# EDGAR Filing Document

**Accession Number:** 0001864290
**File Stem:** 0001752724-25-160639
**Filing Date:** 2025-6
**Character Count:** 43814
**Document Hash:** a3b89538bf0e0da2111d864aff989e7b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-160639.hdr.sgml**: 20250627

**ACCESSION NUMBER**: 0001752724-25-160639

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250430

**FILED AS OF DATE**: 20250627

**DATE AS OF CHANGE**: 20250627

**PERIOD START**: 20250430

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Pioneer Municipal High Income Opportunities Fund, Inc.
- **CENTRAL INDEX KEY:** 0001864290

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 0430

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-23699
- **FILM NUMBER:** 251082358

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

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

## 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 Municipal High Income Opportunities Fund, Inc.

- **b. Investment Company Act file number:** 811-23699

- **c. CIK number of Registrant:** 0001864290

- **d. LEI of Registrant:** 5493005BKX8X756MKL25

- **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 Municipal High Income Opportunities Fund, Inc.

- **c. LEI of Series:** 5493005BKX8X756MKL25

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

- **a. Date of fiscal year-end:** 2025-04-30

- **b. Date as of which information is reported:** 2025-04-30

**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:** $236226911.39

**Total Liabilities:** $28195528.56

**Net Assets:** $208031382.83

**Delayed Delivery Securities:** $914174.50

**Cash Not Reported:** $1752555.42

**Currency Risk Metrics (dv01):**

- 

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

- **3-Month:** 0.00000000 | **1-Year:** 0.00000000 | **5-Year:** -3315.00000000 | **10-Year:** -5001.00000000 | **30-Year:** -37751.00000000

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

- **3-Month:** -588.00000000 | **1-Year:** 0.00000000 | **5-Year:** -6576.00000000 | **10-Year:** -5206.00000000 | **30-Year:** -128904.00000000

