| Filed On | Filing |
|---|---|
| 31 Jul 2025 | CERTIFIED SEMI-ANNUAL SHAREHOLDER REPORT |
| 30 Jul 2024 | CERTIFIED SEMI-ANNUAL SHAREHOLDER REPORT |
| 03 Aug 2023 | CERTIFIED SEMI-ANNUAL SHAREHOLDER REPORT |
| 29 Jul 2022 | CERTIFIED SEMI-ANNUAL SHAREHOLDER REPORT |
| 30 Jul 2021 | CERTIFIED SEMI-ANNUAL SHAREHOLDER REPORT |
| 31 Jul 2020 | CERTIFIED SEMI-ANNUAL SHAREHOLDER REPORT |
| 29 Jul 2019 | CERTIFIED SEMI-ANNUAL SHAREHOLDER REPORT |
| 27 Jul 2018 | SEMI-ANNUAL SHAREHOLDER REPORT |
| 28 Jul 2017 | SEMI-ANNUAL SHAREHOLDER REPORT |
| 29 Jul 2016 | FLAHERTY & CRUMRINE PREFERRED INCOME FLAHERTY & CRUMRINE PREFERRED INCOME |
| 29 Jul 2015 | FLAHERTY & CRUMRINE PREFERRED INCOME FLAHERTY & CRUMRINE PREFERRED INCOME |
| 30 Jul 2014 | FLAHERTY & CRUMRINE PREFERRED INCOME OPPORTUNITY FUND |
| 30 Jul 2013 | FLAHERTY & CRUMRINE PREFERRED INCOME OPPORTUNITY FUND |
| 30 Jul 2012 | FLAHERTY & CRUMRINE PREFERRED INCOME OPPORTUNITY FUND INC |
| 08 Aug 2011 | FORM N-CSRS |
| 28 Jul 2010 | N-CSRS |
| 30 Jul 2009 | PFO NCSR 1108 |
| 30 Jul 2008 | PFO NCSRS 0508 |
| 27 Jul 2007 | PFO NCSRS |
| 17 Jul 2006 | PFO NCSRS 0506 |
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