PIMCO Corporate & Income Opportunity Fund
US ˙ NYSE ˙ US72201B1017

SecurityPTY / PIMCO Corporate & Income Opportunity Fund
InstitutionPrivate Advisor Group, LLC
Latest Disclosed Ownership656,503 shares
Latest Disclosed Value $ 7,917,416
Private Advisor Group, LLC reports 16.46% decrease in ownership of PTY / PIMCO Corporate & Income Opportunity Fund

On April 24, 2026 - Private Advisor Group, LLC filed a 13F-HR form disclosing ownership of 656,503 shares of PIMCO Corporate & Income Opportunity Fund (US:PTY) valued at $7,917,426 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 785,844 shares of PIMCO Corporate & Income Opportunity Fund. This represents a change in shares of -16.46% during the quarter. The current value of the position is $7,772,996 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 PIMCO CORPORATE & INCOME OPP COM 72201B101 656,503 -129,341 -16.46 7,917 -21.90 0.0352
2026-02-17 2025-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 785,844 73,776 10.36 10,137 -1.41 0.0456
2025-11-13 2025-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 712,068 134,053 23.19 10,282 27.89 0.0506
2025-08-11 2025-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 578,015 86,040 17.49 8,040 13.03 0.0433
2025-05-05 2025-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 491,975 20,865 4.43 7,114 5.08 0.0430
2025-02-03 2024-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 471,110 60,603 14.76 6,770 14.59 0.0381
2024-10-22 2024-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 410,507 56,620 16.00 5,907 16.65 0.0367
2024-08-05 2024-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 353,887 25,049 7.62 5,064 3.58 0.0340
2024-04-30 2024-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 328,838 2,446 0.75 4,890 13.15 0.0351
2024-02-06 2023-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 326,392 10,360 3.28 4,321 4.62 0.0336
2023-11-03 2023-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 316,032 39,482 14.28 4,131 6.69 0.0369
2023-08-10 2023-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 276,550 14,634 5.59 3,872 18.52 0.0337
2023-05-10 2023-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 261,916 90,675 52.95 3,266 163,200.00 0.0312
2023-01-18 2022-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 171,241 22,975 15.50 2 -99.89 0.0001
2022-10-14 2022-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 148,266 37,969 34.42 1,743 26.40 0.0200
2022-07-13 2022-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 110,297 9,706 9.65 1,379 -10.69 0.0123
2022-05-12 2022-03-31 13F/A-1 PIMCO CORPORATE & INCOME OPP COM 72201B101 100,591 19,903 24.67 1,544 15.66 0.0118
2022-05-10 2022-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 80,688 0 1,335 0.0100
2022-02-10 2021-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 80,688 79 0.10 1,335 -9.43 0.0100
2021-10-14 2021-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 80,609 10,461 14.91 1,474 6.20 0.0094
2021-08-12 2021-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 70,148 -4,040 -5.45 1,388 2.44 0.0121
2021-04-22 2021-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 74,188 2,696 3.77 1,355 6.19 0.0129
2021-04-01 2020-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 71,492 1,603 2.29 1,276 13.22 0.0133
2020-11-02 2020-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 69,889 -6,756 -8.81 1,127 -5.21 0.0147
2020-08-17 2020-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 76,645 -23,478 -23.45 1,189 -8.04 0.0165
2020-05-12 2020-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 100,123 31,987 46.95 1,293 -0.15 0.0237
2020-02-10 2019-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 68,136 15,517 29.49 1,295 35.60 0.0201
2019-11-13 2019-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 52,619 -3,858 -6.83 955 -6.74 0.0148
2019-08-14 2019-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 56,477 12,750 29.16 1,024 33.86 0.0185
2019-05-13 2019-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 43,727 11,566 35.96 765 55.17 0.0151
2019-02-08 2018-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 32,161 1,367 4.44 493 -10.36 0.0119
2018-11-01 2018-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 30,794 6,888 28.81 550 30.64 0.0113
2018-08-09 2018-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 23,906 23,906 421 0.0069
2018-05-09 2018-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 0 -25,533 -100.00 0 -100.00
2018-02-07 2017-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 25,533 -3,213 -11.18 429 -11.91 0.0181
2017-11-13 2017-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 28,746 3,466 13.71 487 17.07 0.0120
2017-08-10 2017-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 25,280 -5,291 -17.31 416 -13.51 0.0113
2017-05-10 2017-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 30,571 13,552 79.63 481 91.63 0.0135
2017-02-09 2016-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 17,019 3,457 25.49 251 24.88 0.0082
2016-11-10 2016-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 13,562 13,562 201 0.0082
2016-08-09 2016-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 0 -12,208 -100.00 0 -100.00
2016-05-13 2016-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 12,208 -18,126 -59.75 166 -59.01 0.0080
2016-02-09 2015-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 30,334 -11,677 -27.80 405 -27.55 0.0194
2015-11-13 2015-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 42,011 -67,545 -61.65 559 -64.89 0.0307
2015-08-13 2015-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 109,556 36,685 50.34 1,592 38.56 0.0756
2015-05-13 2015-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 72,871 1,250 1.75 1,149 0.88 0.0662
2015-02-17 2014-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 71,621 8,560 13.57 1,139 5.86 0.0733
2014-11-12 2014-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 63,061 -5,240 -7.67 1,076 -16.39 0.0744
2014-08-08 2014-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 68,301 53,886 373.82 1,287 395.00 0.1107
2014-05-15 2014-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 14,415 2,000 16.11 260 21.50 0.0274
2014-02-13 2013-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 12,415 12,415 214 0.0239
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.