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000000000 | 1.04%                | -1.84%               | -1.96%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $5940.60                 | $1387724.73                                |
| Month 2  | $203234.86               | $-5069407.56                               |
| Month 3  | $-241616.36              | $-4750668.64                               |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| BOARD OF TRADE OF THE CITY OF CHICAGO, INC. | US ULTRA BOND CBT                                             | CUSIP: 000000000<br>LEI: 549300EX04Q2QBFQTQ27 | N/A              | DIR              | CORP              | US        |        38 | NC      | $-3072.30     | -0.00%            |  |  |  | No            |                  1 | On Loan: No      |
| PUERTO RICO CMWLTH                          | Commonwealth of Puerto Rico                                   | CUSIP: 74514L3T2<br>LEI: 549300X44HXPLJU48U63 | Long             | DBT              | MUN               | US        |    412629 | PA      | $246545.57    | 0.12%             | 2043-11-01      | Variable      | 0.01%                 | No            |                  2 | On Loan: No      |
| CAPITAL TRUST AUTH FL EDUCTNL               | Capital Trust Authority                                       | CUSIP: 14054WAC9<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1320000 | PA      | $1282908.00   | 0.62%             | 2053-12-15      | Fixed         | 6.50%                 | No            |                  2 | On Loan: No      |
| MOBILE CNTY AL INDL DEV AUTH S              | Mobile County Industrial Development Authority                | CUSIP: 60733UAA9<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   2400000 | PA      | $2269992.00   | 1.09%             | 2054-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| MASSACHUSETTS ST DEV FIN AGY R              | Massachusetts Development Finance Agency                      | CUSIP: 57585BCW6<br>LEI: 549300UZSVMFXJK08K70 | Long             | DBT              | MUN               | US        |    730000 | PA      | $712604.10    | 0.34%             | 2044-12-01      | Fixed         | 5.50%                 | No            |                  2 | On Loan: No      |
| MASSACHUSETTS ST DEV FIN AGY R              | Massachusetts Development Finance Agency                      | CUSIP: 57585BCX4<br>LEI: 549300UZSVMFXJK08K70 | Long             | DBT              | MUN               | US        |    590000 | PA      | $569143.50    | 0.27%             | 2060-12-01      | Fixed         | 5.88%                 | No            |                  2 | On Loan: No      |
| CALIFORNIA ST MUNI FIN AUTH ED              | California Municipal Finance Authority                        | CUSIP: 130497AY6<br>LEI: 5493000UQOV6R4ZWS346 | Long             | DBT              | MUN               | US        |    750000 | PA      | $792967.50    | 0.38%             | 2064-06-15      | Fixed         | 6.38%                 | No            |                  2 | On Loan: No      |
| NEW YORK ST TRANSPRTN DEV CORP              | New York Transportation Development Corp                      | CUSIP: 650116HM1<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1500000 | PA      | $1523310.00   | 0.73%             | 2054-06-30      | Fixed         | 5.50%                 | No            |                  2 | On Loan: No      |
| AEROTROPOLIS REGL TRANPRTN AUT              | Aerotropolis Regional Transportation Authority                | CUSIP: 008051AE4<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    700000 | PA      | $702247.00    | 0.34%             | 2054-12-01      | Fixed         | 5.75%                 | No            |                  2 | On Loan: No      |
| FLORIDA ST DEV FIN CORP                     | Florida Development Finance Corp                              | CUSIP: 340618DT1<br>LEI: 549300HC854CNBLMWC48 | Long             | DBT              | MUN               | US        |   2000000 | PA      | $1996000.00   | 0.96%             | 2053-07-01      | Fixed         | 5.50%                 | No            |                  2 | On Loan: No      |
| NEW YORK CNTYS NY TOBACCO TRUS              | New York Counties Tobacco Trust IV                            | CUSIP: 62947YAD3<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1730000 | PA      | $1643932.50   | 0.79%             | 2042-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| TULSA OK MUNI ARPT TRUST TRUST              | Tulsa Airports Improvement Trust                              | CUSIP: 899661EK4<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   5900000 | PA      | $5900118.00   | 2.84%             | 2035-12-01      | Fixed         | 5.50%                 | No            |                  2 | On Loan: No      |
