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 2026
Institutional positions in Icon PLC as of Mar 31, 2026. 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
- 420
- −79 vs. Q4 2025
- Shares held
- 78.1M
- +2.41M (+3.2%) vs. Q4 2025
- Total value
- $8.74B
- −$5.07B (−36.7%) vs. Q4 2025
- New holders
- 67
- 156 more added
- Sold out
- 146
- 140 more reduced
15 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: 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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 423 | $13.9B |
| Q1 2026 | 420 | $8.74B |
| Q4 2025 | 514 | $14.1B |
| Q3 2025 | 513 | $13.0B |
| Q2 2025 | 489 | $11.2B |
| Q1 2025 | 562 | $13.3B |
| Q4 2024 | 596 | $16.0B |
| Q3 2024 | 662 | $22.4B |
| Q2 2024 | 676 | $24.3B |
| Q1 2024 | 648 | $26.1B |
| Q4 2023 | 603 | $22.1B |
| Q3 2023 | 556 | $19.7B |
| Q2 2023 | 534 | $19.9B |
| Q1 2023 | 538 | $16.1B |
| Q4 2022 | 531 | $14.5B |
| Q3 2022 | 488 | $13.9B |
| Q2 2022 | 510 | $16.2B |
| Q1 2022 | 512 | $17.8B |
| Q4 2021 | 548 | $22.7B |
| Q3 2021 | 510 | $19.3B |
| Q2 2021 | 449 | $12.3B |
| Q1 2021 | 426 | $10.0B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Icon PLC; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| DnB Asset Management AS | 60,862 | $6.73M | 0.02% | +28,273+86.8% | Added |
| Armistice Capital, LLC | 60,268 | $6.67M | 0.22% | +60,268 | New |
| Vanguard Capital Management LLC | 58,638 | $6.49M | 0.00% | +58,638 | New |
| Palisade Capital Management LLC | 58,150 | $6.43M | 0.21% | −383−0.7% | Reduced |
| Gateway Investment Advisers LLC | 57,862 | $6.40M | 0.07% | +20,076+53.1% | Added |
| Firetrail Investments Pty Ltd | 57,624 | $6.38M | 2.18% | +2,648+4.8% | Added |
| PFM Health Sciences, LP | 57,500 | $6.36M | 0.67% | −57,836−50.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 51,551 | $5.70M | 0.01% | 00.0% | Unchanged |
| Millennium Management LLC | 50,765 | $5.62M | 0.00% | +50,765 | New |
| Marks Group Wealth Management, Inc | 50,201 | $5.56M | 0.54% | +4,647+10.2% | Added |
| DKRT Investments Corp. | 50,000 | $5.53M | 1.40% | +50,000 | New |
| Osborne Partners Capital Management, LLC | 49,764 | $5.51M | 0.29% | −1,115−2.2% | Reduced |
| Schonfeld Strategic Advisors LLC | 49,636 | $5.49M | 0.04% | +49,636 | New |
| Barclays PLC | 44,810 | $4.96M | 0.00% | +37,384+503.4% | Added |
| Capital International Sarl | 44,201 | $4.89M | 0.08% | −7,018−13.7% | Reduced |
| Van Eck Associates Corp | 42,718 | $4.73M | 0.00% | −7,983−15.7% | Reduced |
| Verition Fund Management LLC | 42,343 | $4.69M | 0.05% | +30,342+252.8% | Added |
| Nomura Asset Management International Inc. | 41,892 | $4.64M | 0.01% | −228,167−84.5% | Reduced |
| Liontrust Investment Partners LLP | 41,110 | $4.55M | 0.08% | −2,707−6.2% | Reduced |
| Sendero Wealth Management, LLC | 40,480 | $4.48M | 0.50% | +19,865+96.4% | Added |
| Hotchkis & Wiley Capital Management LLC | 38,892 | $4.30M | 0.01% | +27,692+247.3% | Added |
| Janney Montgomery Scott LLC | 36,659 | $4.06M | 0.01% | +12,717+53.1% | Added |
