<SEC-DOCUMENT>0001193125-16-562954-index.html : 20160428 <SEC-HEADER>0001193125-16-562954.hdr.sgml : 20160428 <ACCEPTANCE-DATETIME>20160428142218 ACCESSION NUMBER: 0001193125-16-562954 CONFORMED SUBMISSION TYPE: N-30B-2 PUBLIC DOCUMENT COUNT: 3 CONFORMED PERIOD OF REPORT: 20160229 FILED AS OF DATE: 20160428 DATE AS OF CHANGE: 20160428 EFFECTIVENESS DATE: 20160428 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: N-30B-2 SEC ACT: 1940 Act SEC FILE NUMBER: 811-06495 FILM NUMBER: 161599112 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 720 STREET 2: C/O FLAHERTY & CRUMRINE INC CITY: PASADENA STATE: CA ZIP: 91101 FORMER COMPANY: FORMER CONFORMED NAME: PREFERRED INCOME OPPORTUNITY FUND INC DATE OF NAME CHANGE: 19920929 </SEC-HEADER> <DOCUMENT> <TYPE>N-30B-2 <SEQUENCE>1 <FILENAME>d124381dn30b2.htm <DESCRIPTION>FLAHERTY & CRUMRINE PREFERRED INCOME OPPORTUNITY FUND <TEXT> Document 1 - file: d124381dn30b2.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>2 <FILENAME>g124381g15h91.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 2 - file: g124381g15h91.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>g124381pie_01.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: g124381pie_01.jpg
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