| ERIE CNTY NY TOBACCO ASSET SEC              | Erie Tobacco Asset Securitization Corp                        | CUSIP: 295095BB8<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   5370000 | PA      | $4675014.60   | 2.25%             | 2045-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| CAPITAL TRUST AUTH FL CHRTR SC              | Capital Trust Authority                                       | CUSIP: 14054YAD3<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    310000 | PA      | $268131.40    | 0.13%             | 2064-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| HOUSTON TX ARPT SYS REVENUE                 | City of Houston TX Airport System Revenue                     | CUSIP: 442349GA8<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   3000000 | PA      | $2687010.00   | 1.29%             | 2041-07-15      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| TREASURY BILL                               | United States Treasury Bill                                   | CUSIP: 912797PH4<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    800000 | PA      | $798876.00    | 0.38%             | 2025-05-13      | None          | 0.00%                 | No            |                  2 | On Loan: No      |
| FLORIDA ST DEV FIN CORP                     | Florida Development Finance Corp                              | CUSIP: 340618DK0<br>LEI: 549300HC854CNBLMWC48 | Long             | DBT              | MUN               | US        |   1000000 | PA      | $1035130.00   | 0.50%             | 2032-07-15      | Variable      | 12.00%                | No            |                  2 | On Loan: No      |
| GDB DEBT RECOVERY AUTH OF CMWL              | GDB Debt Recovery Authority of Puerto Rico                    | CUSIP: 36829QAA3<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   5727769 | PA      | $5470019.40   | 2.63%             | 2040-08-20      | Fixed         | 7.50%                 | No            |                  2 | On Loan: No      |
| ALLENTOWN PA NEIGHBORHOOD IMPT              | Allentown Neighborhood Improvement Zone Development Authority | CUSIP: 018444CC1<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    730000 | PA      | $715341.60    | 0.34%             | 2042-05-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| DOMINION WTR & SANTN DIST CO R              | Dominion Water & Sanitation District                          | CUSIP: 25755AAE1<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   2000000 | PA      | $1924100.00   | 0.92%             | 2052-12-01      | Fixed         | 5.88%                 | No            |                  2 | On Loan: No      |
| BUCKEYE OH TOBACCO SETTLEMENT               | Buckeye Tobacco Settlement Financing Authority                | CUSIP: 118217CZ9<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |  13000000 | PA      | $11328330.00  | 5.45%             | 2055-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| NEW YORK CNTYS NY TOBACCO TRUS              | New York Counties Tobacco Trust IV                            | CUSIP: 62947YAE1<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   7915000 | PA      | $7415326.05   | 3.56%             | 2045-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| CO HIGH PERFORMANCE TRANSPRTN               | Colorado High Performance Transportation Enterprise           | CUSIP: 19648DAD1<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   3000000 | PA      | $2912100.00   | 1.40%             | 2056-12-31      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| AEROTROPOLIS REGL TRANPRTN AUT              | Aerotropolis Regional Transportation Authority                | CUSIP: 008051AB0<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   5180000 | PA      | $4600306.20   | 2.21%             | 2041-12-01      | Fixed         | 4.25%                 | No            |                  2 | On Loan: No      |
| PUERTO RICO CMWLTH                          | Commonwealth of Puerto Rico                                   | CUSIP: 74514L3N5<br>LEI: 549300X44HXPLJU48U63 | Long             | DBT              | MUN               | US        |   1796000 | PA      | $1505766.40   | 0.72%             | 2041-07-01      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| NORTH CAROLINA ST MED CARE COM              | North Carolina Medical Care Commission                        | CUSIP: 65820YTN6<br>LEI: 549300FH6KOXGCHQYG81 | Long             | DBT              | MUN               | US        |    180000 | PA      | $185191.20    | 0.09%             | 2044-09-01      | Fixed         | 5.50%                 | No            |                  2 | On Loan: No      |
| CALIFORNIA ST SCH FIN AUTH CHR              | California School Finance Authority                           | CUSIP: 13058TUL2<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    700000 | PA      | $639674.00    | 0.31%             | 2059-06-01      | Fixed         | 5.12%                 | No            |                  2 | On Loan: No      |
| STAMFORD CT HSG AUTH                        | Stamford Housing Authority                                    | CUSIP: 852640AK7<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    360000 | PA      | $367106.40    | 0.18%             | 2055-10-01      | Fixed         | 6.50%                 | No            |                  2 | On Loan: No      |
