# EDGAR Filing Document

**Accession Number:** 0001515671
**File Stem:** 0000940400-25-002079
**Filing Date:** 2025-9
**Character Count:** 37682
**Document Hash:** 1d3b0512d1073fa958c99d3c225c4758
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000940400-25-002079.hdr.sgml**: 20250924

**ACCESSION NUMBER**: 0000940400-25-002079

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250731

**FILED AS OF DATE**: 20250924

**DATE AS OF CHANGE**: 20250924

**PERIOD START**: 20251031

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Duff & Phelps Utility & Infrastructure Fund Inc.
- **CENTRAL INDEX KEY:** 0001515671

**ORGANIZATION NAME:**
- **EIN:** 452261437
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-22533
- **FILM NUMBER:** 251336113

**BUSINESS ADDRESS:**
- **STREET 1:** 10 SOUTH WACKER DRIVE
- **STREET 2:** SUITE 1900
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** (866) 270-7598

**MAIL ADDRESS:**
- **STREET 1:** 10 SOUTH WACKER DRIVE
- **STREET 2:** SUITE 1900
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Duff & Phelps Global Utility Income Fund Inc.
- **DATE OF NAME CHANGE:** 20110627

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Duff & Phelps Global Utility & Midstream Energy Income Fund Inc.
- **DATE OF NAME CHANGE:** 20110316

## Nport-Ex

#### DUFF & PHELPS UTILITY AND INFRASTRUCTURE FUND INC.

#### SCHEDULE OF INVESTMENTS July 31, 2025
(Unaudited)

($ reported in thousands)

---

| | | |
|:---|:---|:---|
| **Shares** | &nbsp;&nbsp;**Description** | &nbsp;&nbsp;**Value** |
| **Common Stocks & MLP Interests—131.2%** | **Common Stocks & MLP Interests—131.2%** | **Common Stocks & MLP Interests—131.2%** |
|  | &nbsp;&nbsp;&nbsp;**■ Airport Services—3.3%** | &nbsp;&nbsp;&nbsp;**■ Airport Services—3.3%** |
| 349000 | Aena SME S.A. (Spain)<sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;$9397 |
| 17000 | Flughafen Zurich AG Registered Shares (Switzerland)<sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4814 |
| 23000 | Grupo Aeroportuario del Centro Norte SAB de C.V. ADR (Mexico)<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2448 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16659 |
|  | &nbsp;&nbsp;&nbsp;**■ Construction & Engineering—0.9%** | &nbsp;&nbsp;&nbsp;**■ Construction & Engineering—0.9%** |
| 191000 | GEK TERNA S.A. (Greece)<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4721 |
|  | &nbsp;&nbsp;&nbsp;**■ Electric Utilities—1.4%** | &nbsp;&nbsp;&nbsp;**■ Electric Utilities—1.4%** |
| 166000 | FirstEnergy Corp. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7090 |
|  | &nbsp;&nbsp;&nbsp;**■ Electric, Gas and Water—80.5%** | &nbsp;&nbsp;&nbsp;**■ Electric, Gas and Water—80.5%** |
| 180390 | Alliant Energy Corp. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11727 |
| 125660 | Ameren Corp. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12708 |
| 154000 | American Electric Power Co.,<br>Inc. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17424 |
| 90800 | Atmos Energy Corp. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14157 |
| 350097 | CenterPoint Energy, Inc. <sup>(1)(2)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13591 |
| 119500 | CMS Energy Corp. <br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8819 |
| 112000 | DTE Energy Co. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15502 |
| 250300 | Duke Energy Corp. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30446 |
| 123600 | Edison International <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6442 |
| 1774000 | Enel SpA (Italy)<sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15655 |
| 220000 | Entergy Corp. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19895 |
| 260000 | Evergy, Inc. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18408 |
| 1073000 | Iberdrola S.A. (Spain)<sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18802 |
| 515000 | NextEra Energy, Inc. <sup>(2)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36596 |
| 161000 | Northwest Natural Holding Co. <br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6427 |
| 1503000 | Pennon Group plc (United Kingdom)<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9893 |
| 1492000 | PG&E Corp. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20918 |
| 530235 | PPL Corp. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18924 |
| 446000 | RWE AG (Germany)<sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18277 |
| 195000 | Severn Trent plc (United Kingdom)<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6822 |
| 204675 | Southern Co. (The) <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19338 |
| 88000 | Spire, Inc. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6553 |

