ICON PLC ICLR
CIK 0001060955 · CUSIP G4705A100
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | Artisan Partners Limited Partnership CIK 1466153 · View history | $916.15M 8,278,945 shares | 1.49% | +1.40M(+20.4%)Added | SEC filing ↗ May 13, 2026 | ▾ |
| 02 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history | $654.34M 5,913,037 shares | 0.12% | +1.56M(+35.9%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 03 | HARRIS ASSOCIATES L P CIK 813917 · View history | $481.52M 4,351,317 shares | 0.64% | +1.84M(+73.3%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 04 | FMR LLC CIK 315066 · View history | $461.90M 4,174,006 shares | 0.02% | +1.08M(+34.7%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 05 | Invesco Ltd. CIK 914208 · Amended · View history | $429.24M 3,878,869 shares | 0.04% | +121.97K(+3.2%)Added | SEC filing ↗ May 12, 2026 | ▾ |
| 06 | PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history | $366.48M 3,311,771 shares | 0.20% | +310.24K(+10.3%)Added | SEC filing ↗ May 4, 2026 | ▾ |
| 07 | Brave Warrior Advisors, LLC CIK 1553733 · View history | $331.63M 2,996,811 shares | 8.21% | +3.00MNew | SEC filing ↗ May 15, 2026 | ▾ |
| 08 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ CIK 912938 · View history | $304.90M 2,727,824 shares | 0.10% | +370.79K(+15.7%)Added | SEC filing ↗ May 14, 2026 | ▾ |
| 09 | ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history | $245.01M 1,344,595 shares | 0.08% | +72.13K(+5.7%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 10 | Sachem Head Capital Management LP CIK 1582090 · View history | $232.94M 2,105,000 shares | 5.61% | +2.10MNew | SEC filing ↗ May 15, 2026 | ▾ |
| 11 | GREENHAVEN ASSOCIATES INC CIK 846222 · View history | $221.59M 2,002,411 shares | 3.65% | +1.99M(+11412.1%)Added | SEC filing ↗ Apr 6, 2026 | ▾ |
| 12 | Ruane, Cunniff & Goldfarb L.P. CIK 1720792 · View history | $180.89M 1,634,611 shares | 3.00% | -44.98K(-2.7%)Reduced | SEC filing ↗ May 15, 2026 | ▾ |
| 13 | BRANDES INVESTMENT PARTNERS, LP CIK 1015079 · View history | $158.80M 1,435,053 shares | 1.12% | +658.32K(+84.8%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 14 | Madison Avenue Partners, LP CIK 1801265 · View history | $141.96M 1,282,838 shares | 6.17% | +1.28MNew | SEC filing ↗ May 15, 2026 | ▾ |
| 15 | Trinity Street Asset Management LLP CIK 1592579 · View history | $133.69M 1,208,148 shares | 9.17% | +135.72K(+12.7%)Added | SEC filing ↗ Apr 24, 2026 | ▾ |
| 16 | D. E. Shaw & Co., Inc. CIK 1009207 · View history | $132.63M 1,198,555 shares | 0.10% | +545.24K(+83.5%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 17 | 1832 Asset Management L.P. CIK 944388 · View history | $132.04M 1,193,240 shares | 0.17% | -11.09K(-0.9%)Reduced | SEC filing ↗ May 14, 2026 | ▾ |
| 18 | Capital World Investors CIK 1422849 · View history | $122.26M 1,104,831 shares | 0.02% | -391.65K(-26.2%)Reduced | SEC filing ↗ May 13, 2026 | ▾ |
| 19 | EQUITY INVESTMENT CORP CIK 1685771 · View history | $121.33M 1,096,395 shares | 2.38% | +473.21K(+75.9%)Added | SEC filing ↗ May 4, 2026 | ▾ |
| 20 | First Pacific Advisors, LP CIK 1377581 · View history | $109.67M 991,075 shares | 1.54% | +10.27K(+1.0%)Added | SEC filing ↗ May 14, 2026 | ▾ |
Showing 20 / 418 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
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