| ALLENTOWN COMMERCIAL & INDL DE              | Allentown Commercial and Industrial Development Authority     | CUSIP: 01843AAD8<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1600000 | PA      | $1641248.00   | 0.79%             | 2053-06-15      | Fixed         | 6.00%                 | No            |                  2 | On Loan: No      |
| CAPITAL TRUST AUTH FL CHRTR SC              | Capital Trust Authority                                       | CUSIP: 14054YAC5<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    340000 | PA      | $305180.60    | 0.15%             | 2054-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| PUBLIC FIN AUTH WI REVENUE                  | Public Finance Authority                                      | CUSIP: 74442PF75<br>LEI: 5493004S6D3NA627K012 | Long             | DBT              | MUN               | US        |   1800000 | PA      | $1863648.00   | 0.90%             | 2054-07-01      | Fixed         | 5.75%                 | No            |                  2 | On Loan: No      |
| CAPITAL TRUST AUTH FL EDUCTNL               | Capital Trust Authority                                       | CUSIP: 14054WAA3<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1335000 | PA      | $1287020.10   | 0.62%             | 2033-12-15      | Fixed         | 5.50%                 | No            |                  2 | On Loan: No      |
| ARLINGTON TX HGR EDU FIN CORP               | Arlington Higher Education Finance Corp                       | CUSIP: 041807HA9<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    300000 | PA      | $270291.00    | 0.13%             | 2054-08-15      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| CAPITAL PROJS FL FIN AUTH STUD              | Capital Projects Finance Authority/FL                         | CUSIP: 140427CM5<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1200000 | PA      | $1256904.00   | 0.60%             | 2039-06-01      | Fixed         | 5.25%                 | No            |                  2 | On Loan: No      |
| MARION IL SALES TAX REVENUE                 | City of Marion IL Sales Tax Revenue                           | CUSIP: 569498AB4<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1000000 | PA      | $1007860.00   | 0.48%             | 2055-06-01      | Fixed         | 6.62%                 | No            |                  2 | On Loan: No      |
| CHAUTAUQUA NY TOBACCO ASSET SE              | Chautauqua Tobacco Asset Securitization Corp                  | CUSIP: 162564BB3<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   5300000 | PA      | $5300636.00   | 2.55%             | 2048-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| NASSAU CNTY NY TOBACCO SETTLEM              | Nassau County Tobacco Settlement Corp                         | CUSIP: 63166MCA5<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   3505000 | PA      | $3310612.70   | 1.59%             | 2035-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| PORT BEAUMONT TX NAV DIST DOCK              | Port of Beaumont Navigation District                          | CUSIP: 73360CAQ7<br>LEI: 549300G8PKBXALUKJY33 | Long             | DBT              | MUN               | US        |    450000 | PA      | $432976.50    | 0.21%             | 2044-01-01      | Fixed         | 5.12%                 | No            |                  2 | On Loan: No      |
| SUFFOLK REGL OFF-TRACK BETTING              | Suffolk Regional Off-Track Betting Co                         | CUSIP: 86480TAC8<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    900000 | PA      | $917100.00    | 0.44%             | 2053-12-01      | Fixed         | 6.00%                 | No            |                  2 | On Loan: No      |
| NEW YORK ST TRANSPRTN DEV CORP              | New York Transportation Development Corp                      | CUSIP: 650116HW9<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   2380000 | PA      | $2402610.00   | 1.15%             | 2060-12-31      | Fixed         | 5.50%                 | No            |                  2 | On Loan: No      |
| TOBACCO SETTLEMENT FING CORP V              | Tobacco Settlement Financing Corp/VA                          | CUSIP: 88880NAT6<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   3000000 | PA      | $2413050.00   | 1.16%             | 2046-06-01      | Fixed         | 6.71%                 | No            |                  2 | On Loan: No      |
| STAMFORD CT HSG AUTH                        | Stamford Housing Authority                                    | CUSIP: 852640AJ0<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    200000 | PA      | $201808.00    | 0.10%             | 2045-10-01      | Fixed         | 6.38%                 | No            |                  2 | On Loan: No      |
