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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 2024

Institutional positions in Icon PLC as of Dec 31, 2024. 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
596
−59 vs. Q3 2024
Shares held
76.2M
−2.30M (−2.9%) vs. Q3 2024
Total value
$16.0B
−$6.33B (−28.4%) vs. Q3 2024
New holders
93
188 more added
Sold out
152
253 more reduced

7 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2024: 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 2024: 596 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 2024: $16.0B
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 2024

Shares, value and share of portfolio for each institution holding Icon PLC; share changes are against Q3 2024.

Institutions holding ICLR in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Walleye Capital LLC104,371$21.9M0.21%−29,635−22.1%Reduced
Clark Capital Management Group, Inc.103,318$21.7M0.15%−56,858−35.5%Reduced
LPL Financial LLC103,483$21.7M0.01%+2,522+2.5%Added
Jane Street Group, LLC103,017$21.6M0.03%−95,034−48.0%Reduced
Bank of New York Mellon Corp102,463$21.5M0.00%−9,373−8.4%Reduced
Clarkston Capital Partners, LLC100,055$21.0M0.40%+100,055New
Swedbank AB99,800$20.9M0.03%00.0%Unchanged
Kornitzer Capital Management Inc97,102$20.4M0.40%+28,050+40.6%Added
Walter Public Investments Inc.96,954$20.3M3.64%+22,269+29.8%Added
AXA S.A.95,870$20.1M0.06%+31,465+48.9%Added
Sands Capital Management, LLC94,700$19.9M0.06%+94,700New
Marshall Wace, LLP88,739$18.6M0.02%+88,739New
Calamos Advisors LLC86,789$18.2M0.08%+9,228+11.9%Added
Citigroup Inc86,519$18.1M0.02%−135,386−61.0%Reduced
Zuckerman Investment Group, LLC92,140$18.0M1.73%+92,140New
New York State Common Retirement Fund85,362$17.9M0.02%−62,023−42.1%Reduced
Prosight Management, LP85,000$17.8M4.99%+85,000New
Geode Capital Management, LLC84,338$17.7M0.00%+914+1.1%Added
Stifel Financial Corp83,658$17.5M0.02%+13,637+19.5%Added
Farmers & Merchants Investments Inc83,511$17.5M0.55%+1,431+1.7%Added
American Capital Management Inc81,279$17.0M0.63%−96,241−54.2%Reduced
Bank Julius Baer & Co. Ltd, Zurich73,638$16.3M0.05%+38,408+109.0%Added
Distillate Capital Partners LLC74,417$15.6M0.77%+20,262+37.4%Added
Loomis Sayles & Co L P70,007$14.7M0.02%+3,106+4.6%Added
State of Michigan Retirement System69,670$14.6M0.08%00.0%Unchanged
FACT Capital, LP69,421$14.6M6.35%−10,984−13.7%Reduced
Van Eck Associates Corp68,780$14.4M0.02%−1,534−2.2%Reduced
Cambiar Investors LLC66,673$14.0M0.55%+66,673New
T. Rowe Price Investment Management, Inc.66,209$13.9M0.01%+66,209New
Motley Fool Asset Management LLC65,461$13.7M0.72%+13,032+24.9%Added
Palisade Capital Management LLC64,853$13.6M0.36%−940−1.4%Reduced
Motley Fool Wealth Management, LLC64,038$13.3M0.69%+1,466+2.3%Added
Hardman Johnston Global Advisors LLC60,306$12.6M0.52%+3,952+7.0%Added
Barclays PLC59,728$12.5M0.01%+43,961+278.8%Added
LVM Capital Management Ltd58,717$12.3M1.32%−138−0.2%Reduced
Peregrine Capital Management LLC57,471$12.1M0.36%−631−1.1%Reduced
Running Oak Capital LLC54,522$11.4M1.49%+11,778+27.6%Added
Premier Fund Managers Ltd52,359$11.0M0.39%+7,745+17.4%Added
Foyston, Gordon, & Payne Inc51,713$10.8M2.87%+11,089+27.3%Added
Globeflex Capital L P48,363$10.1M0.86%−4,321−8.2%Reduced
Holocene Advisors, LP47,946$10.1M0.03%+47,946New
Strategic Global Advisors, LLC47,741$10.0M1.83%+4,202+9.7%Added
FineMark National Bank & Trust47,494$9.96M0.35%−109−0.2%Reduced
Nuveen Asset Management, LLC44,982$9.43M0.00%−630−1.4%Reduced
