<SEC-DOCUMENT>0001193125-15-357622-index.html : 20151029 <SEC-HEADER>0001193125-15-357622.hdr.sgml : 20151029 <ACCEPTANCE-DATETIME>20151029131759 ACCESSION NUMBER: 0001193125-15-357622 CONFORMED SUBMISSION TYPE: N-Q PUBLIC DOCUMENT COUNT: 4 CONFORMED PERIOD OF REPORT: 20150831 FILED AS OF DATE: 20151029 DATE AS OF CHANGE: 20151029 EFFECTIVENESS DATE: 20151029 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-Q SEC ACT: 1940 Act SEC FILE NUMBER: 811-06495 FILM NUMBER: 151183004 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-Q <SEQUENCE>1 <FILENAME>d89257dnq.htm <DESCRIPTION>FLAHERTY & CRUMRINE PREFERRED INCOME OPPORTUNITY FUND <TEXT> Document 1 - file: d89257dnq.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CERT <SEQUENCE>2 <FILENAME>d89257dex99cert.htm <DESCRIPTION>302 CERTIFICATIONS <TEXT> Document 2 - file: d89257dex99cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>g89257g15h91.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: g89257g15h91.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>g89257pie_01.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: g89257pie_01.jpg
</DOCUMENT> </SEC-DOCUMENT>