Flaherty & Crumrine 優先收入機會基金公司
US ˙ NYSE ˙ US33848E1064

SecurityPFO / Flaherty & Crumrine Preferred Income Opportunity Fund Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership94,830 shares
Latest Disclosed Value $ 857,263
Morgan Stanley reports 4.84% increase in ownership of PFO / Flaherty & Crumrine Preferred Income Opportunity Fund Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 94,830 shares of Flaherty & Crumrine Preferred Income Opportunity Fund Inc. (US:PFO) valued at $857,263 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 90,453 shares of Flaherty & Crumrine Preferred Income Opportunity Fund Inc.. This represents a change in shares of 4.84% during the quarter. The current value of the position is $865,798 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)
2026-05-15 2026-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 94,830 4,377 4.84 857 0.35 0.0001
2026-05-27 2025-12-31 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 90,453 -23,771 -20.81 855 -23.27 0.0001
2026-02-13 2025-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 90,453 -23,771 855 0.0001
2026-05-27 2025-09-30 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 114,224 2,896 2.60 1,114 8.16 0.0001
2025-11-14 2025-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 114,224 2,896 1,114 0.0001
2025-08-15 2025-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 111,328 -24,444 -18.00 1,030 -17.75 0.0001
2025-05-15 2025-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 135,772 -746 -0.55 1,252 1.71 0.0001
2025-05-15 2024-12-31 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 136,518 24,793 22.19 1,230 17.03 0.0001
2025-02-14 2024-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 136,518 24,793 1,230 0.0001
2025-05-14 2024-09-30 13F/A-2 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 111,725 3,017 2.78 1,051 14.24 0.0001
2025-02-14 2024-09-30 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 111,725 3,017 1,051 0.0001
2024-11-14 2024-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 111,725 3,017 1,051 0.0000
2025-05-14 2024-06-30 13F/A-2 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 108,708 2,329 2.19 921 2.56 0.0001
2024-10-17 2024-06-30 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 108,708 2,329 921 0.0001
2024-08-14 2024-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 108,708 2,329 921 0.0001
2024-10-17 2024-03-31 13F/A-2 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 106,379 12,073 12.80 898 19.60 0.0001
2024-08-16 2024-03-31 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 106,379 12,073 898 0.0000
2024-05-15 2024-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 106,379 12,073 898 0.0001
2024-08-16 2023-12-31 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 94,306 -9,489 -9.14 751 -2.85 0.0001
2024-02-13 2023-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 94,306 -9,489 751 0.0001
2023-11-15 2023-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 103,795 7,582 7.88 772 0.26 0.0001
2023-08-14 2023-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 96,213 -11,278 -10.49 771 -13.09 0.0001
2023-05-15 2023-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 107,491 -5,351 -4.74 887 -8.66 0.0001
2023-02-14 2022-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 112,842 -18,530 -14.10 970 -13.85 0.0001
2022-11-14 2022-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 131,372 5,417 4.30 1,126 -6.09 0.0002
2022-10-27 2022-06-30 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 125,955 -20,007 -13.71 1,199 -28.59 0.0002
2022-08-15 2022-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 125,955 -20,007 1,199 0.0000
2022-10-27 2022-03-31 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 145,962 -13,650 -8.55 1,679 -17.49 0.0002
2022-05-13 2022-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 145,962 -13,650 1,679 0.0002
2022-02-14 2021-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 159,612 -378 -0.24 2,035 -0.78 0.0003
2021-11-15 2021-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 159,990 4,191 2.69 2,051 -1.39 0.0003
2021-08-23 2021-06-30 13F/A-1 FLAHERTY & CRUMRINE PFD INCO COM 33848E106 155,799 1,451 0.94 2,080 2.41 0.0003
2021-08-16 2021-06-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 155,799 1,451 2,080 0.0001
