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Icon PLC

ICLR
Exchange
Nasdaq
Industry
Services-Commercial Physical & Biological Research
SEC CIK
0001060955

In the last 90 days, Icon PLC insiders filed 0 open-market purchases and 12 sales; 423 institutions reported holding it in 13F filings for Q2 2026, worth $13.9B in total; superinvestors Harris Associates (Oakmark) and Greenhaven Associates hold it.

13F holders, Q4 2023

Institutional positions in Icon PLC as of Dec 31, 2023. 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
603
+57 vs. Q3 2023
Shares held
79.2M
−1.25M (−1.6%) vs. Q3 2023
Total value
$22.1B
+$2.36B (+12.0%) vs. Q3 2023
New holders
105
186 more added
Sold out
48
224 more reduced

10 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2023: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ICLR 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 holdersQ4 2023: 603 institutions
Q1 2021: 426 institutionsQ2 2021: 449 institutionsQ3 2021: 510 institutionsQ4 2021: 548 institutionsQ1 2022: 512 institutionsQ2 2022: 510 institutionsQ3 2022: 488 institutionsQ4 2022: 531 institutionsQ1 2023: 538 institutionsQ2 2023: 534 institutionsQ3 2023: 556 institutionsQ4 2023: 603 institutionsQ1 2024: 648 institutionsQ2 2024: 676 institutionsQ3 2024: 662 institutionsQ4 2024: 596 institutionsQ1 2025: 562 institutionsQ2 2025: 489 institutionsQ3 2025: 513 institutionsQ4 2025: 514 institutionsQ1 2026: 420 institutionsQ2 2026: 423 institutions
Value heldQ4 2023: $22.1B
Q1 2021: $10.0BQ2 2021: $12.3BQ3 2021: $19.3BQ4 2021: $22.7BQ1 2022: $17.8BQ2 2022: $16.2BQ3 2022: $13.9BQ4 2022: $14.5BQ1 2023: $16.1BQ2 2023: $19.9BQ3 2023: $19.7BQ4 2023: $22.1BQ1 2024: $26.1BQ2 2024: $24.3BQ3 2024: $22.4BQ4 2024: $16.0BQ1 2025: $13.3BQ2 2025: $11.2BQ3 2025: $13.0BQ4 2025: $14.1BQ1 2026: $8.74BQ2 2026: $13.9B
Institutions holding ICLR and their total value by quarter
QuarterHoldersValue
Q2 2026423$13.9B
Q1 2026420$8.74B
Q4 2025514$14.1B
Q3 2025513$13.0B
Q2 2025489$11.2B
Q1 2025562$13.3B
Q4 2024596$16.0B
Q3 2024662$22.4B
Q2 2024676$24.3B
Q1 2024648$26.1B
Q4 2023603$22.1B
Q3 2023556$19.7B
Q2 2023534$19.9B
Q1 2023538$16.1B
Q4 2022531$14.5B
Q3 2022488$13.9B
Q2 2022510$16.2B
Q1 2022512$17.8B
Q4 2021548$22.7B
Q3 2021510$19.3B
Q2 2021449$12.3B
Q1 2021426$10.0B

Institutions, Q4 2023

Shares, value and share of portfolio for each institution holding Icon PLC; share changes are against Q3 2023.

