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Livermore
Livermore
ZHEN

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.

Q1 2026 vs. Q4 2025

How the institutions holding Icon PLC changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of ICLR: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders51415420−79
Shares77.4M1.63M78.1M+2.41M (+3.2%)
Value$14.1B$295.9M$8.74B−$5.07B (−36.7%)

15 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (67)

Institutions that held Icon PLC at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to ICLR in Q1 2026
InstitutionSharesValue% of portfolio
Brave Warrior Advisors, LLC2,996,811$331.6M8.21%
Sachem Head Capital Management LP2,105,000$232.9M5.61%
Madison Avenue Partners, LP1,282,838$142.0M6.17%
Sound Shore Management Inc626,958$69.4M2.32%
Impactive Capital LP450,540$49.9M3.62%
Maple Rock Capital Partners Inc.335,300$37.1M1.21%
CIBC Bancorp USA Inc.228,953$25.4M0.03%
Soleus Capital Management, L.P.192,000$21.2M0.86%
Zurich Insurance Group Ltd109,926$12.2M0.10%
Polar Capital Holdings Plc100,460$11.1M0.05%
Steamboat Capital Partners, LLC100,299$11.1M2.76%
Stanley Capital Management, LLC100,000$11.1M1.85%
Meridiem Capital Partners LP93,878$10.4M0.68%
Leith Wheeler Investment Counsel Ltd.81,408$9.01M0.74%
Tudor Investment Corp Et Al65,375$7.23M0.04%
Trexquant Investment LP62,628$6.93M0.05%
683 Capital Management, LLC62,000$6.86M0.64%
Armistice Capital, LLC60,268$6.67M0.22%
Vanguard Capital Management LLC58,638$6.49M0.00%
Millennium Management LLC50,765$5.62M0.00%
DKRT Investments Corp.50,000$5.53M1.40%
Schonfeld Strategic Advisors LLC49,636$5.49M0.04%
Quinn Opportunity Partners LLC35,000$3.87M0.20%
Winton Group Ltd30,554$3.38M0.12%
Truffle Hound Capital, LLC24,000$2.66M1.63%
Militia Capital Management LLC22,800$2.52M0.57%
Heights Point Management, LP21,700$2.40M2.23%
American Financial Group Inc20,000$2.21M0.82%
Fund 1 Investments, LLC19,527$2.16M0.28%
Rangeley Capital, LLC17,700$1.96M2.12%
Vanguard Asset Management, Ltd17,590$1.95M0.00%
Vanguard Portfolio Management LLC17,036$1.89M0.00%
Kerrisdale Advisers, LLC15,646$1.73M0.66%
Marshall Wace, LLP14,367$1.59M0.00%
Maverick Capital LtdSuperinvestorMaverick Capital13,887$1.54M0.02%
Healthcare of Ontario Pension Plan Trust Fund13,112$1.45M0.00%
Numerai GP LLC11,196$1.24M0.12%
First Manhattan Co10,055$1.11M0.00%
Susquehanna International Group, LLP8,031$888.7K0.00%
Formula Growth Ltd7,000$774.6K0.35%
Brighton Jones LLC5,250$581.0K0.01%
Diametric Capital, LP3,753$415.3K0.11%
GFS Advisors, LLC6,700$322.8K0.02%
Texas Capital Bank Wealth Management Services Inc2,850$315.4K0.02%
Snowden Capital Advisors LLC2,841$314.4K0.01%
Gabelli Funds LLC2,500$276.6K0.00%
Gsa Capital Partners LLP2,485$275.0K0.02%
T3 Companies, LLC2,000$221.3K0.30%
VELA Investment Management, LLC1,994$220.7K0.06%
Ground Swell Capital, LLC1,885$208.6K0.41%
ABS Direct Equity Fund LLC1,800$201.5K0.15%
Headlands Technologies LLC1,808$200.1K0.02%
Simplex Trading, LLC1,366$151.2K0.00%
Stance Capital LLC600$66.4K0.03%
Vanguard Global Advisers, LLC437$48.4K0.00%
Bank of New Hampshire282$31.2K0.01%
Banque Transatlantique SA188$20.8K0.00%
MBM Wealth Consultants, LLC120$13.3K0.00%
Mather Group, LLC.107$11.8K0.00%
Whipplewood Advisors, LLC57$6.31K0.00%
Innovative Asset Advisors Group, LLC19$2.10K0.00%
Ogorek Anthony Joseph20$2.00K0.00%
Key Financial Inc10$1.11K0.00%
Vermillion Wealth Management, Inc.3$3320.00%
TopTier Wealth Management, LLC2$2210.00%
Curio Wealth, LLC1$1110.00%
Harbour Investments, Inc.0$130.00%

Sold out (146)

Institutions that held Icon PLC at the end of Q4 2025 and filed for Q1 2026 without it.

Showing the largest 100 of 146 by value.

