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 |
|---|---|---|---|---|---|
| Sendero Wealth Management, LLC | 40,480 | $4.48M | 0.50% | +19,865+96.4% | Added |
| Liontrust Investment Partners LLP | 41,110 | $4.55M | 0.08% | −2,707−6.2% | Reduced |
| Nomura Asset Management International Inc. | 41,892 | $4.64M | 0.01% | −228,167−84.5% | Reduced |
| Verition Fund Management LLC | 42,343 | $4.69M | 0.05% | +30,342+252.8% | Added |
| Van Eck Associates Corp | 42,718 | $4.73M | 0.00% | −7,983−15.7% | Reduced |
| Capital International Sarl | 44,201 | $4.89M | 0.08% | −7,018−13.7% | Reduced |
| Barclays PLC | 44,810 | $4.96M | 0.00% | +37,384+503.4% | Added |
| Schonfeld Strategic Advisors LLC | 49,636 | $5.49M | 0.04% | +49,636 | New |
| Osborne Partners Capital Management, LLC | 49,764 | $5.51M | 0.29% | −1,115−2.2% | Reduced |
| DKRT Investments Corp. | 50,000 | $5.53M | 1.40% | +50,000 | New |
| Marks Group Wealth Management, Inc | 50,201 | $5.56M | 0.54% | +4,647+10.2% | Added |
| Millennium Management LLC | 50,765 | $5.62M | 0.00% | +50,765 | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 51,551 | $5.70M | 0.01% | 00.0% | Unchanged |
| PFM Health Sciences, LP | 57,500 | $6.36M | 0.67% | −57,836−50.1% | Reduced |
| Firetrail Investments Pty Ltd | 57,624 | $6.38M | 2.18% | +2,648+4.8% | Added |
| Gateway Investment Advisers LLC | 57,862 | $6.40M | 0.07% | +20,076+53.1% | Added |
| Palisade Capital Management LLC | 58,150 | $6.43M | 0.21% | −383−0.7% | Reduced |
| Vanguard Capital Management LLC | 58,638 | $6.49M | 0.00% | +58,638 | New |
| Armistice Capital, LLC | 60,268 | $6.67M | 0.22% | +60,268 | New |
| DnB Asset Management AS | 60,862 | $6.73M | 0.02% | +28,273+86.8% | Added |
| 683 Capital Management, LLC | 62,000 | $6.86M | 0.64% | +62,000 | New |
| Trexquant Investment LP | 62,628 | $6.93M | 0.05% | +62,628 | New |
| Tudor Investment Corp Et Al | 65,375 | $7.23M | 0.04% | +65,375 | New |
| Muhlenkamp & Co Inc | 66,005 | $7.30M | 1.92% | −7,860−10.6% | Reduced |
| Eversept Partners, LP | 68,688 | $7.60M | 0.50% | −27,144−28.3% | Reduced |
| Wells Fargo & Company | 73,359 | $8.12M | 0.00% | −31,204−29.8% | Reduced |
| Parthenon LLC | 79,203 | $8.76M | 1.00% | 00.0% | Unchanged |
| Foresight Group Ltd Liability Partnership | 80,660 | $8.93M | 1.58% | −233−0.3% | Reduced |
| Leith Wheeler Investment Counsel Ltd. | 81,408 | $9.01M | 0.74% | +81,408 | New |
| Janus Henderson Group PLC | 82,061 | $9.08M | 0.00% | −166,218−66.9% | Reduced |
| Allspring Global Investments Holdings, LLC | 82,135 | $9.15M | 0.02% | −998,057−92.4% | Reduced |
| Farmers & Merchants Investments Inc | 83,021 | $9.19M | 0.25% | +2,446+3.0% | Added |
| State of Michigan Retirement System | 85,070 | $9.41M | 0.05% | 00.0% | Unchanged |
| Cambiar Investors LLC | 87,045 | $9.63M | 0.45% | +12,223+16.3% | Added |
| Charles Schwab Investment Management Inc | 87,381 | $9.67M | 0.00% | +32,917+60.4% | Added |
| Meridiem Capital Partners LP | 93,878 | $10.4M | 0.68% | +93,878 | New |
| Geode Capital Management, LLC | 95,880 | $10.6M | 0.00% | +4,207+4.6% | Added |
| Bank of Montreal | 96,404 | $10.7M | 0.00% | +34,539+55.8% | Added |
| Stanley Capital Management, LLC | 100,000 | $11.1M | 1.85% | +100,000 | New |
| Steamboat Capital Partners, LLC | 100,299 | $11.1M | 2.76% | +100,299 | New |
| Polar Capital Holdings Plc | 100,460 | $11.1M | 0.05% | +100,460 | New |
| Ameriprise Financial Inc | 102,237 | $11.3M | 0.00% | −81,863−44.5% | Reduced |
| Canada Pension Plan Investment Board | 102,743 | $11.4M | 0.01% | −73,998−41.9% | Reduced |
| Kingdon Capital Management, L.L.C. | 105,300 | $11.7M | 1.95% | +54,700+108.1% | Added |
| Aviva PLC | 106,512 | $11.8M | 0.02% | −2,562−2.3% | Reduced |
| Frontier Capital Management Co LLC | 108,467 | $12.0M | 0.12% | +35,723+49.1% | Added |
| Running Oak Capital LLC | 108,647 | $12.0M | 1.62% | +17,175+18.8% | Added |
| Vident Advisory, LLC | 109,046 | $12.1M | 0.10% | +67,987+165.6% | Added |
| Zurich Insurance Group Ltd | 109,926 | $12.2M | 0.10% | +109,926 | New |
| Philosophy Capital Management LLC | 111,015 | $12.3M | 1.43% | −33,040−22.9% | Reduced |
