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 ($9.5m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $250.31. Options: 10 managers hold calls ($16.6m notional), 12 hold puts ($9.0m).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 487 |
| Q4 2022 | 527 |
| Q1 2023 | 536 |
| Q2 2023 | 531 |
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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $6.4m | $4.0m | 0.62 |
| Q4 2022 | $19.5m | $2.1m | 0.11 |
| Q1 2023 | $18.9m | $5.3m | 0.28 |
| Q2 2023 | $16.6m | $9.0m | 0.54 |
Biggest buyers
| BlackRock Inc. | Added | +1.5m |
| BlueSpruce Investments, LP | New | +1.1m |
| STATE STREET CORP | Added | +818.8k |
| LAZARD ASSET MANAGEMENT LLC | Added | +456.7k |
| Ninety One UK Ltd | Added | +407.6k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +392.0k |
| Sustainable Growth Advisers, LP | Added | +388.5k |
| Point72 Asset Management, L.P. | Added | +387.2k |
| Capital Research Global Investors | Added | +340.0k |
| MARSHALL WACE, LLP | Added | +338.0k |
Biggest sellers
| FMR LLC | Reduced | -2.8m |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Reduced | -1.5m |
| Perpetual Ltd | Reduced | -802.7k |
| Artisan Partners Limited Partnership | Sold out | -670.0k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -363.2k |
| Clearbridge Investments, LLC | Reduced | -331.2k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | -288.0k |
| AMERICAN CENTURY COMPANIES INC | Reduced | -263.6k |
| JENNISON ASSOCIATES LLC | Reduced | -260.8k |
| STEADFAST CAPITAL MANAGEMENT LP | Reduced | -211.4k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $7.5m29.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $4.3m17.0k shares |
| Walleye Trading LLC | Reduced | $2.1m8.2k shares |
| SIMPLEX TRADING, LLC | Added | $825.0k3.3k shares |
| Walleye Capital LLC | Added | $750.6k3.0k shares |
| JANE STREET GROUP, LLC | New | $475.4k1.9k shares |
| Cubist Systematic Strategies, LLC | New | $475.4k1.9k shares |
| PEAK6 Investments LLC | Added | $325.3k1.3k shares |
| GROUP ONE TRADING LLC | Unchanged | $25.0k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $2.4m9.4k shares |
| Walleye Trading LLC | Added | $1.4m5.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $1.3m5.2k shares |
| Walleye Capital LLC | Added | $925.7k3.7k shares |
| Cubist Systematic Strategies, LLC | New | $875.7k3.5k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $500.4k2.0k shares |
| WOLVERINE TRADING, LLC | New | $461.0k1.9k shares |
| Verition Fund Management LLC | New | $450.4k1.8k shares |
| PEAK6 Investments LLC | Reduced | $375.3k1.5k shares |
| JANE STREET GROUP, LLC | New | $350.3k1.4k 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 2023
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 2023.
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.55% of their portfolio | 6.7m $1.7bn | Reduced -1.5m |
| WCM INVESTMENT MANAGEMENT, LLC 4.38% of their portfolio | 5.8m $1.5bn | Added +37.9k |
| LAZARD ASSET MANAGEMENT LLC 1.06% of their portfolio | 3.4m $859.3m | Added +456.7k |
| Boston Partners 1.04% of their portfolio | 3.1m $776.2m | Added +23.7k |
| FMR LLC 0.06% of their portfolio | 3.0m $762.3m | Reduced -2.8m |
| WELLINGTON MANAGEMENT GROUP LLP 0.13% of their portfolio | 2.8m $689.1m | Added +392.0k |
| Ninety One UK Ltd 1.95% of their portfolio | 2.7m $669.1m | Added +407.6k |
| FRANKLIN RESOURCES INC 0.26% of their portfolio | 2.2m $541.5m | Added +22.6k |
| Capital Research Global Investors 0.14% of their portfolio | 2.1m $521.0m | Added +340.0k |
| BlackRock Inc. 0.01% of their portfolio | 1.9m $468.7m | Added +1.5m |
| Invesco Ltd. 0.11% of their portfolio | 1.7m $433.4m | Added +166.7k |
| AMERICAN CENTURY COMPANIES INC 0.32% of their portfolio | 1.7m $419.9m | Reduced -263.6k |