---

---

| | | |
|:---|:---|:---|
| **Shares** | &nbsp;&nbsp;**Description** | &nbsp;&nbsp;**Value** |
| 489000 | SSE plc (United Kingdom)<br>| &nbsp;&nbsp;&nbsp;$11938 |
| 255000 | Veolia Environnement S.A. (France)<sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8643 |
| 123300 | WEC Energy Group, Inc. <br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13450 |
| 345300 | Xcel Energy, Inc. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25359 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;406714 |
|  | &nbsp;&nbsp;&nbsp;**■ Highways & Railtracks—2.9%** | &nbsp;&nbsp;&nbsp;**■ Highways & Railtracks—2.9%** |
| 190000 | Ferrovial SE (Netherlands)<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9735 |
| 533000 | Transurban Group (Australia)<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4734 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14469 |
|  | &nbsp;&nbsp;&nbsp;**■ Integrated Telecommunication Services—4.0%** | &nbsp;&nbsp;&nbsp;**■ Integrated Telecommunication Services—4.0%** |
| 495000 | AT&T, Inc. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13568 |
| 550000 | Infrastrutture Wireless Italiane SpA (Italy)<sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6503 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20071 |
|  | &nbsp;&nbsp;&nbsp;**■ Multi-Utilities—11.1%** | &nbsp;&nbsp;&nbsp;**■ Multi-Utilities—11.1%** |
| 515000 | E.ON SE (Germany)<sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9377 |
| 818250 | National Grid plc (United Kingdom)<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11455 |
| 264000 | NiSource, Inc. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11207 |
| 295400 | Sempra <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24128 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56167 |
|  | &nbsp;&nbsp;&nbsp;**■ Oil & Gas Storage, Transportation and Production—22.1%** | &nbsp;&nbsp;&nbsp;**■ Oil & Gas Storage, Transportation and Production—22.1%** |
| 49300 | Cheniere Energy, Inc. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11629 |
| 61000 | DT Midstream, Inc. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6266 |
| 993185 | Energy Transfer LP <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17917 |
| 127000 | Enterprise Products Partners LP <br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3936 |
| 463000 | Kinder Morgan, Inc. <br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12992 |
| 331575 | MPLX LP <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17408 |
| 69000 | ONEOK, Inc. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5666 |
| 292000 | Plains All American<br>Pipeline LP <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5329 |
| 91000 | Sunoco LP <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5033 |
| 57168 | Targa Resources Corp. <br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9513 |

---

The accompanying note is an integral part of this financial statement.

------

#### DUFF & PHELPS UTILITY AND INFRASTRUCTURE FUND INC.

#### SCHEDULE OF INVESTMENTS—(Continued)

#### July 31, 2025
(Unaudited)

($ reported in thousands)

---

| | | |
|:---|:---|:---|
| **Shares** | &nbsp;&nbsp;**Description** | &nbsp;&nbsp;**Value** |
| 267147 | Williams Cos., Inc. (The) <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;$16015 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;111704 |
|  | &nbsp;&nbsp;&nbsp;**■ Railroads—4.2%** | &nbsp;&nbsp;&nbsp;**■ Railroads—4.2%** |
| 50000 | Canadian National Railway Co. (Canada)<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4669 |
| 86500 | Canadian Pacific Kansas City Ltd. (Canada)<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6361 |
| 279000 | CSX Corp. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9916 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20946 |
|  | &nbsp;&nbsp;&nbsp;**■ Telecom Tower REITs—0.8%** | &nbsp;&nbsp;&nbsp;**■ Telecom Tower REITs—0.8%** |
| 19000 | American Tower Corp. <sup>(1)</sup><br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3959 |
|  | Total Common Stocks & MLP Interests<br> (Cost $551,279) | &nbsp;&nbsp;&nbsp;&nbsp;662500 |
| **TOTAL INVESTMENTS BEFORE WRITTEN OPTIONS—131.2%<br> (Cost $551,279)** | **TOTAL INVESTMENTS BEFORE WRITTEN OPTIONS—131.2%<br> (Cost $551,279)** | &nbsp;&nbsp;&nbsp;&nbsp;662500 |

