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, Q3 2021
Institutional positions in Icon PLC as of Sep 30, 2021. 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
- 510
- +68 vs. Q2 2021
- Shares held
- 73.5M
- +14.0M (+23.4%) vs. Q2 2021
- Total value
- $19.3B
- +$6.94B (+56.4%) vs. Q2 2021
- New holders
- 122
- 209 more added
- Sold out
- 54
- 113 more reduced
7 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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, Q3 2021
Shares, value and share of portfolio for each institution holding Icon PLC; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| American Century Companies Inc | 1,946,072 | $509.9M | 0.35% | +420,801+27.6% | Added |
| Acadian Asset Management LLC | 1,993,227 | $522.2M | 1.99% | −37,424−1.8% | Reduced |
| Boston Partners | 2,155,437 | $564.8M | 0.72% | +1,046,263+94.3% | Added |
| Janus Henderson Group PLC | 2,236,444 | $586.1M | 0.26% | +1,524,846+214.3% | Added |
| Clearbridge Investments, LLC | 2,363,455 | $619.3M | 0.44% | +287,705+13.9% | Added |
| Comgest Global Investors S.A.S. | 2,813,638 | $737.2M | 9.65% | −130,904−4.4% | Reduced |
| Wellington Management Group LLP | 5,048,625 | $1.32B | 0.22% | +1,288,493+34.3% | Added |
| WCM Investment Management, LLC | 7,160,289 | $1.88B | 4.34% | +3,062,366+74.7% | Added |
| Massachusetts Financial Services Co | 7,461,705 | $1.96B | 0.57% | +1,343,423+22.0% | Added |
| Sofos Investments, Inc. | 62 | – | – | +62 | New |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −144,326−100.0% | Sold out |
| Segantii Capital Management Ltd | 0 | $0 | 0.00% | −121,174−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −86,117−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −43,500−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −41,349−100.0% | Sold out |
| Weiss Multi-Strategy Advisers LLC | 0 | $0 | 0.00% | −39,516−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −32,771−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −29,530−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −23,748−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −23,373−100.0% | Sold out |
| Sciencast Management LP | 0 | $0 | 0.00% | −21,942−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −20,448−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −19,491−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −19,380−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −17,616−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −14,544−100.0% | Sold out |
| Marshall Wace North America L.P. | 0 | $0 | 0.00% | −14,112−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −13,800−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −9,615−100.0% | Sold out |
| FORA Capital, LLC | 0 | $0 | 0.00% | −9,159−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −7,400−100.0% | Sold out |
| Brown Advisory Securities, LLC | 0 | $0 | 0.00% | −7,200−100.0% | Sold out |
| Jefferies Group LLC | 0 | $0 | 0.00% | −6,862−100.0% | Sold out |
| Laurion Capital Management LP | 0 | $0 | 0.00% | −6,250−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −5,304−100.0% | Sold out |
| Quantitative Systematic Strategies LLC | 0 | $0 | 0.00% | −5,227−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −5,057−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −4,764−100.0% | Sold out |
| Quantamental Technologies LLC | 0 | $0 | 0.00% | −2,790−100.0% | Sold out |
| GW Henssler & Associates Ltd | 0 | $0 | 0.00% | −2,659−100.0% | Sold out |
| Quantitative Investment Management, LLC | 0 | $0 | 0.00% | −2,467−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −2,351−100.0% | Sold out |
| qPULA Trading Management LP | 0 | $0 | 0.00% | −2,200−100.0% | Sold out |
| Standard Family Office LLC | 0 | $0 | 0.00% | −2,019−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −1,938−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −1,802−100.0% | Sold out |
| Harvest Management LLC | 0 | $0 | 0.00% | −1,590−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −1,462−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −1,455−100.0% | Sold out |
| Robeco Institutional Asset Management B.V. | 0 | $0 | 0.00% | −1,370−100.0% | Sold out |
| Paloma Partners Management Co | 0 | $0 | 0.00% | −1,268−100.0% | Sold out |
| Shay Capital LLC | 0 | $0 | 0.00% | −1,049−100.0% | Sold out |
| QCM Cayman, Ltd. | 0 | $0 | 0.00% | −975−100.0% | Sold out |
| Cutler Group LP | 0 | $0 | 0.00% | −900−100.0% | Sold out |
| Schroder Investment Management Group | 0 | $0 | 0.00% | −433−100.0% | Sold out |
| Red Door Wealth Management, LLC | 0 | $0 | 0.00% | −327−100.0% | Sold out |
| Brewin Dolphin Wealth Management Ltd | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Simon Quick Advisors, LLC | 0 | $0 | 0.00% | −96−100.0% | Sold out |
| Enterprise Financial Services Corp | 0 | $0 | 0.00% | −67−100.0% | Sold out |
| Accel Wealth Management | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| Manchester Capital Management LLC | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| Capital Analysts, LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| SkyView Investment Advisors, LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Ford Financial Group, LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| QS Investors, LLC | – | – | – | – | Not filed |
| Cipher Capital LP | – | – | – | – | Not filed |
| Running Oak Capital LLC | – | – | – | – | Not filed |
| Castleview Partners, LLC | – | – | – | – | Not filed |
| San Francisco Sentry Investment Group (Ca) | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |
| First Horizon Corp | – | – | – | – | Not filed |