(Cost $2,326,297,576)

  3,804,368,101  
LIABILITIES IN EXCESS OF OTHER

ASSETS — (1.3)%

  (49,400,062)  
NET ASSETS — 100.0%

  $3,754,968,039  
(a) Non-income producing security.
(b) All or a portion of the shares of the security are on loan at June 30, 2025.
(c) Securities purchased pursuant to Rule 144A of the Securities Act of 1933, as amended. These securities, which represent 1.2% of net assets as of June 30, 2025, may be resold in transactions exempt from registration, normally to qualified institutional buyers.
(d) Reflects separate holdings of the issuer's common stock traded on different securities exchanges.
(e) The Portfolio invested in certain money market funds managed by SSGA Funds Management, Inc. Amounts related to these investments during the period ended June 30, 2025 are shown in the Affiliate Table below.
(f) The rate shown is the annualized seven-day yield at June 30, 2025.
(g) The Portfolio invested in an affiliated entity. Amounts related to these investments during the period ended June 30, 2025 are shown in the Affiliate Table below.
(h) Investment of cash collateral for securities loaned.
* Amount is less than 0.05% of net assets.
ADR American Depositary Receipt
CDI CREST Depository Interest
REIT Real Estate Investment Trust
 
At June 30, 2025, open futures contracts were as follows:
Description   Number of
Contracts
  Expiration
Date
  Notional
Amount
  Value   Unrealized
Appreciation
(Depreciation)
MSCI EAFE Index (long)   390   09/19/2025   $51,434,251   $52,293,150   $858,899
See accompanying notes to financial statements.
8

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
SCHEDULE OF INVESTMENTS  (continued)
June 30, 2025 (Unaudited)

During the period ended June 30, 2025, the average notional value related to futures contracts was $81,288,825.
The following table summarizes the value of the Portfolio's investments according to the fair value hierarchy as of June 30, 2025. 
Description   Level 1 –
Quoted Prices
  Level 2 –
Other Significant
Observable Inputs
  Level 3 –
Significant
Unobservable Inputs
  Total
ASSETS:                 
INVESTMENTS:                
Common Stocks

  $3,704,584,593   $—   $—   $3,704,584,593
Short-Term Investments

  99,783,508       99,783,508
TOTAL INVESTMENTS

  $3,804,368,101   $—   $—   $3,804,368,101
OTHER FINANCIAL INSTRUMENTS:                
Futures Contracts - Unrealized Appreciation

  $858,899   $—   $—   $858,899
TOTAL OTHER FINANCIAL INSTRUMENTS:

  $858,899   $—   $—   $858,899
 
Affiliate Table
  Number of
Shares Held
at
12/31/24
  Value at

12/31/24
  Cost of
Purchases
  Proceeds
from
Shares Sold
  Realized
Gain (Loss)
  Change in
Unrealized
Appreciation/
Depreciation
  Number of
Shares Held
at
6/30/25
  Value at

6/30/25
  Dividend
Income
State Street Institutional U.S. Government Money Market Fund, Class G Shares

80,638,108   $80,638,108   $483,581,516   $553,135,636   $—   $—   11,083,988   $11,083,988   $1,166,681
State Street Navigator Securities Lending Portfolio II

43,267,190   43,267,190   529,213,124   483,780,794       88,699,520   88,699,520   557,419
Total

    $123,905,298   $1,012,794,640   $1,036,916,430   $—   $—       $99,783,508   $1,724,100
See accompanying notes to financial statements.
9

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
STATEMENT OF ASSETS AND LIABILITIES
June 30, 2025 (Unaudited)

ASSETS  
Investments in unaffiliated issuers, at value*

$3,704,584,593
Investments in affiliated issuers, at value

99,783,508
Total Investments

3,804,368,101
Foreign currency, at value

15,217,984
Net cash at broker

1,057,903
Cash

20
Receivable from broker — accumulated variation margin on futures contracts

860,001
Dividends receivable — unaffiliated issuers

5,024,561
Dividends receivable — affiliated issuers

149,774
Securities lending income receivable — unaffiliated issuers

57,623
Securities lending income receivable — affiliated issuers  

40,134
Receivable for foreign taxes recoverable

17,759,613
TOTAL ASSETS

3,844,535,714
LIABILITIES  
Payable upon return of securities loaned

88,699,520
Advisory fee payable

579,516
Custodian fees payable

215,624
Professional fees payable

28,511
Printing and postage fees payable

3,742
Accrued expenses and other liabilities

40,762
TOTAL LIABILITIES

89,567,675
NET ASSETS

$3,754,968,039
COST OF INVESTMENTS:  
Investments in unaffiliated issuers

$2,226,514,068
Investments in affiliated issuers

99,783,508
Total cost of investments

$2,326,297,576
Foreign currency, at cost

$15,070,982
* Includes investments in securities on loan, at value

$163,902,975
See accompanying notes to financial statements.
10

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
STATEMENT OF OPERATIONS
For the Six Months Ended June 30, 2025 (Unaudited)

INVESTMENT INCOME  
Interest income — unaffiliated issuers

$62,463
Dividend income — unaffiliated issuers

80,329,288
Dividend income — affiliated issuers

1,166,681
Unaffiliated securities lending income

616,720
Affiliated securities lending income

557,419
Foreign taxes withheld

(10,123,059)
TOTAL INVESTMENT INCOME (LOSS)

72,609,512
EXPENSES  
Advisory fee

2,259,975
Custodian fees

232,451
Trustees’ fees and expenses  

19,478
Professional fees and expenses

30,817
Printing and postage fees

2,306
Insurance expense

540
Interest expense

770
Miscellaneous expenses

98,980
TOTAL EXPENSES

2,645,317
NET INVESTMENT INCOME (LOSS)

