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PIMCO Corporate & Income Opportunity Fund

PTY
Exchange
NYSE
SEC CIK
0001190935

No open-market purchases or sales by PIMCO Corporate & Income Opportunity Fund insiders were filed in the last 90 days; 222 institutions reported holding it in 13F filings for Q2 2026, worth $421.1M in total; no superinvestor holds it.

13F holders, Q1 2026

Institutional positions in PIMCO Corporate & Income Opportunity Fund as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
222
+11 vs. Q4 2025
Shares held
33.5M
+1.51M (+4.7%) vs. Q4 2025
Total value
$405.5M
−$8.59M (−2.1%) vs. Q4 2025
New holders
40
83 more added
Sold out
29
52 more reduced

5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting PTY on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 222 institutions
Q1 2021: 126 institutionsQ2 2021: 132 institutionsQ3 2021: 138 institutionsQ4 2021: 148 institutionsQ1 2022: 142 institutionsQ2 2022: 148 institutionsQ3 2022: 142 institutionsQ4 2022: 155 institutionsQ1 2023: 145 institutionsQ2 2023: 151 institutionsQ3 2023: 159 institutionsQ4 2023: 169 institutionsQ1 2024: 157 institutionsQ2 2024: 166 institutionsQ3 2024: 181 institutionsQ4 2024: 194 institutionsQ1 2025: 192 institutionsQ2 2025: 204 institutionsQ3 2025: 203 institutionsQ4 2025: 216 institutionsQ1 2026: 222 institutionsQ2 2026: 222 institutions
Value heldQ1 2026: $405.5M
Q1 2021: $160.3MQ2 2021: $174.3MQ3 2021: $187.5MQ4 2021: $164.4MQ1 2022: $165.6MQ2 2022: $133.3MQ3 2022: $122.3MQ4 2022: $146.1MQ1 2023: $189.4MQ2 2023: $229.4MQ3 2023: $219.0MQ4 2023: $215.1MQ1 2024: $252.4MQ2 2024: $276.0MQ3 2024: $293.1MQ4 2024: $317.9MQ1 2025: $337.1MQ2 2025: $368.6MQ3 2025: $402.8MQ4 2025: $415.5MQ1 2026: $405.5MQ2 2026: $421.1M
Institutions holding PTY and their total value by quarter
QuarterHoldersValue
Q2 2026222$421.1M
Q1 2026222$405.5M
Q4 2025216$415.5M
Q3 2025203$402.8M
Q2 2025204$368.6M
Q1 2025192$337.1M
Q4 2024194$317.9M
Q3 2024181$293.1M
Q2 2024166$276.0M
Q1 2024157$252.4M
Q4 2023169$215.1M
Q3 2023159$219.0M
Q2 2023151$229.4M
Q1 2023145$189.4M
Q4 2022155$146.1M
Q3 2022142$122.3M
Q2 2022148$133.3M
Q1 2022142$165.6M
Q4 2021148$164.4M
Q3 2021138$187.5M
Q2 2021132$174.3M
Q1 2021126$160.3M

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding PIMCO Corporate & Income Opportunity Fund; share changes are against Q4 2025.

