DaveManuel.com · Institutional Ownership · Who Owns It
ICON PUB LTD CO (ICLR)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
434
Reporting holders
$14.1B
Reported value
1.0%
Calls
0.6%
Puts
+8
Holder change
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Artisan Partners Limited Partnership | $1.5B | 8,636,406 | 2.38% | 7q | +4.3%+$62.1M |
| WELLINGTON MANAGEMENT GROUP LLP | $924.1M | 5,320,054 | 0.16% | 31q | -10.0%-$103.0M |
| FMR LLC | $915.7M | 5,271,321 | 0.04% | 31q | +26.3%+$190.6M |
| Invesco Ltd. | $914.5M | 5,264,236 | 0.07% | 31q | +35.7%+$240.7M |
| HARRIS ASSOCIATES L P | $776.2M | 4,468,146 | 1.03% | 5q | +2.7%+$20.3M |
| Brave Warrior Advisors, LLC | $547.8M | 3,153,308 | 11.94% | 2q | +5.2%+$27.2M |
| GREENHAVEN ASSOCIATES INC | $538.6M | 3,100,615 | 6.22% | 5q | +54.8%+$190.8M |
| PRINCIPAL FINANCIAL GROUP INC | $512.6M | 2,950,974 | 0.25% | 31q | -10.9%-$62.7M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $369.4M | 2,105,171 | 0.12% | 31q | -22.8%-$109.3M |
| Ruane, Cunniff & Goldfarb L.P. | $355.8M | 2,048,087 | 5.54% | 7q | +25.3%+$71.8M |
| Boston Partners | $281.4M | 1,620,730 | 0.25% | 31q | +94.1%+$136.4M |
| Trinity Street Asset Management LLP | $266.7M | 1,535,462 | 13.74% | 21q | +27.1%+$56.9M |
| D. E. Shaw & Co., Inc. | $241.6M incl. $5.9M options CALL+PUT | 1,357,143 | 0.11% | 11q | +13.2%+$28.2M |
| DIMENSIONAL FUND ADVISORS LP | $220.6M | 1,270,230 | 0.04% | 20q | +61.0%+$83.6M |
| EARNEST PARTNERS LLC | $215.9M | 1,242,639 | 0.78% | 31q | +40.3%+$62.0M |
| Maple Rock Capital Partners Inc. | $208.4M | 1,199,600 | 4.09% | 2q | +257.8%+$150.1M |
| 1832 Asset Management L.P. | $207.6M | 1,194,860 | 0.10% | 10q | HELD |
| BRANDES INVESTMENT PARTNERS, LP | $206.0M | 1,185,774 | 1.44% | 5q | -17.4%-$43.3M |
| Capital World Investors | $192.1M | 1,106,056 | 0.02% | 4q | HELD |
| AMERIPRISE FINANCIAL INC | $170.2M | 979,596 | 0.03% | 31q | +858.2%+$152.4M |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. | $167.1M | 961,665 | 1.28% | 3q | +4.7%+$7.5M |
| SEI INVESTMENTS CO | $156.7M | 902,185 | 0.14% | 31q | +19.1%+$25.1M |
| EQUITY INVESTMENT CORP | $154.4M | 888,875 | 2.95% | 5q | -18.9%-$36.0M |
| LYRICAL ASSET MANAGEMENT LP | $153.1M | 881,179 | 1.94% | 3q | -6.1%-$9.9M |
| ALLIANCEBERNSTEIN L.P. | $152.5M | 1,378,196 | 0.05% | 31q | +2.5%+$3.7M |
| NORGES BANK | $142.6M | 820,998 | 0.01% | 32q | -6.5%-$10.0M |
| Thrivent Financial for Lutherans | $139.4M | 802,415 | 0.23% | 3q | +28.9%+$31.3M |
| FRANKLIN RESOURCES INC | $136.2M | 771,084 | 0.03% | 24q | -5.5%-$7.9M |
| Stephens Investment Management Group LLC | $125.1M | 720,261 | 1.34% | 31q | +20.2%+$21.0M |
| First Pacific Advisors, LP | $105.4M | 606,523 | 1.30% | 16q | -38.8%-$66.8M |
| Russell Investments Group, Ltd. | $104.1M | 599,198 | 0.09% | 31q | +16.5%+$14.7M |
