ICLR Institutional Ownership & Shareholders
ICON PLC (ICLR) is currently held by 408 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $13.66B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Artisan Partners Limited Partnership is currently the largest disclosed institutional shareholder of ICLR tracked by InsiderSet, reporting ownership valued at approximately $1.50B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.77B, representing an estimated gain of +18.09% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 54% of the total disclosed ICLR value among the investors covered in this analysis. Major shareholders include Artisan Partners Limited Partnership, Wellington Management Group Llp, Fmr Llc, and several other long-term asset managers with concentrated positions in ICON PLC (ICLR).
This page ranks the largest institutional ICLR shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
408
Total Reported Value
$13.66B
Largest Holder
Artisan Partners Limited Partnership
Largest Position
$1.50B
Insider Transactions (90d)
50
Latest Filing Quarter
Q2 2026
New Institutional Positions
44
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Artisan Partners Limited Partnership | 2.45% | 8,636,406 | $1,500,230,086 | $1,771,672,327 | +$271,442,241 | +18.09% | |
| Wellington Management Group Llp | 0.16% | 5,320,054 | $924,146,579 | $1,091,355,878 | +$167,209,299 | +18.09% | |
| Fmr Llc | 0.04% | 5,271,321 | $915,681,103 | $1,081,358,790 | +$165,677,687 | +18.09% | |
| Invesco Ltd. | 0.07% | 5,264,236 | $914,450,419 | $1,079,905,373 | +$165,454,954 | +18.09% | |
| Harris Associates L P | 1.03% | 4,468,146 | $776,161,642 | $916,595,470 | +$140,433,828 | +18.09% | |
| Brave Warrior Advisors | Glenn Greenberg | 11.94% | 3,153,308 | $547,761,133 | $646,869,603 | +$99,108,470 | +18.09% |
| Greenhaven Associates | Edgar Wachenheim III | 6.55% | 3,069,015 | $521,701,860 | $629,577,737 | +$107,875,877 | +20.68% |
| Principal Financial Group Inc | 0.26% | 2,937,402 | $499,328,967 | $602,578,646 | +$103,249,679 | +20.68% | |
| Massachusetts Financial Services Co | 0.12% | 2,105,171 | $369,449,772 | $431,854,779 | +$62,405,007 | +16.89% | |
| Sequoia Fund | Ruane, Cunniff & Goldfarb | 5.54% | 2,048,087 | $355,773,193 | $420,144,567 | +$64,371,374 | +18.09% |
| Boston Partners | 0.25% | 1,620,730 | $281,401,252 | $332,476,552 | +$51,075,300 | +18.15% | |
| Trinity Street Asset Management Llp | 13.54% | 1,487,375 | $252,838,876 | $305,120,108 | +$52,281,232 | +20.68% | |
| D. E. Shaw & Co., Inc. | 0.15% | 1,357,143 | $235,749,311 | $278,404,315 | +$42,655,004 | +18.09% | |
| Dimensional Fund Advisors Lp | 0.04% | 1,270,230 | $220,647,779 | $260,574,982 | +$39,927,203 | +18.10% | |
| Earnest Partners Llc | 0.78% | 1,242,639 | $215,858,821 | $254,914,964 | +$39,056,143 | +18.09% | |
| Maple Rock Capital Partners Inc. | 4.09% | 1,199,600 | $208,382,516 | $246,085,944 | +$37,703,428 | +18.09% | |
| 1832 Asset Management L.P. | 0.25% | 1,194,860 | $207,559,131 | $245,113,580 | +$37,554,449 | +18.09% | |
| Brandes Investment Partners, Lp | 1.44% | 1,185,774 | $205,983,126 | $243,249,678 | +$37,266,552 | +18.09% | |
| Capital World Investors | 0.02% | 1,106,056 | $192,132,988 | $226,896,328 | +$34,763,340 | +18.09% | |
| Ameriprise Financial Inc | 0.03% | 979,596 | $170,166,084 | $200,954,323 | +$30,788,239 | +18.09% | |
| Van Lanschot Kempen Investment Management N.V. | 1.28% | 961,665 | $167,050,827 | $197,275,958 | +$30,225,131 | +18.09% | |
| Sei Investments Co | 0.14% | 902,185 | $156,718,637 | $185,074,231 | +$28,355,594 | +18.09% | |
| Equity Investment Corp | 2.95% | 888,875 | $154,406,469 | $182,343,818 | +$27,937,349 | +18.09% | |
| Lyrical Asset Management Lp | 1.94% | 881,179 | $153,069,604 | $180,765,060 | +$27,695,456 | +18.09% | |
| Alliancebernstein L.P. | 0.05% | 1,378,196 | $152,511,169 | $282,723,127 | +$130,211,958 | +85.38% | |
| Norges Bank | 0.01% | 820,998 | $142,615,563 | $168,419,530 | +$25,803,967 | +18.09% | |