| COMGEST GLOBAL INVESTORS S.A.S. 6.49% of their portfolio | 1.6m $388.4m | Added +225.0k |
| FIL Ltd 0.43% of their portfolio | 1.5m $378.6m | Added +191.4k |
| ALLIANCEBERNSTEIN L.P. 0.15% of their portfolio | 1.5m $373.9m | Reduced -191.0k |
| POLEN CAPITAL MANAGEMENT LLC 0.91% of their portfolio | 1.5m $366.8m | Reduced -20.7k |
| CIBC Private Wealth Group LLC 0.38% of their portfolio | 1.4m $352.1m | Added +315.8k |
| Sustainable Growth Advisers, LP 1.66% of their portfolio | 1.4m $350.7m | Added +388.5k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 2.19% of their portfolio | 1.4m $344.6m | Added +11.9k |
| BlueSpruce Investments, LP 4.92% of their portfolio | 1.1m $285.7m | New |
| Clearbridge Investments, LLC 0.25% of their portfolio | 1.1m $276.7m | Reduced -331.2k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.85% of their portfolio | 1.1m $265.1m | Reduced -288.0k |
| BANK OF AMERICA CORP /DE/ 0.03% of their portfolio | 1.0m $251.2m | Reduced -99.1k |
| BAMCO INC /NY/ 0.68% of their portfolio | 987.8k $247.1m | Reduced -212 |
| STATE STREET CORP 0.01% of their portfolio | 956.3k $239.3m | Added +818.8k |
| NEUBERGER BERMAN GROUP LLC 0.20% of their portfolio | 887.4k $222.0m | Reduced -31.9k |
| JANUS HENDERSON GROUP PLC 0.12% of their portfolio | 798.4k $199.8m | Reduced -39.9k |
| NORGES BANK 0.04% of their portfolio | 716.1k $179.2m | Reduced -23.3k |
| Trinity Street Asset Management LLP 19.27% of their portfolio | 694.7k $173.8m | Added +12.4k |
| GOLDMAN SACHS GROUP INC 0.04% of their portfolio | 690.9k $172.9m | Added +38.3k |
| RENAISSANCE TECHNOLOGIES LLC 0.25% of their portfolio | 689.2k $172.4m | Reduced -195.4k |
| MILLENNIUM MANAGEMENT LLC 0.17% of their portfolio | 642.3k $160.7m | Reduced -363.2k |
| EARNEST PARTNERS LLC 0.84% of their portfolio | 597.9k $149.6m | Added +79.6k |
| WASATCH ADVISORS LP 0.88% of their portfolio | 578.3k $144.7m | Added +984 |
| AMERICAN CAPITAL MANAGEMENT INC 4.88% of their portfolio | 561.6k $140.5m | Reduced -94.8k |
| Point72 Asset Management, L.P. 0.47% of their portfolio | 537.8k $134.6m | Added +387.2k |
| NORTHERN TRUST CORP 0.03% of their portfolio | 536.6k $134.3m | Added +128.2k |
| Bank of New York Mellon Corp 0.03% of their portfolio | 536.5k $134.2m | Added +121.8k |
| AustralianSuper Pty Ltd 0.83% of their portfolio | 522.8k $130.8m | Reduced -25.1k |
| PRINCIPAL FINANCIAL GROUP INC 0.09% of their portfolio | 522.5k $130.7m | Added +28.7k |
| CCLA Investment Management 2.36% of their portfolio | 508.6k $132.3m | Reduced -14.2k |
| Stephens Investment Management Group LLC 1.86% of their portfolio | 475.4k $118.9m | Reduced -3.2k |
| MORGAN STANLEY 0.01% of their portfolio | 462.6k $115.7m | Added +255.7k |
| Baird Financial Group, Inc. 0.27% of their portfolio | 402.6k $100.7m | Reduced -2.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 399.3k $99.9m | Added +324.2k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 386.4k $96.7m | Added +10.0k |
| First Pacific Advisors, LP 1.28% of their portfolio | 351.0k $87.8m | Reduced -6.9k |
| Iron Triangle Partners LP 12.00% of their portfolio | 350.0k $87.6m | Added +160.0k |
| MARSHALL WACE, LLP 0.19% of their portfolio | 343.6k $86.0m | Added +338.0k |
| Grandeur Peak Global Advisors, LLC 5.78% of their portfolio | 338.3k $84.6m | Added +34.3k |
| Ninety One North America, Inc. 3.50% of their portfolio | 329.7k $82.5m | Added +58.3k |
| SEI INVESTMENTS CO 0.13% of their portfolio | 293.8k $73.5m | Reduced -22.2k |
| ENVESTNET ASSET MANAGEMENT INC 0.03% of their portfolio | 278.2k $69.6m | Reduced -50.8k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.09% of their portfolio | 275.4k $68.9m | Added +85.0k |
| Legal & General Group Plc 0.02% of their portfolio | 274.4k $68.6m | Reduced -3.8k |
| VANGUARD GROUP INC 0.00% of their portfolio | 272.6k $68.2m | Added +99.6k |
