IconICLR
13F holders, Q1 2025 (March 31)562holders −34
64new positions
95sold out
9famous investors
$175.20avg. 13F price*
At the end of Q1 2025, 562 institutions reported holding Icon PLC (ICLR) in their 13F filings, down 34 from Q4 2024. 64 opened new positions and 95 sold out. The largest holders were WCM Investment Management, LLC ($1.1B), Artisan Partners Limited Partnership ($750.9M) and Wellington Management Group LLP ($646.3M). 9 famous investors held it, including Seth Klarman (2.0% of Baupost Group's portfolio), David E. Shaw (0.4% of D. E. Shaw & Co.'s portfolio) and Ron Baron (0.4% of Baron Capital (BAMCO)'s portfolio).
- Company
- Icon PLC
- CUSIP
- G4705A100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 64 | $294.3M |
| Exits | 95 | $949.0M |
All 13F filers, Q4 2024 → Q1 2025: 12,443,289 shares bought and 13,343,006 shares sold, net −899,717 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 562 holders
| WCM Investment Management, LLC | 2.94% | Add +0.9% | 6,389,671 | $1.1B |
| Artisan Partners Limited Partnership | 1.22% | Add +2097.2% | 4,290,924 | $750.9M |
| Wellington Management Group LLP | 0.12% | Add +74.8% | 3,693,159 | $646.3M |
| Massachusetts Financial Services Co. | 0.18% | Reduce -3.1% | 3,101,629 | $542.8M |
| Invesco Ltd. | 0.10% | Add +57.8% | 2,987,961 | $522.9M |
| Ninety One UK Ltd | 1.42% | Reduce -1.0% | 2,918,187 | $510.7M |
| Franklin Resources Inc. | 0.11% | Reduce -3.3% | 2,100,035 | $367.5M |
| FMR LLC | 0.02% | Add +42.6% | 1,892,787 | $331.2M |
| Alliancebernstein L.P. | 0.12% | Add +2.2% | 1,860,907 | $325.6M |
| Clearbridge Investments, LLC | 0.28% | Reduce -10.1% | 1,844,458 | $322.8M |
| T. Rowe Price Associates Inc. | 0.04% | Reduce -41.7% | 1,710,225 | $299.3M |
| D. E. Shaw & Co. | 0.37% | Add +48.9% | 1,661,736 | $290.8M |
| Sustainable Growth Advisers, LP | 1.48% | Reduce -5.1% | 1,511,838 | $264.6M |
| Janus Henderson Group PLC | 0.14% | Reduce -3.2% | 1,437,960 | $257.5M |
| Ruane, Cunniff & Goldfarb L.P. | 3.99% | Reduce -0.9% | 1,254,350 | $219.5M |
| Comgest Global Investors S.A.S. | 3.71% | Add +1.4% | 1,189,086 | $208.1M |
| Norges Bank | 0.03% | Add +3.6% | 1,042,597 | $182.4M |
| Lazard Asset Management LLC | 0.30% | Reduce -45.0% | 1,008,965 | $176.6M |
| JPMorgan Chase & Co. | 0.01% | Reduce -9.2% | 974,210 | $170.5M |
| Bank of America Corp. | 0.01% | Reduce -0.2% | 872,571 | $152.7M |
| Allspring Global Investments Holdings, LLC | 0.26% | Add +21.7% | 897,646 | $149.5M |
| Trinity Street Asset Management LLP | 14.77% | Reduce -0.7% | 833,819 | $145.9M |
| Neuberger Berman Group LLC | 0.11% | Add +0.3% | 761,699 | $133.3M |
| Citadel Advisors | 0.12% | Add +23.4% | 705,320 | $123.4M |
| Baron Capital (BAMCO) | 0.36% | Reduce -4.0% | 704,485 | $123.3M |
| CCLA Investment Management | 2.04% | Add +2.0% | 659,912 | $115.4M |
| FIL Ltd | 0.11% | Reduce -21.1% | 659,274 | $115.4M |
| Polen Capital Management LLC | 0.35% | Reduce -10.8% | 635,052 | $111.1M |
| Morgan Stanley | 0.01% | Reduce -27.3% | 626,152 | $109.6M |
| Boston Partners | 0.13% | Reduce -4.2% | 604,919 | $105.8M |
| Earnest Partners LLC | 0.48% | Add +4.2% | 576,173 | $100.8M |
| Mawer Investment Management Ltd. | 0.49% | Reduce -4.2% | 576,071 | $100.8M |
| USS Investment Management Ltd | 0.76% | Add +0.0% | 569,635 | $99.7M |
| Wgi Dm, LLC | 6.74% | — | 547,542 | $95.8M |
| First Pacific Advisors, LP | 1.55% | Add +21.1% | 546,947 | $95.7M |
| Fisher Funds Management LTD | 2.19% | Reduce -9.3% | 516,666 | $90.4M |
| Sei Investments Co. | 0.11% | Add +67.9% | 493,136 | $86.3M |
| American Century Companies Inc. | 0.05% | Add +44.5% | 477,937 | $83.6M |
| Manufacturers Life Insurance Company, The | 0.08% | Reduce -4.0% | 464,837 | $81.3M |
| Dimensional Fund Advisors LP | 0.02% | Add +5.5% | 457,860 | $80.1M |
| Northern Trust Corp. | 0.01% | Add +3.9% | 446,020 | $78.0M |
| Fiduciary Management Inc. | 0.73% | Reduce -2.4% | 433,425 | $75.8M |
| Stephens Investment Management Group LLC | 1.08% | Add +1.8% | 428,824 | $75.0M |
| Goldman Sachs Group Inc. | 0.01% | Reduce -20.6% | 410,891 | $71.9M |