Institutions holding PTY in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Pensionmark Financial Group, LLC31,792$383.4K0.01%+37+0.1%Added
Stratos Wealth Partners, LTD.31,140$375.6K0.00%+31,140New
Lido Advisors, LLC30,952$373.5K0.00%+326+1.1%Added
AE Wealth Management LLC30,604$369.1K0.00%−56,743−65.0%Reduced
Red Door Wealth Management, LLC30,118$363.2K0.04%00.0%Unchanged
Collaborative Wealth Managment Inc.29,828$359.7K0.17%00.0%Unchanged
Fifth Third Bancorp29,815$359.6K0.00%+29,815New
Western Wealth Management, LLC29,118$351.2K0.01%−1,253−4.1%Reduced
Argyle Capital Partners, LLC26,539$320.1K0.23%00.0%Unchanged
National Asset Management, Inc.26,532$310.2K0.02%−713−2.6%Reduced
CDKV Holdings LLC25,404$306.4K0.27%+14+0.1%Added
Beacon Pointe Advisors, LLC25,067$302.3K0.00%+13,252+112.2%Added
Belpointe Asset Management LLC25,000$301.5K0.01%−4,069−14.0%Reduced
Centaurus Financial, Inc.24,977$301.0K0.01%+1,898+8.2%Added
Park Avenue Securities LLC24,429$295.0K0.00%00.0%Unchanged
Northern Trust Corp24,357$293.7K0.00%00.0%Unchanged
Taylor & Morgan Wealth Management, LLC23,656$285.3K0.16%+618+2.7%Added
Kingsview Wealth Management, LLC23,066$278.2K0.00%−6,288−21.4%Reduced
Wealth Care LLC23,062$278.1K0.25%+23,062New
Thrivent Financial for Lutherans22,656$273.0K0.00%−159−0.7%Reduced
Iams Wealth Management, LLC22,000$265.3K0.09%00.0%Unchanged
Creative Planning21,437$258.5K0.00%−2,904−11.9%Reduced
Patron Partners Advisors, LLC21,381$257.9K0.11%+90+0.4%Added
Sym Financial Corp20,134$242.8K0.02%+881+4.6%Added
Farther Finance Advisors, LLC19,576$238.8K0.00%+6,343+47.9%Added
Madison Wealth Partners, Inc19,622$236.6K0.04%00.0%Unchanged
VestGen Advisors, LLC19,400$234.4K0.01%00.0%Unchanged
Verus Capital Partners, LLC19,235$232.0K0.02%−200−1.0%Reduced
Colony Group, LLC19,077$230.1K0.00%+6,614+53.1%Added
Great Valley Advisor Group, Inc.18,402$221.9K0.00%+452+2.5%Added
Insigneo Advisory Services, LLC18,244$220.0K0.02%+4,742+35.1%Added
Wealth Alliance Advisory Group, LLC17,847$215.2K0.03%00.0%Unchanged
D.A. Davidson & Co.17,834$215.1K0.00%−3,614−16.9%Reduced
Patten & Patten Inc17,469$210.7K0.01%+473+2.8%Added
SRS Capital Advisors, Inc.17,167$207.0K0.01%+17,167New
HighPoint Advisor Group LLC16,960$204.5K0.01%+2,210+15.0%Added
Fulton Breakefield Broenniman LLC16,745$201.9K0.01%00.0%Unchanged
Institute for Wealth Management, LLC.16,736$201.8K0.02%+67+0.4%Added
TPG Advisors LLC15,620$188.4K0.12%−13,194−45.8%Reduced
McAdam, LLC15,316$184.7K0.01%−10.0%Reduced
Allworth Financial LP15,126$182.4K0.00%−29−0.2%Reduced
Wedbush Securities Inc15,012$181.0K0.01%+3,303+28.2%Added
Disciplined Investments, LLC15,000$180.9K0.06%00.0%Unchanged
Rathbone Brothers plc15,000$180.9K0.00%+15,000New
Nomura Holdings Inc14,800$178.5K0.00%−5,000−25.3%Reduced
Boothbay Fund Management, LLC14,694$177.2K0.00%+14,694New
Wharton Business Group, LLC14,643$176.6K0.01%+14,643New
Beacon Financial Advisory LLC14,421$173.9K0.04%+918+6.8%Added