---

---

| | | |
|:---|:---|:---|
| **Shares** | &nbsp;&nbsp;**Description** | &nbsp;&nbsp;**Value** |
|  | &nbsp;&nbsp;&nbsp;**■ Written Options—(0.0)%** | &nbsp;&nbsp;&nbsp;**■ Written Options—(0.0)%** |
|  | (see Open Written Option Contracts on the next page) | (see Open Written Option Contracts on the next page) |
|  | Total Written Options<br> (Premiums received $212) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(25) |
| **TOTAL INVESTMENTS AFTER WRITTEN OPTIONS—131.2%<br> (Cost $551,067)** | **TOTAL INVESTMENTS AFTER WRITTEN OPTIONS—131.2%<br> (Cost $551,067)** | &nbsp;&nbsp;&nbsp;&nbsp;662475 |
|  | Secured borrowings—(26.7)% | &nbsp;&nbsp;&nbsp;&nbsp;(135000) |
|  | Mandatory Redeemable Preferred Shares at liquidation value—(5.0)% | &nbsp;&nbsp;&nbsp;&nbsp;(25000) |
|  | Other assets less other liabilities—0.5%<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2538 |
| **NET ASSETS APPLICABLE TO COMMON STOCK—100.0%** | **NET ASSETS APPLICABLE TO COMMON STOCK—100.0%** | &nbsp;&nbsp;$505013 |

---

<sup>(1)</sup> All or a portion of the security is segregated as collateral for borrowings. The value of securities segregated as collateral is $333,305.

<sup>(2)</sup> All or a portion of the security is segregated as collateral for written options. The value of securities segregated as collateral is $18,943.

The percentage shown for each investment category is the total value of that category as a percentage of the net assets applicable to common stock of the Fund.

The accompanying note is an integral part of this financial statement.

------

#### DUFF & PHELPS UTILITY AND INFRASTRUCTURE FUND INC.

#### SCHEDULE OF INVESTMENTS—(Continued)

#### July 31, 2025
(Unaudited)

($ reported in thousands)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Open Written Option Contracts as of July 31, 2025, were as follows:** | **Open Written Option Contracts as of July 31, 2025, were as follows:** | **Open Written Option Contracts as of July 31, 2025, were as follows:** | **Open Written Option Contracts as of July 31, 2025, were as follows:** | **Open Written Option Contracts as of July 31, 2025, were as follows:** | **Open Written Option Contracts as of July 31, 2025, were as follows:** |
| &nbsp;&nbsp;**Description of Option** | &nbsp;&nbsp;**Number of<br> Contracts** | &nbsp;&nbsp;**Contract<br> Notional<br> Amount** | &nbsp;&nbsp;**Strike<br> Price<sup>(1)</sup>** | &nbsp;&nbsp;**Expiration<br> Date** | &nbsp;&nbsp;**Value** |
| **Exchange-Traded Call Options** |  |  |  |  |  |
| CenterPoint Energy, Inc.<br>| &nbsp;&nbsp;(2500) | &nbsp;&nbsp;$(10750) | &nbsp;&nbsp;$43.00 | &nbsp;&nbsp;&nbsp;&nbsp;8/15/25 | &nbsp;&nbsp;$— |
| NextEra Energy, Inc.<br>| &nbsp;&nbsp;(1300) | &nbsp;&nbsp;&nbsp;&nbsp;(11050) | &nbsp;&nbsp;&nbsp;&nbsp;85.00 | &nbsp;&nbsp;10/17/25 | &nbsp;&nbsp;&nbsp;&nbsp;(25) |
|  |  |  |  |  | &nbsp;&nbsp;$(25) |
| **Footnote Legend:** | **Footnote Legend:** |  |  |  |  |
| <sup>(1)</sup> Strike price not reported in thousands. | <sup>(1)</sup> Strike price not reported in thousands. | <sup>(1)</sup> Strike price not reported in thousands. |  |  |  |

---

The accompanying note is an integral part of this financial statement.

