# EDGAR Filing Document

**Accession Number:** 0000820892
**File Stem:** 0000820892-26-000069
**Filing Date:** 2026-2
**Character Count:** 25482
**Document Hash:** 8ad474862fa872c1d743191be0cc3322
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000820892-26-000069.hdr.sgml**: 20260226

**ACCESSION NUMBER**: 0000820892-26-000069

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260226

**DATE AS OF CHANGE**: 20260225

**PERIOD START**: 20251231

**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:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-05309
- **FILM NUMBER:** 26680742

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

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** Nuveen Investment Funds, Inc.

- **b. Investment Company Act file number:** 811-05309

- **c. CIK number of Registrant:** 0000820892

- **d. LEI of Registrant:** 549300L93TESPETT4366

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 333 W. Wacker Dr

  - **City:** Chicago

  - **State:** IL

  - **Foreign country:** US

  - **Zip / Postal Code:** 60606

  - **Telephone number:** 312-917-7700

**Item A.2. Information about the Series.**

- **a. Name of Series:** Nuveen Real Estate Securities Fund

- **b. EDGAR series identifier (if any):** S000005563

- **c. LEI of Series:** 549300ENQ1MYMBCWEJ06

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2025-12-31

- **b. Date as of which information is reported:** 2025-12-31

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $763414767.00

**Total Liabilities:** $1172198.00

**Net Assets:** $762242569.00

**Cash Not Reported:** $166153.00

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000015151 | -0.73%               | 2.14%                | -2.00%               |
| Class ID C000015149 | -0.79%               | 2.02%                | -2.03%               |
| Class ID C000126484 | -0.72%               | 2.10%                | -1.98%               |
| Class ID C000015147 | -0.68%               | 2.06%                | -2.00%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $5233129.07              | $-11293384.37                              |
| Month 2  | $6804024.45              | $9703852.42                                |
| Month 3  | $11839011.54             | $-33547509.87                              |

