<SEC-DOCUMENT>0000940400-17-000465-index.html : 20170728 <SEC-HEADER>0000940400-17-000465.hdr.sgml : 20170728 <ACCEPTANCE-DATETIME>20170728154912 ACCESSION NUMBER: 0000940400-17-000465 CONFORMED SUBMISSION TYPE: NSAR-A PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20170531 FILED AS OF DATE: 20170728 DATE AS OF CHANGE: 20170728 EFFECTIVENESS DATE: 20170728 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: NSAR-A SEC ACT: 1940 Act SEC FILE NUMBER: 811-06495 FILM NUMBER: 17989892 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>NSAR-A <SEQUENCE>1 <FILENAME>fcPFO.fil <TEXT> Document 1 - file: fcPFO.fil
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.77C VOTES <SEQUENCE>2 <FILENAME>fcPFO77c.txt <TEXT> Document 2 - file: fcPFO77c.txt
</DOCUMENT> </SEC-DOCUMENT>