| CI Private Wealth, LLC | 115,291 | $12.8M | 0.02% | +66,154+134.6% | Added |
| California Public Employees Retirement System | 120,297 | $13.3M | 0.01% | −35,755−22.9% | Reduced |
| Eldred Rock Partners, LLC | 134,469 | $14.9M | 3.79% | +81,398+153.4% | Added |
| Balyasny Asset Management LLC | 136,416 | $15.1M | 0.03% | +60,888+80.6% | Added |
| Hyperion Capital Advisors LP | 142,455 | $15.8M | 7.59% | +76,434+115.8% | Added |
| Envestnet Asset Management Inc | 145,263 | $16.1M | 0.00% | +30,118+26.2% | Added |
| Moore Capital Management, LP | 147,208 | $16.3M | 0.59% | +90,018+157.4% | Added |
| Manufacturers Life Insurance Company, The | 150,794 | $16.7M | 0.01% | −91,710−37.8% | Reduced |
| Royal Bank of Canada | 153,728 | $17.0M | 0.00% | +62,225+68.0% | Added |
| Distillate Capital Partners LLC | 153,865 | $17.0M | 0.90% | +87,725+132.6% | Added |
| Brown Capital Management LLC | 158,018 | $17.5M | 2.48% | +33,380+26.8% | Added |
| Brown Advisory Inc | 173,379 | $19.2M | 0.03% | +81,023+87.7% | Added |
| Fisher Funds Management LTD | 174,291 | $19.3M | 0.57% | −338,811−66.0% | Reduced |
| Legal & General Group Plc | 175,394 | $19.4M | 0.00% | +27,679+18.7% | Added |
| Soleus Capital Management, L.P. | 192,000 | $21.2M | 0.86% | +192,000 | New |
| Walleye Capital LLC | 196,571 | $21.8M | 0.13% | +62,290+46.4% | Added |
| Diamond Hill Capital Management Inc | 220,337 | $24.4M | 0.15% | −18,805−7.9% | Reduced |
| CIBC Bancorp USA Inc. | 228,953 | $25.4M | 0.03% | +228,953 | New |
| Perry Creek Capital LP | 245,000 | $27.1M | 16.89% | +150,000+157.9% | Added |
| Citadel Advisors LLC | 251,607 | $27.8M | 0.02% | +209,642+499.6% | Added |
| Raymond James Financial Inc | 261,432 | $28.9M | 0.01% | +70,325+36.8% | Added |
| Zuckerman Investment Group, LLC | 280,992 | $31.1M | 2.92% | +125,349+80.5% | Added |
| Morgan Stanley | 293,142 | $32.4M | 0.00% | −180,497−38.1% | Reduced |
| Sio Capital Management, LLC | 306,358 | $33.9M | 4.89% | +179,156+140.8% | Added |
| HGK Asset Management Inc | 319,003 | $35.3M | 5.16% | +58,554+22.5% | Added |
| Maple Rock Capital Partners Inc. | 335,300 | $37.1M | 1.21% | +335,300 | New |
| New York State Common Retirement Fund | 345,711 | $38.3M | 0.05% | +99,345+40.3% | Added |
| Eagle Health Investments LP | 358,500 | $39.7M | 8.33% | +111,410+45.1% | Added |
| River Road Asset Management, LLC | 369,715 | $40.9M | 0.46% | −105,698−22.2% | Reduced |
| Standard Life Aberdeen plc | 399,290 | $44.2M | 0.07% | +333,227+504.4% | Added |
| BlackRock, Inc. | 413,596 | $45.8M | 0.00% | +35,753+9.5% | Added |
| Bamco Inc | 426,805 | $47.2M | 0.14% | −107,443−20.1% | Reduced |
| Impactive Capital LP | 450,540 | $49.9M | 3.62% | +450,540 | New |
| State Street Corp | 457,209 | $50.6M | 0.00% | +96,003+26.6% | Added |
| Russell Investments Group, Ltd. | 514,306 | $56.9M | 0.06% | +233,371+83.1% | Added |
| Bank of America Corp | 543,487 | $60.1M | 0.00% | −66,178−10.9% | Reduced |
| Stephens Investment Management Group LLC | 599,176 | $66.3M | 0.91% | +56,180+10.3% | Added |
| UBS Group AG | 612,265 | $67.8M | 0.01% | +73,628+13.7% | Added |
| Thrivent Financial for Lutherans | 622,366 | $68.9M | 0.13% | +338,864+119.5% | Added |
| Sound Shore Management Inc | 626,958 | $69.4M | 2.32% | +626,958 | New |
| Goldman Sachs Group Inc | 630,621 | $69.8M | 0.01% | +157,446+33.3% | Added |
| Lakewood Capital Management, LP | 747,700 | $82.7M | 5.31% | +415,200+124.9% | Added |
| SEI Investments Co | 757,489 | $83.8M | 0.08% | −28,448−3.6% | Reduced |
| Franklin Resources Inc | 816,085 | $86.5M | 0.02% | −2,177,251−72.7% | Reduced |
| Dimensional Fund Advisors LP | 788,828 | $87.3M | 0.02% | +265,858+50.8% | Added |
| Boston Partners | 835,139 | $92.4M | 0.10% | −423,764−33.7% | Reduced |
| Holocene Advisors, LP | 840,845 | $93.0M | 0.23% | +678,862+419.1% | Added |
| Earnest Partners LLC | 885,790 | $98.0M | 0.40% | −4,286−0.5% | Reduced |
| Kempen Capital Management N.V. | 918,713 | $101.7M | 0.89% | +175,165+23.6% | Added |
| Lyrical Asset Management LP | 938,204 | $103.8M | 1.58% | −29,757−3.1% | Reduced |