<SEC-DOCUMENT>0001387131-23-002715-index.html : 20230302 <SEC-HEADER>0001387131-23-002715.hdr.sgml : 20230302 <ACCEPTANCE-DATETIME>20230302151631 ACCESSION NUMBER: 0001387131-23-002715 CONFORMED SUBMISSION TYPE: DEF 14A PUBLIC DOCUMENT COUNT: 4 CONFORMED PERIOD OF REPORT: 20230419 FILED AS OF DATE: 20230302 DATE AS OF CHANGE: 20230302 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Flaherty & Crumrine PREFERRED & INCOME OPPORTUNITY FUND INC CENTRAL INDEX KEY: 0000882071 IRS NUMBER: 954355600 STATE OF INCORPORATION: MD FISCAL YEAR END: 1130 FILING VALUES: FORM TYPE: DEF 14A SEC ACT: 1934 Act SEC FILE NUMBER: 811-06495 FILM NUMBER: 23698381 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>DEF 14A <SEQUENCE>1 <FILENAME>pfo-def14a_041923.htm <DESCRIPTION>DEFINITIVE PROXY STATEMENT <TEXT> Document 1 - file: pfo-def14a_041923.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>dfpfundscover041923001.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: dfpfundscover041923001.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>pfoproxycard001.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: pfoproxycard001.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>pfoproxycard002.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: pfoproxycard002.jpg
</DOCUMENT> </SEC-DOCUMENT>