| Toroso Investments, LLC | 38,298 | $4.04M | 0.01% | +35,444+1,241.9% | Added |
| Timber Creek Capital Management LLC | 36,120 | $4.00M | 0.97% | +5,135+16.6% | Added |
| Hudson Bay Capital Management LP | 36,000 | $3.98M | 0.02% | −78,000−68.4% | Reduced |
| Quinn Opportunity Partners LLC | 35,000 | $3.87M | 0.20% | +35,000 | New |
| Motley Fool Wealth Management, LLC | 34,319 | $3.80M | 0.43% | −11,648−25.3% | Reduced |
| Amundi | 33,583 | $3.72M | 0.00% | +15,773+88.6% | Added |
| Captrust Financial Advisors | 33,021 | $3.65M | 0.01% | +5,477+19.9% | Added |
| Prescott Group Capital Management, L.L.C. | 32,682 | $3.62M | 0.36% | +20,429+166.7% | Added |
| Swedbank AB | 32,150 | $3.56M | 0.00% | −6,550−16.9% | Reduced |
| Bank of New York Mellon Corp | 31,846 | $3.52M | 0.00% | −4,416−12.2% | Reduced |
| JPMorgan Chase & Co | 32,994 | $3.47M | 0.00% | −734,930−95.7% | Reduced |
| Winton Group Ltd | 30,554 | $3.38M | 0.12% | +30,554 | New |
| Rice Hall James & Associates, LLC | 30,146 | $3.34M | 0.19% | +18,175+151.8% | Added |
| Arkadios Wealth Advisors | 29,843 | $3.30M | 0.05% | +13,939+87.6% | Added |
| Circumference Group LLC | 29,000 | $3.21M | 7.19% | +1,000+3.6% | Added |
| Motley Fool Asset Management LLC | 28,938 | $3.20M | 0.14% | −34,404−54.3% | Reduced |
| Two Sigma Investments, LP | 28,934 | $3.20M | 0.00% | +34+0.1% | Added |
| First National Bank of Omaha | 28,370 | $3.14M | 0.10% | −7,466−20.8% | Reduced |
| London Co of Virginia | 27,939 | $3.09M | 0.02% | +13,501+93.5% | Added |
| Quartz Partners, LLC | 26,620 | $2.95M | 1.14% | +8,516+47.0% | Added |
| Pathstone Holdings, LLC | 26,174 | $2.90M | 0.01% | +4,910+23.1% | Added |
| SeaBridge Investment Advisors LLC | 25,904 | $2.87M | 0.48% | +3,641+16.4% | Added |
| CWM Advisors, LLC | 24,983 | $2.76M | 0.16% | +11,495+85.2% | Added |
| Capital International Ltd | 24,663 | $2.73M | 0.10% | −4,583−15.7% | Reduced |
| Deutsche Bank AG | 24,342 | $2.69M | 0.00% | −668−2.7% | Reduced |
| Truffle Hound Capital, LLC | 24,000 | $2.66M | 1.63% | +24,000 | New |
| Lazard Asset Management LLC | 23,072 | $2.55M | 0.00% | −349,375−93.8% | Reduced |
| Militia Capital Management LLC | 22,800 | $2.52M | 0.57% | +22,800 | New |
| Heights Point Management, LP | 21,700 | $2.40M | 2.23% | +21,700 | New |
| National Philanthropic Trust | 21,677 | $2.40M | 0.03% | −155−0.7% | Reduced |
| Stifel Financial Corp | 21,599 | $2.39M | 0.00% | −6,061−21.9% | Reduced |
| Buckhead Capital Management LLC | 21,285 | $2.36M | 0.89% | +4,631+27.8% | Added |
| Live Oak Private Wealth LLC | 20,822 | $2.30M | 0.32% | +2,007+10.7% | Added |
| Citigroup Inc | 20,658 | $2.29M | 0.00% | +8,220+66.1% | Added |
| American Financial Group Inc | 20,000 | $2.21M | 0.82% | +20,000 | New |
| LPL Financial LLC | 19,988 | $2.21M | 0.00% | −4,679−19.0% | Reduced |
| Quantitative Investment Management, LLC | 19,762 | $2.19M | 0.23% | +14,655+287.0% | Added |
| Romano Brothers and Company | 19,610 | $2.17M | 0.25% | −400−2.0% | Reduced |
| Fund 1 Investments, LLC | 19,527 | $2.16M | 0.28% | +19,527 | New |
