| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Artisan Partners Limited Partnership | 9% | +74% | $1,009,402,386 | +$406,570,474 | 7,184,870 | +67% | Artisan Partners Asset Management Inc. | 30 Jun 2025 |
| WELLINGTON MANAGEMENT GROUP LLP | 6% | $811,498,975 | 4,637,137 | Wellington Management Group LLP | 30 Sep 2025 | |||
| ORBIS INVESTMENT MANAGEMENT LTD | 5.3% | $723,480,975 | 4,134,177 | ORBIS INVESTMENT MANAGEMENT LTD | 30 Sep 2025 | |||
| WCM INVESTMENT MANAGEMENT, LLC | 0.25% | $28,090,414 | 199,946 | WCM Investment Management, LLC | 30 Jun 2025 |
As of 30 Sep 2025, 502 institutional investors reported holding 74,377,201 shares of ICON PLC - Common Stock (ICLR). This represents 95% of the company’s total 78,003,340 outstanding shares.
The largest institutional shareholders of ICON PLC - Common Stock (ICLR) together control 66% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Artisan Partners Limited Partnership | 9.1% | 7,071,360 | -1.6% | 1.8% | $1,237,488,000 |
| WELLINGTON MANAGEMENT GROUP LLP | 5.9% | 4,637,137 | +27% | 0.14% | $811,498,975 |
| Orbis Allan Gray Ltd | 5.3% | 4,138,818 | +1133% | 3.1% | $724,293,150 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 4.5% | 3,503,553 | -6.6% | 0.19% | $613,121,775 |
| Invesco Ltd. | 4.4% | 3,427,630 | +11% | 0.09% | $599,835,257 |
| PRINCIPAL FINANCIAL GROUP INC | 4.2% | 3,277,293 | +739% | 0.29% | $573,526,275 |
| Ninety One UK Ltd | 3.9% | 3,006,141 | +0.42% | 1.1% | $526,074,672 |
| FRANKLIN RESOURCES INC | 3.5% | 2,753,528 | +35% | 0.12% | $481,691,931 |
| HARRIS ASSOCIATES L P | 3% | 2,342,559 | +43% | 0.66% | $409,947,825 |
| FMR LLC | 2.5% | 1,933,238 | -1.6% | 0.02% | $338,316,613 |
| Ruane, Cunniff & Goldfarb L.P. | 2.2% | 1,700,994 | -0.42% | 4.9% | $297,673,950 |
| D. E. Shaw & Co., Inc. | 1.9% | 1,477,101 | -39% | 0.21% | $258,492,675 |
| ALLIANCEBERNSTEIN L.P. | 1.8% | 1,374,074 | +4% | 0.08% | $240,462,950 |
| WGI DM, LLC | 1.6% | 1,277,980 | +27% | 8.3% | $223,646,500 |
| 1832 Asset Management L.P. | 1.5% | 1,204,125 | +4.6% | 0.36% | $210,721,875 |
| Clearbridge Investments, LLC | 1.5% | 1,134,440 | -1.2% | 0.15% | $198,527,000 |
| Allspring Global Investments Holdings, LLC | 1.4% | 1,068,857 | +0.79% | 0.33% | $205,551,890 |
| First Pacific Advisors, LP | 1.2% | 974,325 | +1.1% | 2.4% | $170,506,875 |
| Trinity Street Asset Management LLP | 1.1% | 870,973 | +3.5% | 10% | $152,420,275 |
| EARNEST PARTNERS LLC | 1% | 809,652 | +36% | 0.61% | $141,689,100 |
| BRANDES INVESTMENT PARTNERS, LP | 0.97% | 755,660 | +264% | 1.1% | $132,242,610 |
| Boston Partners | 0.95% | 739,135 | +1207% | 0.13% | $129,372,317 |
| SEI INVESTMENTS CO | 0.9% | 699,274 | +15% | 0.13% | $122,380,130 |
| BAMCO INC /NY/ | 0.88% | 684,941 | -0.82% | 0.32% | $119,864,675 |
| EQUITY INVESTMENT CORP | 0.81% | 628,229 | +11% | 2.3% | $109,940,059 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 364,293 | $66,441,598 | -$3,003,127 | $182.22 | 33 |
| 2025 Q3 | 74,377,201 | $13,023,454,002 | -$175,034,401 | $175.00 | 502 |
| 2025 Q2 | 76,791,411 | $11,178,935,190 | +$159,733,463 | $145.45 | 480 |
| 2025 Q1 | 73,937,144 | $12,954,276,230 | -$528,065,853 | $174.99 | 545 |