| CALIFORNIA STWD CMNTYS DEV AUT              | California Statewide Communities Development Authority        | CUSIP: 13080SML5<br>LEI: 549300KTNI2GCJNX2U48 | Long             | DBT              | MUN               | US        |   2315000 | PA      | $2307522.55   | 1.11%             | 2056-12-01      | Fixed         | 5.25%                 | No            |                  2 | On Loan: No      |
| PUERTO RICO CMWLTH                          | Commonwealth of Puerto Rico                                   | CUSIP: 74514L3M7<br>LEI: 549300X44HXPLJU48U63 | Long             | DBT              | MUN               | US        |   7673960 | PA      | $6993816.93   | 3.36%             | 2037-07-01      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| WESTCHESTER CNTY NY LOCAL DEV               | Westchester County Local Development Corp                     | CUSIP: 95737TEV4<br>LEI: 549300KOSU8OC75V9238 | Long             | DBT              | MUN               | US        |   4160000 | PA      | $3721328.00   | 1.79%             | 2056-07-01      | Fixed         | 4.50%                 | No            |                  2 | On Loan: No      |
| PUBLIC FIN AUTH WI EDUCTNL FAC              | Public Finance Authority                                      | CUSIP: 74443DLD1<br>LEI: 5493004S6D3NA627K012 | Long             | DBT              | MUN               | US        |    250000 | PA      | $237840.00    | 0.11%             | 2054-06-15      | Fixed         | 5.88%                 | No            |                  2 | On Loan: No      |
| FLORIDA ST DEV FIN CORP                     | Florida Development Finance Corp                              | CUSIP: 34062AAD3<br>LEI: 549300HC854CNBLMWC48 | Long             | DBT              | MUN               | US        |    400000 | PA      | $386940.00    | 0.19%             | 2054-06-01      | Fixed         | 5.25%                 | No            |                  2 | On Loan: No      |
| ALLENTOWN COMMERCIAL & INDL DE              | Allentown Commercial and Industrial Development Authority     | CUSIP: 01843AAC0<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    600000 | PA      | $621528.00    | 0.30%             | 2043-06-15      | Fixed         | 5.75%                 | No            |                  2 | On Loan: No      |
| TOBACCO SETTLEMENT FING CORP N              | Tobacco Settlement Financing Corp                             | CUSIP: 888808HT2<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1745000 | PA      | $1686856.60   | 0.81%             | 2046-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| MIDA MOUNTAIN VLG PUBLIC INFRA              | Mida Mountain Village Public Infrastructure District          | CUSIP: 59561UAD2<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    500000 | PA      | $487110.00    | 0.23%             | 2054-06-15      | Fixed         | 6.00%                 | No            |                  2 | On Loan: No      |
| PUERTO RICO CMWLTH INDL DEV CO              | Puerto Rico Industrial Development Co                         | CUSIP: 745211LM2<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1300000 | PA      | $1250912.00   | 0.60%             | 2054-01-01      | Variable      | 7.00%                 | No            |                  2 | On Loan: No      |
| NASSAU CNTY NY TOBACCO SETTLEM              | Nassau County Tobacco Settlement Corp                         | CUSIP: 63166MCB3<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   2895000 | PA      | $2602662.90   | 1.25%             | 2046-06-01      | Fixed         | 5.12%                 | No            |                  2 | On Loan: No      |
| DELAWARE ST ECON DEV AUTH CHRT              | Delaware State Economic Development Authority                 | CUSIP: 246372BD7<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1015000 | PA      | $750359.05    | 0.36%             | 2057-06-01      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| CHICAGO IL BRD OF EDU                       | Chicago Board of Education                                    | CUSIP: 167505PL4<br>LEI: 54930099NR6T9V7LVB43 | Long             | DBT              | MUN               | US        |   2260000 | PA      | $2148491.60   | 1.03%             | 2042-12-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| CALIFORNIA ST INFRASTRUCTURE &              | California Infrastructure & Economic Development Bank         | CUSIP: 13034A6B1<br>LEI: 549300C1OG9RDIM8ET06 | Long             | DBT              | MUN               | US        |   4700000 | PA      | $4529860.00   | 2.18%             | 2065-01-01      | Variable      | 9.50%                 | No            |                  2 | On Loan: No      |
| TOBACCO SETTLEMENT FIN AUTH WV              | Tobacco Settlement Finance Authority                          | CUSIP: 88880LAU7<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |  15000000 | PA      | $11341950.00  | 5.45%             | 2049-06-01      | Fixed         | 4.31%                 | No            |                  2 | On Loan: No      |