------

#### DUFF & PHELPS UTILITY AND INFRASTRUCTURE FUND INC.

#### SCHEDULE OF INVESTMENTS—(Continued)

#### July 31, 2025
(Unaudited)

---

| | |
|:---|:---|
| **Sector Allocation\*** | **Sector Allocation\*** |
| Electric, Gas and Water | &nbsp;&nbsp;&nbsp;&nbsp;61% |
| Oil & Gas Storage, Transportation and Production | &nbsp;&nbsp;&nbsp;&nbsp;17 |
| Multi-Utilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8 |
| Railroads | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 |
| Integrated Telecommunication Services | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 |
| Airport Services | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 |
| Highways & Railtracks | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 |
| Electric Utilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |
| Construction & Engineering | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |
| Telecom Tower REITs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |
| **Total** | &nbsp;&nbsp;**100%** |

---

---

| | |
|:---|:---|
| **Country Weightings\*** | **Country Weightings\*** |
| United States | &nbsp;&nbsp;&nbsp;&nbsp;75% |
| United Kingdom | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6 |
| Spain | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 |
| Germany | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 |
| Italy | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 |
| Canada | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 |
| France | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |
| Australia | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |
| Switzerland | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |
| Greece | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |
| Netherlands | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |
| **Total** | &nbsp;&nbsp;**100%** |

---

---

| | |
|:---|:---|
| **Currency Exposure\*** | **Currency Exposure\*** |
| United States Dollar | &nbsp;&nbsp;&nbsp;&nbsp;75% |
| Euro | &nbsp;&nbsp;&nbsp;&nbsp;15 |
| United Kingdom Pound Sterling | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6 |
| Canadian Dollar | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 |
| Australian Dollar | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |
| Swiss Franc | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |
| **Total** | &nbsp;&nbsp;**100%** |

---

\* Percentages are based on total investments before written options rather than net assets applicable to common stock.

The accompanying note is an integral part of this financial statement.

------

#### DUFF & PHELPS UTILITY AND INFRASTRUCTURE FUND INC.

#### SCHEDULE OF INVESTMENTS—(Continued)

#### July 31, 2025

#### Note 1. Investment Valuation
The Fund's investments are carried at fair value which is defined as the price that the Fund might reasonably expect to receive upon selling an investment in a timely transaction to an independent buyer in the principal or most advantageous market for the investment. The three-tier hierarchy of inputs established to classify fair value measurements for disclosure purposes is summarized in the three broad levels listed below:

Level 1—quoted prices in active markets for identical securities

Level 2—other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.)

Level 3—significant unobservable inputs (including the Investment Adviser's Valuation Committee's own assumptions in determining fair value of investments)

The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in these securities. For more information about the Fund's policy regarding valuation of investments and other significant accounting policies, please refer to the Fund's most recent financial statements contained in its semi-annual report.The following is a summary of the inputs used to value each of the Fund's investments at July 31, 2025:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;**Level 1** | &nbsp;&nbsp;**Level 2** |
| Common stocks & MLP interests<br>| &nbsp;&nbsp;$662500 | &nbsp;&nbsp;$— |
| Written options<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(25) | &nbsp;&nbsp;&nbsp;&nbsp;— |
| Total investments<br>| &nbsp;&nbsp;$662475 | &nbsp;&nbsp;$— |

---

There were no Level 3 priced securities held at July 31, 2025 and there were no transfers into or out of Level 3 related to securities held at July 31, 2025.

Other information regarding the Fund is available on the Fund's website <u>www.dpimc.com/dpg</u> or the Securities and Exchange Commission's website at <u>www.sec.gov</u>.

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** Duff & Phelps Utility & Infrastructure Fund Inc.

- **b. Investment Company Act file number:** 811-22533

- **c. CIK number of Registrant:** 0001515671

- **d. LEI of Registrant:** 549300SY2NYDO23RIE89

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

  - **Street Address 1:** 10 South Wacker Drive

  - **City:** Chicago

  - **State:** IL

  - **Foreign country:** US

  - **Zip / Postal Code:** 60606-5802

  - **Telephone number:** 866-270-7598

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

- **a. Name of Series:** Duff & Phelps Utility & Infrastructure Fund Inc.

