# EDGAR Filing Document

**Accession Number:** 0000820892
**File Stem:** 0000820892-26-000108
**Filing Date:** 2026-3
**Character Count:** 7970
**Document Hash:** f868c8a3ed30fb7dd241cfb9d11d2175
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000820892-26-000108.hdr.sgml**: 20260331

**ACCESSION NUMBER**: 0000820892-26-000108

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

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260331

**DATE AS OF CHANGE**: 20260331

**EFFECTIVENESS DATE**: 20260331

**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:** 26819341

**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 Real Estate Securities Fund (Series ID: S000005563)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | FREAX         | C000015147 |
| Class C    | FRLCX         | C000015149 |
| Class I    | FARCX         | C000015151 |
| Class R6   | FREGX         | C000126484 |

---

### Nuveen Global Infrastructure Fund (Series ID: S000020012)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | FGIAX         | C000056118 |
| Class I    | FGIYX         | C000056119 |
| Class C    | FGNCX         | C000070757 |
| Class R6   | FGIWX         | C000171406 |
| ETF Class  | nan           | C000275827 |

---

### Nuveen Real Asset Income Fund (Series ID: S000033768)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | NRIAX         | C000104365 |
| Class C    | NRICX         | C000104366 |
| Class I    | NRIIX         | C000104368 |
| Class R6   | NRIFX         | C000171407 |

---

## Series and Classes Contracts Data

### Nuveen Real Estate Securities Fund (Series ID: S000005563)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000015147 | Class A      | FREAX           |
| C000015149 | Class C      | FRLCX           |
| C000015151 | Class I      | FARCX           |
| C000126484 | Class R6     | FREGX           |

### Nuveen Global Infrastructure Fund (Series ID: S000020012)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000056118 | Class A      | FGIAX           |
| C000056119 | Class I      | FGIYX           |
| C000070757 | Class C      | FGNCX           |
| C000171406 | Class R6     | FGIWX           |
| C000275827 | ETF Class    |  |

### Nuveen Real Asset Income Fund (Series ID: S000033768)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000104365 | Class A      | NRIAX           |
| C000104366 | Class C      | NRICX           |
| C000104368 | Class I      | NRIIX           |
| C000171407 | Class R6     | NRIFX           |

## 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:** 12/31/2025

**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:** $192649616.87

- **(ii) Aggregate price of securities redeemed or repurchased during the fiscal year:** $440938560.64

- **(iii) Aggregate price of securities redeemed or repurchased during any prior fiscal year:** $3165679352.71

- **(iv) Total available redemption credits [add Items 5(ii) and 5(iii)]:** $3606617913.35

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

- **(vi) Redemption credits available for use in future years:** $-3413968296.48

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

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

**Signatures**

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

**Date:** 03/31/2026

**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:** 12/31/2025

**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:** $144447751.91

- **(ii) Aggregate price of securities redeemed or repurchased during the fiscal year:** $157149589.77

- **(iii) Aggregate price of securities redeemed or repurchased during any prior fiscal year:** $259435450.44

- **(iv) Total available redemption credits [add Items 5(ii) and 5(iii)]:** $416585040.21

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

- **(vi) Redemption credits available for use in future years:** $-272137288.30

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

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

**Signatures**

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

**Date:** 03/31/2026

**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:** 12/31/2025

**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:** $252978719.97

- **(ii) Aggregate price of securities redeemed or repurchased during the fiscal year:** $250054843.12

- **(iii) Aggregate price of securities redeemed or repurchased during any prior fiscal year:** $775504069.07

- **(iv) Total available redemption credits [add Items 5(ii) and 5(iii)]:** $1025558912.19

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

- **(vi) Redemption credits available for use in future years:** $-772580192.22

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

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

**Signatures**

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

**Date:** 03/31/2026

**Signature:** Geoffrey Noyes