| MET PIER & EXPOSITION AUTH IL               | Metropolitan Pier & Exposition Authority                      | CUSIP: 592250DN1<br>LEI: 254900I3VDCQ58UGBR15 | Long             | DBT              | MUN               | US        |   9500000 | PA      | $7829995.00   | 3.76%             | 2050-06-15      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| NORTH CAROLINA ST MED CARE COM              | North Carolina Medical Care Commission                        | CUSIP: 65820YTP1<br>LEI: 549300FH6KOXGCHQYG81 | Long             | DBT              | MUN               | US        |    215000 | PA      | $216029.85    | 0.10%             | 2054-09-01      | Fixed         | 5.50%                 | No            |                  2 | On Loan: No      |
| PUERTO RICO CMWLTH                          | Commonwealth of Puerto Rico                                   | CUSIP: 74514L3P0<br>LEI: 549300X44HXPLJU48U63 | Long             | DBT              | MUN               | US        |   3624000 | PA      | $2853900.00   | 1.37%             | 2046-07-01      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| MIDAS MOUNTAIN VETERANS PROGRA              | MIDA Mountain Veterans Program Public Infrastructure District | CUSIP: 59561SAA3<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    500000 | PA      | $477130.00    | 0.23%             | 2044-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| ARKANSAS DEV FIN AUTH ENVIRONM              | Arkansas Development Finance Authority                        | CUSIP: 04110FAA3<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1750000 | PA      | $1769932.50   | 0.85%             | 2052-09-01      | Fixed         | 5.45%                 | No            |                  2 | On Loan: No      |
| FLORIDA ST DEV FIN CORP SENIOR              | Florida Development Finance Corp                              | CUSIP: 34061WAY0<br>LEI: 549300HC854CNBLMWC48 | Long             | DBT              | MUN               | US        |   4425000 | PA      | $4208130.75   | 2.02%             | 2051-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| CHINO CA CMNTY FACS DIST SPL T              | Chino Community Facilities District                           | CUSIP: 169511XX5<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    740000 | PA      | $748702.40    | 0.36%             | 2054-09-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| MIAMI-DADE CNTY FL INDL DEV AU              | Miami-Dade County Industrial Development Authority            | CUSIP: 59334GAM9<br>LEI: 549300RM19LZY32DAU30 | Long             | DBT              | MUN               | US        |    525000 | PA      | $494298.00    | 0.24%             | 2052-07-01      | Fixed         | 5.25%                 | No            |                  2 | On Loan: No      |
| PUBLIC FIN AUTH WI REVENUE                  | Public Finance Authority                                      | CUSIP: 74442PTK1<br>LEI: 5493004S6D3NA627K012 | Long             | DBT              | MUN               | US        |   8000000 | PA      | $7135680.00   | 3.43%             | 2041-06-01      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| VALPARAISO IN EXEMPT FACS REVE              | City of Valparaiso IN                                         | CUSIP: 92028RAF2<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1250000 | PA      | $1226462.50   | 0.59%             | 2054-01-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| ROCHESTER MN                                | City of Rochester MN                                          | CUSIP: 77158CAB7<br>LEI: 549300006EX3INSHXA95 | Long             | DBT              | MUN               | US        |   1430000 | PA      | $1294335.90   | 0.62%             | 2038-09-01      | Fixed         | 5.12%                 | No            |                  2 | On Loan: No      |
| ARIZONA ST INDL DEV AUTH EDU R              | Arizona Industrial Development Authority                      | CUSIP: 04052BHZ0<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1675000 | PA      | $1565488.50   | 0.75%             | 2049-07-15      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| AEROTROPOLIS REGL TRANPRTN AUT              | Aerotropolis Regional Transportation Authority                | CUSIP: 008051AA2<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   2575000 | PA      | $2384347.00   | 1.15%             | 2051-12-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| STAMFORD CT HSG AUTH                        | Stamford Housing Authority                                    | CUSIP: 852640AL5<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    250000 | PA      | $250472.50    | 0.12%             | 2060-10-01      | Fixed         | 6.25%                 | No            |                  2 | On Loan: No      |
| RENO NV SPL ASSMNT                          | City of Reno NV                                               | CUSIP: 759865CE6<br>LEI: 549300M4R5WWSUWY8D52 | Long             | DBT              | MUN               | US        |    500000 | PA      | $480280.00    | 0.23%             | 2047-06-01      | Fixed         | 5.12%                 | No            |                  2 | On Loan: No      |