### Schedule of Portfolio Investments

| Name                                        | Title                                       | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| LXP Industrial Trust                        | LXP Industrial Trust                        | CUSIP: 529043408<br>LEI: 549300S4MH2ICXDBFV43 | Long             | EC               | CORP              | US        |     45100 | NS      | $2236058.00   | 0.29%             |  |  |  | No            |                  1 | On Loan: No      |
| EastGroup Properties Inc                    | EastGroup Properties Inc                    | CUSIP: 277276101<br>LEI: 31TIGQQZC4P6JMHKSW85 | Long             | EC               | CORP              | US        |    108403 | NS      | $19310910.42  | 2.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Broadstone Net Lease Inc                    | Broadstone Net Lease Inc                    | CUSIP: 11135E203<br>LEI: 549300U8D7PT70B49V21 | Long             | EC               | CORP              | US        |    522646 | NS      | $9078361.02   | 1.19%             |  |  |  | No            |                  1 | On Loan: No      |
| STATE STREET BANK AND TRUST COMPANY         | Fixed Income Clearing Corporation           | CUSIP: 85748R009<br>LEI: N/A                  | Long             | RA               | CORP              | US        |   3000000 | PA      | $3000000.00   | 0.39%             |  |  |  | No            |                  2 | On Loan: No      |
| Kimco Realty Corp                           | Kimco Realty Corp                           | CUSIP: 49446R109<br>LEI: 254900ARY41P4V1JL861 | Long             | EC               | CORP              | US        |    734435 | NS      | $14886997.45  | 1.95%             |  |  |  | No            |                  1 | On Loan: No      |
| Essex Property Trust Inc                    | Essex Property Trust Inc                    | CUSIP: 297178105<br>LEI: 549300TR2H2VEFX0NC60 | Long             | EC               | CORP              | US        |     47025 | NS      | $12305502.00  | 1.61%             |  |  |  | No            |                  1 | On Loan: No      |
| Iron Mountain Inc                           | Iron Mountain Inc                           | CUSIP: 46284V101<br>LEI: SQL3F6CKNNBM3SQGHX24 | Long             | EC               | CORP              | US        |    314124 | NS      | $26056585.80  | 3.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Smartstop Self Storage REIT Inc             | Smartstop Self Storage REIT Inc             | CUSIP: 83192D402<br>LEI: 549300EC266625K12S42 | Long             | EC               | CORP              | US        |    164762 | NS      | $5097736.28   | 0.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Urban Edge Properties                       | Urban Edge Properties                       | CUSIP: 91704F104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    110503 | NS      | $2120552.57   | 0.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Rexford Industrial Realty Inc               | Rexford Industrial Realty Inc               | CUSIP: 76169C100<br>LEI: 549300MSLO0DF0EMX355 | Long             | EC               | CORP              | US        |    119605 | NS      | $4631105.60   | 0.61%             |  |  |  | No            |                  1 | On Loan: No      |
| Crown Castle Inc                            | Crown Castle Inc                            | CUSIP: 22822V101<br>LEI: 54930012H97VSM0I2R19 | Long             | EC               | CORP              | US        |    291719 | NS      | $25925067.53  | 3.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Welltower Inc                               | Welltower Inc                               | CUSIP: 95040Q104<br>LEI: 254900F33BIAR82QTA19 | Long             | EC               | CORP              | US        |    397679 | NS      | $73813199.19  | 9.68%             |  |  |  | No            |                  1 | On Loan: No      |
| Essential Properties Realty Trust Inc       | Essential Properties Realty Trust Inc       | CUSIP: 29670E107<br>LEI: 2549009LXQLVYCGLZO50 | Long             | EC               | CORP              | US        |    203270 | NS      | $6028988.20   | 0.79%             |  |  |  | No            |                  1 | On Loan: No      |
| Empire State Realty Trust Inc               | Empire State Realty Trust Inc               | CUSIP: 292104106<br>LEI: 549300VOKY1DUEQSB456 | Long             | EC               | CORP              | US        |    284956 | NS      | $1857913.12   | 0.24%             |  |  |  | No            |                  1 | On Loan: No      |
| VICI Properties Inc                         | VICI Properties Inc                         | CUSIP: 925652109<br>LEI: 254900RKH6RY9KCJQH63 | Long             | EC               | CORP              | US        |    276903 | NS      | $7786512.36   | 1.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Lineage Inc                                 | Lineage Inc                                 | CUSIP: 53566V106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    171138 | NS      | $5989830.00   | 0.79%             |  |  |  | No            |                  1 | On Loan: No      |
| Macerich Co/The                             | Macerich Co/The                             | CUSIP: 554382101<br>LEI: 529900PSWCB5KI0JYU46 | Long             | EC               | CORP              | US        |    214707 | NS      | $3963491.22   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Veris Residential Inc                       | Veris Residential Inc                       | CUSIP: 554489104<br>LEI: 254900KTVBRYJCQU2J23 | Long             | EC               | CORP              | US        |    197671 | NS      | $2941344.48   | 0.39%             |  |  |  | No            |                  1 | On Loan: No      |
| American Tower Corp                         | American Tower Corp                         | CUSIP: 03027X100<br>LEI: 5493006ORUSIL88JOE18 | Long             | EC               | CORP              | US        |    108372 | NS      | $19026872.04  | 2.50%             |  |  |  | No            |                  1 | On Loan: No      |