Instrumental Wealth, LLC13,325$160.7K0.10%+33+0.2%Added
BlackRock, Inc.13,160$158.7K0.00%00.0%Unchanged
Scotia Capital Inc.13,146$158.5K0.00%+72+0.6%Added
Avestar Capital, LLC12,000$146.4K0.01%+12,000New
Stephens Inc11,520$138.9K0.00%+1,320+12.9%Added
Two Sigma Securities, LLC11,342$136.8K0.02%−2,722−19.4%Reduced
Level Four Advisory Services, LLC11,134$134.3K0.00%+11,134New
Significant Wealth Partners LLC10,896$131.4K0.16%+10,896New
NBC Securities, Inc.10,828$130.6K0.01%00.0%Unchanged
Integrity Advisory Solutions, LLC10,615$128.0K0.02%+10,615New
CWM, LLC10,608$127.9K0.00%+4,253+66.9%Added
BSW Wealth Partners10,537$127.1K0.02%+10,537New
International Assets Investment Management, LLC10,313$125.8K0.01%+284+2.8%Added
Tableaux LLC10,319$124.4K0.06%+10,319New
United Capital Financial Advisers, LLC10,000$114.2K0.00%−15,688−61.1%Reduced
Osbon Capital Management LLC8,987$108.4K0.09%+8,987New
EverSource Wealth Advisors, LLC8,950$107.9K0.00%00.0%Unchanged
Ameriflex Group, Inc.8,100$97.7K0.05%00.0%Unchanged
The PNC Financial Services Group, Inc.7,886$95.1K0.00%+214+2.8%Added
Harbor Investment Advisory, LLC6,109$73.7K0.01%00.0%Unchanged
Gill Capital Partners, LLC5,662$68.3K0.02%+5,662New
Marshall Investment Management, LLC4,733$57.1K0.03%+4,733New
Spire Wealth Management4,482$54.0K0.00%+10.0%Added
Parallel Advisors, LLC4,452$53.7K0.00%−962−17.8%Reduced
Essential Investment Partners LLC3,850$46.4K0.04%00.0%Unchanged
Sunbelt Securities, Inc.3,600$43.4K0.00%−28,439−88.8%Reduced
Bartlett & Co. Wealth Management LLC3,442$42.2K0.00%−856−19.9%Reduced
Bank of New Hampshire3,425$41.3K0.01%00.0%Unchanged
FNY Investment Advisers, LLC3,200$38.0K0.02%00.0%Unchanged
Hamrick Investment Counsel, llc3,000$36.5K0.02%+3,000New
MAI Capital Management3,000$36.2K0.00%00.0%Unchanged
Rothschild Investment LLC2,694$32.5K0.00%00.0%Unchanged
GHP Investment Advisors, Inc.2,650$32.0K0.00%+2,650New
Versant Capital Management, Inc2,500$30.1K0.00%00.0%Unchanged
Webster Bank, N. A.2,200$26.5K0.00%00.0%Unchanged
Jones Financial Companies LLLP2,000$23.4K0.00%+2,000New
Heritage Wealth Advisors1,920$23.2K0.00%00.0%Unchanged
Eastern Bank1,800$21.7K0.00%00.0%Unchanged
Align Financial, LLC1,750$21.1K0.01%−20,825−92.2%Reduced
Bogart Wealth, LLC1,600$19.3K0.00%00.0%Unchanged
Pinnacle Wealth Planning Services, Inc.1,500$18.1K0.00%00.0%Unchanged
CX Institutional1,515$18.0K0.00%+41+2.8%Added
Princeton Global Asset Management LLC1,336$16.1K0.00%+36+2.8%Added
Mark Sheptoff Financial Planning, LLC1,228$15.0K0.01%+528+75.4%Added
Pin Oak Investment Advisors Inc1,206$15.0K0.01%00.0%Unchanged
Axiom Investment Management LLC1,226$14.8K0.01%+1,226New
CoreCap Advisors, LLC900$10.9K0.00%−400−30.8%Reduced
Crewe Advisors LLC850$10.3K0.00%00.0%Unchanged
Moisand Fitzgerald Tamayo, LLC745$8.98K0.00%00.0%Unchanged
Fortitude Family Office, LLC700$8.44K0.00%00.0%Unchanged
Coston, McIsaac & Partners675$8.00K0.00%+19+2.9%Added
Assetmark, Inc598$7.21K0.00%+500+510.2%Added