# EDGAR Filing Document

**Accession Number:** 0001107414
**File Stem:** 0001193125-26-044328
**Filing Date:** 2026-2
**Character Count:** 2201
**Document Hash:** 018c1fecdd3864cc95ec62af542c253f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-044328.hdr.sgml**: 20260210

**ACCESSION NUMBER**: 0001193125-26-044328

**CONFORMED SUBMISSION TYPE**: 497J

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260210

**DATE AS OF CHANGE**: 20260210

**EFFECTIVENESS DATE**: 20260210

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** STATE STREET INSTITUTIONAL INVESTMENT TRUST
- **CENTRAL INDEX KEY:** 0001107414

**ORGANIZATION NAME:**
- **EIN:** 046910804
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497J
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-30810
- **FILM NUMBER:** 26615147

**BUSINESS ADDRESS:**
- **STREET 1:** ONE CONGRESS STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02114
- **BUSINESS PHONE:** 6176643920

**MAIL ADDRESS:**
- **STREET 1:** ONE CONGRESS STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02114

## Series and Classes Contracts Data

### State Street Prime Money Market ETF (Series ID: S000100105)

| Class ID   | Class Name                          | Ticker Symbol   |
|:---|:---|:---|
| C000269915 | State Street Prime Money Market ETF | MMK             |

State Street Institutional Investment Trust

One Congress Street

Boston, MA 02114

February 10, 2026

**<u>VIA EDGAR</u>**

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Attention: Office of Filings, Information & Consumer Service

Re: State Street Institutional Investment Trust (the "Trust")

File Nos.: 811-09819 and 333-30810

Dear Sir or Madam:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, we are transmitting for filing via EDGAR on behalf of the Trust this letter as certification that the Prospectus for the Trust, dated February 5, 2026, does not differ from that contained in the Post-Effective Amendment No. 321 to the Trust's Registration Statement on Form N-1A that was filed electronically via EDGAR on February 4, 2026 (Accession # 0001193125-26-038029).

If you have any questions, please contact me at (617) 664-6507.

---

| |
|:---|
|  Very truly yours, |
|  /s/ Edmund Gerard Maiorana, Jr. |
|  Edmund Gerard Maiorana, Jr. |
|  Assistant Secretary |

---