Pioneer Municipal High Income Opportunities Fund, Inc.
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MIO CIK: 0001864290

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Form	Description	Owner/Filer	Filing Agent	Date	Actions
N-8F	Application for deregistration made on F...	Pioneer Municipal High Income Opportunities Fund, Inc.	DONNELLEY FINANCIAL SOLUTIONS /FA/	07/30/2026	View ... Create Alert Filing info Download PDF Copy Link
N-CEN	Annual Report for Registered Investment ...		BNY MELLON INVESTMENT SERVICING (US) INC. /fa	07/07/2026	View ... Create Alert Filing info Download PDF Copy Link
NPORT-P	Monthly Portfolio Investments Report on ...		BNY MELLON INVESTMENT SERVICING (US) INC. /fa	04/01/2026	View ... Create Alert Filing info Download PDF Copy Link
N-CSRS	Certified semi-annual shareholder report...	Pioneer Municipal High Income Opportunities Fund, Inc.	DONNELLEY FINANCIAL SOLUTIONS /FA/	01/06/2026	View ... Create Alert Filing info Download PDF Copy Link View XBRL Download CSV
NPORT-P	Monthly Portfolio Investments Report on ...		BNY MELLON INVESTMENT SERVICING (US) INC. /fa	12/19/2025	View ... Create Alert Filing info Download PDF Copy Link
NPORT-P	Monthly Portfolio Investments Report on ...		BNY MELLON INVESTMENT SERVICING (US) INC. /fa	09/26/2025	View ... Create Alert Filing info Download PDF Copy Link
4	Statement of changes in beneficial owner...		Pioneer Municipal High Income Opportunities Fund, Inc.	09/02/2025	View ... Create Alert Filing info Download PDF Copy Link
SCHEDULE 13D/A			Newsfile Corp /fa	09/02/2025	View ... Create Alert Filing info Download PDF Copy Link
25-NSE	Notification filed by national security ...		NEW YORK STOCK EXCHANGE LLC /fa	08/27/2025	View ... Create Alert Filing info Download PDF Copy Link
N-PX	Annual Report of Proxy Voting Record of ...		Pioneer Municipal High Income Opportunities Fund, Inc. /fa	08/27/2025	View ... Create Alert Filing info Download PDF Copy Link
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