PIMCO Corporate & Income Opportunity Fund
US ˙ NYSE ˙ US72201B1017

SecurityPTY / PIMCO Corporate & Income Opportunity Fund
InstitutionVirtu Financial LLC
Latest Disclosed Ownership38,745 shares
Latest Disclosed Value $ 467
Virtu Financial LLC ownership in PTY / PIMCO Corporate & Income Opportunity Fund

On May 14, 2026 - Virtu Financial LLC filed a 13F-HR form disclosing ownership of 38,745 shares of PIMCO Corporate & Income Opportunity Fund (US:PTY) valued at $467,265 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 23, 2026 disclosing 0 shares of PIMCO Corporate & Income Opportunity Fund. The current value of the position is $459,128 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)
2026-05-14 2026-03-31 13F PIMCO CORPORATE INCOME OPP COM 72201B101 38,745 38,745 0 0.0193
2026-02-23 2025-12-31 13F IMCO CORPORATE INCOME OPP COM 72201B101 0 -20,196 -100.00 0 0.0000
2025-11-14 2025-09-30 13F IMCO CORPORATE INCOME OPP COM 72201B101 20,196 670 3.43 0 0.0163
2025-08-12 2025-06-30 13F IMCO CORPORATE INCOME OPP COM 72201B101 19,526 19,526 0 0.0139
2025-02-11 2024-12-31 13F PIMCO CORPORATE INCOME OPP COM 72201B101 0 -10,665 -100.00 0 0.0000
2024-11-20 2024-09-30 13F PIMCO CORPORATE INCOME OPP COM 72201B101 10,665 -2,444 -18.64 0 0.0084
2024-08-09 2024-06-30 13F PIMCO CORPORATE INCOME OPP COM 72201B101 13,109 13,109 0 0.0131
2024-05-20 2024-03-31 13F PIMCO CORPORATE INCOME OPP COM 72201B101 0 -13,746 -100.00 0 0.0000
2024-02-26 2023-12-31 13F PIMCO CORPORATE INCOME OPP COM 72201B101 13,746 -37,600 -73.23 0 0.0144
2023-11-15 2023-09-30 13F PIMCO CORPORATE INCOME OPP COM 72201B101 51,346 51,346 1 0.0667
2023-05-01 2023-03-31 13F PIMCO CORPORATE INCOME OPP COM 72201B101 0 -21,731 -100.00 0 0.0000
2023-02-15 2022-12-31 13F PIMCO CORPORATE INCOME OPP COM 72201B101 21,731 1,530 7.57 0 -100.00 0.0345
2022-11-07 2022-09-30 13F PIMCO CORPORATE INCOME OPP COM 72201B101 20,201 20,201 237 0.0217
2022-05-17 2022-03-31 13F PIMCO CORPORATE INCOME OPP COM 72201B101 0 -22,749 -100.00 0 -100.00
2022-02-17 2021-12-31 13F PIMCO CORPORATE INCOME OPP COM 72201B101 22,749 22,749 376 0.0385
2021-09-17 2021-06-30 13F PIMCO CORPORATE INCOME OPP COM 72201B101 0 -14,922 -100.00 0 -100.00
2021-05-19 2021-03-31 13F PIMCO CORPORATE INCOME OPP COM 72201B101 14,922 14,922 273 0.0193
2019-11-20 2019-09-30 13F PIMCO CORPORATE INCOME OPP COM 72201B101 0 -37,966 -100.00 0 -100.00
2019-08-13 2019-06-30 13F PIMCO CORPORATE INCOME OPP COM 72201B101 37,966 37,966 689 0.0404
2018-02-09 2017-12-31 13F PIMCO CORPORATE INCOME OPP COM 72201B101 0 -13,868 -100.00 0 -100.00
2017-11-17 2017-09-30 13F/A-1 PIMCO CORPORATE INCOME OPP COM 72201B101 13,868 13,868 233 0.0115
2017-11-15 2017-09-30 13F PIMCO CORPORATE INCOME OPP COM 72201B101 13,868 0
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.