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 |
|---|---|---|---|---|---|
| Artisan Partners Limited Partnership | 8,278,945 | $916.1M | 1.49% | +1,404,968+20.4% | Added |
| Wellington Management Group LLP | 5,913,037 | $654.3M | 0.12% | +1,562,287+35.9% | Added |
| Harris Associates L PSuperinvestorHarris Associates (Oakmark) | 4,351,317 | $481.5M | 0.64% | +1,841,151+73.3% | Added |
| FMR LLC | 4,174,006 | $461.9M | 0.02% | +1,076,111+34.7% | Added |
| Invesco Ltd. | 3,878,869 | $429.2M | 0.04% | +121,973+3.2% | Added |
| Principal Financial Group Inc | 3,311,771 | $366.5M | 0.20% | +310,236+10.3% | Added |
| Brave Warrior Advisors, LLC | 2,996,811 | $331.6M | 8.21% | +2,996,811 | New |
| Massachusetts Financial Services Co | 2,727,824 | $304.9M | 0.10% | +370,791+15.7% | Added |
| Alliancebernstein L.P. | 1,344,595 | $245.0M | 0.08% | +72,133+5.7% | Added |
| Sachem Head Capital Management LP | 2,105,000 | $232.9M | 5.61% | +2,105,000 | New |
| Greenhaven Associates IncSuperinvestorGreenhaven Associates | 2,002,411 | $221.6M | 3.65% | +1,985,017+11,412.1% | Added |
| Ruane, Cunniff & Goldfarb L.P. | 1,634,611 | $180.9M | 3.00% | −44,979−2.7% | Reduced |
| Brandes Investment Partners, LP | 1,435,053 | $158.8M | 1.12% | +658,321+84.8% | Added |
| Madison Avenue Partners, LP | 1,282,838 | $142.0M | 6.17% | +1,282,838 | New |
| Trinity Street Asset Management LLP | 1,208,148 | $133.7M | 9.17% | +135,720+12.7% | Added |
| D. E. Shaw & Co., Inc. | 1,198,555 | $132.6M | 0.10% | +545,236+83.5% | Added |
| 1832 Asset Management L.P. | 1,193,240 | $132.0M | 0.17% | −11,087−0.9% | Reduced |
| Capital World Investors | 1,104,831 | $122.3M | 0.02% | −391,648−26.2% | Reduced |
| Equity Investment Corp | 1,096,395 | $121.3M | 2.38% | +473,207+75.9% | Added |
| First Pacific Advisors, LP | 991,075 | $109.7M | 1.54% | +10,271+1.0% | Added |
| Lyrical Asset Management LP | 938,204 | $103.8M | 1.58% | −29,757−3.1% | Reduced |
| Kempen Capital Management N.V. | 918,713 | $101.7M | 0.89% | +175,165+23.6% | Added |
| Earnest Partners LLC | 885,790 | $98.0M | 0.40% | −4,286−0.5% | Reduced |
| Holocene Advisors, LP | 840,845 | $93.0M | 0.23% | +678,862+419.1% | Added |
| Boston Partners | 835,139 | $92.4M | 0.10% | −423,764−33.7% | Reduced |
| Dimensional Fund Advisors LP | 788,828 | $87.3M | 0.02% | +265,858+50.8% | Added |
| Franklin Resources Inc | 816,085 | $86.5M | 0.02% | −2,177,251−72.7% | Reduced |
| SEI Investments Co | 757,489 | $83.8M | 0.08% | −28,448−3.6% | Reduced |
| Lakewood Capital Management, LP | 747,700 | $82.7M | 5.31% | +415,200+124.9% | Added |
| Goldman Sachs Group Inc | 630,621 | $69.8M | 0.01% | +157,446+33.3% | Added |
| Sound Shore Management Inc | 626,958 | $69.4M | 2.32% | +626,958 | New |
