# EDGAR Filing Document

**Accession Number:** 0001166258
**File Stem:** 0000940400-26-022025
**Filing Date:** 2026-5
**Character Count:** 9481
**Document Hash:** 31fd85bcba98826471e92a5c5004d146
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000940400-26-022025.hdr.sgml**: 20260528

**ACCESSION NUMBER**: 0000940400-26-022025

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260331

**FILED AS OF DATE**: 20260528

**DATE AS OF CHANGE**: 20260528

**PERIOD START**: 20260331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PIONEER HIGH INCOME FUND, INC.
- **CENTRAL INDEX KEY:** 0001166258

**ORGANIZATION NAME:**
- **EIN:** 020563892
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-21043
- **FILM NUMBER:** 261036693

**BUSINESS ADDRESS:**
- **STREET 1:** 60 STATE ST.
- **STREET 2:** 5TH FL.
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109
- **BUSINESS PHONE:** 617-742-7825

**MAIL ADDRESS:**
- **STREET 1:** 60 STATE ST
- **STREET 2:** 5TH FL
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PIONEER HIGH INCOME TRUST
- **DATE OF NAME CHANGE:** 20020129

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** Pioneer High Income Fund, Inc.

- **b. Investment Company Act file number:** 811-21043

- **c. CIK number of Registrant:** 0001166258

- **d. LEI of Registrant:** 5493001GCNPC0XWPCF03

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

  - **Street Address 1:** 60 State Street

  - **City:** Boston

  - **State:** MA

  - **Foreign country:** US

  - **Zip / Postal Code:** 02109

  - **Telephone number:** 617-422-4947

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

- **a. Name of Series:** Pioneer High Income Fund, Inc.

- **c. LEI of Series:** 5493001GCNPC0XWPCF03

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

- **a. Date of fiscal year-end:** 2026-03-31

- **b. Date as of which information is reported:** 2026-03-31

**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:** $2346546.31

**Total Liabilities:** $63268.49

**Net Assets:** $2283277.82

**Cash Not Reported:** $9104.88

**Currency Risk Metrics (dv01):**

- 

**Credit Spread Risk - Investment Grade (dv01):**

- **3-Month:** 0.00000000 | **1-Year:** 0.00000000 | **5-Year:** 0.00000000 | **10-Year:** 0.00000000 | **30-Year:** 0.00000000

**Credit Spread Risk - Non-Investment Grade (dv01):**

- **3-Month:** 0.00000000 | **1-Year:** 0.00000000 | **5-Year:** 0.00000000 | **10-Year:** 0.00000000 | **30-Year:** 0.00000000

**Monthly Return Information**

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

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $1014.20                 | $-45844.40                                 |
| Month 2  | $-1228691.94             | $1032414.67                                |
| Month 3  | $58986.01                | $-755168.07                                |