| Skylands Capital, LLC | 19,300 | $2.14M | 0.28% | +13,650+241.6% | Added |
| Bank Julius Baer & Co. Ltd, Zurich | 18,376 | $2.03M | 0.01% | −120−0.6% | Reduced |
| BNP Paribas Arbitrage, SA | 18,227 | $2.02M | 0.00% | −31,274−63.2% | Reduced |
| Rangeley Capital, LLC | 17,700 | $1.96M | 2.12% | +17,700 | New |
| Vanguard Asset Management, Ltd | 17,590 | $1.95M | 0.00% | +17,590 | New |
| Vanguard Portfolio Management LLC | 17,036 | $1.89M | 0.00% | +17,036 | New |
| UBS Asset Management Americas Inc | 16,564 | $1.83M | 0.00% | +3,818+30.0% | Added |
| Heartland Advisors Inc | 16,066 | $1.78M | 0.09% | +8,008+99.4% | Added |
| Avidity Partners Management LP | 16,000 | $1.77M | 0.36% | −17,100−51.7% | Reduced |
| Kennedy Capital Management, Inc. | 15,648 | $1.73M | 0.04% | −2,518−13.9% | Reduced |
| Kerrisdale Advisers, LLC | 15,646 | $1.73M | 0.66% | +15,646 | New |
| Cetera Investment Advisers | 14,859 | $1.64M | 0.00% | +2,221+17.6% | Added |
| Foyston, Gordon, & Payne Inc | 14,535 | $1.61M | 0.37% | −11,819−44.8% | Reduced |
| Marshall Wace, LLP | 14,367 | $1.59M | 0.00% | +14,367 | New |
| USS Investment Management Ltd | 14,015 | $1.55M | 0.01% | +587+4.4% | Added |
| Grandeur Peak Global Advisors, LLC | 13,967 | $1.55M | 0.36% | +4,694+50.6% | Added |
| Maverick Capital LtdSuperinvestorMaverick Capital | 13,887 | $1.54M | 0.02% | +13,887 | New |
| Capital International Inc | 13,663 | $1.51M | 0.01% | −3,209−19.0% | Reduced |
| TD Asset Management Inc | 13,468 | $1.49M | 0.00% | +1,579+13.3% | Added |
| Banque Pictet & Cie SA | 13,238 | $1.46M | 0.02% | −253−1.9% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 13,277 | $1.46M | 0.01% | +4,192+46.1% | Added |
| Banque de Luxembourg S.A. | 13,187 | $1.46M | 0.76% | −3,925−22.9% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 13,112 | $1.45M | 0.00% | +13,112 | New |
| Entropy Technologies, LP | 12,816 | $1.42M | 0.07% | +6,546+104.4% | Added |
| Handelsbanken Fonder AB | 12,739 | $1.41M | 0.00% | −6,449−33.6% | Reduced |
| Northern Trust Corp | 12,450 | $1.38M | 0.00% | −9,257−42.6% | Reduced |
| Thor Investment Management Inc | 12,417 | $1.37M | 0.73% | +197+1.6% | Added |
| Truist Financial Corp | 12,335 | $1.36M | 0.00% | −12,252−49.8% | Reduced |
| Daiwa Securities Group Inc. | 12,160 | $1.35M | 0.00% | −22,834−65.3% | Reduced |
| Mackenzie Financial Corp | 11,928 | $1.32M | 0.00% | +8,256+224.8% | Added |
| Numerai GP LLC | 11,196 | $1.24M | 0.12% | +11,196 | New |
| Stephens Inc | 10,547 | $1.17M | 0.01% | +5,325+102.0% | Added |
| First Manhattan Co | 10,055 | $1.11M | 0.00% | +10,055 | New |
| Rothschild Investment LLC | 9,885 | $1.09M | 0.06% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 9,863 | $1.09M | 0.00% | −184,287−94.9% | Reduced |
| Sanctuary Advisors, LLC | 9,050 | $1.00M | 0.01% | +4,118+83.5% | Added |
| Nicholas Hoffman & Company, LLC. | 8,954 | $990.9K | 0.02% | +3,548+65.6% | Added |
| US Bancorp | 8,953 | $990.7K | 0.00% | −2,554−22.2% | Reduced |
| Assetmark, Inc | 8,835 | $977.7K | 0.00% | +3,938+80.4% | Added |