# EDGAR Filing Document

**Accession Number:** 0001976685
**File Stem:** 0001976685-25-000024
**Filing Date:** 2025-7
**Character Count:** 1035
**Document Hash:** 5d969cc9f6e6ed2530053ead1a6b6589
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001976685-25-000024.hdr.sgml**: 20250717

**ACCESSION NUMBER**: 0001976685-25-000024

**CONFORMED SUBMISSION TYPE**: 497AD

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250717

**DATE AS OF CHANGE**: 20250717

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Institutional Investment Strategy Fund
- **CENTRAL INDEX KEY:** 0001976685

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 497AD
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-271745
- **FILM NUMBER:** 251130241

**BUSINESS ADDRESS:**
- **STREET 1:** 2261 MARKET STREET
- **STREET 2:** #5190
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94114
- **BUSINESS PHONE:** 800-535-7096

**MAIL ADDRESS:**
- **STREET 1:** 2261 MARKET STREET
- **STREET 2:** #5190
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94114

### Attached PDF Documents

**Attachment 1:** `iisf-factsheet_june2025.pdf`

_No text found in this document._