ICON PLC ICLR
SHS · Common Stock · CUSIP G4705A100
- SectorHealth care
- IndustryServices-Commercial Physical & Biological Research
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($73.1m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $312.96. Options: 9 managers hold calls ($36.6m notional), 8 hold puts ($20.4m).
Trends to Q2 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 487 |
| Q4 2022 | 527 |
| Q1 2023 | 536 |
| Q2 2023 | 531 |
| Q3 2023 | 554 |
| Q4 2023 | 601 |
| Q1 2024 | 646 |
| Q2 2024 | 674 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 238 | 253 |
| Q1 2023 | 261 | 233 |
| Q2 2023 | 246 | 264 |
| Q3 2023 | 240 | 244 |
| Q4 2023 | 262 | 267 |
| Q1 2024 | 305 | 280 |
| Q2 2024 | 332 | 282 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $20.9m | $16.6m | 0.80 |
| Q4 2023 | $17.6m | $18.4m | 1.04 |
| Q1 2024 | $25.7m | $28.1m | 1.09 |
| Q2 2024 | $36.6m | $20.4m | 0.56 |
Biggest buyers
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +875.4k |
| CITADEL ADVISORS LLC | Added | +474.0k |
| Mawer Investment Management Ltd. | New | +382.0k |
| Point72 Asset Management, L.P. | Added | +347.2k |
| GOLDMAN SACHS GROUP INC | Added | +292.5k |
| MILLENNIUM MANAGEMENT LLC | Added | +262.1k |
| JANE STREET GROUP, LLC | Added | +243.5k |
| BANK OF AMERICA CORP /DE/ | Added | +232.3k |
| NORGES BANK | Added | +228.9k |
| HRT FINANCIAL LP | New | +208.0k |
Biggest sellers
| STATE STREET CORP | Reduced | -813.7k |
| BlackRock Inc. | Reduced | -710.5k |
| MORGAN STANLEY | Reduced | -666.4k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -457.8k |
| WASATCH ADVISORS LP | Reduced | -448.7k |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -352.1k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Reduced | -310.0k |
| Capital Research Global Investors | Reduced | -300.2k |
| Nuveen Asset Management, LLC | Reduced | -216.5k |
| COMGEST GLOBAL INVESTORS S.A.S. | Reduced | -210.8k |
Biggest calls
| Calamos Advisors LLC | Reduced | $11.8m35.1k shares |
| CITADEL ADVISORS LLC | Added | $10.5m33.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $6.9m22.0k shares |
| Walleye Capital LLC | Added | $5.7m18.1k shares |
| JANE STREET GROUP, LLC | Reduced | $815.0k2.6k shares |
| WOLVERINE TRADING, LLC | Added | $532.9k1.7k shares |
| SIMPLEX TRADING, LLC | Reduced | $344.0k1.1k shares |
| Walleye Trading LLC | Reduced | $62.7k200 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $7.3m23.2k shares |
| MILLENNIUM MANAGEMENT LLC | Added | $4.7m15.0k shares |
| Walleye Capital LLC | Added | $4.4m14.1k shares |
| CITADEL ADVISORS LLC | Added | $2.3m7.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $752.0k2.4k shares |
| Walleye Trading LLC | Reduced | $658.3k2.1k shares |
| WOLVERINE TRADING, LLC | Added | $344.8k1.1k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Artisan Partners Limited Partnership 13G · institution +1.9 pts · filed 2026-03-06 | 10.9% |
| WELLINGTON MANAGEMENT GROUP LLP 13G · institution +1.7 pts · filed 2026-05-15 | 7.7% |
| Invesco Ltd. 13G · institution +1.8 pts · filed 2026-08-13 | 6.9% |
| FMR LLC 13G · institution +1.4 pts · filed 2026-08-06 | 6.9% |
| HARRIS ASSOCIATES L P 13G · institution new · filed 2026-05-15 | 5.7% |
Fell to 5% or below in the last year: ORBIS INVESTMENT MANAGEMENT LTD (0.0%, 2026-05-15)
Insider purchases and sales in Q2 2024
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
None reported in Q2 2024.
