Flaherty & Crumrine Preferred Income Opportunity Fund Inc.
US ˙ NYSE ˙ US33848E1064

SecurityPFO / Flaherty & Crumrine Preferred Income Opportunity Fund Inc.
InstitutionPrivate Advisor Group, LLC
Latest Disclosed Ownership186,341 shares
Latest Disclosed Value $ 1,684,518
Private Advisor Group, LLC reports 1.99% decrease in ownership of PFO / Flaherty & Crumrine Preferred Income Opportunity Fund Inc.

On April 24, 2026 - Private Advisor Group, LLC filed a 13F-HR form disclosing ownership of 186,341 shares of Flaherty & Crumrine Preferred Income Opportunity Fund Inc. (US:PFO) valued at $1,684,523 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 190,128 shares of Flaherty & Crumrine Preferred Income Opportunity Fund Inc.. This represents a change in shares of -1.99% during the quarter. The current value of the position is $1,693,840 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-24 2026-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 186,341 -3,787 -1.99 1,685 -6.24 0.0075
2026-02-17 2025-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 190,128 -1,025 -0.54 1,797 -3.60 0.0081
2025-11-13 2025-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 191,153 1,745 0.92 1,864 6.34 0.0092
2025-08-11 2025-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 189,408 1,245 0.66 1,752 1.04 0.0094
2025-05-05 2025-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 188,163 -4,766 -2.47 1,735 -0.23 0.0105
2025-02-03 2024-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 192,929 -8,653 -4.29 1,738 -8.33 0.0098
2024-10-22 2024-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 201,582 -7,603 -3.63 1,897 7.06 0.0118
2024-08-05 2024-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 209,185 1,219 0.59 1,772 0.91 0.0119
2024-04-30 2024-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 207,966 3,790 1.86 1,755 8.00 0.0126
2024-02-06 2023-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 204,176 2,808 1.39 1,625 8.48 0.0126
2023-11-03 2023-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 201,368 4,159 2.11 1,498 -5.13 0.0134
2023-08-10 2023-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 197,209 3,061 1.58 1,580 -1.37 0.0137
2023-05-10 2023-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 194,148 50,276 34.94 1,602 160,000.00 0.0153
2023-01-18 2022-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 143,872 5,090 3.67 1 -99.92 0.0001
2022-10-14 2022-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 138,782 65,689 89.87 1,189 70.83 0.0137
2022-07-13 2022-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 73,093 34,265 88.25 696 55.70 0.0062
2022-05-12 2022-03-31 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 38,828 23,825 158.80 447 134.03 0.0034
2022-05-10 2022-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 15,003 0 191 0.0014
2022-02-10 2021-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 15,003 3,318 28.40 191 27.33 0.0014
2021-10-14 2021-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 11,685 257 2.25 150 -1.96 0.0010
2021-08-12 2021-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 11,428 -612 -5.08 153 -3.16 0.0013
2021-04-22 2021-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 12,040 -77,774 -86.59 158 -86.59 0.0015
2021-04-01 2020-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 89,814 -4,661 -4.93 1,178 4.80 0.0123
2020-11-02 2020-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 94,475 5,999 6.78 1,124 14.11 0.0146
2020-08-17 2020-06-30 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 88,476 9,116 11.49 985 25.32 0.0137
2020-05-12 2020-03-31 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 79,360 22,056 38.49 786 11.33 0.0144
2020-02-10 2019-12-31 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 57,304 1,288 2.30 706 3.07 0.0110
2019-11-13 2019-09-30 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 56,016 1,020 1.85 685 6.37 0.0107
2019-08-14 2019-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 54,996 54,996 644 0.0116
2019-05-13 2019-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 0 -34,662 -100.00 0 -100.00
2019-02-08 2018-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 34,662 -6,884 -16.57 365 -24.59 0.0088
2018-11-01 2018-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 41,546 41,546 484 0.0099
2018-08-09 2018-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 0 -25,295 -100.00 0 -100.00
2018-05-09 2018-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 25,295 13,834 120.70 275 105.22 0.0108
2018-02-07 2017-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 11,461 -18,180 -61.33 134 -62.67 0.0057
2017-11-13 2017-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 29,641 3,129 11.80 359 7.16 0.0089
2017-08-10 2017-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 26,512 3,874 17.11 335 25.47 0.0091
2017-05-10 2017-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 22,638 22,638 -14.61 267 -20.30 0.0075
2016-08-09 2016-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 0 -19,722 -100.00 0 -100.00
2016-05-13 2016-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 19,722 2,665 15.62 233 28.02 0.0113
2016-02-09 2015-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 17,057 6,512 61.75 182 68.52 0.0087
2015-11-13 2015-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 10,545 10,545 108 0.0059
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.