Barlow Wealth Partners, Inc.46,359$9.25M1.17%−3,978−7.9%Reduced
Hyperion Capital Advisors LP43,925$9.21M4.73%+43,925New
Colony Group, LLC41,591$8.72M0.02%+2,476+6.3%Added
Sixth Street Partners Management Company, L.P.41,000$8.60M1.11%+8,000+24.2%Added
Liontrust Investment Partners LLP39,328$8.25M0.12%−80,400−67.2%Reduced
Pathstone Holdings, LLC39,099$8.20M0.04%−906−2.3%Reduced
Osborne Partners Capital Management, LLC38,781$8.13M0.47%+22,004+131.2%Added
Trillium Asset Management, LLC38,247$8.02M0.21%+12,784+50.2%Added
DnB Asset Management AS38,238$8.02M0.03%+16,476+75.7%Added
TT International Asset Management LTD36,118$7.66M1.11%+10,142+39.0%Added
Financiere des Professionnels - Fonds d,investissement inc.36,483$7.65M0.53%+2,340+6.9%Added
Captrust Financial Advisors35,301$7.40M0.02%+701+2.0%Added
Capital Fund Management S.A.35,227$7.39M0.07%+35,227New
Deutsche Bank AG34,935$7.33M0.00%+5,672+19.4%Added
Royal London Asset Management Ltd34,520$7.24M0.02%+1,319+4.0%Added
Edmond de Rothschild Holding S.A.33,510$7.03M0.12%+33,510New
National Bank of Canada32,644$6.85M0.01%−8,095−19.9%Reduced
US Bancorp32,547$6.83M0.01%−5,787−15.1%Reduced
Marks Group Wealth Management, Inc32,127$6.74M0.66%+548+1.7%Added
Silvercrest Asset Management Group LLC32,079$6.73M0.04%+9,191+40.2%Added
Montanaro Asset Management Ltd31,700$6.65M1.37%−42,650−57.4%Reduced
DekaBank Deutsche Girozentrale30,885$6.44M0.01%00.0%Unchanged
Hantz Financial Services, Inc.30,534$6.40M0.11%−18,804−38.1%Reduced
CenterBook Partners LP29,016$6.08M0.36%+29,016New
National Philanthropic Trust28,654$6.01M0.09%+28,654New
M&T Bank Corp28,086$5.89M0.02%−1,178−4.0%Reduced
Blair William & Co28,074$5.89M0.02%−95,442−77.3%Reduced
Susquehanna International Group, LLP27,838$5.84M0.01%−53,132−65.6%Reduced
Man Group plc26,716$5.60M0.02%−17,648−39.8%Reduced
Retirement Systems of Alabama26,653$5.59M0.02%00.0%Unchanged
Cetera Investment Advisers26,320$5.52M0.01%−2,077−7.3%Reduced
Robeco Schweiz AG26,072$5.47M0.12%−42,667−62.1%Reduced
Standard Life Aberdeen plc26,069$5.47M0.01%−104,496−80.0%Reduced
Kennedy Capital Management, Inc.25,628$5.37M0.12%+9,858+62.5%Added
Sumitomo Mitsui Trust Holdings, Inc.25,623$5.37M0.00%−3,101−10.8%Reduced
Gateway Investment Advisers LLC25,009$5.24M0.06%+1,016+4.2%Added
Quadrature Capital Ltd24,916$5.23M0.10%+23,476+1,630.3%Added
Russell Investments Group, Ltd.24,578$5.15M0.01%−262−1.1%Reduced
UBS Asset Management Americas Inc24,519$5.14M0.00%−4,150−14.5%Reduced
Napean Trading & Investment Co (Singapore) PTE Ltd24,203$5.08M1.26%−17,497−42.0%Reduced
Armor Advisors, L.L.C.24,100$5.05M6.16%+24,100New
Quantitative Investment Management, LLC23,757$4.98M0.37%+23,757New
TD Asset Management Inc23,587$4.95M0.00%−170,813−87.9%Reduced
HighTower Advisors, LLC23,464$4.92M0.01%−1,880−7.4%Reduced
Jump Financial, LLC23,217$4.87M0.10%−1,206−4.9%Reduced
Daiwa Securities Group Inc.23,110$4.85M0.02%+19,560+551.0%Added
Mizuho Markets Americas LLC22,692$4.76M0.09%+22,692New
Sterling Capital Management LLC21,828$4.58M0.06%+874+4.2%Added
Hunter Perkins Capital Management, LLC21,539$4.52M0.95%+21,539New
Romano Brothers and Company21,135$4.43M0.56%−2,082−9.0%Reduced
Artemis Investment Management LLP21,005$4.40M0.06%−47,221−69.2%Reduced
Janney Montgomery Scott LLC20,906$4.38M0.01%+3,408+19.5%Added
Brinker Capital Investments, LLC20,706$4.34M0.04%−7,932−27.7%Reduced
Orion Portfolio Solutions, LLC20,706$4.34M0.04%−7,932−27.7%Reduced
Handelsbanken Fonder AB20,676$4.34M0.02%−1,033−4.8%Reduced
Bank of Montreal20,568$4.31M0.00%−78,972−79.3%Reduced