$69,964,195
REALIZED AND UNREALIZED GAIN (LOSS)  
Net realized gain (loss) on:  
Investments — unaffiliated issuers

20,801,120
Foreign currency transactions

1,051,879
Futures contracts

12,205,006
Net realized gain (loss)

34,058,005
Net change in unrealized appreciation/depreciation on:  
Investments — unaffiliated issuers

554,481,922
Foreign currency translations

2,372,250
Futures contracts

4,218,265
Net change in unrealized appreciation/depreciation

561,072,437
NET REALIZED AND UNREALIZED GAIN (LOSS)

595,130,442
NET INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS

$665,094,637
See accompanying notes to financial statements.
11

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
STATEMENTS OF CHANGES IN NET ASSETS

  Six Months
Ended
6/30/25
(Unaudited)
  Year Ended
12/31/24
INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS:      
Net investment income (loss)

$69,964,195   $97,358,234
Net realized gain (loss)

34,058,005   (14,251,452)
Net change in unrealized appreciation/depreciation

561,072,437   18,817,711
Net increase (decrease) in net assets resulting from operations

665,094,637   101,924,493
FROM BENEFICIAL INTEREST TRANSACTIONS:      
Contributions

191,779,684   601,428,822
Withdrawals

(598,130,297)   (231,655,661)
Net increase (decrease) in net assets from capital transactions

(406,350,613)   369,773,161
Net increase (decrease) in net assets during the period

258,744,024   471,697,654
Net assets at beginning of period

3,496,224,015   3,024,526,361
NET ASSETS AT END OF PERIOD

$3,754,968,039   $3,496,224,015
See accompanying notes to financial statements.
12

Table of Contents
STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
FINANCIAL HIGHLIGHTS
Selected data for a share outstanding throughout each period

  Six Months
Ended
6/30/25
(Unaudited)
  Year
Ended
12/31/24
  Year
Ended
12/31/23
  Year
Ended
12/31/22
  Year
Ended
12/31/21
  Year
Ended
12/31/20
Total return (a)

19.92%   3.56%   18.28%   (14.64)%   11.25%   7.96%
Ratios and Supplemental Data:                      
Net assets, end of period (in 000s)

$3,754,968   $3,496,224   $3,024,526   $3,463,427   $4,346,560   $3,655,822
Ratios to average net assets:                      
Total expenses

0.14%(b)   0.14%   0.14%   0.14%   0.14%   0.14%
Net investment income (loss)

3.79%(b)   2.91%   2.92%   2.98%   2.67%   2.35%
Portfolio turnover rate

5%(c)   3%   8%   18%   7%   8%
(a) Total return for periods of less than one year are not annualized. Results represent past performance and is not indicative of future results.
(b) Annualized.
(c) Not annualized.
See accompanying notes to financial statements.
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STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
NOTES TO FINANCIAL STATEMENTS
June 30, 2025 (Unaudited)

1.    Organization
State Street Master Funds (the “Trust”), a Massachusetts business trust registered under the Investment Company Act of 1940, as amended (“1940 Act”), is an open-end management investment company.
As of June 30, 2025, the Trust consists of four (4) investment portfolios (together, the “Portfolios”). Financial statements herein relate only to the State Street International Developed Equity Index Portfolio (the “Portfolio”), which commenced operations on April 29, 2016.
The Portfolio is classified as a diversified investment company under the 1940 Act.
Under the Trust’s organizational documents, its officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Trust. Additionally, in the normal course of business, the Trust enters into contracts with service providers that contain general indemnification clauses. The Trust’s maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Trust that have not yet occurred.
2.    Segment Reporting
The Portfolio has one reportable segment. Business activities are managed on a consolidated basis and revenues are derived primarily through Portfolio's investments in accordance with its investment objective. The Portfolio’s chief operating decision maker (“CODM”) is the President of the Trust. The CODM assesses performance based on the Portfolio’s Total Return as reported in the Financial Highlights, and the same accounting policies are applied as described in the summary of significant accounting policies. The Portfolio’s Total Return is utilized by the CODM to compare results, including the impact of the Portfolio’s costs, to the Portfolio’s competitors and to the Portfolio’s benchmark index.
3.    Summary of Significant Accounting Policies
The following is a summary of significant accounting policies followed by the Trust in the preparation of its financial statements:
The preparation of financial statements in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates. The Portfolio is an investment company under U.S. GAAP and follows the accounting and reporting guidance applicable to investment companies.
Security Valuation
The Portfolio's investments are valued at fair value each day that the New York Stock Exchange (“NYSE”) is open and, for financial reporting purposes, as of the report date should the reporting period end on a day that the NYSE is not open. Fair value is generally defined as the price a fund would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. By its nature, a fair value price is a good faith estimate of the valuation in a current sale and may not reflect an actual market price. The investments of the Portfolio are valued pursuant to the policy and procedures developed by the Oversight Committee (the “Committee”) and approved by the Board of Trustees of the Trust (the “Board”). The Committee provides oversight of the valuation of investments for the Portfolio. The Board has responsibility for overseeing the determination of the fair value of investments.
Valuation techniques used to value the Portfolio's investments by major category are as follows:
•  Equity investments traded on a recognized securities exchange for which market quotations are readily available are valued at the last sale price or official closing price, as applicable, on the primary market or exchange on which they trade. Equity investments traded on a recognized exchange for which there were no sales on that day are valued at the last published sale price or at fair value.
•  Rights and warrants are valued at the last reported sale price obtained from independent pricing services or brokers on the valuation date. If no price is obtained from pricing services or brokers, valuation will be based upon the intrinsic value, pursuant to the valuation policy and procedures approved by the Board.
•  Investments in registered investment companies (including money market funds) or other unitized pooled
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STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