Institutions holding ICLR in Q4 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Putnam Investments LLC78,071$22.1M0.03%−814−1.0%Reduced
Kornitzer Capital Management Inc74,820$21.2M0.41%+25,160+50.7%Added
State Board of Administration of Florida Retirement System73,950$20.9M0.04%+11,700+18.8%Added
Van Eck Associates Corp73,703$20.9M0.04%−8,069−9.9%Reduced
Farmers & Merchants Investments Inc73,337$20.8M0.76%+384+0.5%Added
Walter Public Investments Inc.72,663$20.6M4.32%00.0%Unchanged
Palisade Capital Management LLC72,366$20.5M0.54%−6,119−7.8%Reduced
State of Michigan Retirement System69,670$19.7M0.12%00.0%Unchanged
Stifel Financial Corp68,920$19.5M0.02%−3,524−4.9%Reduced
Thrivent Financial for Lutherans68,071$19.3M0.04%+11,793+21.0%Added
Epoch Investment Partners, Inc.63,622$18.0M0.08%+7,764+13.9%Added
Federated Hermes, Inc.59,583$16.9M0.04%−901−1.5%Reduced
LVM Capital Management Ltd58,472$16.6M2.12%+1,883+3.3%Added
Peregrine Capital Management LLC57,592$16.3M0.49%−18,288−24.1%Reduced
Hantz Financial Services, Inc.57,003$16.1M0.35%−2,760−4.6%Reduced
Creative Planning56,124$15.9M0.03%−54,015−49.0%Reduced
Blair William & Co55,600$15.7M0.05%+3,019+5.7%Added
Martingale Asset Management L P54,614$15.5M0.32%+15,282+38.9%Added
AXA S.A.54,193$15.3M0.05%−6,513−10.7%Reduced
Globeflex Capital L P53,006$15.0M1.53%00.0%Unchanged
Allspring Global Investments Holdings, LLC52,377$14.8M0.02%−107,899−67.3%Reduced
Premier Fund Managers Ltd50,604$14.5M0.62%−832−1.6%Reduced
Advisor Group Holdings, Inc.51,051$14.5M0.03%−16,253−24.1%Reduced
Polar Capital Holdings Plc50,516$14.3M0.10%−7,044−12.2%Reduced
Todd Asset Management LLC49,620$14.0M0.31%−24,339−32.9%Reduced
Barlow Wealth Partners, Inc.47,127$13.3M1.90%+47,127New
BNP Paribas Arbitrage, SA46,636$13.2M0.02%−3,325−6.7%Reduced
FineMark National Bank & Trust46,129$13.1M0.53%−567−1.2%Reduced
Citigroup Inc45,738$12.9M0.02%+4,270+10.3%Added
Summit Creek Advisors LLC44,916$12.7M1.70%−31,198−41.0%Reduced
Brant Point Investment Management LLC43,923$12.4M2.97%−4,487−9.3%Reduced
Weiss Multi-Strategy Advisers LLC43,506$12.3M0.31%+43,506New
Vident Advisory, LLC43,432$12.3M0.31%+1,883+4.5%Added
Financiere des Professionnels - Fonds d,investissement inc.42,103$11.9M1.05%−10,929−20.6%Reduced
Magnetar Financial LLC41,658$11.8M0.30%−2,173−5.0%Reduced
UBS Group AG41,633$11.8M0.00%+20,850+100.3%Added
Treasurer of the State of North Carolina41,078$11.6M0.06%+1,100+2.8%Added
Truist Financial Corp39,904$11.3M0.02%−127−0.3%Reduced
Russell Investments Group, Ltd.39,204$11.1M0.02%+15,927+68.4%Added
Bank Julius Baer & Co. Ltd, Zurich38,442$10.9M0.05%+38,442New
National Bank of Canada39,161$10.7M0.02%−17,549−30.9%Reduced
Voya Investment Management LLC36,434$10.3M0.01%−7,355−16.8%Reduced
Walleye Capital LLC35,217$9.97M0.14%+35,217New
Running Oak Capital LLC35,149$9.95M1.96%+4,287+13.9%Added
Colony Group, LLC35,069$9.93M0.13%+35,069New
Integral Health Asset Management, LLC35,000$9.91M1.43%+35,000New
Deutsche Bank AG34,027$9.63M0.00%+3,052+9.9%Added
M&T Bank Corp33,253$9.41M0.03%−680−2.0%Reduced
Captrust Financial Advisors31,945$9.04M0.03%+814+2.6%Added
Retirement Systems of Alabama31,900$9.03M0.04%00.0%Unchanged
