# EDGAR Filing Document

**Accession Number:** 0000820892
**File Stem:** 0000820892-25-000107
**Filing Date:** 2025-11
**Character Count:** 5633
**Document Hash:** 05b1f26a43e44f4ac41d99649497ccf8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000820892-25-000107.hdr.sgml**: 20251126

**ACCESSION NUMBER**: 0000820892-25-000107

**CONFORMED SUBMISSION TYPE**: 24F-2NT

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250831

**FILED AS OF DATE**: 20251126

**DATE AS OF CHANGE**: 20251126

**EFFECTIVENESS DATE**: 20251126

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NUVEEN INVESTMENT FUNDS INC
- **CENTRAL INDEX KEY:** 0000820892

**ORGANIZATION NAME:**
- **EIN:** 411418224
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 24F-2NT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-16905
- **FILM NUMBER:** 251529003

**BUSINESS ADDRESS:**
- **STREET 1:** 333 WEST WACKER DR.
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** 312-917-8146

**MAIL ADDRESS:**
- **STREET 1:** 333 WEST WACKER DR.
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIRST AMERICAN INVESTMENT FUNDS INC
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SECURAL MUTUAL FUNDS INC
- **DATE OF NAME CHANGE:** 19910627

## Series and Classes Contracts Data

### Nuveen Credit Income Fund (Series ID: S000005544)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | FJSIX         | C000015076 |
| Class C    | FCSIX         | C000015078 |
| Class I    | FJSYX         | C000015080 |

---

### Nuveen Strategic Income Fund (Series ID: S000005573)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | FCDDX         | C000015185 |
| Class C    | FCBCX         | C000015187 |
| Class I    | FCBYX         | C000015189 |
| Class R6   | FSFRX         | C000151934 |

---

## Series and Classes Contracts Data

### Nuveen Credit Income Fund (Series ID: S000005544)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000015076 | Class A      | FJSIX           |
| C000015078 | Class C      | FCSIX           |
| C000015080 | Class I      | FJSYX           |

### Nuveen Strategic Income Fund (Series ID: S000005573)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000015185 | Class A      | FCDDX           |
| C000015187 | Class C      | FCBCX           |
| C000015189 | Class I      | FCBYX           |
| C000151934 | Class R6     | FSFRX           |

## FORM 24F-2NT: Annual Notice of Securities Sold Pursuant to Rule 24f-2

### 24F-2NT: Filer Information

**Filer CIK:** 0000820892

**Is this a LIVE or TEST Filing?:** LIVE

**Filer Investment Company Type:** N-1A

### 24F-2NT: Annual Filing Information

**1. Name and address of issuer:**

- **Name of Issuer:** NUVEEN INVESTMENT FUNDS INC

- **Address:** 333 West Wacker Drive, Chicago, IL 60606

**2. The Name and EDGAR Identifier of each series or class of securities for which this Form is filed:**

- [ ] Check box if the Form is being filed for all series and classes of the issuer.

**3. Investment Company Act File Number:** 811-05309

   **Securities Act File Number:** 033-16905

**4(a). Last day of fiscal year for which this Form is filed:** 08/31/2025

**4(b). Check box if this Form is being filed late:** [ ]

**4(c). Check box if this is the last time the issuer will be filing this Form:** [ ]

**5. Calculation of registration fee:**

- **(i) Aggregate sale price of securities sold during the fiscal year:** $509219713.00

- **(ii) Aggregate price of securities redeemed or repurchased during the fiscal year:** $278903803.33

- **(iii) Aggregate price of securities redeemed or repurchased during any prior fiscal year:** $164613235.06

- **(iv) Total available redemption credits [add Items 5(ii) and 5(iii)]:** $443517038.39

- **(v) Net sales:** $65702674.61

- **(vi) Redemption credits available for use in future years:** $0.00

- **(vii) Multiplier for determining registration fee:** 0.0001381

- **(viii) Registration fee due:** $9073.54

**Signatures**

**Name and Title:** MD Performance & Reporting, Fund Administration

**Date:** 11/24/2025

**Signature:** Geoffrey Noyes

### 24F-2NT: Annual Filing Information

**1. Name and address of issuer:**

- **Name of Issuer:** NUVEEN INVESTMENT FUNDS INC

- **Address:** 333 West Wacker Drive, Chicago, IL 60606

**2. The Name and EDGAR Identifier of each series or class of securities for which this Form is filed:**

- [ ] Check box if the Form is being filed for all series and classes of the issuer.

**3. Investment Company Act File Number:** 811-05309

   **Securities Act File Number:** 033-16905

**4(a). Last day of fiscal year for which this Form is filed:** 08/31/2025

**4(b). Check box if this Form is being filed late:** [ ]

**4(c). Check box if this is the last time the issuer will be filing this Form:** [ ]

**5. Calculation of registration fee:**

- **(i) Aggregate sale price of securities sold during the fiscal year:** $204114406.15

- **(ii) Aggregate price of securities redeemed or repurchased during the fiscal year:** $59859310.30

- **(iii) Aggregate price of securities redeemed or repurchased during any prior fiscal year:** $738686558.06

- **(iv) Total available redemption credits [add Items 5(ii) and 5(iii)]:** $798545868.36

- **(v) Net sales:** $0.00

- **(vi) Redemption credits available for use in future years:** $-594431462.21

- **(vii) Multiplier for determining registration fee:** 0.0001381

- **(viii) Registration fee due:** $0.00

**Signatures**

**Name and Title:** MD Performance & Reporting, Fund Administration

**Date:** 11/24/2025

**Signature:** Geoffrey Noyes