**Designated Index Information**

- **Index Name:** ICE BofA US High Yield

- **Index Identifier:** N/A

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| THOPAS RE 2025                           | THOPAS RE 2025                                                | CUSIP: 000000000<br>LEI: N/A                  | Long             | DBT              | CORP              | BM        |    1000000 | PA      | $50772.61     | 2.22%             | 2030-12-31      | None          | 0.00%                 | Yes           |                  3 | On Loan: No      |
| TRICIDA INC                              | TRICIDA INC                                                   | CUSIP: 000000000<br>LEI: N/A                  | Long             | DBT              | CORP              | US        |    1300000 | PA      | $0.01         | 0.00%             | 2027-05-15      | Fixed         | 0.00%                 | No            |                  3 | On Loan: No      |
| PETROQUEST ENERGY INC                    | PETROQUEST ENERGY INC                                         | CUSIP: 716748504<br>LEI: N/A                  | Long             | EC               | CORP              | US        |       8027 | NS      | $1043.51      | 0.05%             |  |  |  | No            |                  2 | On Loan: No      |
| TRICIDA INC                              | TRICIDA INC                                                   | CUSIP: 000000000<br>LEI: N/A                  | Long             | DBT              | CORP              | US        |    1300000 | PA      | $0.01         | 0.00%             | 2027-05-15      | Fixed         | 0.00%                 | No            |                  3 | On Loan: No      |
| Atento Luxco 1 SA                        | Atento Luxco 1 SA                                             | CUSIP: 000000000<br>LEI: 549300MLFF3HYCZQTC48 | Long             | EC               | CORP              | LU        |     251944 | NS      | $0.03         | 0.00%             |  |  |  | No            |                  3 | On Loan: No      |
| Dreyfus Government Cash Management Funds | Dreyfus Government Cash Management Funds SH BEN INT           | CUSIP: 262006208<br>LEI: 5493000Q69I5Q3QZIA91 | Long             | STIV             | RF                | US        |    2197691 | NS      | $2197691.01   | 96.25%            |  |  |  | No            |                  1 | On Loan: No      |
| THOPAS RE 2023                           | THOPAS RE 2023                                                | CUSIP: 000000000<br>LEI: N/A                  | Long             | DBT              | CORP              | BM        |    1596147 | PA      | $0.00         | 0.00%             | 2028-12-31      | None          | 0.00%                 | Yes           |                  3 | On Loan: No      |
| Credito Real S.A.B. de C.V. Escrow       | Credito Real S.A.B. de C.V. Escrow 8% SNR PERP NTS USD (144A) | CUSIP: 225ESCAC6<br>LEI: N/A                  | Long             | DBT              | CORP              | MX        |     140000 | PA      | $14.00        | 0.00%             | 2028-01-21      | Fixed         | 8.00%                 | No            |                  2 | On Loan: No      |
| Gleneagles Re 2022                       | Gleneagles Re 2022                                            | CUSIP: 000000000<br>LEI: N/A                  | Long             | DBT              | CORP              | BM        |     750000 | PA      | $26550.00     | 1.16%             | 2027-12-31      | None          | 0.00%                 | Yes           |                  3 | On Loan: No      |
| PT Bakrie & Brothers TBK                 | PT Bakrie & Brothers TBK                                      | CUSIP: 000000000<br>LEI: N/A                  | Long             | DBT              | CORP              | ID        | 1422679000 | PA      | $0.01         | 0.00%             | 2026-06-30      | None          | 0.00%                 | No            |                  3 | On Loan: No      |
| Alturas Re 2022-2, 12/31/2027            | Alturas Re 2022-2, 12/31/2027                                 | CUSIP: 000000000<br>LEI: N/A                  | Long             | DBT              | CORP              | BM        |      40466 | PA      | $0.00         | 0.00%             | 2027-12-31      | None          | 0.00%                 | Yes           |                  3 | On Loan: No      |
| THOPAS RE 2024                           | THOPAS RE 2024                                                | CUSIP: 000000000<br>LEI: N/A                  | Long             | DBT              | CORP              | BM        |    1596147 | PA      | $7394.07      | 0.32%             | 2029-12-31      | None          | 0.00%                 | Yes           |                  3 | On Loan: No      |
| Russian Federation                       | RUSSIA 7.5 03/31/30 REGS                                      | CUSIP: 000000000<br>LEI: 5493004EHVGF71PDBU58 | Long             | DBT              | NUSS              | RU        |     382800 | PA      | $0.00         | 0.00%             | 2030-03-31      | Variable      | 7.50%                 | Yes           |                  3 | On Loan: No      |
| Thopas Re 2022                           | Thopas Re 2022                                                | CUSIP: 000000000<br>LEI: N/A                  | Long             | DBT              | CORP              | BM        |    1500000 | PA      | $7613.16      | 0.33%             | 2027-12-31      | None          | 0.00%                 | Yes           |                  3 | On Loan: No      |

### Signature

**Date Signed:** 2026-05-28

**Name of Applicant:** Pioneer High Income Fund, Inc.

**Signature:** Carol Trevino

**Name of Signer:** Carol Trevino

**Title:** Treasurer