| Holocene Advisors, LP 0.29% of their portfolio | 268.8k $67.3m | New |
| AMERIPRISE FINANCIAL INC 0.02% of their portfolio | 259.3k $64.9m | Reduced -26.5k |
| Two Creeks Capital Management, LP 3.67% of their portfolio | 243.6k $60.9m | New |
| BROWN CAPITAL MANAGEMENT LLC 0.85% of their portfolio | 238.8k $59.7m | Added +3.1k |
| NATIXIS ADVISORS, LLC 0.18% of their portfolio | 237.8k $59.5m | Added +32.6k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 227.8k $57.0m | New |
| TimesSquare Capital Management, LLC 0.79% of their portfolio | 220.9k $55.3m | Added +13.3k |
| PFM Health Sciences, LP 2.15% of their portfolio | 213.6k $53.4m | Added +149.1k |
| Amundi 0.03% of their portfolio | 209.1k $50.8m | Added +23.2k |
| RAYMOND JAMES & ASSOCIATES 0.04% of their portfolio | 207.9k $52.0m | Reduced -20.6k |
| STEADFAST CAPITAL MANAGEMENT LP 1.26% of their portfolio | 188.5k $47.2m | Reduced -211.4k |
| Eagle Health Investments LP 8.71% of their portfolio | 186.2k $46.6m | Added +30.3k |
| Allspring Global Investments Holdings, LLC 0.07% of their portfolio | 175.9k $44.0m | Added +111.9k |
| Montanaro Asset Management Ltd 6.68% of their portfolio | 168.9k $42.3m | Reduced -10.5k |
| Nuveen Asset Management, LLC 0.01% of their portfolio | 161.9k $40.5m | New |
| California Public Employees Retirement System 0.03% of their portfolio | 149.7k $37.4m | Reduced -7.1k |
| THORNBURG INVESTMENT MANAGEMENT INC 0.61% of their portfolio | 149.5k $37.4m | Reduced -7.2k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 149.2k $37.3m | Reduced -3.3k |
| Magnetar Financial LLC 0.80% of their portfolio | 145.0k $36.3m | Reduced -5.5k |
| Clark Capital Management Group, Inc. 0.32% of their portfolio | 142.3k $35.6m | Added +3.0k |
| TD Asset Management Inc 0.04% of their portfolio | 138.8k $34.7m | Added +7.0k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 138.5k $34.7m | Reduced -41.6k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.05% of their portfolio | 137.5k $34.4m | Added +9.4k |
| AXIOM INVESTORS LLC /DE 0.50% of their portfolio | 135.5k $33.9m | Added +35.2k |
| Aberdeen Group plc 0.07% of their portfolio | 128.0k $32.0m | Added +1.2k |
| Corient Private Wealth LP 0.07% of their portfolio | 116.4k $29.1m | Added +55.6k |
| State of Tennessee, Department of Treasury 0.12% of their portfolio | 110.7k $27.7m | Added +2.6k |
| CITADEL ADVISORS LLC 0.03% of their portfolio | 110.6k $27.7m | Added +102.2k |
| ALTA CAPITAL MANAGEMENT LLC/ 1.86% of their portfolio | 108.6k $27.2m | Reduced -877 |
| Fiera Capital Corp 0.08% of their portfolio | 107.4k $26.9m | Reduced -2.3k |
| WILSON ASSET MANAGEMENT (INTERNATIONAL) PTY LTD 7.26% of their portfolio | 106.4k $26.6m | Added +25.3k |
| Employees Retirement System of Texas 0.36% of their portfolio | 105.0k $26.3m | Reduced -14.0k |
| RHUMBLINE ADVISERS 0.03% of their portfolio | 99.8k $25.0m | Added +98.4k |
| FACT Capital, LP 11.62% of their portfolio | 99.7k $24.9m | Unchanged |
| Summit Creek Advisors LLC 2.85% of their portfolio | 91.1k $22.8m | Added +95 |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.61% of their portfolio | 90.1k $22.5m | Reduced -127 |
| Polar Capital Holdings Plc 0.15% of their portfolio | 88.8k $22.2m | Added +1.4k |
| LPL Financial LLC 0.02% of their portfolio | 87.5k $21.9m | Reduced -7.5k |
| LOOMIS SAYLES & CO L P 0.04% of their portfolio | 87.2k $21.8m | Reduced -1.5k |
| Artemis Investment Management LLP 0.28% of their portfolio | 86.5k $21.6m | Added +22.5k |
| VAN ECK ASSOCIATES CORP 0.05% of their portfolio | 85.7k $21.4m | Added +327 |
| Motley Fool Asset Management LLC 1.90% of their portfolio | 85.2k $21.3m | Added +19.1k |
| TODD ASSET MANAGEMENT LLC 0.48% of their portfolio | 82.1k $20.5m | Reduced -59.0k |
| PALISADE CAPITAL MANAGEMENT, LP 0.51% of their portfolio | 77.3k $19.4m | Added +2.4k |