| Thrivent Financial For Lutherans | 0.23% | 802,415 | $139,388,000 | $164,607,413 | +$25,219,413 | +18.09% | |
| Stephens Investment Management Group Llc | 1.34% | 720,261 | $125,116,538 | $147,754,342 | +$22,637,804 | +18.09% | |
| First Pacific Advisors, Lp | 1.30% | 606,523 | $105,359,110 | $124,422,128 | +$19,063,018 | +18.09% | |
| Russell Investments Group, Ltd. | 0.09% | 599,198 | $104,086,074 | $122,919,478 | +$18,833,404 | +18.09% | |
| Lakewood Capital Management, Lp | 5.27% | 585,200 | $101,655,092 | $120,047,928 | +$18,392,836 | +18.09% | |
| Ubs Group Ag | 0.02% | 546,437 | $94,921,570 | $112,096,086 | +$17,174,516 | +18.09% | |
| Blackrock, Inc. | 0.00% | 534,935 | $92,923,587 | $109,736,566 | +$16,812,979 | +18.09% | |
| Bank Of America Corp | 0.01% | 503,099 | $87,393,328 | $103,205,729 | +$15,812,401 | +18.09% | |
| Zurich Insurance Group Ltd/Fi | 0.58% | 481,208 | $83,590,642 | $98,715,009 | +$15,124,367 | +18.09% | |
| Goldman Sachs Group Inc | 0.01% | 450,717 | $78,294,050 | $92,460,085 | +$14,166,035 | +18.09% | |
| State Street Corp | 0.00% | 437,853 | $76,059,445 | $89,821,164 | +$13,761,719 | +18.09% | |
| Morgan Stanley | 0.00% | 414,192 | $71,949,489 | $84,967,347 | +$13,017,858 | +18.09% | |
| Aberdeen Group Plc | 0.10% | 394,362 | $68,504,623 | $80,899,421 | +$12,394,798 | +18.09% | |
| Bamco Inc | 0.10% | 376,805 | $65,454,797 | $77,297,778 | +$11,842,981 | +18.09% | |
| Jane Street Group, Llc | 0.04% | 374,800 | $65,106,508 | $76,886,472 | +$11,779,964 | +18.09% | |
| Hudson Edge Investment Partners Inc. | 8.79% | 376,440 | $63,991,036 | $77,222,902 | +$13,231,866 | +20.68% | |
| Point72 Asset Management, L.P. | 0.10% | 365,945 | $63,568,306 | $75,069,957 | +$11,501,651 | +18.09% | |
| Woodline Partners Lp | 0.18% | 327,184 | $56,835,133 | $67,118,526 | +$10,283,393 | +18.09% | |
| Eagle Health Investments Lp | 8.87% | 308,143 | $53,527,521 | $63,212,455 | +$9,684,934 | +18.09% | |
| Zuckerman Investment Group, Llc | 4.33% | 294,439 | $51,146,999 | $60,401,216 | +$9,254,217 | +18.09% | |
| Voya Investment Management Llc | 0.04% | 289,918 | $50,361,655 | $59,473,779 | +$9,112,124 | +18.09% | |
| River Road Asset Management, Llc | 0.55% | 285,137 | $49,531,148 | $58,493,004 | +$8,961,856 | +18.09% | |
| Canada Pension Plan Investment Board | 0.02% | 246,018 | $42,735,787 | $50,468,133 | +$7,732,346 | +18.09% | |
| Perry Creek Capital Lp | 19.48% | 245,000 | $42,558,950 | $50,259,300 | +$7,700,350 | +18.09% |
Frequently asked questions about ICLR
Who are the largest institutional holders of ICLR?
The largest institutional holders of ICLR reported in the latest SEC Form 13F filings include Artisan Partners Limited Partnership, Wellington Management Group Llp, Fmr Llc, Invesco Ltd., and Harris Associates L P. InsiderSet ranks institutional holders by their latest reported ICLR position.
What is ICLR institutional ownership?
This page tracks ICLR positions reported by institutional investment managers through SEC Form 13F. ICON PLC (ICLR) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own ICLR?
InsiderSet currently tracks 408 institutional managers reporting ICLR holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of ICLR shareholders.
How much ICLR stock do institutions own?
Institutional investment managers disclosed approximately $13.66B in ICLR holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was ICLR institutional ownership last updated?
The latest ICLR institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional ICLR holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its ICLR position after the reporting date.
Are institutions buying or selling ICLR?
Institutional buying and selling can be analyzed by comparing ICLR positions across consecutive 13F reporting periods. InsiderSet's ICLR Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ICLR ownership changes.
How has ICLR institutional ownership changed over time?
InsiderSet tracks ICLR institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.