<SEC-DOCUMENT>0001193125-16-444261-index.html : 20160129 <SEC-HEADER>0001193125-16-444261.hdr.sgml : 20160129 <ACCEPTANCE-DATETIME>20160129164005 ACCESSION NUMBER: 0001193125-16-444261 CONFORMED SUBMISSION TYPE: N-CSR PUBLIC DOCUMENT COUNT: 9 CONFORMED PERIOD OF REPORT: 20151130 FILED AS OF DATE: 20160129 DATE AS OF CHANGE: 20160129 EFFECTIVENESS DATE: 20160129 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-CSR SEC ACT: 1940 Act SEC FILE NUMBER: 811-06495 FILM NUMBER: 161373897 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-CSR <SEQUENCE>1 <FILENAME>d61829dncsr.htm <DESCRIPTION>FLAHERTY & CRUMRINE PREFERRED INCOME FLAHERTY & CRUMRINE PREFERRED INCOME <TEXT> Document 1 - file: d61829dncsr.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CODE ETH <SEQUENCE>2 <FILENAME>d61829dex99codeeth.htm <DESCRIPTION>CODE OF ETHICS <TEXT> Document 2 - file: d61829dex99codeeth.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CERT <SEQUENCE>3 <FILENAME>d61829dex99cert.htm <DESCRIPTION>302 CERTIFICATIONS <TEXT> Document 3 - file: d61829dex99cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.906CERT <SEQUENCE>4 <FILENAME>d61829dex99906cert.htm <DESCRIPTION>906 CERTIFICATION <TEXT> Document 4 - file: d61829dex99906cert.htm
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>g61829g91s93.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: g61829g91s93.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g61829pie_01.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: g61829pie_01.jpg
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