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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
PDT Partners, LLC26,300$5.17M0.37%––
Marks Group Wealth Management, Inc26,678$5.25M0.78%––
Running Oak Capital LLC27,305$5.36M1.63%––
LPL Financial LLC27,373$5.38M0.01%––
Raymond James Financial Services Advisors, Inc.28,181$5.53M0.01%––
QS Investors, LLC29,064$5.66M0.07%––
Advisors Asset Management, Inc.29,107$5.72M0.09%––
Vanguard Group Inc29,908$5.87M0.00%––
Rice Hall James & Associates, LLC30,390$5.97M0.19%––
GW&K Investment Management, LLC30,721$6.03M0.06%––
Goldman Sachs Group Inc31,107$6.11M0.00%––
Jefferies Group LLC32,316$6.35M0.15%––
Brant Point Investment Management LLC32,335$6.35M1.15%––
Henry James International Management, Inc.32,490$6.38M1.92%––
State of Michigan Retirement System33,470$6.57M0.04%––
First Republic Investment Management, Inc.34,890$6.85M0.02%––
Voloridge Investment Management, LLC35,540$6.98M0.05%––
JLB & Associates Inc36,036$7.08M1.16%––
GAM Holding AG36,663$7.20M0.34%––
Marshall Wace, LLP38,146$7.49M0.04%––
Farmers & Merchants Investments Inc41,360$8.12M0.39%––
Strategic Global Advisors, LLC42,018$8.25M1.49%––
United Capital Financial Advisers, LLC43,165$8.48M0.05%––
FineMark National Bank & Trust43,477$8.54M0.36%––
Truist Financial Corp43,571$8.56M0.01%––
Bell Asset Management Ltd43,621$8.57M1.84%––
Avalon Investment & Advisory45,794$8.99M0.21%––
State of Wisconsin Investment Board45,949$9.02M0.02%––
Ameriprise Financial Inc46,763$9.18M0.00%––
Sio Capital Management, LLC47,500$9.33M1.95%––
Royal Bank of Canada47,749$9.38M0.00%––
Beaconlight Capital, LLC48,073$9.44M3.76%––
JPMorgan Chase & Co48,621$9.55M0.00%––
Silvercrest Asset Management Group LLC49,623$9.74M0.07%––
Premier Fund Managers Ltd49,566$9.76M0.38%––
AXA S.A.49,781$9.78M0.03%––
Comerica Bank45,268$9.86M0.06%––
Hantz Financial Services, Inc.50,597$9.94M0.41%––
Ativo Capital Management LLC50,640$9.94M4.22%––
Nicholas Company, Inc.51,430$10.1M0.19%––
Stifel Financial Corp51,883$10.2M0.02%––
Motley Fool Wealth Management, LLC53,595$10.5M0.47%––
Citigroup Inc55,440$10.9M0.01%––
Renaissance Group LLC56,555$11.1M0.47%––
LVM Capital Management Ltd57,964$11.4M1.85%––
Natixis Advisors, L.P.58,483$11.5M0.06%––
Healthcare of Ontario Pension Plan Trust Fund59,000$11.6M0.03%––
Teachers Retirement System of the State of Kentucky65,276$12.8M0.13%––
Globeflex Capital L P65,610$12.9M2.35%––
PFM Health Sciences, LP65,863$12.9M0.45%––
State Street Corp70,881$13.9M0.00%––
Legal & General Group Plc72,943$14.3M0.01%––
Canada Pension Plan Investment Board74,052$14.5M0.02%––
FMR LLC74,994$14.7M0.00%––
McKinley Capital Management LLC /Delaware79,790$15.7M1.18%––
Tygh Capital Management, Inc.80,066$15.7M2.22%––
Parametric Portfolio Associates LLC81,057$15.9M0.01%––
Russell Investments Group, Ltd.84,157$16.6M0.03%––
Victory Capital Management Inc92,811$18.2M0.02%––
Weiss Multi-Strategy Advisers LLC92,915$18.2M0.41%––
State of Tennessee, Treasury Department94,897$18.6M0.08%––
Citadel Advisors LLC96,514$19.0M0.02%––
Todd Asset Management LLC101,357$19.9M0.47%––
Peregrine Capital Management LLC105,405$20.7M0.38%––
Macquarie Group Ltd106,775$21.0M0.03%––
Polar Capital Holdings Plc107,942$21.2M0.13%––
Raymond James & Associates114,649$22.5M0.02%––
Kornitzer Capital Management Inc115,506$22.7M0.36%––
Nordea Investment Management AB119,026$23.3M0.03%––
Geode Capital Management, LLC119,448$23.5M0.00%––
Wells Fargo & Company121,532$23.9M0.01%––
Summit Creek Advisors LLC125,594$24.7M2.94%––
California Public Employees Retirement System126,430$24.8M0.02%––
BlackRock Inc.126,885$24.9M0.00%––
Ninety One North America, Inc.128,955$25.3M1.46%––
Standard Life Aberdeen plc131,033$25.8M0.06%––
Federated Hermes, Inc.148,099$29.1M0.06%––
Millennium Management LLC170,651$33.5M0.05%––
Clark Capital Management Group, Inc.185,973$36.5M0.56%––
Bank of New York Mellon Corp192,885$37.9M0.01%––
Two Sigma Advisers, LP205,330$40.3M0.11%––
CIBC Private Wealth Group, LLC210,985$41.4M0.10%––
SEI Investments Co213,678$42.0M0.11%––
Envestnet Asset Management Inc215,132$42.2M0.03%––
Morgan Stanley216,670$42.5M0.01%––
Loomis Sayles & Co L P219,478$43.1M0.06%––
Nuveen Asset Management, LLC222,102$43.6M0.01%––
Montanaro Asset Management Ltd236,650$46.5M6.84%––
Two Sigma Investments, LP253,024$49.7M0.15%––
Palisade Capital Management LLC308,877$60.7M1.42%––
New York State Common Retirement Fund310,731$61.0M0.07%––
Northern Trust Corp314,569$61.8M0.01%––
D. E. Shaw & Co., Inc.315,684$62.0M0.08%––
Bank of Montreal327,431$65.0M0.05%––
Brown Capital Management LLC332,789$65.3M0.49%––
Putnam Investments LLC349,160$68.6M0.11%––
Lazard Asset Management LLC371,589$73.0M0.09%––
Baird Financial Group, Inc.422,641$83.0M0.23%––
Bank of America Corp423,964$83.3M0.01%––
William Blair Investment Management, LLC447,815$87.9M0.28%––