| LAKEWOOD CAPITAL MANAGEMENT, LP | $101.7M | 585,200 | 5.24% | 5q | -21.7%-$28.2M |
| UBS Group AG | $94.9M | 546,437 | 0.01% | 31q | -10.8%-$11.4M |
| BlackRock, Inc. | $92.9M | 534,935 | 0.00% | 8q | +29.3%+$21.1M |
| JANE STREET GROUP, LLC | $92.7M incl. $27.6M options CALL+PUT | 374,800 | 0.01% | 25q | +15198.0%+$92.1M |
| BANK OF AMERICA CORP /DE/ | $87.4M | 503,099 | 0.01% | 31q | -7.4%-$7.0M |
| Zurich Insurance Group Ltd/FI | $83.6M | 481,208 | 0.58% | 2q | +337.8%+$64.5M |
| GOLDMAN SACHS GROUP INC | $78.3M | 450,717 | 0.01% | 31q | -28.5%-$31.3M |
| STATE STREET CORP | $76.1M | 437,853 | 0.00% | 31q | -4.2%-$3.4M |
| MORGAN STANLEY | $71.9M | 414,192 | 0.00% | 35q | +41.3%+$21.0M |
| Aberdeen Group plc | $68.5M | 394,362 | 0.10% | 23q | -1.2%-$856.0K |
| BAMCO INC /NY/ | $65.5M | 376,805 | 0.10% | 31q | -11.7%-$8.7M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $65.3M incl. $63.2M options CALL+PUT | 12,084 | 0.01% | 31q | +50.5%+$21.9M |
| HUDSON EDGE INVESTMENT PARTNERS INC. | $63.7M | 366,477 | 8.70% | 11q | +14.9%+$8.2M |
| Point72 Asset Management, L.P. | $63.6M | 365,945 | 0.07% | 10q | +3610.3%+$61.9M |
| Woodline Partners LP | $56.8M | 327,184 | 0.18% | new | NEW |
| Eagle Health Investments LP | $53.5M | 308,143 | 8.87% | 15q | -14.0%-$8.7M |
| Zuckerman Investment Group, LLC | $51.1M | 294,439 | 4.33% | 7q | +4.8%+$2.3M |
| VOYA INVESTMENT MANAGEMENT LLC | $50.4M | 289,918 | 0.04% | new | NEW |
| CITADEL ADVISORS LLC | $50.3M incl. $24.5M options CALL+PUT | 148,573 | 0.01% | 31q | -41.0%-$34.9M |
| River Road Asset Management, LLC | $49.5M | 285,137 | 0.55% | 5q | -22.9%-$14.7M |
| CANADA PENSION PLAN INVESTMENT BOARD | $42.7M | 246,018 | 0.02% | 31q | +139.4%+$24.9M |
| PERRY CREEK CAPITAL LP | $42.6M | 245,000 | 19.48% | 4q | HELD |
| CIBC Bancorp USA Inc. | $40.2M | 231,237 | 0.05% | 2q | +1.0%+$396.8K |
| Legal & General Group Plc | $39.9M | 229,796 | 0.01% | 31q | +31.0%+$9.5M |
| Hyperion Capital Advisors LP | $39.0M | 224,665 | 17.60% | 7q | +57.7%+$14.3M |
| BROWN ADVISORY INC | $35.1M | 202,339 | 0.05% | 8q | +16.7%+$5.0M |
| Oribel Capital Management, LP | $34.1M incl. $17.0M options PUT | 98,100 | 1.03% | new | NEW |
| Diamond Hill Capital Management, LLC (Investment Advisor) | $33.8M | 194,618 | 0.27% | 14q | -11.7%-$4.5M |
| ROYAL BANK OF CANADA | $33.7M | 194,040 | 0.01% | 31q | +26.2%+$7.0M |
| RAYMOND JAMES FINANCIAL INC | $33.3M | 191,976 | 0.01% | 7q | -26.6%-$12.1M |
| KENSICO CAPITAL MANAGEMENT CORP | $32.7M | 188,000 | 0.56% | new | NEW |
| MARSHALL WACE, LLP | $30.5M | 175,440 | 0.02% | 2q | +1121.1%+$28.0M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $26.7M | 153,981 | 0.00% | new | NEW |
| Fisher Funds Management LTD | $26.0M | 149,726 | 0.74% | 7q | -14.1%-$4.3M |
| Stanley Capital Management, LLC | $24.3M | 140,160 | 3.23% | 2q | +40.2%+$7.0M |