Macquarie Group Ltd31,641$8.96M0.01%−7,493−19.1%Reduced
Silvercrest Asset Management Group LLC31,444$8.90M0.06%+571+1.8%Added
Royal London Asset Management Ltd31,428$8.90M0.03%+835+2.7%Added
Holocene Advisors, LP31,378$8.88M0.03%−332,189−91.4%Reduced
Charles Schwab Investment Management Inc31,252$8.85M0.00%+229+0.7%Added
Fayez Sarofim & Co31,540$8.78M0.03%−300−0.9%Reduced
Strategic Global Advisors, LLC31,026$8.78M2.01%+12,052+63.5%Added
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main29,507$8.35M0.01%+24,914+542.4%Added
HighTower Advisors, LLC29,229$8.28M0.01%+5,506+23.2%Added
Marks Group Wealth Management, Inc29,252$8.28M0.94%−426−1.4%Reduced
Sumitomo Mitsui Trust Holdings, Inc.29,234$8.28M0.01%00.0%Unchanged
Bank of Montreal28,670$8.22M0.00%−12,604−30.5%Reduced
Engineers Gate Manager LP28,783$8.15M0.23%+20,249+237.3%Added
Oppenheimer Asset Management Inc.28,576$8.09M0.11%−643−2.2%Reduced
US Bancorp28,352$8.03M0.01%+13,579+91.9%Added
Azimuth Capital Investment Management LLC27,281$7.72M0.35%−5,571−17.0%Reduced
Brinker Capital Investments, LLC28,082$7.66M0.09%−2,225−7.3%Reduced
Orion Portfolio Solutions, LLC28,082$7.66M0.09%−2,225−7.3%Reduced
Teachers Retirement System of the State of Kentucky25,900$7.33M0.07%−9,400−26.6%Reduced
Gateway Investment Advisers LLC25,886$7.33M0.09%00.0%Unchanged
DekaBank Deutsche Girozentrale25,734$7.32M0.02%+7,770+43.3%Added
Fred Alger Management, LLC25,832$7.31M0.04%−326−1.2%Reduced
Trillium Asset Management, LLC25,678$7.27M0.20%+3,480+15.7%Added
Alerus Financial NA25,509$7.22M0.59%+25,509New
Renaissance Group LLC24,521$6.94M0.29%−584−2.3%Reduced
Picton Mahoney Asset Management23,370$6.62M0.31%+4,068+21.1%Added
TownSquare Capital, LLC21,996$6.23M0.11%−217−1.0%Reduced
Henry James International Management, Inc.21,340$6.04M2.27%−268−1.2%Reduced
Manufacturers Life Insurance Company, The21,124$5.98M0.00%+748+3.7%Added
Cetera Advisor Networks LLC20,290$5.74M0.03%−67−0.3%Reduced
McKinley Capital Management LLC /Delaware20,086$5.69M0.73%00.0%Unchanged
Welch & Forbes LLC20,023$5.67M0.09%00.0%Unchanged
Bleakley Financial Group, LLC19,417$5.50M0.17%+11,811+155.3%Added
Sawtooth Solutions, LLC19,408$5.49M0.15%+11,802+155.2%Added
Equitable Trust Co19,060$5.40M0.41%−447−2.3%Reduced
Polen Capital Management LLC1,192,170$5.33M0.01%−30,791−2.5%Reduced
Campbell & CO Investment Adviser LLC18,748$5.31M0.48%+18,748New
Banque Pictet & Cie SA18,637$5.28M0.06%−16,565−47.1%Reduced
Envestnet Portfolio Solutions, Inc.18,370$5.20M0.02%+623+3.5%Added
Amica Mutual Insurance Co18,133$5.13M0.55%−3,670−16.8%Reduced
Handelsbanken Fonder AB17,964$5.08M0.02%+734+4.3%Added
Romano Brothers and Company17,842$5.05M0.75%−750−4.0%Reduced
Brasada Capital Management, LP16,763$4.75M0.94%+2,961+21.5%Added
Janney Montgomery Scott LLC16,747$4.74M0.02%−624−3.6%Reduced
Mount Yale Investment Advisors, LLC16,625$4.71M0.45%−353−2.1%Reduced
Westover Capital Advisors, LLC16,053$4.54M1.48%+68+0.4%Added
MML Investors Services, LLC15,935$4.51M0.02%+4,517+39.6%Added
Burney Co15,622$4.42M0.19%−841−5.1%Reduced
Osborne Partners Capital Management, LLC15,612$4.42M0.29%+15,612New
Eversept Partners, LP15,417$4.36M0.43%−5,581−26.6%Reduced