<SEC-DOCUMENT>0001999371-25-004307-index.html : 20250416
<SEC-HEADER>0001999371-25-004307.hdr.sgml : 20250416
<ACCEPTANCE-DATETIME>20250416150236
ACCESSION NUMBER:		0001999371-25-004307
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20250416
DATE AS OF CHANGE:		20250416

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Flaherty & Crumrine PREFERRED & INCOME OPPORTUNITY FUND INC
		CENTRAL INDEX KEY:			0000882071
		ORGANIZATION NAME:           	
		EIN:				954355600
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-06495
		FILM NUMBER:		25842291

	BUSINESS ADDRESS:	
		STREET 1:		301 E COLORADO BLVD STE 720
		STREET 2:		C/O FLAHERTY & CRUMRINE INC
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101
		BUSINESS PHONE:		(626) 795-7300

	MAIL ADDRESS:	
		STREET 1:		301 COLORADO BLVD STE 800
		STREET 2:		C/O FLAHERTY & CRUMRINE INC
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Flaherty & Crumrine PREFERRED INCOME OPPORTUNITY FUND INC
		DATE OF NAME CHANGE:	20050708

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PREFERRED INCOME OPPORTUNITY FUND INC
		DATE OF NAME CHANGE:	19920929
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>pfo-defa14a_042525.htm
<DESCRIPTION>ADDITIONAL DEFINITIVE PROXY SOLICITING MATERIALS
<TEXT>
Document 1 - file: pfo-defa14a_042525.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>logo_001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: logo_001.jpg

</DOCUMENT>
</SEC-DOCUMENT>