ICON PLC (ICLR) Institutional Shareholders
ICON PLC (ICLR) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $13.72B in ICLR holdings during the latest filing period.
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 $1.42B, representing an estimated loss of -5.53% 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
406
Total Reported Value
$13.72B
Largest Holder
Artisan Partners Limited Partnership
Largest Position
$1.50B
Insider Transactions (90d)
47
Latest Filing Quarter
Q2 2026
New Institutional Positions
49
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 | $1,417,320,589 | -$82,909,497 | -5.53% | |
| Wellington Management Group Llp | 0.16% | 5,320,054 | $924,146,579 | $873,074,062 | -$51,072,517 | -5.53% | |
| Fmr Llc | 0.04% | 5,271,321 | $915,681,103 | $865,076,489 | -$50,604,614 | -5.53% | |
| Invesco Ltd. | 0.07% | 5,264,236 | $914,450,419 | $863,913,770 | -$50,536,649 | -5.53% | |
| Harris Associates L P | 1.03% | 4,468,146 | $776,161,642 | $733,267,440 | -$42,894,202 | -5.53% | |
| Brave Warrior Advisors | Glenn Greenberg | 11.94% | 3,153,308 | $547,761,133 | $517,489,376 | -$30,271,757 | -5.53% |
| Greenhaven Associates | Edgar Wachenheim III | 6.22% | 3,100,615 | $538,607,832 | $508,841,928 | -$29,765,904 | -5.53% |
| Principal Financial Group Inc | 0.25% | 2,950,974 | $512,613,693 | $484,284,343 | -$28,329,350 | -5.53% | |
| Massachusetts Financial Services Co | 0.12% | 2,105,171 | $369,449,772 | $345,479,613 | -$23,970,159 | -6.49% | |
| Sequoia Fund | Ruane, Cunniff & Goldfarb | 5.54% | 2,048,087 | $355,773,193 | $336,111,558 | -$19,661,635 | -5.53% |
| Boston Partners | 0.25% | 1,620,730 | $281,401,252 | $265,978,000 | -$15,423,252 | -5.48% | |
| Trinity Street Asset Management Llp | 13.74% | 1,535,462 | $266,725,104 | $251,984,669 | -$14,740,435 | -5.53% | |
| D. E. Shaw & Co., Inc. | 0.15% | 1,357,143 | $235,749,311 | $222,720,738 | -$13,028,573 | -5.53% | |
| Dimensional Fund Advisors Lp | 0.04% | 1,270,230 | $220,647,779 | $208,457,445 | -$12,190,334 | -5.52% | |
| Earnest Partners Llc | 0.78% | 1,242,639 | $215,858,821 | $203,929,486 | -$11,929,335 | -5.53% | |
| Maple Rock Capital Partners Inc. | 4.09% | 1,199,600 | $208,382,516 | $196,866,356 | -$11,516,160 | -5.53% | |
| 1832 Asset Management L.P. | 0.25% | 1,194,860 | $207,559,131 | $196,088,475 | -$11,470,656 | -5.53% | |
| Brandes Investment Partners, Lp | 1.44% | 1,185,774 | $205,983,126 | $194,597,371 | -$11,385,755 | -5.53% | |
| Capital World Investors | 0.02% | 1,106,056 | $192,132,988 | $181,514,850 | -$10,618,138 | -5.53% | |
| Ameriprise Financial Inc | 0.03% | 979,596 | $170,166,084 | $160,761,500 | -$9,404,584 | -5.53% | |
| Van Lanschot Kempen Investment Management N.V. | 1.28% | 961,665 | $167,050,827 | $157,818,843 | -$9,231,984 | -5.53% | |
| Sei Investments Co | 0.14% | 902,185 | $156,718,637 | $148,057,580 | -$8,661,057 | -5.53% | |
| Equity Investment Corp | 2.95% | 888,875 | $154,406,469 | $145,873,276 | -$8,533,193 | -5.53% | |