| COPT Defense Properties                     | COPT Defense Properties                     | CUSIP: 22002T108<br>LEI: YY1J47X6LF9TYY8JY420 | Long             | EC               | CORP              | US        |    155544 | NS      | $4324123.20   | 0.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Public Storage                              | Public Storage                              | CUSIP: 74460D109<br>LEI: 254900GLQZAD4N7N5Q19 | Long             | EC               | CORP              | US        |     65813 | NS      | $17078473.50  | 2.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Realty Income Corp                          | Realty Income Corp                          | CUSIP: 756109104<br>LEI: 549300CUWDAUZSH43859 | Long             | EC               | CORP              | US        |    138974 | NS      | $7833964.38   | 1.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Lamar Advertising Co                        | Lamar Advertising Co                        | CUSIP: 512816109<br>LEI: 529900Y8WW4MKVPTB543 | Long             | EC               | CORP              | US        |     27488 | NS      | $3479431.04   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Ryman Hospitality Properties Inc            | Ryman Hospitality Properties Inc            | CUSIP: 78377T107<br>LEI: 529900GCCWW9SRMPJR11 | Long             | EC               | CORP              | US        |     26487 | NS      | $2506199.94   | 0.33%             |  |  |  | No            |                  1 | On Loan: No      |
| CubeSmart                                   | CubeSmart                                   | CUSIP: 229663109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    136990 | NS      | $4938489.50   | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Extra Space Storage Inc                     | Extra Space Storage Inc                     | CUSIP: 30225T102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    148428 | NS      | $19328294.16  | 2.54%             |  |  |  | No            |                  1 | On Loan: No      |
| First Industrial Realty Trust Inc           | First Industrial Realty Trust Inc           | CUSIP: 32054K103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    149824 | NS      | $8580420.48   | 1.13%             |  |  |  | No            |                  1 | On Loan: No      |
| Equity Residential                          | Equity Residential                          | CUSIP: 29476L107<br>LEI: 5493008RACSH5EP3PI59 | Long             | EC               | CORP              | US        |    400828 | NS      | $25268197.12  | 3.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Highwoods Properties Inc                    | Highwoods Properties Inc                    | CUSIP: 431284108<br>LEI: ZIIGTYKL9T0X3HLTDX53 | Long             | EC               | CORP              | US        |    200819 | NS      | $5185146.58   | 0.68%             |  |  |  | No            |                  1 | On Loan: No      |
| Sun Communities Inc                         | Sun Communities Inc                         | CUSIP: 866674104<br>LEI: 549300H5GEOJYN41ZG57 | Long             | EC               | CORP              | US        |    111319 | NS      | $13793537.29  | 1.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Brixmor Property Group Inc                  | Brixmor Property Group Inc                  | CUSIP: 11120U105<br>LEI: 5299007UXW6Y0W2EGZ95 | Long             | EC               | CORP              | US        |    416577 | NS      | $10922648.94  | 1.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Camden Property Trust                       | Camden Property Trust                       | CUSIP: 133131102<br>LEI: 5493002MYX22OHYJBD89 | Long             | EC               | CORP              | US        |     88675 | NS      | $9761344.00   | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Marriott International Inc/MD               | Marriott International Inc/MD               | CUSIP: 571903202<br>LEI: 225YDZ14ZO8E1TXUSU86 | Long             | EC               | CORP              | US        |     12719 | NS      | $3945942.56   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| NNN REIT Inc                                | NNN REIT Inc                                | CUSIP: 637417106<br>LEI: 5493008JKH5SOTI0JS97 | Long             | EC               | CORP              | US        |    120848 | NS      | $4789206.24   | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| Equinix Inc                                 | Equinix Inc                                 | CUSIP: 29444U700<br>LEI: 549300EVUN2BTLJ3GT74 | Long             | EC               | CORP              | US        |     61995 | NS      | $47498089.20  | 6.23%             |  |  |  | No            |                  1 | On Loan: No      |
| Douglas Emmett Inc                          | Douglas Emmett Inc                          | CUSIP: 25960P109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    209805 | NS      | $2305756.95   | 0.30%             |  |  |  | No            |                  1 | On Loan: No      |
| Regency Centers Corp                        | Regency Centers Corp                        | CUSIP: 758849103<br>LEI: 529900053A7X7FJ97S58 | Long             | EC               | CORP              | US        |    115320 | NS      | $7960539.60   | 1.04%             |  |  |  | No            |                  1 | On Loan: No      |
| EPR Properties                              | EPR Properties                              | CUSIP: 26884U109<br>LEI: 549300YSSXFHMPOWZ492 | Long             | EC               | CORP              | US        |     79841 | NS      | $3984065.90   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Chartwell Retirement Residences             | Chartwell Retirement Residences             | CUSIP: 16141A103<br>LEI: 549300M7UBEIZBWP4069 | Long             | EC               | CORP              | CA        |    753575 | NS      | $11035559.72  | 1.45%             |  |  |  | No            |                  1 | On Loan: No      |
| NETSTREIT Corp                              | NETSTREIT Corp                              | CUSIP: 64119V303<br>LEI: 254900CJL0EDMEQ25Q84 | Long             | EC               | CORP              | US        |    330462 | NS      | $5829349.68   | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Prologis Inc                                | Prologis Inc                                | CUSIP: 74340W103<br>LEI: 529900DFH19P073LZ636 | Long             | EC               | CORP              | US        |    508410 | NS      | $64903620.60  | 8.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Four Corners Property Trust Inc             | Four Corners Property Trust Inc             | CUSIP: 35086T109<br>LEI: 549300SVTPZPBDVNER42 | Long             | EC               | CORP              | US        |    227880 | NS      | $5254912.80   | 0.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Weyerhaeuser Co                             | Weyerhaeuser Co                             | CUSIP: 962166104<br>LEI: 08IRJODWFYBI7QWRGS31 | Long             | EC               | CORP              | US        |     52276 | NS      | $1238418.44   | 0.16%             |  |  |  | No            |                  1 | On Loan: No      |