investment vehicles that are not traded on an exchange are valued at that day’s published net asset value (“NAV”) per share or unit.
•  Exchange-traded futures contracts are valued at the closing settlement price on the primary market on which they are traded most extensively. Exchange-traded futures contracts traded on a recognized exchange for which there were no sales on that day are valued at the last reported sale price obtained from independent pricing services or brokers or at fair value.
In the event prices or quotations are not readily available or that the application of these valuation methods results in a price for an investment that is deemed to be not representative of the fair value of such investment, fair value will be determined in good faith by the Committee, in accordance with the valuation policy and procedures approved by the Board.
A “significant event” is an event that the Board believes, with a reasonably high degree of certainty, has caused the closing market prices of a Fund’s portfolio securities to no longer reflect their value at the time of the Fund’s net asset value calculation. Fair value may be determined using an independent fair value service under valuation procedures approved by the Board. The independent fair value service takes into account multiple factors including, but not limited to, movements in the U.S. securities markets, certain depositary receipts, futures contracts and foreign currency exchange rates that have occurred subsequent to the close of foreign securities exchanges. The use of the independent fair value service or alternative fair valuation methods would result in the investments being classified within Level 2 of the fair value hierarchy.
Various inputs are used in determining the value of the Portfolio’s investments.
The Portfolio values its assets and liabilities at fair value using a fair value hierarchy consisting of three broad levels that prioritize the inputs to valuation techniques giving the highest priority to readily available unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements) when market prices are not readily available or reliable. The categorization of a value determined for an investment within the hierarchy is based upon the pricing transparency of the investment and is not necessarily an indication of the risk associated with investing in it.
The three levels of the fair value hierarchy are as follows:
•  Level 1 – Unadjusted quoted prices in active markets for an identical asset or liability;
•  Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability either directly or indirectly, including quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not considered to be active, inputs other than quoted prices that are observable for the asset or liability (such as exchange rates, financing terms, interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs; and
•  Level 3 – Unobservable inputs for the asset or liability, including the Committee’s assumptions used in determining the fair value of investments.
The value of the Portfolio’s investments according to the fair value hierarchy as of June 30, 2025 is disclosed in the Portfolio’s Schedule of Investments.
Investment Transactions and Income Recognition
Investment transactions are accounted for on trade date for financial reporting purposes. Realized gains and losses from the sale or disposition of investments and foreign exchange transactions, if any, are determined using the identified cost method. Dividend income and capital gain distributions, if any, are recognized on the ex-dividend date, or when the information becomes available, net of any foreign taxes withheld at source, if any. Non-cash dividends received in the form of stock, if any, are recorded as dividend income at fair value.
Distributions received by the Portfolio may include a return of capital that is estimated by management. Such amounts are recorded as a reduction of the cost of investments or reclassified to capital gains.
All of the net investment income and realized gains and losses from the security transactions of the Portfolio are allocated pro rata among the partners in the Portfolio on a daily basis based on each partner’s daily ownership percentage.
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NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

Expenses
Certain expenses, which are directly identifiable to a specific Portfolio, are applied to that Portfolio within the Trust. Other expenses which cannot be attributed to a specific Portfolio are allocated in such a manner as deemed equitable, taking into consideration the nature and type of expense and the relative net assets of the Portfolio within the Trust.
Foreign Currency Translation
The accounting records of the Portfolio are maintained in U.S. dollars. Foreign currencies as well as investment securities and other assets and liabilities denominated in a foreign currency are translated to U.S. dollars using exchange rates at period end. Purchases and sales of securities, income receipts and expense payments denominated in foreign currencies are translated into U.S. dollars at the prevailing exchange rate on the respective dates of the transactions.
The effects of exchange rate fluctuations on investments are included with the net realized and unrealized gain (loss) on investment securities. Other foreign currency transactions resulting in realized and unrealized gain (loss) are disclosed separately.
Foreign Taxes
The Portfolio may be subject to foreign taxes (a portion of which may be reclaimable) on income, stock dividends, realized and unrealized capital gains on investments or certain foreign currency transactions. Foreign taxes are recorded in accordance with SSGA Funds Management, Inc.'s (the “Adviser” or “SSGA FM”) understanding of the applicable foreign tax regulations and rates that exist in the foreign jurisdictions in which the Portfolio invests. These foreign taxes, if any, are paid by the Portfolio and are reflected in the Statement of Operations, if applicable. Foreign taxes payable or deferred as of June 30, 2025, if any, are disclosed in the Portfolio's Statement of Assets and Liabilities.
4.    Derivative Financial Instruments
Futures Contracts
The Portfolio may enter into futures contracts to meet its objectives. A futures contract is a standardized, exchange-traded agreement to buy or sell a financial instrument at a set price on a future date. Upon entering into a futures contract, the Portfolio is required to deposit with the broker, cash or securities in an amount equal to the minimum initial margin requirements of the clearing house. Securities deposited, if any, are designated on the Portfolio’s Schedule of Investments and cash deposited, if any, is shown as Cash at Broker on the Portfolio’s Statement of Assets and Liabilities. Subsequent payments are made or received by the Portfolio equal to the daily change in the contract value, accumulated, exchange rates, and or other transactional fees. The accumulation of those payments are recorded as variation margin receivable or payable with a corresponding offset to unrealized gains or losses. The Portfolio recognizes a realized gain or loss when the contract is closed.
Losses may arise if the value of a futures contract decreases due to unfavorable changes in the market rates or values of the underlying instrument during the term of the contract or if the counterparty does not perform under the contract. The use of futures contracts also involves the risk that the movements in the price of the futures contracts do not correlate with the movement of the assets underlying such contracts.
For the period ended June 30, 2025, the Portfolio entered into futures contracts for cash equitization, to reduce tracking error and to facilitate daily liquidity.
The following summarizes the value of the Portfolio's derivative instruments as of June 30, 2025, and the related location in the accompanying Statement of Assets and Liabilities and Statement of Operations, presented by primary underlying risk exposure:
  Asset Derivatives
  Interest
Rate
Risk
  Foreign
Exchange
Risk
  Credit
Risk
  Equity
Risk
  Commodity
Risk
  Total
Futures Contracts