| Lyrical Asset Management Lp | 1.94% | 881,179 | $153,069,604 | $144,610,286 | -$8,459,318 | -5.53% | |
| Alliancebernstein L.P. | 0.05% | 1,378,196 | $152,511,169 | $226,175,746 | +$73,664,577 | +48.30% | |
| Norges Bank | 0.01% | 820,998 | $142,615,563 | $134,733,982 | -$7,881,581 | -5.53% | |
| Thrivent Financial For Lutherans | 0.23% | 802,415 | $139,388,000 | $131,684,326 | -$7,703,674 | -5.53% | |
| Stephens Investment Management Group Llc | 1.34% | 720,261 | $125,116,538 | $118,202,033 | -$6,914,505 | -5.53% | |
| First Pacific Advisors, Lp | 1.30% | 606,523 | $105,359,110 | $99,536,490 | -$5,822,620 | -5.53% | |
| Russell Investments Group, Ltd. | 0.09% | 599,198 | $104,086,074 | $98,334,384 | -$5,751,690 | -5.53% | |
| Lakewood Capital Management, Lp | 5.27% | 585,200 | $101,655,092 | $96,037,172 | -$5,617,920 | -5.53% | |
| Ubs Group Ag | 0.02% | 546,437 | $94,921,570 | $89,675,776 | -$5,245,794 | -5.53% | |
| Blackrock, Inc. | 0.00% | 534,935 | $92,923,587 | $87,788,183 | -$5,135,404 | -5.53% | |
| Bank Of America Corp | 0.01% | 503,099 | $87,393,328 | $82,563,577 | -$4,829,751 | -5.53% | |
| Zurich Insurance Group Ltd/Fi | 0.58% | 481,208 | $83,590,642 | $78,971,045 | -$4,619,597 | -5.53% | |
| Goldman Sachs Group Inc | 0.01% | 450,717 | $78,294,050 | $73,967,167 | -$4,326,883 | -5.53% | |
| State Street Corp | 0.00% | 437,853 | $76,059,445 | $71,856,056 | -$4,203,389 | -5.53% | |
| Morgan Stanley | 0.00% | 414,192 | $71,949,489 | $67,973,049 | -$3,976,440 | -5.53% | |
| Aberdeen Group Plc | 0.10% | 394,362 | $68,504,623 | $64,718,748 | -$3,785,875 | -5.53% | |
| Bamco Inc | 0.10% | 376,805 | $65,454,797 | $61,837,469 | -$3,617,328 | -5.53% | |
| Jane Street Group, Llc | 0.04% | 374,800 | $65,106,508 | $61,508,428 | -$3,598,080 | -5.53% | |
| Hudson Edge Investment Partners Inc. | 8.70% | 366,477 | $63,660,720 | $60,142,540 | -$3,518,180 | -5.53% | |
| Point72 Asset Management, L.P. | 0.10% | 365,945 | $63,568,306 | $60,055,234 | -$3,513,072 | -5.53% | |
| Woodline Partners Lp | 0.18% | 327,184 | $56,835,133 | $53,694,166 | -$3,140,967 | -5.53% | |
| Eagle Health Investments Lp | 8.87% | 308,143 | $53,527,521 | $50,569,348 | -$2,958,173 | -5.53% | |
| Zuckerman Investment Group, Llc | 4.33% | 294,439 | $51,146,999 | $48,320,384 | -$2,826,615 | -5.53% | |
| Voya Investment Management Llc | 0.04% | 289,918 | $50,361,655 | $47,578,443 | -$2,783,212 | -5.53% | |
| River Road Asset Management, Llc | 0.55% | 285,137 | $49,531,148 | $46,793,833 | -$2,737,315 | -5.53% | |
| Canada Pension Plan Investment Board | 0.02% | 246,018 | $42,735,787 | $40,374,014 | -$2,361,773 | -5.53% | |
| Perry Creek Capital Lp | 19.48% | 245,000 | $42,558,950 | $40,206,950 | -$2,352,000 | -5.53% |
Frequently asked questions about ICLR
Who owns the most ICLR stock?
The largest holders of ICLR are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ICON PLC (ICLR).
Is ICLR widely held by superinvestors?
Many widely followed stocks like ICLR appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ICLR is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.