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| WCM INVESTMENT MANAGEMENT, LLC 4.94% of their portfolio | 6.7m $2.1bn | Reduced -44.3k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.48% of their portfolio | 5.0m $1.6bn | Reduced -310.0k |
| WELLINGTON MANAGEMENT GROUP LLP 0.15% of their portfolio | 2.8m $865.1m | Reduced -457.8k |
| Ninety One UK Ltd 2.32% of their portfolio | 2.7m $839.6m | Added +32.5k |
| Boston Partners 1.02% of their portfolio | 2.6m $822.6m | Reduced -9.4k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.10% of their portfolio | 2.6m $821.0m | Added +875.4k |
| LAZARD ASSET MANAGEMENT LLC 0.96% of their portfolio | 2.4m $767.2m | Reduced -147.2k |
| FMR LLC 0.04% of their portfolio | 2.2m $688.5m | Reduced -105.8k |
| Capital Research Global Investors 0.13% of their portfolio | 1.9m $595.6m | Reduced -300.2k |
| Invesco Ltd. 0.12% of their portfolio | 1.8m $566.5m | Reduced -32.8k |
| JPMORGAN CHASE & CO 0.02% of their portfolio | 1.8m $550.3m | Reduced -7.1k |
| Clearbridge Investments, LLC 0.38% of their portfolio | 1.5m $472.9m | Reduced -166.3k |
| ALLIANCEBERNSTEIN L.P. 0.15% of their portfolio | 1.4m $439.5m | Reduced -72.6k |
| CITADEL ADVISORS LLC 0.42% of their portfolio | 1.4m $426.4m | Added +474.0k |
| FRANKLIN RESOURCES INC 0.13% of their portfolio | 1.3m $417.2m | Reduced -43.5k |
| COMGEST GLOBAL INVESTORS S.A.S. 5.30% of their portfolio | 1.2m $385.7m | Reduced -210.8k |
| BlueSpruce Investments, LP 6.96% of their portfolio | 1.2m $378.7m | Reduced -73.1k |
| Sustainable Growth Advisers, LP 1.66% of their portfolio | 1.2m $375.4m | Reduced -17.3k |
| JANUS HENDERSON GROUP PLC 0.20% of their portfolio | 1.2m $374.5m | Added +17.7k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.95% of their portfolio | 1.2m $363.2m | Added +10.6k |
| BlackRock Inc. 0.01% of their portfolio | 1.2m $361.6m | Reduced -710.5k |
| BANK OF AMERICA CORP /DE/ 0.03% of their portfolio | 1.1m $355.0m | Added +232.3k |
| AMERICAN CENTURY COMPANIES INC 0.22% of their portfolio | 1.1m $354.4m | Added +145.3k |
| POLEN CAPITAL MANAGEMENT LLC 0.85% of their portfolio | 1.1m $340.1m | Reduced -13.2k |
| VICTORY CAPITAL MANAGEMENT INC 0.34% of their portfolio | 1.1m $335.7m | Added +50.4k |
| GOLDMAN SACHS GROUP INC 0.06% of their portfolio | 983.8k $308.4m | Added +292.5k |
| BAMCO INC /NY/ 0.87% of their portfolio | 971.9k $304.7m | Added +1.9k |
| NORGES BANK 0.05% of their portfolio | 969.9k $304.0m | Added +228.9k |
| MILLENNIUM MANAGEMENT LLC 0.22% of their portfolio | 865.4k $271.3m | Added +262.1k |
| NEUBERGER BERMAN GROUP LLC 0.20% of their portfolio | 762.6k $239.0m | Reduced -29.9k |
| FIL Ltd 0.23% of their portfolio | 743.0k $232.9m | Reduced -68.8k |
| BESSEMER GROUP INC 0.41% of their portfolio | 741.9k $232.6m | Added +4.7k |
| Trinity Street Asset Management LLP 19.30% of their portfolio | 697.5k $218.7m | Reduced -38.9k |
