PIMCO Corporate & Income Opportunity Fund
US ˙ NYSE ˙ US72201B1017

SecurityPTY / PIMCO Corporate & Income Opportunity Fund
InstitutionNorthern Trust Corp
Latest Disclosed Ownership24,357 shares
Latest Disclosed Value $ 293,745
Northern Trust Corp ownership in PTY / PIMCO Corporate & Income Opportunity Fund

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 24,357 shares of PIMCO Corporate & Income Opportunity Fund (US:PTY) valued at $293,745 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 24,357 shares of PIMCO Corporate & Income Opportunity Fund. This represents a change in shares of 0.00% during the quarter. The current value of the position is $289,118 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 24,357 0 0.00 294 -6.69 0.0000
2026-02-17 2025-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 24,357 24,357 314 0.0000
2024-08-14 2024-06-30 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 0 -44,811 -100.00 0 -100.00
2024-05-14 2024-03-31 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 44,811 44,811 666 0.0001
2023-08-11 2023-06-30 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 0 -10,216 -100.00 0 -100.00
2023-05-15 2023-03-31 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 10,216 0 0.00 127 4.10 0.0000
2023-02-13 2022-12-31 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 10,216 -1,890 -15.61 123 12,100.00 0.0000
2022-11-14 2022-09-30 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 12,106 12,106 1 0.0000
2021-11-15 2021-09-30 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 0 -112,998 -100.00 0 -100.00
2021-08-13 2021-06-30 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 112,998 112,998 22 0.0000
2016-02-12 2015-12-31 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 0 -11,375 -100.00 0 -100.00
2015-11-12 2015-09-30 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 11,375 11,375 0.00 1 0.0000
2015-08-13 2015-06-30 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 0 -16,603 -100.00 0 -100.00
2015-05-14 2015-03-31 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 16,603 4,338 35.37 3 50.00 0.0000
2015-02-12 2014-12-31 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 12,265 12,265 -26.13 2 -33.33 0.0000
2014-11-13 2014-09-30 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 0 -17,486 -100.00 0 -100.00
2014-08-14 2014-06-30 13F PIMCO CORPORATE & INCOME OPP UNDEFIND 72201B101 17,486 17,486 3 0.0000
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.