2021-05-17 2021-03-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 154,348 10,424 7.24 2,031 7.57 0.0003
2021-02-16 2020-12-31 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 143,924 2,839 2.01 1,888 12.45 0.0003
2020-11-13 2020-09-30 13F FLAHERTY & CRUMRINE PFD INCO COM 33848E106 141,085 -11,304 -7.42 1,679 -1.00 0.0003
2020-08-14 2020-06-30 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 152,389 -1,248 -0.81 1,696 11.51 0.0004
2020-05-26 2020-03-31 13F/A-1 FLAHERTY & CRUMRIN PFD & INM COM 33848E106 153,637 -26,305 -14.62 1,521 -31.39 0.0004
2020-05-15 2020-03-31 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 153,637 -26,305 1,521 116.8445
2020-02-14 2019-12-31 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 179,942 -75,777 -29.63 2,217 -29.10 0.0005
2019-11-14 2019-09-30 13F FLAHERTY & CRUMRIN PFD & INM COM 33848E106 255,719 6,282 2.52 3,127 7.05 0.0008
2019-08-14 2019-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 249,437 16,550 7.11 2,921 11.79 0.0008
2019-05-15 2019-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 232,887 36,566 18.63 2,613 26.42 0.0007
2019-02-14 2018-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 196,321 44,179 29.04 2,067 16.71 0.0006
2019-04-23 2018-09-30 13F/A-2 FLAHERTY & CRUMRINE PFD COM 33848E106 152,142 4,117 2.78 1,771 11.31 0.0004
2018-11-20 2018-09-30 13F/A-1 FLAHERTY & CRUMRINE PFD COM 33848E106 152,142 0 1,771 0.0004
2018-11-14 2018-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 152,142 4,117 1,771
2019-04-23 2018-06-30 13F/A-1 FLAHERTY & CRUMRINE PFD COM 33848E106 148,025 -2,519 -1.67 1,591 -2.69 0.0004
2018-08-14 2018-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 148,025 -2,519 1,591
2019-04-23 2018-03-31 13F/A-1 FLAHERTY & CRUMRINE PFD COM 33848E106 150,544 5,240 3.61 1,635 -4.72 0.0005
2018-05-14 2018-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 150,544 5,240 1,635
2019-04-23 2017-12-31 13F/A-1 FLAHERTY & CRUMRINE PFD COM 33848E106 145,304 149 0.10 1,716 -3.54 0.0005
2018-02-14 2017-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 145,304 149 1,716
2017-11-14 2017-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 145,155 -6,527 -4.30 1,779 -6.52 0.0005
2017-08-11 2017-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 151,682 9,520 6.70 1,903 12.67 0.0006
2017-05-22 2017-03-31 13F/A-1 FLAHERTY & CRUMRINE PFD COM 33848E106 142,162 965 0.68 1,689 7.58 0.0005
2017-05-12 2017-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 142,162 0 1,689
2017-02-22 2016-12-31 13F/A-1 FLAHERTY & CRUMRINE PFD COM 33848E106 141,197 -643 -0.45 1,570 -3.74 0.0005
2017-02-13 2016-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 141,197 0 1,570
2016-11-10 2016-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 141,840 21,131 17.51 1,631 8.01 0.0006
2016-08-12 2016-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 120,709 3,697 3.16 1,510 9.34 0.0005
2016-05-12 2016-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 117,012 23,836 25.58 1,381 38.93 0.0005
2016-02-09 2015-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 93,176 7,389 8.61 994 12.83 0.0004
2016-02-08 2015-09-30 13F/A-1 FLAHERTY & CRUMRINE PFD COM 33848E106 85,787 -19,103 -18.21 881 -20.99 0.0003
2015-11-09 2015-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 85,787 0 881
2015-08-12 2015-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 104,890 -32,815 -23.83 1,115 -33.51 0.0004
2015-05-14 2015-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 137,705 25,684 22.93 1,677 29.60 0.0006
2015-02-13 2014-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 112,021 10,866 10.74 1,294 17.64 0.0005
2014-12-16 2014-09-30 13F/A-1 FLAHERTY & CRUMRINE PFD COM 33848E106 101,155 6,441 6.80 1,100 2.33 0.0004
2014-11-14 2014-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 101,155 0 1,100
2014-05-13 2014-03-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 94,714 15,496 19.56 1,075 34.71 0.0005
2014-02-13 2013-12-31 13F FLAHERTY & CRUMRINE PFD COM 33848E106 79,218 21,121 36.35 798 34.57 0.0003
2013-11-13 2013-09-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 58,097 12,073 26.23 593 17.19 0.0003
2013-08-08 2013-06-30 13F FLAHERTY & CRUMRINE PFD COM 33848E106 46,024 46,024 506 0.0003
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.