NPORT-P false 0001864290 XXXXXXXX Pioneer Municipal High Income Opportunities Fund, Inc. 811-23699 0001864290 5493005BKX8X756MKL25 60 State Street Boston 02109 617-422-4947 Pioneer Municipal High Income Opportunities Fund, Inc. 5493005BKX8X756MKL25 2026-04-30 2026-01-30 N 3142692.74 110403.01 3032289.73 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1973488.23000000 USD N ROCHESTER MN 549300006EX3INSHXA95 77158CAB7 1430000.00000000 PA USD 1139334.25000000 37.57339672155 Long DBT MUN US N 3 2038-09-01 Fixed 5.12500000 N N N N N N 2026-04-01 Pioneer Municipal High Income Opportunities Fund, Inc. Carol Trevino Carol Trevino Treasurer XXXX