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

SecurityPFO / Flaherty & Crumrine Preferred Income Opportunity Fund Inc.
InstitutionD.a. Davidson & Co.
Latest Disclosed Ownership85,315 shares
Latest Disclosed Value $ 771,256
D.a. Davidson & Co. reports 0.21% decrease in ownership of PFO / Flaherty & Crumrine Preferred Income Opportunity Fund Inc.

On May 5, 2026 - D.a. Davidson & Co. filed a 13F-HR form disclosing ownership of 85,315 shares of Flaherty & Crumrine Preferred Income Opportunity Fund Inc. (US:PFO) valued at $771,248 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 85,496 shares of Flaherty & Crumrine Preferred Income Opportunity Fund Inc.. This represents a change in shares of -0.21% during the quarter. The current value of the position is $778,926 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)
2026-05-05 2026-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 85,315 -181 -0.21 771 -4.46 0.0047
2026-01-29 2025-12-31 13F FLAHERTY & CRUMRINE PFD CO COM 33848E106 85,496 -2,519 -2.86 808 -5.94 0.0049
2025-10-22 2025-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 88,015 10,787 13.97 858 20.17 0.0055
2025-07-30 2025-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 77,228 13,701 21.57 714 22.05 0.0050
2025-04-28 2025-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 63,527 -2,022 -3.08 586 -0.85 0.0047
2025-01-31 2024-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 65,549 -1,885 -2.80 591 -6.94 0.0048
2024-11-13 2024-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 67,434 -98,210 -59.29 635 -54.81 0.0052
2024-08-01 2024-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 165,644 6,505 4.09 1,403 4.47 0.0124
2024-05-13 2024-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 159,139 -210 -0.13 1,343 5.91 0.0121
2024-02-09 2023-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 159,349 -12,986 -7.54 1,268 -1.09 0.0124
2023-11-08 2023-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 172,335 -25,146 -12.73 1,282 -18.91 0.0139
2023-08-11 2023-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 197,481 25,756 15.00 1,582 11.65 0.0167
2023-04-25 2023-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 171,725 90,665 111.85 1,417 103.16 0.0159
2023-02-03 2022-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 81,060 11,822 17.07 697 17.54 0.0082
2022-11-07 2022-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 69,238 17,437 33.66 593 20.28 0.0078
2022-07-28 2022-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 51,801 10,590 25.70 493 4.01 0.0062
2022-05-12 2022-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 41,211 3,475 9.21 474 -1.46 0.0052
2022-01-31 2021-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 37,736 501 1.35 481 0.84 0.0051
2021-11-15 2021-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 37,235 669 1.83 477 -2.25 0.0055
2021-08-10 2021-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 36,566 -1,034 -2.75 488 -1.41 0.0057
2021-05-07 2021-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 37,600 31 0.08 495 0.41 0.0063
2021-02-10 2020-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 37,569 -316 -0.83 493 9.31 0.0075
2020-11-02 2020-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 37,885 31 0.08 451 7.13 0.0078
2020-08-10 2020-06-30 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 37,854 -1,869 -4.71 421 7.12 0.0079
2020-05-05 2020-03-31 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 39,723 -111 -0.28 393 -19.96 0.0077
2020-02-14 2019-12-31 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 39,834 1,527 3.99 491 4.69 0.0079
2019-11-05 2019-09-30 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 38,307 137 0.36 469 4.92 0.0084
2019-08-13 2019-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 38,170 1,201 3.25 447 7.71 0.0083
2019-05-13 2019-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 36,969 2,836 8.31 415 15.60 0.0071
2019-01-29 2018-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 34,133 1,500 4.60 359 -5.53 0.0070
2018-11-13 2018-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 32,633 657 2.05 380 10.47 0.0068
2018-08-02 2018-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 31,976 151 0.47 344 -0.58 0.0067
2018-05-04 2018-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 31,825 9,840 44.76 346 33.08 0.0072
2018-02-08 2017-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 21,985 1,560 7.64 260 4.00 0.0055
2017-11-08 2017-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 20,425 3,050 17.55 250 14.68 0.0049
2017-08-11 2017-06-30 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 17,375 7,130 69.59 218 80.17 0.0049
2017-05-12 2017-03-31 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 10,245 1,000 10.82 121 18.63 0.0029
2017-02-15 2016-12-31 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 9,245 9,245 -9.76 102 -15.70 0.0023
2016-11-18 2016-09-30 13F/A-1 FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 0 -9,245 -100.00 0 -100.00
2016-08-13 2016-06-30 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 9,245 155 1.71 115 7.48 0.0034
2016-05-13 2016-03-31 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 9,090 0 0.00 107 11.46 0.0033
2016-02-12 2015-12-31 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 9,090 300 3.41 96 6.67 0.0031
2015-11-13 2015-09-30 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 8,790 0 0.00 90 -3.23 0.0031
2015-08-14 2015-06-30 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 8,790 0 0.00 93 -13.08 0.0031
2015-05-06 2015-03-31 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 8,790 -10,100 -53.47 107 -50.92 0.0035
2015-02-12 2014-12-31 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 18,890 0 0.00 218 6.34 0.0071
2014-11-12 2014-09-30 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 18,890 4,500 31.27 205 23.49 0.0069
2014-07-29 2014-06-30 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 14,390 0 0.00 166 1.84 0.0056
2014-05-05 2014-03-31 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 14,390 1,000 7.47 163 21.64 0.0058
2014-02-13 2013-12-31 13F/A-1 FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 13,390 13,390 134 0.0050
2014-02-12 2013-12-31 13F FLAHERTY & CRUMINE PFD INCOME OPP FD COM 33848E106 13,390 134 0.0050
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.