- **b. EDGAR series identifier (if any):** S000000000

- **c. LEI of Series:** 549300SY2NYDO23RIE89

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

- **a. Date of fiscal year-end:** 2025-10-31

- **b. Date as of which information is reported:** 2025-07-31

**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:** $669108668.72

**Total Liabilities:** $164094884.90

**Net Assets:** $505013783.82

**Cash Not Reported:** $4322085.47

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000000000 | 1.26%                | 0.74%                | 1.46%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $11506646.29             | $-7479766.39                               |
| Month 2  | $5567815.61              | $-2022766.19                               |
| Month 3  | $1193397.64              | $5222614.78                                |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Pennon Group PLC                | Pennon Group PLC                               | CUSIP: 000000000<br>LEI: 213800V1CCTS41GWH423 | Long             | EC               | CORP              | GB        |   1503000 | NS      | $9892925.76   | 1.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Sunoco LP                       | Sunoco LP                                      | CUSIP: 86765K109<br>LEI: 54930001NJU8E40NQ561 | Long             | EC               | CORP              | US        |     91000 | NS      | $5033210.00   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Veolia Environnement SA         | Veolia Environnement SA                        | CUSIP: 000000000<br>LEI: 969500LENY69X51OOT31 | Long             | EC               | CORP              | FR        |    255000 | NS      | $8642878.20   | 1.71%             |  |  |  | No            |                  1 | On Loan: No      |
| Williams Cos Inc/The            | Williams Cos Inc/The                           | CUSIP: 969457100<br>LEI: D71FAKCBLFS2O0RBPG08 | Long             | EC               | CORP              | US        |    267147 | NS      | $16015462.65  | 3.17%             |  |  |  | No            |                  1 | On Loan: No      |
| Atmos Energy Corp               | Atmos Energy Corp                              | CUSIP: 049560105<br>LEI: QVLWEGTD2S8GJMO8D383 | Long             | EC               | CORP              | US        |     90800 | NS      | $14157536.00  | 2.80%             |  |  |  | No            |                  1 | On Loan: No      |
| CMS Energy Corp                 | CMS Energy Corp                                | CUSIP: 125896100<br>LEI: 549300IA9XFBAGNIBW29 | Long             | EC               | CORP              | US        |    119500 | NS      | $8819100.00   | 1.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Energy Transfer LP              | Energy Transfer LP                             | CUSIP: 29273V100<br>LEI: MTLVN9N7JE8MIBIJ1H73 | Long             | EC               | CORP              | US        |    993185 | NS      | $17917057.40  | 3.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Enel SpA                        | Enel SpA                                       | CUSIP: 000000000<br>LEI: WOCMU6HCI0OJWNPRZS33 | Long             | EC               | CORP              | IT        |   1774000 | NS      | $15655371.89  | 3.10%             |  |  |  | No            |                  1 | On Loan: No      |
| Alliant Energy Corp             | Alliant Energy Corp                            | CUSIP: 018802108<br>LEI: 5493009ML300G373MZ12 | Long             | EC               | CORP              | US        |    180390 | NS      | $11727153.90  | 2.32%             |  |  |  | No            |                  1 | On Loan: No      |
| ONEOK Inc                       | ONEOK Inc                                      | CUSIP: 682680103<br>LEI: 2T3D6M0JSY48PSZI1Q41 | Long             | EC               | CORP              | US        |     69000 | NS      | $5665590.00   | 1.12%             |  |  |  | No            |                  1 | On Loan: No      |
| NiSource Inc                    | NiSource Inc                                   | CUSIP: 65473P105<br>LEI: 549300D8GOWWH0SJB189 | Long             | EC               | CORP              | US        |    264000 | NS      | $11206800.00  | 2.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Targa Resources Corp            | Targa Resources Corp                           | CUSIP: 87612G101<br>LEI: 5493003QENHHS261UR94 | Long             | EC               | CORP              | US        |     57168 | NS      | $9513326.88   | 1.88%             |  |  |  | No            |                  1 | On Loan: No      |