| NORTHERN TRUST CORP 0.04% of their portfolio | 694.2k $217.6m | Added +63.9k |
| AustralianSuper Pty Ltd 1.10% of their portfolio | 608.7k $190.8m | Added +85.9k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.81% of their portfolio | 527.8k $165.4m | Reduced -9.1k |
| EARNEST PARTNERS LLC 0.77% of their portfolio | 522.6k $163.8m | Reduced -12.3k |
| ENVESTNET ASSET MANAGEMENT INC 0.06% of their portfolio | 522.2k $163.7m | Added +45.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.09% of their portfolio | 460.5k $144.3m | Added +15.0k |
| Stephens Investment Management Group LLC 2.02% of their portfolio | 460.0k $144.2m | Added +10.8k |
| Point72 Asset Management, L.P. 0.45% of their portfolio | 447.3k $140.2m | Added +347.2k |
| CCLA Investment Management 2.15% of their portfolio | 445.0k $139.5m | Reduced -55.1k |
| AMERICAN CAPITAL MANAGEMENT INC 4.41% of their portfolio | 419.8k $131.6m | Reduced -19.9k |
| Mawer Investment Management Ltd. 0.57% of their portfolio | 382.0k $119.7m | New |
| Junto Capital Management LP 2.51% of their portfolio | 363.9k $114.1m | Added +158.7k |
| CIBC Private Wealth Group LLC 0.22% of their portfolio | 360.5k $115.7m | Reduced -89.8k |
| First Pacific Advisors, LP 1.51% of their portfolio | 356.7k $111.8m | Added +6.1k |
| Baird Financial Group, Inc. 0.20% of their portfolio | 307.0k $96.2m | Reduced -16.2k |
| STATE STREET CORP 0.00% of their portfolio | 289.4k $90.7m | Reduced -813.7k |
| Legal & General Group Plc 0.03% of their portfolio | 286.2k $89.7m | Added +2.1k |
| MORGAN STANLEY 0.01% of their portfolio | 263.3k $82.5m | Reduced -666.4k |
| JANE STREET GROUP, LLC 0.09% of their portfolio | 258.0k $80.9m | Added +243.5k |
| Ninety One North America, Inc. 4.05% of their portfolio | 255.7k $80.2m | Reduced -13.7k |
| SEI INVESTMENTS CO 0.11% of their portfolio | 241.3k $75.6m | Reduced -11.6k |
| VANGUARD GROUP INC 0.00% of their portfolio | 230.5k $72.2m | Reduced -66.3k |
| RENAISSANCE TECHNOLOGIES LLC 0.12% of their portfolio | 226.0k $70.8m | Reduced -45.1k |
| Artemis Investment Management LLP 0.91% of their portfolio | 215.6k $67.6m | Added +11.7k |
| CITIGROUP INC 0.06% of their portfolio | 212.7k $66.7m | Added +121.7k |
| HRT FINANCIAL LP 0.37% of their portfolio | 208.0k $65.2m | New |
| TD Asset Management Inc 0.06% of their portfolio | 206.1k $64.6m | Added +7.1k |
| AMERIPRISE FINANCIAL INC 0.02% of their portfolio | 189.1k $59.3m | Reduced -25.5k |
| Qube Research & Technologies Ltd 0.11% of their portfolio | 187.3k $58.7m | Added +177.6k |
| TimesSquare Capital Management, LLC 0.91% of their portfolio | 185.6k $58.2m | Reduced -3.4k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.06% of their portfolio | 181.8k $57.0m | Unchanged |
| FARALLON CAPITAL MANAGEMENT, L.L.C. 0.33% of their portfolio | 178.2k $55.9m | Reduced -1.5k |
| Grandeur Peak Global Advisors, LLC 4.41% of their portfolio | 176.1k $55.2m | Added +420 |
