PIMCO Corporate & Income Opportunity Fund
US ˙ NYSE ˙ US72201B1017

SecurityPTY / PIMCO Corporate & Income Opportunity Fund
InstitutionNwam Llc
Latest Disclosed Ownership43,816 shares
Latest Disclosed Value $ 528,426
Nwam Llc reports 3.79% increase in ownership of PTY / PIMCO Corporate & Income Opportunity Fund

On May 4, 2026 - Nwam Llc filed a 13F-HR form disclosing ownership of 43,816 shares of PIMCO Corporate & Income Opportunity Fund (US:PTY) valued at $528,421 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 42,215 shares of PIMCO Corporate & Income Opportunity Fund. This represents a change in shares of 3.79% during the quarter. The current value of the position is $518,781 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)
2026-05-04 2026-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 43,816 1,601 3.79 528 -4.17 0.0304
2026-02-04 2025-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 42,215 1,252 3.06 552 1.47 0.0308
2026-02-04 2025-09-30 13F/A-1 PIMCO CORPORATE & INCOME OPP COM 72201B101 40,963 -1,995 -4.64 544 -9.20 0.0295
2025-10-28 2025-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 39,791 -1,995 551 0.0387
2026-02-04 2025-06-30 13F/A-1 PIMCO CORPORATE & INCOME OPP COM 72201B101 42,958 5,453 14.54 599 10.33 0.0348
2025-08-07 2025-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 41,786 4,281 582 0.0473
2025-05-05 2025-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 37,505 -1,083 -2.81 542 -2.17 0.0466
2025-02-05 2024-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 38,588 90 0.23 555 0.18 0.0343
2024-11-12 2024-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 38,498 554 1.46 554 2.03 0.0338
2024-07-24 2024-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 37,944 -278 -0.73 543 -0.91 0.1595
2024-05-09 2024-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 38,222 -3,871 -9.20 547 -1.80 0.0442
2024-02-14 2023-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 42,093 8,315 24.62 557 26.30 0.0448
2023-11-01 2023-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 33,778 -8,594 -20.28 441 -25.63 0.0448
2023-08-10 2023-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 42,372 4,822 12.84 593 26.71 0.0487
2023-05-12 2023-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 37,550 181 0.48 468 4.46 0.0475
2023-02-08 2022-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 37,369 1,619 4.53 449 6.67 0.0398
2022-11-14 2022-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 35,750 7,281 25.58 420 13.51 0.0401
2022-08-10 2022-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 28,469 1,819 6.83 370 -9.54 0.0342
2022-05-12 2022-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 26,650 -819 -2.98 409 -9.91 0.0314
2022-02-10 2021-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 27,469 -30,319 -52.47 454 -57.05 0.0359
2021-11-03 2021-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 57,788 28,014 94.09 1,057 79.46 0.0958
2021-08-04 2021-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 29,774 -3,069 -9.34 589 -1.83 0.0546
2021-04-23 2021-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 32,843 1,953 6.32 600 8.89 0.0597
2021-01-22 2020-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 30,890 640 2.12 551 12.91 0.0629
2020-10-16 2020-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 30,250 2,700 9.80 488 14.29 0.0805
2020-07-21 2020-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 27,550 2,500 9.98 427 32.20 0.0598
2020-04-16 2020-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 25,050 3,800 17.88 323 -20.05 0.0087
2020-01-23 2019-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 21,250 700 3.41 404 8.31 0.0699
2019-10-15 2019-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,550 -500 -2.38 373 -2.36 0.0698
2019-07-18 2019-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 21,050 1,000 4.99 382 8.83 0.0760
2019-04-17 2019-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,050 0 0.00 351 13.96 0.0757
2019-01-30 2018-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,050 0 0.00 308 -13.97 0.0791
2018-10-09 2018-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,050 0 0.00 358 1.99 0.0805
2018-07-25 2018-06-30 13F/A-1 PIMCO CORPORATE & INCOME OPP COM 72201B101 20,050 0 0.00 351 3.54 0.0831
2018-07-16 2018-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,050 0 351 0.0287
2018-04-16 2018-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,050 0 0.00 339 2.73 0.0856
2018-02-07 2017-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,050 0 0.00 330 -1.79 0.0836
2017-11-01 2017-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,050 0 0.00 336 1.82 0.0873
2017-07-27 2017-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,050 0 0.00 330 4.76 0.0574
2017-05-01 2017-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,050 282 1.43 315 11.31 0.0961
2017-02-02 2016-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 19,768 -650 -3.18 283 -5.03 0.0939
2016-10-26 2016-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,418 0 0.00 298 3.47 0.0226
2016-08-04 2016-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 20,418 1,200 6.24 288 9.92 0.1131
2016-05-16 2016-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 19,218 1,018 5.59 262 7.82 0.1038
2016-02-12 2015-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 18,200 18,200 -4.21 243 -19.00 0.0991
2015-11-17 2015-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 0 -19,000 -100.00 0 -100.00
2015-10-15 2015-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 19,000 0 0.00 275 -8.33 0.1150
2016-09-08 2015-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 19,000 100 0.53 300 -0.33 0.1283
2016-09-08 2014-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 18,900 1,285 7.29 301 0.00 0.1314
2016-09-08 2014-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 17,615 1,673 10.49 301 0.00 0.1072
2016-09-08 2014-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 15,942 -698 -4.19 301 0.00 0.0936
2016-09-08 2014-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 16,640 -660 -3.82 301 0.67 0.1035
2016-09-08 2013-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 17,300 -1,471 -7.84 299 -11.80 0.1587
2016-09-08 2013-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 18,771 1,440 8.31 339 0.00 0.1647
2016-09-08 2013-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 17,331 1,587 10.08 339 0.00 0.1714
2016-09-08 2013-03-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 15,744 2,714 20.83 339 33.99 0.1666
2016-09-08 2012-12-31 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 13,030 447 3.55 253 0.00 0.1070
2016-09-08 2012-09-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 12,583 -920 -6.81 253 0.00 0.1063
2016-09-08 2012-06-30 13F PIMCO CORPORATE & INCOME OPP COM 72201B101 13,503 13,503 253 0.1172
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.