| PFM Health Sciences, LP | $23.7M | 136,482 | 2.03% | 29q | +137.4%+$13.7M |
| Parkwood LLC | $23.4M | 134,842 | 1.68% | new | NEW |
| Arvin Capital Management LP | $23.4M incl. $12.2M options CALL | 64,820 | 3.06% | new | NEW |
| Eldred Rock Partners, LLC | $23.3M | 134,248 | 5.01% | 11q | HELD |
| ENVESTNET ASSET MANAGEMENT INC | $23.2M | 133,841 | 0.01% | 31q | -7.9%-$2.0M |
| NEW YORK STATE COMMON RETIREMENT FUND | $21.4M | 122,943 | 0.03% | 31q | -64.4%-$38.7M |
| Foresight Group Ltd Liability Partnership | $20.6M | 119,181 | 3.71% | 7q | +47.8%+$6.7M |
| Polar Capital Holdings Plc | $20.3M | 116,939 | 0.05% | 2q | +16.4%+$2.9M |
| Corient Private Wealth LP | $19.9M | 114,826 | 0.03% | 14q | HELD |
| Vident Advisory, LLC | $19.9M | 114,280 | 0.14% | 8q | +4.8%+$909.2K |
| California Public Employees Retirement System | $19.7M | 113,407 | 0.01% | 31q | -5.7%-$1.2M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $18.5M | 106,275 | 0.00% | 31q | +21.6%+$3.3M |
| FRONTIER CAPITAL MANAGEMENT CO LLC | $18.1M | 104,335 | 0.17% | 7q | -3.8%-$717.8K |
| Caption Management, LLC | $17.9M CALL+PUT | options only | 0.08% | new | OPTIONS |
| GEODE CAPITAL MANAGEMENT, LLC | $17.1M | 98,639 | 0.00% | 31q | +2.9%+$479.3K |
| BANK OF MONTREAL /CAN/ | $17.0M | 97,601 | 0.01% | 31q | +1.2%+$207.9K |
| TEACHER RETIREMENT SYSTEM OF TEXAS | $16.9M | 97,118 | 0.05% | new | NEW |
| MILLENNIUM MANAGEMENT LLC | $15.4M incl. $7.0M options CALL | 48,483 | 0.01% | 2q | -4.5%-$725.1K |
| Sio Capital Management, LLC | $15.3M | 88,186 | 2.53% | 3q | -71.2%-$37.9M |
| Distillate Capital Partners LLC | $15.1M | 86,720 | 0.78% | 9q | -43.6%-$11.7M |
| STATE OF MICHIGAN RETIREMENT SYSTEM | $14.8M | 85,070 | 0.07% | 23q | HELD |
| Sone Capital Management, LLC | $14.5M | 83,333 | 1.10% | new | NEW |
| FARMERS & MERCHANTS INVESTMENTS INC | $14.4M | 82,928 | 0.35% | 31q | HELD |
| IMC-Chicago, LLC | $14.2M CALL+PUT | options only | 0.00% | 4q | OPTIONS |
| PARTHENON LLC | $13.7M | 78,653 | 1.42% | 5q | -0.7%-$95.5K |
| Leith Wheeler Investment Counsel Ltd. | $13.2M | 75,794 | 1.00% | 2q | -6.9%-$975.2K |
| Handelsbanken Fonder AB | $12.5M | 71,817 | 0.04% | 25q | +463.8%+$10.3M |
| Walleye Trading LLC | $12.4M CALL+PUT | options only | 0.01% | 6q | OPTIONS |
| WELLS FARGO & COMPANY/MN | $12.1M | 69,698 | 0.00% | 31q | -5.0%-$635.9K |
| FIRETRAIL INVESTMENTS PTY LTD | $12.0M | 69,624 | 3.39% | 6q | +20.8%+$2.1M |
| MUHLENKAMP & CO INC | $11.5M | 66,337 | 3.34% | 4q | +0.5%+$57.7K |
| VANGUARD CAPITAL MANAGEMENT LLC | $10.9M | 62,839 | 0.00% | 2q | +7.2%+$729.8K |
| Khrom Capital Management LLC | $10.8M | 61,900 | 0.90% | new | NEW |
| Schonfeld Strategic Advisors LLC | $9.5M | 54,575 | 0.03% | 2q | +10.0%+$858.0K |
Showing the largest 100 of 434 reported holders.
