# EDGAR Filing Document

**Accession Number:** 0001107414
**File Stem:** 0001193125-23-007237
**Filing Date:** 2023-1
**Character Count:** 6729
**Document Hash:** 467e8b99ce747fa9a573a6f88017690f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-007237.hdr.sgml**: 20230112

**ACCESSION NUMBER**: 0001193125-23-007237

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230112

**DATE AS OF CHANGE**: 20230112

**EFFECTIVENESS DATE**: 20230112

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** STATE STREET INSTITUTIONAL INVESTMENT TRUST
- **CENTRAL INDEX KEY:** 0001107414
- **IRS NUMBER:** 046910804
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-30810
- **FILM NUMBER:** 23526361

**BUSINESS ADDRESS:**
- **STREET 1:** STATE STREET FINANCIAL CENTER
- **STREET 2:** ONE LINCOLN STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02111
- **BUSINESS PHONE:** 6176623239

**MAIL ADDRESS:**
- **STREET 1:** ONE LINCOLN STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02111

## Series and Classes Contracts Data

### State Street Target Retirement 2020 Fund (Series ID: S000046035)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000143864 | Class I      | SSBNX           |
| C000143865 | Class K      | SSBOX           |
| C000232294 | Class R3     | SSADX           |

**STATE STREET INSTITUTIONAL INVESTMENT TRUST** 

**(The "Trust")** 

*Supplement dated January 12, 2023 to the* 

*Summary Prospectuses, Prospectuses and Statements of Additional Information,* 

*each dated as set forth on Appendix A,* 

*as may be supplemented and/or revised from time to time,* 

*with respect to the series of the Trust (the "Funds") listed on Appendix A* 

***Effective January 3, 2023, the name of the Transfer Agent of Funds has changed to SS&C GIDS, Inc. Accordingly, effective immediately, all references to DST Asset Manager Solutions, Inc. will be replaced with SS&C GIDS, Inc.***

**PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE** 

011223SUPP1

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**APPENDIX A** 

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| | | | |
|:---|:---|:---|:---|
| STATE STREET EQUITY 500 INDEX FUND<br> Administrative Shares (STFAX)<br> Class R Shares (SSFRX)<br> Service Shares (STBIX)<br> Class A (SSSVX)<br> Class I (SSSWX)<br> Class K (SSSYX) | April 30, 2022 | STATE STREET TARGET RETIREMENT 2065 FUND<br> Class I (SSFJX)<br> Class K (SSFKX)<br> Class R3 (SSFPX) | April 30, 2022 |
| STATE STREET AGGREGATE BOND INDEX FUND<br> Class A (SSFCX)<br> Class I (SSFDX)<br> Class K (SSFEX) | April 30, 2022 | STATE STREET TARGET RETIREMENT FUND<br> Class I (SSFNX)<br> Class K (SSFOX)<br> Class R3 (SSFQX) | April 30, 2022 |
| STATE STREET DIVERSIFIED INCOME FUND<br> Class K (SBFYX) | December 22, 2021 |  |  |
| STATE STREET EMERGING MARKETS EQUITY INDEX FUND<br> Class A (SSUEX)<br> Class I (SSLEX)<br> Class K (SSKEX) | April 30, 2022 |  |  |
| STATE STREET GLOBAL ALL CAP EQUITY EX-U.S. INDEX FUND<br> Class A (SSGHX)<br> Class I (SSGJX)<br> Class K (SSGLX) | April 30, 2022 |  |  |
| STATE STREET HEDGED INTERNATIONAL DEVELOPED EQUITY INDEX FUND<br> Class A (SSHEX)<br> Class I (SSHNX)<br> Class K (SSHQX) | April 30, 2022 |  |  |
| STATE STREET INTERNATIONAL DEVELOPED EQUITY INDEX FUND<br> Class A (SSIHX)<br> Class I (SSIKX)<br> Class K (SSIWX) | April 30, 2022 |  |  |
| STATE STREET SMALL/MID CAP EQUITY INDEX FUND<br> Class A (SSMJX)<br> Class I (SSMLX)<br> Class K (SSMKX) | April 30, 2022 |  |  |
| STATE STREET TARGET RETIREMENT 2020 FUND<br> Class I (SSBNX)<br> Class K (SSBOX)<br> Class R3 (SSADX) | April 30, 2022 | STATE STREET INSTITUTIONAL LIQUID RESERVES FUND<br> Premier Class (SSIXX)<br> Investment Class (SSVXX)<br> Service Class (LRSXX)<br> Institutional Class (SSHXX)<br> Administration Class (SSYXX)<br> Investor Class (SSZXX)<br> Trust Class (TILXX)<br> Opportunity Class (OPIXX)<br> Bancroft Capital Class (VTDXX) | April 30, 2022 |