| Xcel Energy Inc                 | Xcel Energy Inc                                | CUSIP: 98389B100<br>LEI: LGJNMI9GH8XIDG5RCM61 | Long             | EC               | CORP              | US        |    345300 | NS      | $25358832.00  | 5.02%             |  |  |  | No            |                  1 | On Loan: No      |
| CSX Corp                        | CSX Corp                                       | CUSIP: 126408103<br>LEI: 549300JVQR4N1MMP3Q88 | Long             | EC               | CORP              | US        |    279000 | NS      | $9915660.00   | 1.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Iberdrola SA                    | Iberdrola SA                                   | CUSIP: 000000000<br>LEI: 5QK37QC7NWOJ8D7WVQ45 | Long             | EC               | CORP              | ES        |   1073000 | NS      | $18802314.20  | 3.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Spire Inc                       | Spire Inc                                      | CUSIP: 84857L101<br>LEI: 549300NXSY15DRY2R511 | Long             | EC               | CORP              | US        |     88000 | NS      | $6553360.00   | 1.30%             |  |  |  | No            |                  1 | On Loan: No      |
| DT Midstream Inc                | DT Midstream Inc                               | CUSIP: 23345M107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     61000 | NS      | $6266530.00   | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Southern Co/The                 | Southern Co/The                                | CUSIP: 842587107<br>LEI: 549300FC3G3YU2FBZD92 | Long             | EC               | CORP              | US        |    204675 | NS      | $19337694.00  | 3.83%             |  |  |  | No            |                  1 | On Loan: No      |
| National Grid PLC               | National Grid PLC                              | CUSIP: 000000000<br>LEI: 8R95QZMKZLJX5Q2XR704 | Long             | EC               | CORP              | GB        |    818250 | NS      | $11454591.74  | 2.27%             |  |  |  | No            |                  1 | On Loan: No      |
| GEK TERNA SA                    | GEK TERNA SA                                   | CUSIP: 000000000<br>LEI: 2138003TO2MTRHWVP686 | Long             | EC               | CORP              | GR        |    191000 | NS      | $4721212.87   | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Plains All American Pipeline L  | Plains All American Pipeline LP                | CUSIP: 726503105<br>LEI: 5521FA2ITF25TVH63740 | Long             | EC               | CORP              | US        |    292000 | NS      | $5329000.00   | 1.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Northwest Natural Holding Co    | Northwest Natural Holding Co                   | CUSIP: 66765N105<br>LEI: 254900PSJL6ZEC8FR782 | Long             | EC               | CORP              | US        |    161000 | NS      | $6427120.00   | 1.27%             |  |  |  | No            |                  1 | On Loan: No      |
| SSE PLC                         | SSE PLC                                        | CUSIP: 000000000<br>LEI: 549300KI75VYLLMSK856 | Long             | EC               | CORP              | GB        |    489000 | NS      | $11937573.26  | 2.36%             |  |  |  | No            |                  1 | On Loan: No      |
| Infrastrutture Wireless Italia  | Infrastrutture Wireless Italiane SpA           | CUSIP: 000000000<br>LEI: 81560066183FE361C071 | Long             | EC               | CORP              | IT        |    550000 | NS      | $6502557.60   | 1.29%             |  |  |  | No            |                  1 | On Loan: No      |
| Kinder Morgan Inc               | Kinder Morgan Inc                              | CUSIP: 49456B101<br>LEI: 549300WR7IX8XE0TBO16 | Long             | EC               | CORP              | US        |    463000 | NS      | $12991780.00  | 2.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Aena SME SA                     | Aena SME SA                                    | CUSIP: 000000000<br>LEI: 959800R7QMXKF0NFMT29 | Long             | EC               | CORP              | ES        |    349000 | NS      | $9397388.29   | 1.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Severn Trent PLC                | Severn Trent PLC                               | CUSIP: 000000000<br>LEI: 213800RPBXRETY4A4C59 | Long             | EC               | CORP              | GB        |    195000 | NS      | $6821883.61   | 1.35%             |  |  |  | No            |                  1 | On Loan: No      |