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-17 | Murphy Ronan Martin | Director | Sold | 5,005 | $875.9K |
| 2026-09-16 | CLIMAX JOHN DR | Director | Sold | 5,005 | $875.9K |
| 2026-09-17 | McCague Eugene Pacelli | Director | Sold | 3,255 | $569.6K |
| 2026-08-11 | Murray Ciaran | Director | Sold | 2,677 | $439.8K ×4 |
| 2026-08-11 | Clerkin Nigel Bernard John | Chief Financial Officer | Sold | 2,267 | $372.4K ×4 |
| 2026-08-11 | O'Neill Julie | Director | Sold | 915 | $150.3K ×4 |
| 2026-08-11 | Grais Linda | Director | Sold | 841 | $138.2K ×4 |
| 2026-08-11 | CLIMAX JOHN DR | Director | Sold | 841 | $138.2K ×4 |
| 2026-08-11 | McCague Eugene Pacelli | Director | Sold | 841 | $138.2K ×4 |
| 2026-08-11 | Murphy Ronan Martin | Director | Sold | 841 | $138.2K ×4 |
| 2026-08-11 | Whitaker Anne Clem | Director | Sold | 841 | $138.2K ×4 |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 100 | $970.3M | 5,708,590 | 12 | 30 | 31 | 0.0% |
| Q2 2026 | 434 | $14.1B | 80,281,878 | 83 | 142 | 137 | 1.6% |
| Q1 2026 | 426 | $8.8B | 78,171,216 | 64 | 154 | 139 | 0.8% |
| Q4 2025 | 520 | $14.2B | 77,439,625 | 62 | 146 | 192 | 0.5% |
| Q3 2025 | 519 | $13.7B | 78,057,690 | 91 | 169 | 176 | 0.3% |
| Q2 2025 | 492 | $11.2B | 77,220,930 | 64 | 148 | 205 | 0.2% |
| Q1 2025 | 564 | $13.5B | 75,871,102 | 65 | 188 | 214 | 0.3% |
| Q4 2024 | 602 | $16.2B | 76,406,800 | 65 | 185 | 245 | 0.8% |
| Q3 2024 | 662 | $22.9B | 79,178,670 | 60 | 221 | 233 | 0.5% |
| Q2 2024 | 674 | $24.7B | 78,479,329 | 79 | 238 | 214 | 0.2% |
| Q1 2024 | 650 | $26.7B | 79,371,142 | 91 | 206 | 222 | 0.2% |
| Q4 2023 | 600 | $22.5B | 79,275,008 | 75 | 176 | 205 | 0.2% |
| Q3 2023 | 556 | $19.7B | 80,031,288 | 57 | 170 | 187 | 0.2% |
| Q2 2023 | 538 | $20.0B | 79,973,060 | 65 | 174 | 189 | 0.1% |
| Q1 2023 | 536 | $16.8B | 78,607,420 | 67 | 182 | 181 | 0.1% |
| Q4 2022 | 527 | $14.4B | 74,265,165 | 79 | 140 | 203 | 0.1% |
| Q3 2022 | 477 | $26.0B | 132,784,273 | 43 | 141 | 182 | 0.0% |
| Q2 2022 | 497 | $28.8B | 132,795,486 | 58 | 155 | 178 | 0.1% |
| Q1 2022 | 501 | $30.8B | 126,363,370 | 49 | 163 | 182 | 0.1% |
| Q4 2021 | 541 | $47.3B | 152,457,731 | 60 | 174 | 157 | 0.2% |
| Q3 2021 | 506 | $45.8B | 174,532,371 | 114 | 204 | 109 | 0.2% |
| Q2 2021 | 445 | $20.5B | 98,304,926 | 70 | 160 | 118 | 0.7% |
| Q1 2021 | 424 | $16.4B | 83,106,671 | 61 | 154 | 119 | 0.5% |
| Q4 2020 | 421 | $13.1B | 66,983,460 | 47 | 126 | 130 | 0.1% |
| Q3 2020 | 387 | $19.3B | 100,650,570 | 36 | 108 | 146 | 0.1% |
| Q2 2020 | 381 | $27.2B | 161,059,681 | 50 | 92 | 170 | 0.1% |
| Q1 2020 | 367 | $18.8B | 137,778,303 | 43 | 106 | 138 | 0.0% |
| Q4 2019 | 365 | $20.1B | 116,459,393 | 37 | 122 | 119 | 0.1% |
| Q3 2019 | 355 | $240.9B | 1,635,132,231 | 31 | 91 | 147 | 0.0% |
| Q2 2019 | 342 | $232.7B | 1,510,947,115 | 35 | 117 | 115 | 93.5% |
| Q1 2019 | 352 | $204.8B | 1,499,659,126 | 36 | 103 | 133 | 0.0% |
| Q4 2018 | 347 | $197.3B | 1,526,798,611 | 5 | 4 | 11 | 0.0% |