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| | | | |
|:---|:---|:---|:---|
| STATE STREET TARGET RETIREMENT 2025 FUND<br> Class I (SSBRX)<br> Class K (SSBSX)<br> Class R3 (SSAHX) | April 30, 2022 | STATE STREET INSTITUTIONAL U.S. GOVERNMENT MONEY MARKET FUND<br> Premier Class (GVMXX)<br> Investment Class (GVVXX)<br> Select Class (GVSXX)<br> Institutional Class (SAHXX)<br> Administration Class (SALXX)<br> Investor Class (SAMXX)<br> Class G (SSOXX)<br> Opportunity Class (OPGXX)<br> Cabrera Capital Markets Class (CAHXX)<br> Blaylock Van Class (BUYXX)<br> Bancroft Capital Class (VTGXX) | April 30, 2022 |
| STATE STREET TARGET RETIREMENT 2025 FUND<br> Class I (SSBRX)<br> Class K (SSBSX)<br> Class R3 (SSAHX) | April 30, 2022 |  |  |
| STATE STREET TARGET RETIREMENT 2030 FUND<br> Class I (SSBWX)<br> Class K (SSBYX)<br> Class R3 (SSAJX) | April 30, 2022 |  |  |
| STATE STREET TARGET RETIREMENT 2035 FUND<br> Class I (SSCJX)<br> Class K (SSCKX)<br> Class R3 (SSAZX) | April 30, 2022 | STATE STREET INSTITUTIONAL TREASURY MONEY MARKET FUND<br> Premier Class (TRIXX)<br> Investment Class (TRVXX)<br> Select Class (TYSXX)<br> Administration Class (SSKXX)<br> Institutional Class (SSJXX)<br> Investor Class (SSNXX) | April 30, 2022 |
| STATE STREET TARGET RETIREMENT 2035 FUND<br> Class I (SSCJX)<br> Class K (SSCKX)<br> Class R3 (SSAZX) | April 30, 2022 | Opportunity Class (OPGXX)<br> Cabrera Capital Markets Class (CSJXX)<br> Bancroft Capital Class (VTTXX) |  |
| STATE STREET TARGET RETIREMENT 2040 FUND<br> Class I (SSCNX)<br> Class K (SSCQX) | April 30, 2022 | STATE STREET INSTITUTIONAL TREASURY PLUS MONEY MARKET FUND<br> Investment Class (TPVXX)<br> Premier Class (TPIXX)<br> Select Class (TPSXX)<br> Institutional Class (SAJXX)<br> Investor Class (SAEXX)<br> Administration Class (SSQXX)<br> Trust Class (TPLXX) | April 30, 2022 |
| Class R3 (SSAKX) |  | STATE STREET INSTITUTIONAL TREASURY PLUS MONEY MARKET FUND<br> Investment Class (TPVXX)<br> Premier Class (TPIXX)<br> Select Class (TPSXX)<br> Institutional Class (SAJXX)<br> Investor Class (SAEXX)<br> Administration Class (SSQXX)<br> Trust Class (TPLXX) | April 30, 2022 |
| Class R3 (SSAKX) |  | Opportunity Class (OPTXX) |  |
| Class R3 (SSAKX) |  | Cabrera Capital Markets Class (CAJXX) |  |
| Class R3 (SSAKX) |  | Blaylock Van Class (BVYXX)<br> Bancroft Capital Class (VTLXX) |  |
| STATE STREET TARGET RETIREMENT 2045 FUND<br> Class I (SSDDX)<br> Class K (SSDEX)<br> Class R3 (SSAOX) | April 30, 2022 | STATE STREET TREASURY OBLIGATIONS MONEY MARKET FUND (TAQXX) |  |
| STATE STREET TARGET RETIREMENT 2050 FUND<br> Class I (SSDJX)<br> Class K (SSDLX)<br> Class R3 (SSAUX) | April 30, 2022 |  |  |

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| | |
|:---|:---|
| STATE STREET TARGET RETIREMENT 2055 FUND<br> Class I (SSDOX)<br> Class K (SSDQX)<br> Class R3 (SSAWX) | April 30, 2022 |
| STATE STREET TARGET RETIREMENT 2060 FUND<br> Class I (SSDWX)<br> Class K (SSDYX)<br> Class R3 (SSAYX) | April 30, 2022 |

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