| NextEra Energy Inc              | NextEra Energy Inc                             | CUSIP: 65339F101<br>LEI: 254900RHL9MEUS5NKX63 | Long             | EC               | CORP              | US        |    515000 | NS      | $36595900.00  | 7.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Enterprise Products Partners L  | Enterprise Products Partners LP                | CUSIP: 293792107<br>LEI: K4CDIF4M54DJZ6TB4Q48 | Long             | EC               | CORP              | US        |    127000 | NS      | $3935730.00   | 0.78%             |  |  |  | No            |                  1 | On Loan: No      |
| Canadian National Railway Co    | Canadian National Railway Co                   | CUSIP: 136375102<br>LEI: 3SU7BEP7TH9YEQOZCS77 | Long             | EC               | CORP              | CA        |     50000 | NS      | $4668735.57   | 0.92%             |  |  |  | No            |                  1 | On Loan: No      |
| RWE AG                          | RWE AG                                         | CUSIP: 000000000<br>LEI: 529900GB7KCA94ACC940 | Long             | EC               | CORP              | DE        |    446000 | NS      | $18277299.43  | 3.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Duke Energy Corp                | Duke Energy Corp                               | CUSIP: 26441C204<br>LEI: I1BZKREC126H0VB1BL91 | Long             | EC               | CORP              | US        |    250300 | NS      | $30446492.00  | 6.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Cheniere Energy Inc             | Cheniere Energy Inc                            | CUSIP: 16411R208<br>LEI: MIHC87W9WTYSYZWV1J40 | Long             | EC               | CORP              | US        |     49300 | NS      | $11628884.00  | 2.30%             |  |  |  | No            |                  1 | On Loan: No      |
| Ferrovial SE                    | Ferrovial SE                                   | CUSIP: 000000000<br>LEI: 72450022R2ZFL41Y6I04 | Long             | EC               | CORP              | NL        |    190000 | NS      | $9735577.20   | 1.93%             |  |  |  | No            |                  1 | On Loan: No      |
| WEC Energy Group Inc            | WEC Energy Group Inc                           | CUSIP: 92939U106<br>LEI: 549300IGLYTZUK3PVP70 | Long             | EC               | CORP              | US        |    123300 | NS      | $13449564.00  | 2.66%             |  |  |  | No            |                  1 | On Loan: No      |
| American Electric Power Co Inc  | American Electric Power Co Inc                 | CUSIP: 025537101<br>LEI: 1B4S6S7G0TW5EE83BO58 | Long             | EC               | CORP              | US        |    154000 | NS      | $17423560.00  | 3.45%             |  |  |  | No            |                  1 | On Loan: No      |
| FirstEnergy Corp                | FirstEnergy Corp                               | CUSIP: 337932107<br>LEI: 549300SVYJS666PQJH88 | Long             | EC               | CORP              | US        |    166000 | NS      | $7089860.00   | 1.40%             |  |  |  | No            |                  1 | On Loan: No      |
| CenterPoint Energy Inc          | CenterPoint Energy Inc                         | CUSIP: 15189T107<br>LEI: 21TPXMRRHFKOBHDC8J74 | Long             | EC               | CORP              | US        |    350097 | NS      | $13590765.54  | 2.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Flughafen Zurich AG             | Flughafen Zurich AG                            | CUSIP: 000000000<br>LEI: 529900PFO97GCN5SYB55 | Long             | EC               | CORP              | CH        |     17000 | NS      | $4813788.86   | 0.95%             |  |  |  | No            |                  1 | On Loan: No      |
| American Tower Corp             | American Tower Corp                            | CUSIP: 03027X100<br>LEI: 5493006ORUSIL88JOE18 | Long             | EC               | CORP              | US        |     19000 | NS      | $3959410.00   | 0.78%             |  |  |  | No            |                  1 | On Loan: No      |