$—   $—   $—   $860,001   $—   $860,001
    
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NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

  Net Realized Gain (Loss)
  Interest
Rate
Risk
  Foreign
Exchange
Risk
  Credit
Risk
  Equity
Risk
  Commodity
Risk
  Total
Futures Contracts

$—   $—   $—   $12,205,006   $—   $12,205,006
  Net Change in Unrealized Appreciation/Depreciation
  Interest
Rate
Risk
  Foreign
Exchange
Risk
  Credit
Risk
  Equity
Risk
  Commodity
Risk
  Total
Futures Contracts

$—   $—   $—   $4,218,265   $—   $4,218,265
5.    Fees and Transactions with Affiliates
Advisory Fee
The Portfolio has entered into an Investment Advisory Agreement with the Adviser. For its advisory services to the Portfolio, the Portfolio pays the Adviser a management fee at an annual rate of 0.11% of its average daily net assets.
Administrator, Custodian, Sub-Administrator and Transfer Agent Fees
SSGA FM serves as administrator and State Street Bank and Trust Company (“State Street”), an affiliate of the Adviser, serves as custodian, sub-administrator and transfer agent to the Portfolio. For its services as custodian, sub-administrator, and transfer agent, the Portfolio pays State Street an annual fee. The fees are accrued daily and paid monthly.
Other Transactions with Affiliates - Securities Lending
State Street, an affiliate of the Portfolio, acts as the securities lending agent for the Portfolio, pursuant to an amended and restated securities lending authorization agreement dated January 6, 2017, as amended.
Net proceeds collected by State Street on investment of cash collateral or any fee income less rebates payable to borrowers, are paid as follows: If the calendar year to date net proceeds is below a specified threshold across participating affiliated funds, the Portfolio retains eighty five percent (85%) of the net proceeds and fifteen percent (15%) of such net proceeds is payable to State Street. Starting the business day following the date that calendar year to date net proceeds exceeds a specified threshold, each Fund/Portfolio retains ninety percent (90%) of the net proceeds and ten percent (10%) of such net proceeds is payable to State Street.
In addition, cash collateral from lending activities is invested in the State Street Navigator Securities Lending Portfolio II, an affiliated fund, for which SSGA FM serves as investment adviser. See Note 8 for additional information regarding securities lending.
Other Transactions with Affiliates
The Portfolio may invest in affiliated entities, including securities issued by State Street Corporation, affiliated funds, or entities deemed to be affiliates as a result of the Portfolio owning more than five percent of the entity’s voting securities or outstanding shares. Amounts relating to these transactions during the period ended June 30, 2025, are disclosed in the Schedule of Investments.
6.    Trustees’ Fees
The fees and expenses of the Trustees who are not “interested persons” of the Trust, as defined in the 1940 Act (“Independent Trustees”), are paid directly by the Portfolio. The Independent Trustees are reimbursed for travel and other out-of-pocket expenses in connection with meeting attendance and industry seminars.
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NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

7.    Investment Transactions
Purchases and sales of investments (excluding in-kind transactions, derivative contracts and short term investments) for the period ended June 30, 2025, were as follows:
  Purchases   Sales
State Street International Developed Equity Index Portfolio

$179,183,678   $437,463,669
8.    Income Tax Information
The Portfolio is not required to pay federal income taxes on its net investment income and net capital gains because it is treated as a partnership for federal income tax purposes. All interest, gains and losses of the Portfolio are deemed to have been “passed through” to the Portfolio’s partners in proportion to their holdings in the Portfolio, regardless of whether such items have been distributed by the Portfolio. Each partner is responsible for its tax liability based on its distributive share; therefore, no provision has been made for federal income taxes.
The Portfolio files federal and various state and local tax returns as required. No income tax returns are currently under examination. Generally, the federal returns are subject to examination by the Internal Revenue Service for a period of three years from date of filing, while the state returns may remain open for an additional year depending upon jurisdiction. As of December 31, 2024,SSGA FM has analyzed the Portfolio’s tax positions taken on tax returns for all open years and does not believe there are any uncertain tax positions that would require recognition of a tax liability. 
As of June 30, 2025, gross unrealized appreciation and gross unrealized depreciation of investments and other financial instruments based on cost for federal income tax purposes were as follows:
  Tax
Cost
  Gross
Unrealized
Appreciation
  Gross
Unrealized
Depreciation
  Net Unrealized
Appreciation
(Depreciation)
State Street International Developed Equity Index Portfolio

$2,477,332,622   $1,532,123,618   $204,229,240   $1,327,894,378
9.    Securities Lending
The Portfolio may lend securities to qualified broker-dealers or institutional investors. The loans are secured at all times by cash, cash equivalents or U.S. government securities in an amount at least equal to the market value of the securities loaned, plus accrued interest and dividends, determined on a daily basis and adjusted accordingly. The value of the collateral with respect to a loaned security may be temporarily more or less than the value of a security due to market fluctuations of securities values. With respect to each loan, if on any U.S. business day the aggregate market value of securities collateral plus cash collateral is less than the aggregate market value of the securities which are subject to the loan, the borrower will be notified to provide additional collateral on the next business day.
The Portfolio will regain record ownership of loaned securities to exercise certain beneficial rights; however, the Portfolio may bear the risk of delay in recovery of, or even loss of rights in the securities loaned should the borrower fail financially. In addition, the Portfolio will bear the risk of loss of any cash collateral that it may invest. The Portfolio receives compensation for lending its securities from interest or dividends earned on the cash, cash equivalents or U.S. government securities held as collateral, net of fee rebates paid to the borrower and net of fees paid to State Street as the lending agent. Additionally, the Portfolio will receive a fee from the borrower for non-cash collateral equal to a percentage of the market value of the loaned securities.
The market value of securities on loan as of June 30, 2025, and the value of the invested cash collateral are disclosed in the Portfolio’s Statement of Assets and Liabilities. Non-cash collateral is not disclosed in the Portfolio’s Statement of Assets and Liabilities as it is held by the lending agent on behalf of the Portfolio, and the Portfolio does not have the ability to re-hypothecate those securities. Securities lending income, as disclosed in the Portfolio’s Statement of Operations, represents the income earned from the non-cash collateral and the investment of cash collateral, net of fee rebates paid to the borrower and net of fees paid to State Street as lending agent.
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STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