| SITE Centers Corp                           | SITE Centers Corp                           | CUSIP: 82981J851<br>LEI: W2AVA6SODOQ1LCYJQR54 | Long             | EC               | CORP              | US        |    134738 | NS      | $865017.96    | 0.11%             |  |  |  | No            |                  1 | On Loan: No      |
| GO Residential Real Estate Investment Trust | GO Residential Real Estate Investment Trust | CUSIP: 36272H107<br>LEI: N/A                  | Long             | EC               | CORP              | CA        |    258771 | NS      | $3032796.12   | 0.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Sunstone Hotel Investors Inc                | Sunstone Hotel Investors Inc                | CUSIP: 867892101<br>LEI: 529900ZQ2V52V96ATF67 | Long             | EC               | CORP              | US        |     36610 | NS      | $327293.40    | 0.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Acadia Realty Trust                         | Acadia Realty Trust                         | CUSIP: 004239109<br>LEI: 254900C5XLB1YYJQSH07 | Long             | EC               | CORP              | US        |    270162 | NS      | $5549127.48   | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| Simon Property Group Inc                    | Simon Property Group Inc                    | CUSIP: 828806109<br>LEI: 529900GQL5X8H7AO3T64 | Long             | EC               | CORP              | US        |    140959 | NS      | $26092920.49  | 3.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Alexandria Real Estate Equities Inc         | Alexandria Real Estate Equities Inc         | CUSIP: 015271109<br>LEI: MGCJBT4MKTQBVLNUIS88 | Long             | EC               | CORP              | US        |     40199 | NS      | $1967339.06   | 0.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Digital Realty Trust Inc                    | Digital Realty Trust Inc                    | CUSIP: 253868103<br>LEI: 549300HKCZ31D08NEI41 | Long             | EC               | CORP              | US        |    248070 | NS      | $38378909.70  | 5.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Ventas Inc                                  | Ventas Inc                                  | CUSIP: 92276F100<br>LEI: ORQTRC074CWLT3DKHT41 | Long             | EC               | CORP              | US        |    305389 | NS      | $23631000.82  | 3.10%             |  |  |  | No            |                  1 | On Loan: No      |
| SL Green Realty Corp                        | SL Green Realty Corp                        | CUSIP: 78440X887<br>LEI: 549300VQZPJU97H3GT17 | Long             | EC               | CORP              | US        |    165230 | NS      | $7579100.10   | 0.99%             |  |  |  | No            |                  1 | On Loan: No      |
| AvalonBay Communities Inc                   | AvalonBay Communities Inc                   | CUSIP: 053484101<br>LEI: K9G90K85RBWD2LAGQX17 | Long             | EC               | CORP              | US        |     66628 | NS      | $12080322.68  | 1.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Sabra Health Care REIT Inc                  | Sabra Health Care REIT Inc                  | CUSIP: 78573L106<br>LEI: 549300E3BC7GU7TAZ621 | Long             | EC               | CORP              | US        |    428713 | NS      | $8119824.22   | 1.07%             |  |  |  | No            |                  1 | On Loan: No      |
| Invitation Homes Inc                        | Invitation Homes Inc                        | CUSIP: 46187W107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    634200 | NS      | $17624418.00  | 2.31%             |  |  |  | No            |                  1 | On Loan: No      |
| CareTrust REIT Inc                          | CareTrust REIT Inc                          | CUSIP: 14174T107<br>LEI: 5493001NVXE2B9GPLU96 | Long             | EC               | CORP              | US        |    495809 | NS      | $17928453.44  | 2.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Gaming and Leisure Properties Inc           | Gaming and Leisure Properties Inc           | CUSIP: 36467J108<br>LEI: 5493006GWRDBCZYWTM57 | Long             | EC               | CORP              | US        |    410586 | NS      | $18349088.34  | 2.41%             |  |  |  | No            |                  1 | On Loan: No      |
| CBRE Group Inc                              | CBRE Group Inc                              | CUSIP: 12504L109<br>LEI: 52990016II9MJ2OSWA10 | Long             | EC               | CORP              | US        |     39906 | NS      | $6416485.74   | 0.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Agree Realty Corp                           | Agree Realty Corp                           | CUSIP: 008492100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    131362 | NS      | $9462004.86   | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Mid-America Apartment Communities Inc       | Mid-America Apartment Communities Inc       | CUSIP: 59522J103<br>LEI: 549300FQZKFR5YNSHZ21 | Long             | EC               | CORP              | US        |     76782 | NS      | $10665787.62  | 1.40%             |  |  |  | No            |                  1 | On Loan: No      |
| American Homes 4 Rent                       | American Homes 4 Rent                       | CUSIP: 02665T306<br>LEI: 549300ZJUO7A58PNUW40 | Long             | EC               | CORP              | US        |    139209 | NS      | $4468608.90   | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Curbline Properties Corp                    | Curbline Properties Corp                    | CUSIP: 23128Q101<br>LEI: 529900PGR41LH0I81I15 | Long             | EC               | CORP              | US        |     88202 | NS      | $2047168.42   | 0.27%             |  |  |  | No            |                  1 | On Loan: No      |
| WP Carey Inc                                | WP Carey Inc                                | CUSIP: 92936U109<br>LEI: 54930042CRNE713E3Q67 | Long             | EC               | CORP              | US        |    113902 | NS      | $7330732.72   | 0.96%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-12-31

**Name of Applicant:** Nuveen Investment Funds, Inc.

**Signature:** Gina Spunder

**Name of Signer:** Gina Spunder

**Title:** Director, Fund Financial Reporting