| PPL Corp                        | PPL Corp                                       | CUSIP: 69351T106<br>LEI: 9N3UAJSNOUXFKQLF3V18 | Long             | EC               | CORP              | US        |    530235 | NS      | $18924087.15  | 3.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Ameren Corp                     | Ameren Corp                                    | CUSIP: 023608102<br>LEI: XRZQ5S7HYJFPHJ78L959 | Long             | EC               | CORP              | US        |    125660 | NS      | $12707995.80  | 2.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Edison International            | Edison International                           | CUSIP: 281020107<br>LEI: 549300I7ROF15MAEVP56 | Long             | EC               | CORP              | US        |    123600 | NS      | $6442032.00   | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Transurban Group                | Transurban Group                               | CUSIP: 000000000<br>LEI: 549300ZR71SUQ4VUTM79 | Long             | EC               | CORP              | AU        |    533000 | NS      | $4733798.46   | 0.94%             |  |  |  | No            |                  1 | On Loan: No      |
| PG&E Corp                       | PG&E Corp                                      | CUSIP: 69331C108<br>LEI: 8YQ2GSDWYZXO2EDN3511 | Long             | EC               | CORP              | US        |   1492000 | NS      | $20917840.00  | 4.14%             |  |  |  | No            |                  1 | On Loan: No      |
| Grupo Aeroportuario del Centro  | Grupo Aeroportuario del Centro Norte SAB de CV | CUSIP: 400501102<br>LEI: 529900HUSBARAFSXJ605 | Long             | EC               | CORP              | MX        |     23000 | NS      | $2447890.00   | 0.48%             |  |  |  | No            |                  1 | On Loan: No      |
| Canadian Pacific Kansas City L  | Canadian Pacific Kansas City Ltd               | CUSIP: 13646K108<br>LEI: N/A                  | Long             | EC               | CORP              | CA        |     86500 | NS      | $6361395.79   | 1.26%             |  |  |  | No            |                  1 | On Loan: No      |
| CBOE GLOBAL MARKETS, INC.       | CENTERPOINT ENERGY INC                         | CUSIP: 000000000<br>LEI: 529900RLNSGA90UPEH54 | N/A              | DE               | CORP              | US        |     -2500 | NC      | $0.00         | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| Sempra                          | Sempra                                         | CUSIP: 816851109<br>LEI: PBBKGKLRK5S5C0Y4T545 | Long             | EC               | CORP              | US        |    295400 | NS      | $24128272.00  | 4.78%             |  |  |  | No            |                  1 | On Loan: No      |
| MPLX LP                         | MPLX LP                                        | CUSIP: 55336V100<br>LEI: 5493000CZJ19CK4P3G36 | Long             | EC               | CORP              | US        |    331575 | NS      | $17407687.50  | 3.45%             |  |  |  | No            |                  1 | On Loan: No      |
| E.ON SE                         | E.ON SE                                        | CUSIP: 000000000<br>LEI: Q9MAIUP40P25UFBFG033 | Long             | EC               | CORP              | DE        |    515000 | NS      | $9377040.69   | 1.86%             |  |  |  | No            |                  1 | On Loan: No      |
| DTE Energy Co                   | DTE Energy Co                                  | CUSIP: 233331107<br>LEI: 549300IX8SD6XXD71I78 | Long             | EC               | CORP              | US        |    112000 | NS      | $15501920.00  | 3.07%             |  |  |  | No            |                  1 | On Loan: No      |
| Entergy Corp                    | Entergy Corp                                   | CUSIP: 29364G103<br>LEI: 4XM3TW50JULSLG8BNC79 | Long             | EC               | CORP              | US        |    220000 | NS      | $19894600.00  | 3.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Evergy Inc                      | Evergy Inc                                     | CUSIP: 30034W106<br>LEI: 549300PGTHDQY6PSUI61 | Long             | EC               | CORP              | US        |    260000 | NS      | $18408000.00  | 3.65%             |  |  |  | No            |                  1 | On Loan: No      |
| INTERCONTINENTAL EXCHANGE, INC. | NEXTERA ENERGY INC                             | CUSIP: 000000000<br>LEI: 5493000F4ZO33MV32P92 | N/A              | DE               | CORP              | US        |     -1300 | NC      | $-24700.00    | -0.00%            |  |  |  | No            |                  1 | On Loan: No      |
| AT&T Inc                        | AT&T Inc                                       | CUSIP: 00206R102<br>LEI: 549300Z40J86GGSTL398 | Long             | EC               | CORP              | US        |    495000 | NS      | $13567950.00  | 2.69%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-09-18

**Name of Applicant:** Duff & Phelps Utility and Infrastructure Fund Inc.

**Signature:** Amy Hackett

**Name of Signer:** Amy Hackett

**Title:** Vice President and Assistant Treasurer