| GREATER TEXAS CULTURAL EDU FAC              | Greater Texas Cultural Education Facilities Finance Corp      | CUSIP: 39237QBU8<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   2200000 | PA      | $2294358.00   | 1.10%             | 2054-06-01      | Fixed         | 5.25%                 | No            |                  2 | On Loan: No      |
| GRAPEVINE WASH LOCAL DIST UT                | Grapevine Wash Local District                                 | CUSIP: 38860EAA6<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    800000 | PA      | $741592.00    | 0.36%             | 2055-03-01      | Fixed         | 6.00%                 | No            |                  2 | On Loan: No      |
| CALIFORNIA ST SCH FIN AUTH CHR              | California School Finance Authority                           | CUSIP: 13058TUK4<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    250000 | PA      | $227452.50    | 0.11%             | 2054-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| NEW YORK ST TRANSPRTN DEV CORP              | New York Transportation Development Corp                      | CUSIP: 650116HA7<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   3000000 | PA      | $3004680.00   | 1.44%             | 2060-06-30      | Fixed         | 5.38%                 | No            |                  2 | On Loan: No      |
| INDIANA ST FIN AUTH REVENUE                 | Indiana Finance Authority                                     | CUSIP: 45506DF91<br>LEI: 549300PS0PAS7NDSSI20 | Long             | DBT              | MUN               | US        |   2500000 | PA      | $2385050.00   | 1.15%             | 2047-07-01      | Fixed         | 5.38%                 | No            |                  2 | On Loan: No      |
| MARICOPA CNTY INDL DEV AUTH EX              | Maricopa County Industrial Development Authority              | CUSIP: 56678TAA7<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   4000000 | PA      | $3368520.00   | 1.62%             | 2047-10-15      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| PRAIRIE CENTER CO MET DIST #3               | Prairie Center Metropolitan District No 3                     | CUSIP: 739476AE9<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   3475000 | PA      | $3303752.00   | 1.59%             | 2041-12-15      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| ARIZONA ST INDL DEV AUTH EDU R              | Arizona Industrial Development Authority                      | CUSIP: 04052BPS7<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1000000 | PA      | $788880.00    | 0.38%             | 2051-07-15      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| PHILADELPHIA PA AUTH FOR INDL               | Philadelphia Authority for Industrial Development             | CUSIP: 71780CBG4<br>LEI: 549300DIY68KQZEW7M79 | Long             | DBT              | MUN               | US        |    750000 | PA      | $652522.50    | 0.31%             | 2041-06-01      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| MIDA MOUNTAIN VLG PUBLIC INFRA              | Mida Mountain Village Public Infrastructure District          | CUSIP: 59561UAA8<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    400000 | PA      | $388064.00    | 0.19%             | 2054-06-15      | Fixed         | 5.12%                 | No            |                  2 | On Loan: No      |
| PUERTO RICO SALES TAX FING COR              | Puerto Rico Sales Tax Financing Corp Sales Tax Revenue        | CUSIP: 74529JPX7<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   6844000 | PA      | $6493724.08   | 3.12%             | 2058-07-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| ARKANSAS ST DEV FIN AUTH INDL               | Arkansas Development Finance Authority                        | CUSIP: 04108WCC4<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   9500000 | PA      | $8449585.00   | 4.06%             | 2049-09-01      | Fixed         | 4.50%                 | No            |                  2 | On Loan: No      |
| PUBLIC FIN AUTH WI STUDENT HSG              | Public Finance Authority                                      | CUSIP: 74439YGF2<br>LEI: 5493004S6D3NA627K012 | Long             | DBT              | MUN               | US        |    325000 | PA      | $321938.50    | 0.15%             | 2045-06-01      | Fixed         | 5.25%                 | No            |                  2 | On Loan: No      |
| PUBLIC FIN AUTH WI CHRT SCH RE              | Public Finance Authority                                      | CUSIP: 744396FF4<br>LEI: 5493004S6D3NA627K012 | Long             | DBT              | MUN               | US        |   1115000 | PA      | $1068114.25   | 0.51%             | 2039-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| TSASC INC NY                                | TSASC Inc/NY                                                  | CUSIP: 898526FR4<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   5715000 | PA      | $4963820.40   | 2.39%             | 2048-06-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| ALLENTOWN PA NEIGHBORHOOD IMPT              | Allentown Neighborhood Improvement Zone Development Authority | CUSIP: 018444CF4<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1100000 | PA      | $1114487.00   | 0.54%             | 2042-05-01      | Fixed         | 6.00%                 | No            |                  2 | On Loan: No      |
