# EDGAR Filing Document

**Accession Number:** 0000946110
**File Stem:** 0001104659-26-038431
**Filing Date:** 2026-4
**Character Count:** 3765
**Document Hash:** ff8d5d54df41b158e531116fa177bc62
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-038431.hdr.sgml**: 20260401

**ACCESSION NUMBER**: 0001104659-26-038431

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260401

**DATE AS OF CHANGE**: 20260401

**EFFECTIVENESS DATE**: 20260401

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CREDIT SUISSE OPPORTUNITY FUNDS
- **CENTRAL INDEX KEY:** 0000946110

**ORGANIZATION NAME:**
- **EIN:** 133844865
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-92982
- **FILM NUMBER:** 26827163

**BUSINESS ADDRESS:**
- **STREET 1:** ELEVEN MADISON AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10010
- **BUSINESS PHONE:** 212-325-2000

**MAIL ADDRESS:**
- **STREET 1:** ELEVEN MADISON AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10010

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CREDIT SUISSE WARBURG PINCUS OPPORTUNITY FUNDS
- **DATE OF NAME CHANGE:** 20010129

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DLJ OPPORTUNITY FUNDS
- **DATE OF NAME CHANGE:** 20000801

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DLJ WINTHROP OPPORTUNITY FUNDS
- **DATE OF NAME CHANGE:** 19990222

## Series and Classes Contracts Data

### Credit Suisse Floating Rate High Income Fund (Series ID: S000010522)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class I    | CSHIX         | C000029052 |
| Class A    | CHIAX         | C000029053 |
| Class C    | CHICX         | C000029055 |

---

### Credit Suisse Strategic Income Fund (Series ID: S000038293)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | CSOAX         | C000118186 |
| Class C    | CSOCX         | C000120097 |
| Class I    | CSOIX         | C000120098 |

---

## Series and Classes Contracts Data

### Credit Suisse Floating Rate High Income Fund (Series ID: S000010522)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000029052 | Class I      | CSHIX           |
| C000029053 | Class A      | CHIAX           |
| C000029055 | Class C      | CHICX           |

### Credit Suisse Strategic Income Fund (Series ID: S000038293)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000118186 | Class A      | CSOAX           |
| C000120097 | Class C      | CSOCX           |
| C000120098 | Class I      | CSOIX           |

**CREDIT SUISSE OPPORTUNITY FUNDS**

Credit Suisse Floating Rate High Income Fund

Credit Suisse Strategic Income Fund

**(together, the "Funds")**

**Supplement to the Prospectus and Statement of Additional Information, each dated February 27,<br> 2026, as supplemented to date**

Effective April 1, 2026 (the "Closing Date"), the investment manager of Credit Suisse Commodity Return Strategy Fund (the "Commodity Fund"), a series of Credit Suisse Commodity Strategy Funds, changed from UBS Asset Management (Americas) LLC to O'Connor Alternative Investments, LLC. Also effective on the Closing Date, the name of the Commodity Fund and its trust changed to "Cantor Fitzgerald Commodity Strategy Return Fund" and "Cantor Fitzgerald Commodity Strategy Trust," respectively.

Beginning on the Closing Date, the Commodity Fund is offered pursuant to the Statutory Prospectus and the Statement of Additional Information of the Commodity Fund dated April 1, 2026. All references to the Commodity Fund are hereby deleted from the Statutory Prospectus and Statement of Additional Information of the Funds dated February 27, 2026.

*Shareholders should retain this supplement for future reference.*

---

| | |
|:---|:---|
| Dated: April 1, 2026 | 16-0426 |
|  | for |
|  | CS-PRO |
|  | 2026-001 |

---