| Thrivent Financial for Lutherans | 622,366 | $68.9M | 0.13% | +338,864+119.5% | Added |
| UBS Group AG | 612,265 | $67.8M | 0.01% | +73,628+13.7% | Added |
| Stephens Investment Management Group LLC | 599,176 | $66.3M | 0.91% | +56,180+10.3% | Added |
| Bank of America Corp | 543,487 | $60.1M | 0.00% | −66,178−10.9% | Reduced |
| Russell Investments Group, Ltd. | 514,306 | $56.9M | 0.06% | +233,371+83.1% | Added |
| State Street Corp | 457,209 | $50.6M | 0.00% | +96,003+26.6% | Added |
| Impactive Capital LP | 450,540 | $49.9M | 3.62% | +450,540 | New |
| Bamco Inc | 426,805 | $47.2M | 0.14% | −107,443−20.1% | Reduced |
| BlackRock, Inc. | 413,596 | $45.8M | 0.00% | +35,753+9.5% | Added |
| Standard Life Aberdeen plc | 399,290 | $44.2M | 0.07% | +333,227+504.4% | Added |
| River Road Asset Management, LLC | 369,715 | $40.9M | 0.46% | −105,698−22.2% | Reduced |
| Eagle Health Investments LP | 358,500 | $39.7M | 8.33% | +111,410+45.1% | Added |
| New York State Common Retirement Fund | 345,711 | $38.3M | 0.05% | +99,345+40.3% | Added |
| Maple Rock Capital Partners Inc. | 335,300 | $37.1M | 1.21% | +335,300 | New |
| HGK Asset Management Inc | 319,003 | $35.3M | 5.16% | +58,554+22.5% | Added |
| Sio Capital Management, LLC | 306,358 | $33.9M | 4.89% | +179,156+140.8% | Added |
| Morgan Stanley | 293,142 | $32.4M | 0.00% | −180,497−38.1% | Reduced |
| Zuckerman Investment Group, LLC | 280,992 | $31.1M | 2.92% | +125,349+80.5% | Added |
| Raymond James Financial Inc | 261,432 | $28.9M | 0.01% | +70,325+36.8% | Added |
| Citadel Advisors LLC | 251,607 | $27.8M | 0.02% | +209,642+499.6% | Added |
| Perry Creek Capital LP | 245,000 | $27.1M | 16.89% | +150,000+157.9% | Added |
| CIBC Bancorp USA Inc. | 228,953 | $25.4M | 0.03% | +228,953 | New |
| Diamond Hill Capital Management Inc | 220,337 | $24.4M | 0.15% | −18,805−7.9% | Reduced |
| Walleye Capital LLC | 196,571 | $21.8M | 0.13% | +62,290+46.4% | Added |
| Soleus Capital Management, L.P. | 192,000 | $21.2M | 0.86% | +192,000 | New |
| Legal & General Group Plc | 175,394 | $19.4M | 0.00% | +27,679+18.7% | Added |
| Fisher Funds Management LTD | 174,291 | $19.3M | 0.57% | −338,811−66.0% | Reduced |
| Brown Advisory Inc | 173,379 | $19.2M | 0.03% | +81,023+87.7% | Added |
| Brown Capital Management LLC | 158,018 | $17.5M | 2.48% | +33,380+26.8% | Added |
| Distillate Capital Partners LLC | 153,865 | $17.0M | 0.90% | +87,725+132.6% | Added |
| Royal Bank of Canada | 153,728 | $17.0M | 0.00% | +62,225+68.0% | Added |
| Manufacturers Life Insurance Company, The | 150,794 | $16.7M | 0.01% | −91,710−37.8% | Reduced |
| Moore Capital Management, LP | 147,208 | $16.3M | 0.59% | +90,018+157.4% | Added |
| Envestnet Asset Management Inc | 145,263 | $16.1M | 0.00% | +30,118+26.2% | Added |
| Hyperion Capital Advisors LP | 142,455 | $15.8M | 7.59% | +76,434+115.8% | Added |
