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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, Q1 2021

Institutional positions in Icon PLC as of Mar 31, 2021. 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
426
No complete 13F data for Q4 2020
Shares held
51.0M
No complete 13F data for Q4 2020
Total value
$10.0B
No complete 13F data for Q4 2020

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 holdersQ1 2021: 426 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 heldQ1 2021: $10.0B
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, Q1 2021

Shares, value and share of portfolio for each institution holding Icon PLC.

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding ICLR in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Massachusetts Financial Services Co4,683,539$919.7M0.28%––
WCM Investment Management, LLC4,049,678$795.2M2.18%––
Wellington Management Group LLP2,993,445$587.8M0.10%––
Comgest Global Investors S.A.S.2,932,906$575.9M8.82%––
Clearbridge Investments, LLC2,131,431$418.5M0.31%––
Renaissance Technologies LLC2,069,718$406.4M0.51%––
Acadian Asset Management LLC2,051,924$402.9M1.57%––
Pendal Group Limited1,880,861$369.3M3.62%––
Wasatch Advisors Inc1,747,192$343.1M1.54%––
Westfield Capital Management Co LP1,502,334$295.0M1.83%––
Ninety One UK Ltd1,278,159$251.0M0.71%––
Boston Partners1,040,999$204.5M0.27%––
FIL Ltd1,040,453$204.3M0.23%––
Invesco Ltd.939,919$184.6M0.05%––
Principal Financial Group Inc873,508$171.5M0.12%––
American Century Companies Inc798,898$156.9M0.12%––
Polen Capital Management LLC767,550$150.7M0.34%––
American Capital Management Inc724,321$142.2M4.30%––
Neuberger Berman Group LLC675,456$132.0M0.13%––
Bamco Inc655,073$128.6M0.32%––
Earnest Partners LLC587,140$115.3M0.69%––
Alliancebernstein L.P.575,502$113.0M0.05%––
Pensioenfonds Rail & Ov529,853$104.0M2.36%––
Stephens Investment Management Group LLC521,479$102.4M1.49%––
Norges Bank517,644$101.7M0.02%––
Janus Henderson Group PLC508,939$100.0M0.05%––
William Blair Investment Management, LLC447,815$87.9M0.28%––
Bank of America Corp423,964$83.3M0.01%––
Baird Financial Group, Inc.422,641$83.0M0.23%––
Lazard Asset Management LLC371,589$73.0M0.09%––
Putnam Investments LLC349,160$68.6M0.11%––
Brown Capital Management LLC332,789$65.3M0.49%––
Bank of Montreal327,431$65.0M0.05%––
D. E. Shaw & Co., Inc.315,684$62.0M0.08%––
Northern Trust Corp314,569$61.8M0.01%––
New York State Common Retirement Fund310,731$61.0M0.07%––
Palisade Capital Management LLC308,877$60.7M1.42%––
Two Sigma Investments, LP253,024$49.7M0.15%––
Montanaro Asset Management Ltd236,650$46.5M6.84%––
Nuveen Asset Management, LLC222,102$43.6M0.01%––
Loomis Sayles & Co L P219,478$43.1M0.06%––
Morgan Stanley216,670$42.5M0.01%––
Envestnet Asset Management Inc215,132$42.2M0.03%––
SEI Investments Co213,678$42.0M0.11%––
CIBC Private Wealth Group, LLC210,985$41.4M0.10%––
Two Sigma Advisers, LP205,330$40.3M0.11%––
Bank of New York Mellon Corp192,885$37.9M0.01%––
Clark Capital Management Group, Inc.185,973$36.5M0.56%––
Millennium Management LLC170,651$33.5M0.05%––
Federated Hermes, Inc.148,099$29.1M0.06%––
Standard Life Aberdeen plc131,033$25.8M0.06%––
Ninety One North America, Inc.128,955$25.3M1.46%––
BlackRock Inc.126,885$24.9M0.00%––
California Public Employees Retirement System126,430$24.8M0.02%––
Summit Creek Advisors LLC125,594$24.7M2.94%––
Wells Fargo & Company121,532$23.9M0.01%––
Geode Capital Management, LLC119,448$23.5M0.00%––
Nordea Investment Management AB119,026$23.3M0.03%––
Kornitzer Capital Management Inc115,506$22.7M0.36%––
Raymond James & Associates114,649$22.5M0.02%––
Polar Capital Holdings Plc107,942$21.2M0.13%––
Macquarie Group Ltd106,775$21.0M0.03%––
Peregrine Capital Management LLC105,405$20.7M0.38%––
Todd Asset Management LLC101,357$19.9M0.47%––
Citadel Advisors LLC96,514$19.0M0.02%––
State of Tennessee, Treasury Department94,897$18.6M0.08%––
Weiss Multi-Strategy Advisers LLC92,915$18.2M0.41%––
Victory Capital Management Inc92,811$18.2M0.02%––
Russell Investments Group, Ltd.84,157$16.6M0.03%––
Parametric Portfolio Associates LLC81,057$15.9M0.01%––
Tygh Capital Management, Inc.80,066$15.7M2.22%––
McKinley Capital Management LLC /Delaware79,790$15.7M1.18%––
FMR LLC74,994$14.7M0.00%––
Canada Pension Plan Investment Board74,052$14.5M0.02%––
Legal & General Group Plc72,943$14.3M0.01%––
State Street Corp70,881$13.9M0.00%––
PFM Health Sciences, LP65,863$12.9M0.45%––
Globeflex Capital L P65,610$12.9M2.35%––
Teachers Retirement System of the State of Kentucky65,276$12.8M0.13%––
Healthcare of Ontario Pension Plan Trust Fund59,000$11.6M0.03%––
Natixis Advisors, L.P.58,483$11.5M0.06%––
LVM Capital Management Ltd57,964$11.4M1.85%––
Renaissance Group LLC56,555$11.1M0.47%––
Citigroup Inc55,440$10.9M0.01%––
Motley Fool Wealth Management, LLC53,595$10.5M0.47%––
Stifel Financial Corp51,883$10.2M0.02%––
Nicholas Company, Inc.51,430$10.1M0.19%––
Ativo Capital Management LLC50,640$9.94M4.22%––
Hantz Financial Services, Inc.50,597$9.94M0.41%––
Comerica Bank45,268$9.86M0.06%––
AXA S.A.49,781$9.78M0.03%––
Premier Fund Managers Ltd49,566$9.76M0.38%––
Silvercrest Asset Management Group LLC49,623$9.74M0.07%––
JPMorgan Chase & Co48,621$9.55M0.00%––
Beaconlight Capital, LLC48,073$9.44M3.76%––
Royal Bank of Canada47,749$9.38M0.00%––
Sio Capital Management, LLC47,500$9.33M1.95%––
Ameriprise Financial Inc46,763$9.18M0.00%––
State of Wisconsin Investment Board45,949$9.02M0.02%––
Avalon Investment & Advisory45,794$8.99M0.21%––