PIMCO Corporate & Income Opportunity Fund
US ˙ NYSE ˙ US72201B1017

SecurityPTY / PIMCO Corporate & Income Opportunity Fund
InstitutionStifel Financial Corp
Latest Disclosed Ownership175,280 shares
Latest Disclosed Value $ 2,113,861
Stifel Financial Corp reports 3.68% increase in ownership of PTY / PIMCO Corporate & Income Opportunity Fund

On May 12, 2026 - Stifel Financial Corp filed a 13F-HR form disclosing ownership of 175,280 shares of PIMCO Corporate & Income Opportunity Fund (US:PTY) valued at $2,113,877 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 169,052 shares of PIMCO Corporate & Income Opportunity Fund. This represents a change in shares of 3.68% during the quarter. The current value of the position is $2,080,574 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)
2026-05-12 2026-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 175,280 6,228 3.68 2,114 -3.07 0.0005
2026-02-13 2025-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 169,052 5,989 3.67 2,181 -7.39 0.0020
2025-11-12 2025-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 163,063 4,358 2.75 2,355 6.66 0.0021
2025-08-14 2025-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 158,705 -5,615 -3.42 2,208 -7.11 0.0021
2025-05-14 2025-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 164,320 4,851 3.04 2,376 3.71 0.0025
2025-02-13 2024-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 159,469 27,311 20.67 2,292 20.52 0.0024
2024-11-14 2024-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 132,158 -6,661 -4.80 1,902 -4.28 0.0020
2024-08-13 2024-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 138,819 5,944 4.47 1,986 0.56 0.0022
2024-05-14 2024-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 132,875 -1,841 -1.37 1,976 10.77 0.0023
2024-02-12 2023-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 134,716 -2,770 -2.01 1,784 -0.72 0.0022
2023-11-13 2023-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 137,486 -2,801 -2.00 1,797 -8.51 0.0025
2023-08-14 2023-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 140,287 4,805 3.55 1,964 16.22 0.0027
2023-05-12 2023-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 135,482 57,282 73.25 1,689 79.87 0.0024
2023-02-13 2022-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 78,200 51,062 188.16 939 194.36 0.0014
2022-11-14 2022-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 27,138 177 0.66 319 -5.62 0.0005
2022-08-15 2022-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 26,961 1,451 5.69 338 -13.78 0.0005
2022-05-13 2022-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 25,510 6,920 37.22 392 27.27 0.0005
2022-02-14 2021-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 18,590 -753 -3.89 308 -12.75 0.0004
2021-11-15 2021-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 19,343 -2,293 -10.60 353 -17.52 0.0005
2021-08-13 2021-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 21,636 -3,088 -12.49 428 -5.10 0.0006
2021-05-14 2021-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 24,724 945 3.97 451 6.12 0.0007
2021-02-12 2020-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 23,779 2,001 9.19 425 21.08 0.0008
2020-11-16 2020-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 21,778 0 0.00 351 3.85 0.0007
2020-08-14 2020-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 21,778 -3,227 -12.91 338 4.97 0.0008
2020-05-14 2020-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 25,005 1,809 7.80 322 -26.98 0.0009
2020-02-13 2019-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 23,196 3,450 17.47 441 23.18 0.0009
2019-11-19 2019-09-30 13F/A-1 PIMCO CORPORATE & INCOME OPP COM 72201B101 19,746 494 2.57 358 2.58 0.0009
2019-11-13 2019-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 19,746 494 358 200.6769
2019-08-14 2019-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 19,252 2,790 16.95 349 22.03 0.0009
2019-05-14 2019-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 16,462 504 3.16 286 16.73 0.0008
2019-02-13 2018-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 15,958 594 3.87 245 -11.23 0.0008
2018-11-13 2018-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 15,364 -5,119 -24.99 276 -22.25 0.0008
2018-08-14 2018-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,483 5,490 36.62 355 40.32 0.0011
2018-05-11 2018-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 14,993 14,993 253 0.0008
2016-11-15 2016-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 0 -12,732 -100.00 0 -100.00
2016-08-17 2016-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 12,732 -7,203 -36.13 180 -33.58 0.0008
2016-05-16 2016-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 19,935 5,365 36.82 271 39.69 0.0014
2016-03-21 2015-12-31 13F/A-2 PIMCO CORPORATE & INCOME OPP COM 72201B101 14,570 1,500 11.48 194 11.49 0.0010
2016-02-26 2015-12-31 13F/A-1 PIMCO CORPORATE & INCOME OPP COM 72201B101 14,570 0 194 0.0010
2016-02-16 2015-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 11,170 1,470
2015-11-16 2015-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 13,070 -100 -0.76 174 -8.90 0.0010
2015-08-17 2015-06-30 13F/A-1 PIMCO CORPORATE & INCOME OPP COM 72201B101 13,170 100 0.77 191 -7.28 0.0010
2015-08-17 2015-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 13,170 191
2015-05-14 2015-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 13,070 0 0.00 206 -0.96 0.0011
2015-02-13 2014-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 13,070 1,500 12.96 208 5.58 0.0012
2014-11-13 2014-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 11,570 -600 -4.93 197 -13.97 0.0017
2014-08-14 2014-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 12,170 184 1.54 229 6.02 0.0021
2014-05-15 2014-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 11,986 11,986 216 0.0021
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.