PIMCO Corporate & Income Opportunity Fund
US ˙ NYSE ˙ US72201B1017

SecurityPTY / PIMCO Corporate & Income Opportunity Fund
InstitutionSigma Planning Corp
Latest Disclosed Ownership42,816 shares
Latest Disclosed Value $ 516,358
Sigma Planning Corp reports 5.42% decrease in ownership of PTY / PIMCO Corporate & Income Opportunity Fund

On May 4, 2026 - Sigma Planning Corp filed a 13F-HR form disclosing ownership of 42,816 shares of PIMCO Corporate & Income Opportunity Fund (US:PTY) valued at $516,361 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 45,272 shares of PIMCO Corporate & Income Opportunity Fund. This represents a change in shares of -5.42% during the quarter. The current value of the position is $506,941 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-04 2026-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 42,816 -2,456 -5.42 516 -11.64 0.0143
2026-01-30 2025-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 45,272 7,111 18.63 584 5.99 0.0161
2025-11-10 2025-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 38,161 -4,037 -9.57 551 -5.97 0.0157
2025-08-05 2025-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 42,198 -9,999 -19.16 587 -22.28 0.0176
2025-05-02 2025-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 52,197 5,268 11.23 755 11.87 0.0241
2025-02-03 2024-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 46,929 640 1.38 674 1.20 0.0212
2024-11-04 2024-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 46,289 3,510 8.20 666 8.82 0.0204
2024-08-06 2024-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 42,779 785 1.87 612 -1.92 0.0194
2024-05-02 2024-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 41,994 27,565 191.04 624 226.70 0.0196
2024-02-01 2023-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 14,429 -23,957 -62.41 191 -61.88 0.0149
2023-11-06 2023-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 38,386 1,238 3.33 502 -3.65 0.0188
2023-08-02 2023-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 37,148 453 1.23 520 13.79 0.0187
2023-05-08 2023-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 36,695 -4,258 -10.40 458 -6.92 0.0152
2023-01-24 2022-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 40,953 368 0.91 492 2.94 0.0176
2022-11-10 2022-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 40,585 -3,434 -7.80 477 -13.43 0.0182
2022-08-11 2022-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 44,019 -531 -1.19 551 -19.44 0.0191
2022-04-20 2022-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 44,550 5,623 14.44 684 6.21 0.0205
2022-02-02 2021-12-31 13F PIMCO CORPORATE OPPORTUNITY FUND CEF 72201B101 38,927 351 0.91 644 -8.78 0.0179
2021-10-28 2021-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 38,576 -18,586 -32.51 706 -37.58 0.0212
2021-08-13 2021-06-30 13F PIMCO CORPORATE OPPORTUNITY FUND CEF 72201B101 57,162 -14,687 -20.44 1,131 -13.86 0.0337
2021-05-06 2021-03-31 13F PIMCO CORPORATE OPPORTUNITY FUND CEF 72201B101 71,849 2,877 4.17 1,313 6.66 0.0419
2021-02-09 2020-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 68,972 44,404 180.74 1,231 210.86 0.0419
2020-11-03 2020-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 24,568 2,715 12.42 396 16.81 0.0157
2020-07-31 2020-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 21,853 1,176 5.69 339 26.97 0.0149
2020-05-01 2020-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,677 -4,309 -17.25 267 -43.79 0.0159
2020-02-03 2019-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 24,986 227 0.92 475 5.79 0.0200
2019-11-01 2019-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 24,759 -5,456 -18.06 449 -18.07 0.0215
2019-08-01 2019-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 30,215 827 2.81 548 6.61 0.0282
2019-05-01 2019-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 29,388 -1,576 -5.09 514 8.21 0.0292
2019-01-31 2018-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 30,964 -8,571 -21.68 475 -32.72 0.0345
2018-11-07 2018-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 39,535 22,518 132.33 706 136.91 0.0415
2018-08-02 2018-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 17,017 17,017 298 0.0199
2018-05-11 2018-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 0 -42,233 -100.00 0 -100.00
2018-02-07 2017-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 42,233 364 0.87 695 -1.14 0.0535
2017-11-06 2017-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 41,869 5,159 14.05 703 16.20 0.0580
2017-08-02 2017-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 36,710 789 2.20 605 7.27 0.0568
2017-04-24 2017-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 35,921 4,554 14.52 564 25.61 0.0546
2017-01-23 2016-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 31,367 -478 -1.50 449 -3.44 0.0491
2016-11-07 2016-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 31,845 4,698 17.31 465 21.41 0.0551
2016-07-22 2016-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 27,147 -5,158 -15.97 383 -12.95 0.0499
2016-04-18 2016-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 32,305 1,283 4.14 440 6.28 0.0601
2016-01-20 2015-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 31,022 1,044 3.48 414 3.76 0.0580
2015-11-02 2015-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 29,978 -118 -0.39 399 -8.49 0.0632
2015-07-14 2015-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 30,096 -2,989 -9.03 436 -16.48 0.0602
2015-04-23 2015-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 33,085 2,562 8.39 522 7.63 0.0692
2015-02-13 2014-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 30,523 30,523 485 0.0641
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.