| 2024 Q4 | 76,005,086 | $15,944,680,932 | -$439,838,777 | $209.71 | 580 |
| 2024 Q3 | 76,716,440 | $22,049,008,392 | -$399,018,679 | $287.31 | 647 |
| 2024 Q2 | 77,256,457 | $24,222,983,745 | +$150,445,690 | $313.47 | 665 |
| 2024 Q1 | 76,822,942 | $25,783,590,208 | -$483,986,689 | $335.95 | 633 |
| 2023 Q4 | 903,416 | $255,761,390 | -$138,899,718 | $283.07 | 6 |
| 2023 Q3 | 79,021,794 | $19,459,294,157 | +$211,898,890 | $246.25 | 535 |
| 2023 Q2 | 77,031,973 | $19,282,113,236 | +$807,346,917 | $250.20 | 514 |
| 2023 Q1 | 74,171,654 | $15,838,723,965 | +$145,218,793 | $213.59 | 520 |
| 2022 Q4 | 73,157,445 | $14,224,178,400 | -$244,377,793 | $194.25 | 506 |
| 2022 Q3 | 75,154,155 | $13,816,480,627 | +$146,902,436 | $183.78 | 465 |
| 2022 Q2 | 73,587,729 | $15,945,950,047 | +$369,706,290 | $216.70 | 488 |
| 2022 Q1 | 72,716,402 | $17,683,790,651 | -$77,560,868 | $243.22 | 490 |
| 2021 Q4 | 72,122,587 | $22,297,644,858 | +$8,740,105 | $309.70 | 530 |
| 2021 Q3 | 72,864,377 | $19,091,441,309 | +$3,733,619,972 | $262.02 | 497 |
| 2021 Q2 | 58,909,661 | $12,181,470,769 | +$1,801,255,807 | $206.71 | 435 |
| 2021 Q1 | 50,315,284 | $9,881,734,193 | +$747,298,839 | $196.37 | 414 |
| 2020 Q4 | 46,193,235 | $9,006,631,926 | +$43,240,252 | $194.98 | 405 |
| 2020 Q3 | 45,836,860 | $8,758,389,624 | +$34,265,137 | $191.09 | 375 |
| 2020 Q2 | 45,706,838 | $7,701,058,243 | +$180,901,816 | $168.46 | 367 |
| 2020 Q1 | 44,732,470 | $6,082,743,856 | -$189,839,917 | $136.00 | 350 |
| 2019 Q4 | 46,235,420 | $7,962,778,886 | -$90,999,977 | $172.23 | 357 |
| 2019 Q3 | 46,748,158 | $6,887,407,469 | +$177,833,591 | $147.34 | 346 |
| 2019 Q2 | 45,711,181 | $7,037,705,879 | -$55,406,239 | $153.97 | 333 |
| 2019 Q1 | 46,867,348 | $6,401,187,799 | -$64,672,707 | $136.58 | 347 |
| 2018 Q4 | 47,381,574 | $6,131,499,666 | +$9,186,874 | $129.21 | 340 |
| 2018 Q3 | 47,198,001 | $7,255,449,323 | -$98,016,618 | $153.75 | 354 |
| 2018 Q2 | 45,738,124 | $6,059,780,204 | +$94,738,910 | $132.53 | 327 |
| 2018 Q1 | 47,716,316 | $5,637,139,809 | -$90,265,747 | $118.14 | 324 |
| 2017 Q4 | 48,988,840 | $5,494,349,998 | -$4,859,299 | $112.15 | 329 |
| 2017 Q3 | 48,864,548 | $5,564,561,591 | -$91,515,562 | $113.88 | 292 |
| 2017 Q2 | 50,052,638 | $4,894,801,878 | -$45,781,072 | $97.79 | 274 |
| 2017 Q1 | 51,080,355 | $4,072,900,417 | +$92,942,595 | $79.72 | 268 |
| 2016 Q4 | 50,069,175 | $3,765,835,272 | -$119,582,668 | $75.20 | 273 |
| 2016 Q3 | 51,780,041 | $4,004,784,211 | -$917,848 | $77.37 | 254 |
| 2016 Q2 | 50,594,899 | $3,542,664,656 | +$32,302,124 | $70.01 | 264 |
| 2016 Q1 | 51,987,045 | $3,898,495,789 | +$21,545,910 | $75.10 | 264 |
| 2015 Q4 | 51,135,512 | $3,973,058,323 | +$16,003,247 | $77.70 | 260 |
| 2015 Q3 | 51,636,936 | $3,664,619,423 | -$60,670,212 | $70.97 | 268 |
| 2015 Q2 | 52,748,852 | $3,550,056,562 | +$244,994,590 | $67.30 | 243 |
| 2015 Q1 | 50,235,807 | $3,540,815,272 | +$20,613,994 | $70.53 | 236 |
| 2014 Q4 | 49,988,798 | $2,550,939,607 | -$189,894,717 | $50.99 | 223 |
| 2014 Q3 | 53,557,024 | $3,065,012,724 | -$51,319,025 | $57.23 | 220 |
| 2014 Q2 | 54,743,473 | $2,578,950,834 | -$12,834,093 | $47.11 | 206 |
| 2014 Q1 | 55,494,248 | $2,637,898,743 | -$22,187,999 | $47.55 | 195 |