The following is a summary of the Portfolio’s securities lending agreements and related cash and non-cash collateral received as of June 30, 2025:
Portfolio   Market Value of
Securities on Loan
  Cash
Collateral
Received
  Non-Cash
Collateral
Received
  Total
Collateral
Received
State Street International Developed Equity Index Portfolio

  $ 163,902,975   $ 88,699,520   $ 82,392,570   $ 171,092,090
The following table reflects a breakdown of transactions accounted for as secured borrowings, the gross obligation by the type of collateral pledged or securities loaned, and the remaining contractual maturity of those transactions as of June 30, 2025:
        Remaining Contractual Maturity of the Agreements
as of June 30, 2025
Portfolio   Securities
Lending
Transactions
  Overnight
and
Continuous
  <30 Days   Between
30 & 90
Days
  >90 Days   Total
Borrowings
  Gross Amount
of Recognized
Liabilities for
Securities Lending Transactions
State Street International Developed Equity Index Portfolio

  Common Stocks   $88,699,520   $—   $—   $—   $88,699,520   $88,699,520
10.    Line of Credit
The Portfolio and other affiliated funds (each, a “Participant” and collectively, the “Participants”) have access to $194.29 million of a $1.36 billion revolving credit facility, provided by a syndication of banks under which the Participants may borrow to fund shareholder redemptions. This agreement expires in October 2025 unless extended or renewed.
The Participants are charged an annual commitment fee which is calculated based on the unused portion of the shared credit line. Commitment fees are allocated among each of the Participants based on relative net assets. Commitment fees are ordinary fund operating expenses. A Participant incurs and pays the interest expense related to its borrowing. Interest is calculated at a rate per annum equal to the sum of 1.00% plus the greater of the New York Fed Bank Rate and the one-month SOFR Rate.
The Portfolio had no outstanding loans as of June 30, 2025.
11.    Risks
Foreign and Emerging Markets Risk
Investing in foreign markets involves risks and considerations not typically associated with investing in the U.S. Foreign securities may be subject to risk of loss because of government regulation, economic, political and social instability in the countries in which the Portfolio invests. Foreign markets may be less liquid than investments in the U.S. and may be subject to the risks of currency fluctuations. To the extent that the Portfolio invests in securities of issuers located in emerging markets, these risks may be even more pronounced.
Market Risks
The Portfolio’s investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities markets. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Portfolio is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. Local, regional or global events such as war, acts of terrorism, the spread of infectious illness, such as COVID-19, or other public health issues, or other events could have a significant impact on the Portfolio and its investments.
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STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
NOTES TO FINANCIAL STATEMENTS  (continued)
June 30, 2025 (Unaudited)

Russian Sanctions Risk
Sanctions threatened or imposed by a number of jurisdictions, including the United States, the European Union and the United Kingdom, and other intergovernmental actions that have been or may be undertaken in the future, against Russia, Russian entities or Russian individuals, may result in the devaluation of Russian currency, a downgrade in the country’s credit rating, an immediate freeze of Russian assets, a decline in the value and liquidity of Russian securities, property or interests, and/or other adverse consequences to the Russian economy or the Portfolio's. The scope and scale of sanctions in place at a particular time may be expanded or otherwise modified in a way that have negative effects on the Portfolio's. Sanctions, or the threat of new or modified sanctions, could impair the ability of the Portfolio's to buy, sell, hold, receive, deliver or otherwise transact in certain affected securities or other investment instruments. Sanctions could also result in Russia taking counter measures or other actions in response, which may further impair the value and liquidity of Russian securities. These sanctions, and the resulting disruption of the Russian economy, may cause volatility in other regional and global markets and may negatively impact the performance of various sectors and industries, as well as companies in other countries, which could have a negative effect on the performance of  the Portfolio's, even if the Portfolio's does not have direct exposure to securities of Russian issuers. As a collective result of the imposition of sanctions, Russian government countermeasures and the impact that they have had on the trading markets for Russian securities, certain Portfolio's have used, and may in the future use, fair valuation procedures approved by the Portfolio’s Board to value certain Russian securities, which could result in such securities being deemed to have a zero value.
12.    Subsequent Events
Management has evaluated the impact of all subsequent events on the Portfolio through the date the financial statements were issued and has determined that there were no subsequent events requiring adjustment or disclosure in the financial statements.
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STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract
June 30, 2025 (Unaudited)