| IOWA ST FIN AUTH MIDWSTRN DISA              | Iowa Finance Authority                                        | CUSIP: 46246SAE5<br>LEI: 549300NQVL49BTHOW391 | Long             | DBT              | MUN               | US        |   6600000 | PA      | $6283068.00   | 3.02%             | 2042-08-01      | Fixed         | 4.75%                 | No            |                  2 | On Loan: No      |
| AEROTROPOLIS REGL TRANPRTN AUT              | Aerotropolis Regional Transportation Authority                | CUSIP: 008051AC8<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   3500000 | PA      | $2969540.00   | 1.43%             | 2052-12-01      | Fixed         | 4.38%                 | No            |                  2 | On Loan: No      |
| BROOKLYN PK MN CHRT SCH LEASE               | City of Brooklyn Park MN                                      | CUSIP: 114224AR9<br>LEI: 549300SRSB2KMQNYBB75 | Long             | DBT              | MUN               | US        |    600000 | PA      | $543780.00    | 0.26%             | 2064-06-15      | Fixed         | 5.25%                 | No            |                  2 | On Loan: No      |
| PUERTO RICO CMWLTH AQUEDUCT &               | Puerto Rico Commonwealth Aqueduct & Sewer Authority           | CUSIP: 745160SJ1<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   2500000 | PA      | $2337600.00   | 1.12%             | 2047-07-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| PHILADELPHIA PA AUTH FOR INDL               | Philadelphia Authority for Industrial Development             | CUSIP: 71780CAF7<br>LEI: 549300DIY68KQZEW7M79 | Long             | DBT              | MUN               | US        |   2500000 | PA      | $2289050.00   | 1.10%             | 2044-12-15      | Floating      | 5.12%                 | No            |                  2 | On Loan: No      |
| DIST OF COLUMBIA TAX INCR REVE              | District of Columbia                                          | CUSIP: 254840EC1<br>LEI: 549300HWFOZXPKGOX654 | Long             | DBT              | MUN               | US        |    500000 | PA      | $483225.00    | 0.23%             | 2034-06-01      | Fixed         | 5.12%                 | No            |                  2 | On Loan: No      |
| STERLING RANCH CMNTY AUTH BRD               | Sterling Ranch Community Authority Board                      | CUSIP: 85950NAY6<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    500000 | PA      | $485825.00    | 0.23%             | 2054-12-01      | Fixed         | 5.75%                 | No            |                  2 | On Loan: No      |
| ARIZONA ST INDL DEV AUTH EDU R              | Arizona Industrial Development Authority                      | CUSIP: 04052BPT5<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    950000 | PA      | $716585.00    | 0.34%             | 2056-07-15      | Fixed         | 4.00%                 | No            |                  2 | On Loan: No      |
| WESTCHESTER CNTY NY LOCAL DEV               | Westchester County Local Development Corp                     | CUSIP: 95737TEU6<br>LEI: 549300KOSU8OC75V9238 | Long             | DBT              | MUN               | US        |   9615000 | PA      | $9456544.80   | 4.55%             | 2056-07-01      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| PINERY CO COML MET DIST #2 SPL              | Pinery Commercial Metropolitan District No 2                  | CUSIP: 72330FAA4<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    500000 | PA      | $480545.00    | 0.23%             | 2054-12-01      | Fixed         | 5.75%                 | No            |                  2 | On Loan: No      |
| PUBLIC FIN AUTH WI STUDENT HSG              | Public Finance Authority                                      | CUSIP: 74439YGG0<br>LEI: 5493004S6D3NA627K012 | Long             | DBT              | MUN               | US        |    600000 | PA      | $602502.00    | 0.29%             | 2055-06-01      | Fixed         | 5.50%                 | No            |                  2 | On Loan: No      |
| NEW YORK ST TRANSPRTN DEV CORP              | New York Transportation Development Corp                      | CUSIP: 650116AV8<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   5000000 | PA      | $4881750.00   | 2.35%             | 2050-01-01      | Fixed         | 5.25%                 | No            |                  2 | On Loan: No      |

### Signature

**Date Signed:** 2025-06-26

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

**Signature:** Carol Trevino

**Name of Signer:** Carol Trevino

**Title:** Treasurer