| Corient Private Wealth LP 0.10% of their portfolio | 175.3k $54.9m | Added +58.3k |
| BROWN CAPITAL MANAGEMENT LLC 1.10% of their portfolio | 174.2k $54.6m | Added +164 |
| ORBIMED ADVISORS LLC 1.08% of their portfolio | 174.1k $54.6m | Unchanged |
| Two Creeks Capital Management, LP 3.35% of their portfolio | 171.8k $53.9m | Reduced -59.1k |
| RAYMOND JAMES & ASSOCIATES 0.04% of their portfolio | 171.7k $53.8m | Added +8.9k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 171.0k $53.6m | Added +40.6k |
| AXIOM INVESTORS LLC /DE 0.47% of their portfolio | 170.9k $53.6m | Added +18.6k |
| MACQUARIE GROUP LTD 0.06% of their portfolio | 170.6k $53.5m | Added +34.4k |
| State of Tennessee, Department of Treasury 0.19% of their portfolio | 162.1k $50.8m | Added +1.7k |
| California Public Employees Retirement System 0.04% of their portfolio | 159.6k $50.0m | Added +8.7k |
| Clark Capital Management Group, Inc. 0.36% of their portfolio | 155.9k $48.9m | Added +3.4k |
| Pertento Partners LLP 6.16% of their portfolio | 155.2k $48.6m | Added +113.5k |
| Pacific Capital Partners Ltd 1.70% of their portfolio | 154.4k $2.6m | Unchanged |
| NATIXIS ADVISORS, LLC 0.10% of their portfolio | 153.7k $48.2m | Reduced -93.0k |
| Eagle Health Investments LP 8.38% of their portfolio | 149.6k $46.9m | Unchanged |
| HUDSON EDGE INVESTMENT PARTNERS INC. 9.03% of their portfolio | 149.1k $46.7m | Reduced -5.4k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.06% of their portfolio | 141.0k $44.2m | Reduced -38.7k |
| ExodusPoint Capital Management, LP 0.48% of their portfolio | 140.9k $44.2m | Added +119.2k |
| Employees Retirement System of Texas 0.41% of their portfolio | 140.0k $43.9m | Unchanged |
| Walleye Capital LLC 0.45% of their portfolio | 135.6k $42.5m | Added +61.0k |
| Balyasny Asset Management L.P. 0.11% of their portfolio | 132.1k $41.4m | Added +70.2k |
| Aberdeen Group plc 0.08% of their portfolio | 126.7k $39.7m | Reduced -3.9k |
| THORNBURG INVESTMENT MANAGEMENT INC 0.54% of their portfolio | 122.7k $38.5m | Added +3.9k |
| Polar Capital Holdings Plc 0.23% of their portfolio | 122.6k $38.4m | Added +25.5k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 120.6k $37.8m | Reduced -133.0k |
| Liontrust Investment Partners LLP 0.53% of their portfolio | 119.7k $37.5m | Added +19.5k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.06% of their portfolio | 118.6k $37.2m | Added +93.6k |
| PFM Health Sciences, LP 1.99% of their portfolio | 116.5k $36.5m | Added +806 |
| AXA S.A. 0.05% of their portfolio | 111.5k $35.0m | Added +55.0k |
| RENAISSANCE GROUP LLC 1.32% of their portfolio | 107.8k $33.8m | Reduced -15.5k |
| MIRABELLA FINANCIAL SERVICES LLP 2.38% of their portfolio | 104.2k $32.7m | New |
| Amundi 0.01% of their portfolio | 102.5k $32.6m | Reduced -166.1k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 100.8k $31.6m | Reduced -24.7k |
| Orbis Allan Gray Ltd 0.19% of their portfolio | 99.1k $31.1m | New |