| Baupost Group | 2.04% | New | 405,000 | $70.9M |
| Oddo BHF Asset Management Sas | 2.85% | Reduce -25.4% | 395,559 | $69.2M |
| Fayez Sarofim & Co | 0.17% | Reduce -10.3% | 385,636 | $68.8M |
| UBS Group AG | 0.01% | Reduce -1.0% | 380,088 | $66.5M |
| Envestnet Asset Management Inc. | 0.02% | Reduce -13.5% | 372,044 | $65.1M |
| Westfield Capital Management Co. LP | 0.31% | Reduce -40.0% | 361,912 | $63.3M |
| Ninety One North America, Inc. | 4.19% | Add +15.8% | 355,906 | $62.3M |
| State Street Corp. | 0.00% | Add +4.4% | 355,775 | $62.3M |
| Voloridge Investment Management, LLC | 0.22% | Reduce -33.7% | 345,266 | $60.4M |
| Principal Financial Group Inc. | 0.03% | Reduce -51.5% | 302,148 | $52.9M |
| Southpoint Capital Advisors LP | 1.27% | New | 300,000 | $52.5M |
| BlackRock, Inc. | 0.00% | Add +14.3% | 299,239 | $52.4M |
| Qube Research & Technologies Ltd | 0.08% | Add +10.7% | 282,600 | $49.5M |
| Two Creeks Capital Management, LP | 3.09% | Reduce -7.1% | 276,531 | $48.4M |
| Legal & General Group Plc | 0.01% | Reduce -1.3% | 276,005 | $48.3M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 0.21% | Add +16.9% | 265,866 | $46.5M |
| Brown Brothers Harriman & Co. | 0.32% | Add +23.1% | 265,151 | $46.4M |
| Holocene Advisors, LP | 0.12% | Add +404.6% | 241,924 | $42.3M |
| Ameriprise Financial Inc. | 0.01% | Reduce -4.3% | 240,676 | $42.1M |
| Pertento Partners LLP | 5.00% | No change | 239,048 | $41.8M |
| Grandeur Peak Global Advisors, LLC | 4.64% | Add +64.5% | 239,042 | $41.8M |
| Alyeska Investment Group, L.P. | 0.16% | New | 227,096 | $39.7M |
| Employees Retirement System of Texas | 0.43% | Reduce -1.1% | 223,200 | $39.1M |
| Vanguard Group Inc. | 0.00% | Add +2.0% | 214,803 | $37.6M |
| Eagle Health Investments LP | 9.51% | No change | 209,190 | $36.6M |
| CIBC Private Wealth Group LLC | 0.08% | Add +5.3% | 252,835 | $36.0M |
| Sio Capital Management, LLC | 10.78% | Add +4.0% | 203,311 | $35.6M |
| BNP Paribas Financial Markets | 0.03% | Add +20.5% | 197,151 | $34.5M |
| Twinbeech Capital LP | 0.59% | New | 185,707 | $32.5M |
| Wells Fargo & Company | 0.01% | Reduce -13.5% | 184,831 | $32.3M |
| Brown Capital Management LLC | 0.96% | Add +1.4% | 182,045 | $31.9M |
| Hudson Edge Investment Partners Inc. | 6.46% | Reduce -1.3% | 181,565 | $31.8M |
| Renaissance Technologies | 0.05% | Add +42.2% | 178,924 | $31.3M |
| Canoe Financial LP | 0.49% | Add +22.0% | 175,677 | $30.7M |
| Macquarie Group Ltd. | 0.04% | Add +9.1% | 171,761 | $30.1M |
| 1832 Asset Management L.P. | 0.06% | Add +15.3% | 167,378 | $29.3M |
| Canada Pension Plan Investment Board | 0.03% | Reduce -12.1% | 165,610 | $29.0M |
| State of Tennessee, Department of Treasury | 0.11% | Add +2.8% | 163,327 | $28.6M |
| Cubist Systematic Strategies, LLC | 0.37% | Add +717.6% | 162,441 | $28.4M |
| J. Goldman & Co LP | 1.00% | Add +15000.3% | 161,875 | $28.3M |
| Russell Investments Group, Ltd. | 0.04% | Add +546.7% | 158,956 | $27.8M |
| Raymond James Financial Inc. | 0.01% | Reduce -13.1% | 148,507 | $26.0M |
| California Public Employees Retirement System | 0.02% | Reduce -3.0% | 147,955 | $25.9M |
| Pensioenfonds Rail & Ov | 1.72% | Reduce -7.2% | 141,761 | $24.8M |
| Renaissance Group LLC | 1.06% | Add +18.6% | 138,032 | $24.2M |
| Brandywine Global Investment Management, LLC | 0.17% | New | 134,394 | $23.7M |
| Clarkston Capital Partners, LLC | 0.46% | Add +33.4% | 133,465 | $23.4M |
| Natixis Advisors, LLC | 0.04% | Reduce -26.6% | 130,510 | $22.8M |
| Zuckerman Investment Group, LLC | 2.44% | Add +40.9% | 129,863 | $22.7M |
| Amundi | 0.01% | Reduce -1.6% | 131,398 | $21.5M |
| Millennium Management | 0.02% | Reduce -48.8% | 115,439 | $20.2M |
| Capital Research Global Investors | 0.00% | Reduce -90.6% | 107,915 | $18.9M |
| Sunriver Management LLC | 2.29% | Reduce -42.9% | 106,136 | $18.6M |
| Walter Public Investments Inc. | 3.34% | Add +5.6% | 102,397 | $17.9M |
| Armistice Capital, LLC | 0.47% | Reduce -76.1% | 100,052 | $17.5M |
| Swedbank AB | 0.02% | No change | 99,800 | $17.5M |
"% of holder's portfolio" is ICLR's weight in each manager's 13F, not the share of Icon PLC the manager owns.