| Balyasny Asset Management LLC | 136,416 | $15.1M | 0.03% | +60,888+80.6% | Added |
| Eldred Rock Partners, LLC | 134,469 | $14.9M | 3.79% | +81,398+153.4% | Added |
| California Public Employees Retirement System | 120,297 | $13.3M | 0.01% | −35,755−22.9% | Reduced |
| CI Private Wealth, LLC | 115,291 | $12.8M | 0.02% | +66,154+134.6% | Added |
| Philosophy Capital Management LLC | 111,015 | $12.3M | 1.43% | −33,040−22.9% | Reduced |
| Zurich Insurance Group Ltd | 109,926 | $12.2M | 0.10% | +109,926 | New |
| Vident Advisory, LLC | 109,046 | $12.1M | 0.10% | +67,987+165.6% | Added |
| Running Oak Capital LLC | 108,647 | $12.0M | 1.62% | +17,175+18.8% | Added |
| Frontier Capital Management Co LLC | 108,467 | $12.0M | 0.12% | +35,723+49.1% | Added |
| Aviva PLC | 106,512 | $11.8M | 0.02% | −2,562−2.3% | Reduced |
| Kingdon Capital Management, L.L.C. | 105,300 | $11.7M | 1.95% | +54,700+108.1% | Added |
| Canada Pension Plan Investment Board | 102,743 | $11.4M | 0.01% | −73,998−41.9% | Reduced |
| Ameriprise Financial Inc | 102,237 | $11.3M | 0.00% | −81,863−44.5% | Reduced |
| Polar Capital Holdings Plc | 100,460 | $11.1M | 0.05% | +100,460 | New |
| Steamboat Capital Partners, LLC | 100,299 | $11.1M | 2.76% | +100,299 | New |
| Stanley Capital Management, LLC | 100,000 | $11.1M | 1.85% | +100,000 | New |
| Bank of Montreal | 96,404 | $10.7M | 0.00% | +34,539+55.8% | Added |
| Geode Capital Management, LLC | 95,880 | $10.6M | 0.00% | +4,207+4.6% | Added |
| Meridiem Capital Partners LP | 93,878 | $10.4M | 0.68% | +93,878 | New |
| Charles Schwab Investment Management Inc | 87,381 | $9.67M | 0.00% | +32,917+60.4% | Added |
| Cambiar Investors LLC | 87,045 | $9.63M | 0.45% | +12,223+16.3% | Added |
| State of Michigan Retirement System | 85,070 | $9.41M | 0.05% | 00.0% | Unchanged |
| Farmers & Merchants Investments Inc | 83,021 | $9.19M | 0.25% | +2,446+3.0% | Added |
| Allspring Global Investments Holdings, LLC | 82,135 | $9.15M | 0.02% | −998,057−92.4% | Reduced |
| Janus Henderson Group PLC | 82,061 | $9.08M | 0.00% | −166,218−66.9% | Reduced |
| Leith Wheeler Investment Counsel Ltd. | 81,408 | $9.01M | 0.74% | +81,408 | New |
| Foresight Group Ltd Liability Partnership | 80,660 | $8.93M | 1.58% | −233−0.3% | Reduced |
| Parthenon LLC | 79,203 | $8.76M | 1.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 73,359 | $8.12M | 0.00% | −31,204−29.8% | Reduced |
| Eversept Partners, LP | 68,688 | $7.60M | 0.50% | −27,144−28.3% | Reduced |
| Muhlenkamp & Co Inc | 66,005 | $7.30M | 1.92% | −7,860−10.6% | Reduced |
| Tudor Investment Corp Et Al | 65,375 | $7.23M | 0.04% | +65,375 | New |
| Trexquant Investment LP | 62,628 | $6.93M | 0.05% | +62,628 | New |
| 683 Capital Management, LLC | 62,000 | $6.86M | 0.64% | +62,000 | New |