TRUSTEE CONSIDERATIONS IN APPROVING CONTINUATION OF INVESTMENT ADVISORY AGREEMENT1
Overview of the Contract Review Process
Under the Investment Company Act of 1940, as amended (the “1940 Act”), an investment advisory agreement between a mutual fund and its investment adviser may continue in effect from year to year only if its continuance is approved at least annually by the fund’s board of trustees or its shareholders, and by a vote of a majority of those trustees who are not “interested persons” of the fund (the “Independent Trustees”) cast in person at a meeting called for the purpose of considering such approval.
Consistent with these requirements, the Board of Trustees (the “Board”) of the State Street Master Funds (the “Trust”), met in person on April 2, 2025 and May 7-8, 2025, including in executive sessions attended by the Independent Trustees, to consider a proposal to approve, with respect to the State Street International Developed Equity Index Portfolio (the “Portfolio”), the continuation of the investment advisory agreement (the “Advisory Agreement”) with SSGA Funds Management, Inc. (“SSGA FM” or the “Adviser”). Prior to voting on the proposal, the Independent Trustees reviewed information furnished by the Adviser and others reasonably necessary to permit the Board to evaluate the proposal fully. The Independent Trustees were separately represented by counsel who are independent of the Adviser (“Independent Counsel”) in connection with their consideration of approval of the Advisory Agreement. In advance of the meetings held on April 2, 2025 and May 7-8, 2025, the Independent Trustees met with their Independent Counsel on March 27, 2025, in a private session to review and discuss the information provided by the Adviser in connection with the proposal. Following the April 2, 2025 meeting, the Independent Trustees submitted questions and requests for additional information to management, and considered management’s responses thereto prior to and at the May 7-8, 2025 meeting. The Independent Trustees considered, among other things, the following:
Information about Performance, Expenses and Fees
A report prepared by an independent third-party provider of investment company data, which includes for the Portfolio:
o Comparisons of the Portfolio’s performance over the past one-, three- and five-year periods ended December 31, 2024 to the performance of an appropriate benchmark provided by Broadridge Financial Solutions, Inc. (“Broadridge”) for the Portfolio (the “Benchmark”) and/or a universe of other mutual funds with similar investment objectives and policies (the “Performance Group” and/or the “Performance Universe”) constructed by Broadridge;
o Comparisons of the Portfolio’s expense ratio (with detail of component expenses) to the expense ratios of a group of comparable mutual funds selected by the independent third-party data provider (the “Expense Group” and/or “Expense Universe”);
o A chart showing the Portfolio’s historical average net assets relative to its total expenses, management fees, and non-management expenses over the past five years; and
o Comparisons of the Portfolio’s contractual management fee to the contractual management fees of comparable mutual funds at different asset levels.
_______________________________________________
1Over the course of many years overseeing the Portfolio and other investment companies, the Independent Trustees have identified numerous relevant issues, factors and concerns ("issues, factors and concerns") that they consider each year in connection with the proposed continuation of the advisory agreement, the administration agreement, the distribution plans, the distribution agreement and various related-party service agreements (the "annual review process"). The statement of issues, factors and concerns and the related conclusions of the Independent Trustees may not change substantially from year to year. However, the information requested by, and provided to, the Independent Trustees with respect to the issues, factors and concerns and on which their conclusions are based is updated annually and, in some cases, may differ substantially from the previous year. The Independent Trustees schedule annually a separate in-person meeting that is dedicated to the annual review process (the "special meeting"). At the special meeting and throughout the annual review process, the Independent Trustees take a fresh look at each of the issues, factors and concerns in light of the latest available information and each year present one or more sets of comments and questions to management with respect to specific issues, factors and concerns. Management responds to such comments and questions to the satisfaction of the Independent Trustees before the annual review process is completed and prior to the Independent Trustees voting on proposals to approve continuation of the agreements and plans.
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Statement Regarding Basis for Approval of Investment Advisory Contract
June 30, 2025 (Unaudited)

Comparative information concerning fees charged by the Adviser for managing institutional accounts using investment strategies and techniques similar to those used in managing the Portfolio; and
Profitability analyses for (a) the Adviser with respect to the Portfolio and (b) affiliates of the Adviser that provide services to the Portfolio (“Affiliated Service Providers”).
Information about Portfolio Management
Descriptions of the investment management services provided by the Adviser, including its investment strategies and processes;
Information concerning the allocation of brokerage; and
Information regarding the procedures and processes used to value the assets of the Portfolio.
Information about the Adviser
Reports detailing the financial results and condition of the Adviser and its affiliates;
Descriptions of the qualifications, education and experience of the individual investment and other professionals responsible for managing the portfolio of the Portfolio and for Portfolio operations;
Information relating to compliance with and the administration of the Code of Ethics adopted by the Adviser;
Information about the Adviser’s proxy voting policies and procedures and information regarding the Adviser’s practices for overseeing proxy vendors;
Information concerning the resources devoted by the Adviser to overseeing compliance by the Portfolio and its service providers, including information concerning compliance with investment policies and restrictions and other operating policies of the Portfolio;
A description of the adequacy and sophistication of the Adviser’s technology and systems with respect to investment and administrative matters and a description of any material improvements or changes in technology or systems in the past year;
A description of the business continuity and disaster recovery plans of the Adviser; and
Information regarding the Adviser’s risk management processes.
Other Relevant Information
Information concerning the nature, extent, quality and cost of services provided to the Portfolio by SSGA FM in its capacity as the Portfolio’s administrator (the “Administrator”);
Information concerning the nature, extent, quality and cost of various non-investment management services provided to the Portfolio by affiliates of the Adviser, including the custodian, sub-administrator, fund accountant, transfer agent and securities lending agent of the Portfolio, and the role of the Adviser in managing the Portfolio’s relationship with these service providers;
Copies of the Advisory Agreement and agreements with other service providers of the Portfolio;
Responses to a request for information reviewed prior to the April 2, 2025 and May 7-8, 2025 meetings by Independent Counsel, requesting specific information from each of:
o SSGA FM, in its capacity as the Portfolio’s Adviser and Administrator, with respect to its operations relating to the Portfolio and its approximate profit margins from such operations for the calendar year ended December 31, 2024; and the relevant operations of other Affiliated Service Providers to the Portfolio, together with their approximate profit margins from such relevant operations for the calendar year ended December 31, 2024;
o State Street Bank and Trust Company (“State Street”), the sub-administrator and custodian for the Portfolio and transfer agent and securities lending agent for the Portfolio, with respect to its operations relating to the Portfolio; and
o State Street Global Advisors Funds Distributors, LLC, the principal underwriter and distributor of the shares of the Portfolio (the “Distributor”), with respect to its operations relating to the Portfolio;
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Statement Regarding Basis for Approval of Investment Advisory Contract
June 30, 2025 (Unaudited)

