Flaherty & Crumrine Preferred Income Opportunity Fund Inc. declared dividend of $0.066 per share for the month of August, $0.066 per share for the month of September and $0.066 per share for the month of October 2018. The dividend will be payable on August 31, 2018, September 28, 2018 and October 31, 2018 to the holders of record on August 24, 2018, September 21, 2018 and October 24, 2018 and the ex-dividend date is on August 23, 2018, September 20, 2018 and October 23, 2018.