PIMCO Corporate & Income Opportunity Fund
US ˙ NYSE ˙ US72201B1017

SecurityPTY / PIMCO Corporate & Income Opportunity Fund
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership5,414 shares
Latest Disclosed Value $ 69,841
Parallel Advisors, LLC reports 23.24% decrease in ownership of PTY / PIMCO Corporate & Income Opportunity Fund

On February 11, 2026 - Parallel Advisors, LLC filed a 13F-HR form disclosing ownership of 5,414 shares of PIMCO Corporate & Income Opportunity Fund (US:PTY) valued at $69,841 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 7,053 shares of PIMCO Corporate & Income Opportunity Fund. This represents a change in shares of -23.24% during the quarter. The current value of the position is $64,102 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)
2026-02-11 2025-12-31 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 5,414 -1,639 -23.24 70 -31.68 0.0013
2025-11-13 2025-09-30 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 7,053 -94,377 -93.05 102 -92.84 0.0019
2025-07-08 2025-06-30 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 101,430 385 0.38 1,411 -3.49 0.0282
2025-04-08 2025-03-31 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 101,045 -1,524 -1.49 1,461 -0.81 0.0329
2025-02-10 2024-12-31 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 102,569 2,125 2.12 1,474 1.94 0.0332
2024-11-13 2024-09-30 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 100,444 -1 -0.00 1,445 0.56 0.0340
2024-08-08 2024-06-30 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 100,445 6,986 7.47 1,437 3.46 0.0368
2024-05-06 2024-03-31 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 93,459 0 0.00 1,390 12.29 0.0377
2024-02-12 2023-12-31 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 93,459 19,007 25.53 1,237 27.13 0.0367
2024-05-20 2023-09-30 13F/A-1 PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 74,452 0 0.00 973 -6.62 0.0324
2023-11-14 2023-09-30 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 74,452 0 973 0.0324
2024-05-20 2023-06-30 13F/A-1 PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 74,452 0 0.00 1,042 12.28 0.0336
2023-08-04 2023-06-30 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 74,452 0 1,042 0.0336
2024-05-20 2023-03-31 13F/A-1 PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 74,452 0 0.00 928 3.80 0.0313
2023-04-25 2023-03-31 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 74,452 0 928 0.0313
2023-02-06 2022-12-31 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 74,452 14,848 24.91 894 27.71 0.0388
2022-11-10 2022-09-30 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 59,604 15,013 33.67 700 25.45 0.0322
2022-08-01 2022-06-30 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 44,591 40,139 901.59 558 732.84 0.0256
2022-04-28 2022-03-31 13F PIMCO CORPORATE & INCOME OPPOR COM CEF 72201B101 4,452 4,452 67 0.0027
2019-05-01 2019-03-31 13F PIMCO CORPORATE & INCOME OPP F COM CEF 72201B101 0 -400 -100.00 0 -100.00
2019-02-05 2018-12-31 13F PIMCO CORPORATE & INCOME OPP F COM CEF 72201B101 400 0 0.00 6 -14.29 0.0008
2018-11-01 2018-09-30 13F PIMCO CORPORATE & INCOME OPP F COM CEF 72201B101 400 0 0.00 7 16.67 0.0009
2018-07-30 2018-06-30 13F PIMCO CORPORATE & INCOME OPP F COM CEF 72201B101 400 0 0.00 6 -14.29 0.0009
2018-05-08 2018-03-31 13F PIMCO CORPORATE & INCOME OPP F COM CEF 72201B101 400 0 0.00 7 0.00 0.0011
2018-02-13 2017-12-31 13F PIMCO CORPORATE & INCOME OPP F COM CEF 72201B101 400 0 0.00 7 0.00 0.0011
2017-11-15 2017-09-30 13F/A-1 PIMCO CORPORATE & INCOME OPP F COM CEF 72201B101 400 0 0.00 7 0.00 0.0012
2017-08-07 2017-06-30 13F PIMCO CORPORATE & INCOME OPP F COM CEF 72201B101 400 0 0.00 7 16.67 0.0013
2017-05-12 2017-03-31 13F/A-1 PIMCO CORPORATE & INCOME OPP F COM CEF 72201B101 400 400 6 0.0012
2017-05-12 2017-03-31 13F PIMCO CORPORATE & INCOME OPP F COM CEF 72201B101 400 6
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.