Information from the Adviser, State Street and the Distributor with respect to the Trust providing any material changes to the previous information supplied in response to the letter from Independent Counsel prior to the executive session of the Board on May 7-8, 2025; and
Materials provided by Broadridge, circulated to the Independent Trustees and to Independent Counsel.
In addition to the information identified above, the Board considered information provided from time to time by the Adviser, and other service providers of the Portfolio throughout the year at meetings of the Board and its committees. At such meetings, the Trustees received, among other things, presentations by the portfolio managers and other investment professionals of the Adviser relating to the performance of the Portfolio and the investment strategies used in pursuing the Portfolio’s investment objective.
The Independent Trustees were assisted throughout the contract review process by their Independent Counsel. The Independent Trustees relied upon the advice of such counsel and their own business judgment in determining the material factors to be considered in evaluating the Advisory Agreement, and the weight to be given to each such factor. The conclusions reached with respect to the Advisory Agreement were based on a comprehensive evaluation of all the information provided and not any single factor. Moreover, each Trustee may have placed varying emphasis on particular factors in reaching conclusions with respect to the Portfolio.
Results of the Process
Based on a consideration of the foregoing and such other information as deemed relevant, including the factors and conclusions described below, at the meeting held on May 7-8, 2025, the Board, including a majority of the Independent Trustees, voted to approve the continuation of the Advisory Agreement effective June 1, 2025, for an additional year with respect to the Portfolio.
Nature, Extent and Quality of Services
In considering whether to approve the Advisory Agreement, the Board evaluated the nature, extent and quality of services provided to the Portfolio by the Adviser.
The Board considered the Adviser’s management capabilities and investment process with respect to the types of investments held by the Portfolio, including the education, experience and number of investment professionals and other personnel who provide portfolio management, investment research, and similar services to the Portfolio. The Board evaluated, where relevant, the abilities and experience of such investment personnel in analyzing particular markets, industries and specific issuers of securities in these markets and industries. The Board also considered the substantial expertise of the Adviser in developing and applying proprietary quantitative models for managing various funds that invest primarily in equity securities. The Board considered the extensive experience and resources committed by the Adviser to risk management, including with respect to investment risk, liquidity risk, operational risk, counterparty risk and model risk. Further, the Board considered material enhancements made to the risk management processes and systems over the past year. The Trustees also considered the significant risks assumed by the Adviser in connection with the services provided to the Portfolio, including reputational and entrepreneurial risks. The Board also took into account the compensation paid to recruit and retain investment personnel, and the time and attention devoted to the Portfolio by senior management, as well as the Adviser’s succession planning process.
The Board had previously reviewed the compliance programs of the Adviser and various Affiliated Service Providers. Among other things, the Board considered compliance and reporting matters relating to personal trading by investment personnel, selective disclosure of portfolio holdings, late trading, frequent trading, portfolio valuation, business continuity, the allocation of investment opportunities and the voting of proxies.  The Board also considered the role of the Adviser in overseeing the Portfolio’s securities lending activities.
On the basis of the foregoing and other relevant information, the Board concluded that the Adviser can be expected to continue to provide high quality investment management and related services for the Portfolio.
Portfolio Performance
The Board compared the Portfolio’s investment performance to the performance of an appropriate benchmark and universe of comparable mutual funds for various time periods ended December 31, 2024. For purposes of these comparisons the Independent Trustees relied on the Performance Group, Performance Universe and Benchmark and the analyses of the related data provided by Broadridge. It was noted that while the Board found the Broadridge data generally useful, they recognized its limitations, including that the data may vary depending on the end date selected and that the results of the performance comparisons may vary depending on the selection of the peer group and its composition over time. The Board also noted that it had received and discussed with management information throughout the year at periodic intervals comparing the Fund’s performance against its
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STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract
June 30, 2025 (Unaudited)