Institutions that sold out of ICLR in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Orbis Allan Gray Ltd4,214,661$768.0M
Ninety One UK Ltd2,945,810$536.8M
Wgi DM, LLC1,396,009$254.4M
American Century Companies Inc1,038,013$189.1M
Jennison Associates LLC677,981$123.5M
Clearbridge Investments, LLC616,991$112.4M
Altrinsic Global Advisors LLC507,824$92.5M
Fiduciary Management Inc480,996$87.6M
Ninety One North America, Inc.455,399$83.0M
Voya Investment Management LLC438,319$79.9M
Samlyn Capital, LLC337,681$61.5M
Qube Research & Technologies Ltd289,135$52.7M
Ilex Capital Partners (UK) LLP211,898$38.6M
Canoe Financial LP193,917$35.3M
Prosight Management, LP110,000$20.0M
Polen Capital Management LLC105,206$19.2M
Hound Partners, LLC75,000$13.7M
Braidwell LP73,370$13.4M
Edmond de Rothschild Holding S.A.61,332$11.2M
Kelly Lawrence W & Associates Inc60,116$11.0M
DekaBank Deutsche Girozentrale30,885$10.3M
Arvin Capital Management LP50,160$9.14M
ExodusPoint Capital Management, LP48,055$8.76M
Armor Advisors, L.L.C.39,868$7.26M
Ninety One SA (PTY) Ltd32,751$5.97M
LVM Capital Management Ltd32,257$5.88M
Financiere des Professionnels - Fonds d,investissement inc.29,343$5.35M
Trillium Asset Management, LLC28,085$5.33M
Strategic Global Advisors, LLC27,407$4.99M
Walleye Trading LLC27,383$4.99M
Natixis Advisors, L.P.27,264$4.97M
Calamos Advisors LLC26,500$4.83M
Hunter Perkins Capital Management, LLC26,285$4.79M
Kornitzer Capital Management Inc25,037$4.56M
Bellevue Group AG24,560$4.48M
WCM Investment Management, LLC24,145$4.42M
D.A. Davidson & Co.19,778$3.60M
Manhattan West Asset Management, LLC17,939$3.27M
Exencial Wealth Advisors, LLC14,699$2.68M
Employees Retirement System of Texas11,901$2.17M
HSBC Holdings PLC11,028$2.01M
Hollow Brook Wealth Management LLC10,983$2.00M
Macquarie Group Ltd10,106$1.84M
Schroder Investment Management Group9,294$1.70M
Maridea Wealth Management LLC9,208$1.68M
Utah Retirement Systems8,677$1.58M
Irenic Capital Management LP8,000$1.46M
NEOS Investment Management LLC7,897$1.44M
Diversified Trust Co7,166$1.31M
Raiffeisen Bank International AG7,000$1.28M
Huber Capital Management LLC6,760$1.23M
Brant Point Investment Management LLC6,000$1.09M
Robeco Schweiz AG5,582$1.02M
Verdence Capital Advisors LLC5,150$938.4K
Confluence Investment Management LLC5,022$915.1K
Tealwood Asset Management Inc5,001$911.0K
Redmond Asset Management, LLC4,931$898.5K
Benjamin Edwards Inc4,666$850.2K
Vestmark Advisory Solutions, Inc.4,048$737.6K
M&T Bank Corp3,805$693.8K
FIL Ltd3,576$651.6K
Annandale Capital, LLC3,300$601.0K
Sumitomo Mitsui Trust Holdings, Inc.3,298$601.0K
Voloridge Investment Management, LLC2,961$539.6K
Gibbs Wealth Management2,921$529.8K
Marietta Investment Partners LLC2,841$517.7K
Quantinno Capital Management LP2,754$502.0K
Mount Yale Investment Advisors, LLC2,672$486.9K
Qsemble Capital Management, LP2,659$484.5K
Westfield Capital Management Co LP2,534$461.7K
Optimize Financial Inc2,461$448.4K
Dana Investment Advisors, Inc.2,301$419.3K
Two Sigma Securities, LLC2,224$405.3K
White Knight Strategic Wealth Advisors, LLC2,193$399.6K
Forum Financial Management, LP2,078$378.7K
Davenport & Co LLC2,071$377.4K
Hilltop Holdings Inc.1,958$356.8K
Eagle Harbor Asset Management Inc1,887$343.8K
Tectonic Advisors LLC1,883$343.1K
Leonteq Securities AG1,795$327.1K
Portside Wealth Group, LLC1,720$313.4K
Skopos Labs, Inc.1,693$308.7K
AQR Capital Management LLC1,689$307.7K
Summit Creek Advisors LLC1,655$301.6K
Somerset Trust Co1,650$300.7K
Pinnacle Wealth Management Advisory Group, LLC1,624$295.9K
Concurrent Investment Advisors, LLC1,584$288.6K
Foster Victor Wealth Advisors, LLC1,573$287.2K
NorthCrest Asset Manangement, LLC1,440$284.5K
Simplify Asset Management Inc.1,555$283.4K
HBK Sorce Advisory LLC1,865$280.9K
International Assets Investment Management, LLC1,535$279.7K
Brinker Capital Investments, LLC1,511$275.3K
Tandem Investment Advisors, Inc.1,379$251.3K
Callan Family Office, LLC1,364$248.5K
Clifford Swan Investment Counsel LLC1,360$247.8K
Guggenheim Capital LLC1,338$243.8K
Alliance Wealth Advisors, LLC1,332$242.7K
American Trust1,328$242.0K
DAGCO, Inc.1,325$241.4K

Not filed for Q1 2026 yet (15)

Institutions that held Icon PLC at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ICLR in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Norges Bank878,462$160.1M
Brandywine Global Investment Management, LLC399,813$71.7M
CIBC Private Wealth Group, LLC205,316$37.4M
Vanguard Group Inc91,496$16.7M
Keystone Investors Pte Ltd33,526$6.11M
MidWestOne Financial Group, Inc.4,459$812.5K
Transatlantique Private Wealth LLC4,022$732.9K
Militia Capital Partners, LP4,000$728.9K
BancorpSouth Bank3,862$703.7K
FineMark National Bank & Trust2,035$370.8K
QSV Equity Investors LLC1,361$248.0K
David Loasby1,161$209.2K
Global Retirement Partners, LLC547$99.7K
Trust Co of Vermont70$12.8K
Maryland Capital Advisors Inc.16$2.92K