benchmark and against the Fund’s peers. The Board also considered the Fund’s performance in light of overall financial market conditions. Among other information, the Board considered the following performance information in its evaluation of the Portfolio:
State Street International Developed Equity Index Portfolio. The Board considered that the Fund’s performance was below the medians of its Performance Group and Performance Universe for the 1-year period and was above the medians of its Performance Group and Performance Universe for the 3- and 5-year periods.  The Board also considered that the Fund’s performance was below the Benchmark for the 1- and 3-year periods and was above the Benchmark for the 5-year period. The Board also took into account the fact that the Fund is designed to track a designated index.
On the basis of the foregoing and other relevant information, the Board concluded that the performance of the Portfolio is satisfactory.
Management Fees and Expenses
The Board reviewed the contractual investment advisory fee rates payable by the Portfolio and actual fees paid by the Portfolio, net of waivers. As part of its review, the Board considered the Portfolio’s management fee and total expense ratio, including the portion attributable to administrative services provided by SSGA FM (both before and after giving effect to any expense caps), as compared to its Expense Group and Expense Universe, as constructed by Broadridge, and the related Broadridge analysis for the Portfolio. The Board also considered the comparability of the fees charged and the services provided to the Portfolio by the Adviser to the fees charged and services provided to other clients of the Adviser, including institutional accounts. Among other information, the Board considered the following expense information in its evaluation of the Portfolio:
State Street International Developed Equity Index Portfolio. The Board considered that the Fund’s actual management fee was below the medians of its Expense Group and Expense Universe. The Board also considered that the Fund’s total expenses were below the medians of its Expense Group and Expense Universe.
On the basis of the foregoing and other relevant information, and in light of the nature, extent and quality of the services provided by the Adviser, the Board concluded that the fees and the expense ratio of the Portfolio compare favorably to the fees and expenses of the Expense Group and Expense Universe and are reasonable in relation to the services provided.
Profitability
The Board reviewed the level of profits realized by the Adviser and its affiliates in providing investment advisory and other services to the Portfolio and to all funds within the fund complex. The Board considered other direct and indirect benefits received by the Adviser and Affiliated Service Providers in connection with their relationships with the Portfolio, together with the profitability of each of the Affiliated Service Providers with respect to their services to the Portfolio and/or fund complex. The Board also considered the various risks borne by SSGA FM and State Street in connection with their various roles in servicing the Trust, including reputational and entrepreneurial risks.
The Board concluded that the profitability of the Adviser with respect to the Portfolio, and the profitability range of each of the Affiliated Service Providers with respect to its services to the Portfolio, were reasonable in relation to the services provided.
Economies of Scale
In reviewing management fees and profitability, the Board also considered the extent to which the Adviser and its affiliates, on the one hand, and the Portfolio and the fund complex, on the other hand, can expect to realize benefits from economies of scale as the assets of the Portfolio and fund complex increase. The Board acknowledged the difficulty in accurately measuring the benefits resulting from the economies of scale with respect to the management of the Portfolio or the fund complex taken as a whole. The Board concluded that, in light of the current size of the Portfolio and the fund complex, the level of profitability of the Adviser and its affiliates with respect to the Portfolio and the fund complex over various time periods, and the comparative management fee and expense ratio of the Portfolio during these periods, it does not appear that the Adviser or its affiliates has realized benefits from economies of scale in managing the assets of the Portfolio to such an extent that previously agreed advisory fees should be reduced or that breakpoints in such fees should be implemented for the Portfolio at this time.
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STATE STREET MASTER FUNDS
STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX PORTFOLIO
Statement Regarding Basis for Approval of Investment Advisory Contract
June 30, 2025 (Unaudited)

Conclusions
In reaching its decision to approve the Advisory Agreement, the Board did not identify any single factor as being controlling, but based its recommendation on each of the factors it considered. Each Trustee may have contributed different weight to the various factors. Based upon the materials reviewed, the representations made and the considerations described above, and as part of its deliberations, the Board, including the Independent Trustees, concluded that the Adviser possesses the capability and resources to perform the duties required of them under the Advisory Agreement.
Further, based upon its review of the Advisory Agreement, the materials provided, and the considerations described above, the Board, including the Independent Trustees, concluded that (1) the terms of the Advisory Agreement are reasonable, fair, and in the best interests of the Portfolio and its shareholders, and (2) the rates payable under the Advisory Agreement are fair and reasonable in light of the usual and customary charges made for services of the same nature and quality.
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Item 8. Changes in and Disagreements with Accountants for Open-End Management Investment Companies

Not applicable to the Registrant.

Item 9. Proxy Disclosures for Open-End Management Investment Companies

Not applicable to the Registrant.

Item 10. Remuneration Paid to Directors, Officers, and Others of Open-End Management Investment Companies

Renumeration Paid to Directors, Officers, and Others of Open-End Investment Companies is included as part of the Financial Statements filed under Item 7(a) of this Form.


Item 11. Statement Regarding Basis for Approval of Investment Advisory Contract

The Registrant’s Statement Regarding Basis for Approval of Investment Advisory Contract is included as part of the Financial Statements filed under Item 7(a) of this Form.

Item 12. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies.

Not applicable to the Registrant.

Item 13. Portfolio Managers of Closed-End Management Investment Companies.

Not applicable to the Registrant.

Item 14. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers.

Not applicable to the Registrant.

Item 15. Submission of Matters to a Vote of Security Holders.

There were no material changes to the procedures by which shareholders may recommend nominees to the Registrant’s Board.

Item 16. Controls and Procedures.

(a) The Trust’s principal executive officer and principal financial officer have concluded that the Trust’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective to provide reasonable assurance that information required to be disclosed by the Registrant on Form N-CSR is recorded, processed, summarized and reported as of a date within 90 days of the filing date of this report, based on their evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rules 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934, as amended.

(b) There were no changes in the Trust’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the period covered by this report that have materially affected, or are reasonably likely to materially affect, the Trust’s internal control over financial reporting.

Item 17. Disclosure of Securities Lending Activities for Closed-End Management Investment Companies.

(a) Not applicable to the Registrant.

(b) Not applicable to the Registrant.

Item 18. Recovery of Erroneously Awarded Compensation

Not applicable to the Registrant.


Item 19. Exhibits.

(a)(1) Not applicable to this filing; this Form N-CSR is a Semi-Annual Report.

(a)(2) Not applicable to the Registrant.

(a)(3) Certifications of principal executive officer and principal financial and accounting officer of the Trust as required by Rule 30a-2(a) under the 1940 Act are attached hereto.

(a)(4) Not applicable to the Registrant.

(a)(5) Not applicable to the Registrant.

(b) Certifications of principal executive officer and principal financial and accounting officer of the Trust as required by Rule 30a-2(b) under the 1940 Act and Section 906 of the Sarbanes-Oxley Act of 2002 are attached hereto.

(101) Inline Interactive Data File - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the inline XBRL document.


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

STATE STREET MASTER FUNDS
By:  

/s/ Ann M. Carpenter

 

Ann M. Carpenter

 

President

Date: September 4, 2025

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

 

By:  

/s/ Ann M. Carpenter

  Ann M. Carpenter
  President

Date: September 4, 2025

 

By:  

/s/ Bruce S. Rosenberg

  Bruce S. Rosenberg
  Treasurer (Principal Financial and Accounting Officer)

Date: September 4, 2025