ICON plc

Historical 13F Holders

Symbol
ICLR
CUSIP
G4705A100
All holders as of
Q2 2026
Type
Equity
Class
SHS
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for G4705A100 since 12/18/2024, largest first.

Filer % of Class Filed
Artisan Partners Limited Partnership 13G/A
10.9% 3/6/2026
Event 2/27/2026
Wellington Management Group LLP 13G/A
7.7% 5/15/2026
Event 3/31/2026
FMR LLC 13G/A
6.9% 8/6/2026
Event 6/30/2026
Invesco Ltd. 13G/A 6.9% 8/13/2026
Event 6/30/2026
Harris Associates L P 13G
5.7% 5/15/2026
Event 3/31/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (2)
WCM Investment Management, LLC 13G/A 0.3% 7/3/2025
Event 6/30/2025
Orbis Investment Management Ltd 13G/A
0% 5/15/2026
Event 3/31/2026

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 24 278 k $47.3 M
2026 Q2 454 80.3 M $13.9 B
2026 Q1 449 78.2 M $8.75 B
2025 Q4 534 77.4 M $14.1 B
2025 Q3 541 78.1 M $13.7 B
2025 Q2 513 79.7 M $11.6 B
2025 Q1 585 76.0 M $13.4 B
2024 Q4 625 76.4 M $16.0 B
2024 Q3 689 80.2 M $22.8 B
2024 Q2 702 78.9 M $24.7 B
2024 Q1 677 79.6 M $26.6 B
2023 Q4 625 81.4 M $22.7 B
2023 Q3 578 80.6 M $19.7 B
2023 Q2 558 80.0 M $20.0 B
2023 Q1 557 75.7 M $16.2 B
2022 Q4 548 74.5 M $14.4 B
2022 Q3 507 76.8 M $14.1 B
2022 Q2 527 74.4 M $16.1 B
2022 Q1 529 73.1 M $17.8 B
2021 Q4 569 73.2 M $22.6 B
2021 Q3 529 73.2 M $19.2 B
2021 Q2 475 59.3 M $12.3 B
2021 Q1 445 50.6 M $9.94 B
2020 Q4 439 46.8 M $9.12 B
2020 Q3 403 46.4 M $8.87 B
2020 Q2 396 46.2 M $7.78 B
2020 Q1 388 45.2 M $6.14 B
2019 Q4 383 47.8 M $8.22 B
2019 Q3 375 47.1 M $6.94 B
2019 Q2 366 46.2 M $7.11 B
2019 Q1 371 47.0 M $6.42 B
2018 Q4 357 47.5 M $6.14 B
2018 Q3 375 48.0 M $7.37 B
2018 Q2 349 48.0 M $8.88 B
2018 Q1 343 48.0 M $5.67 B
2017 Q4 347 49.1 M $5.50 B
2017 Q3 315 49.1 M $5.59 B
2017 Q2 292 50.1 M $4.90 B
2017 Q1 286 51.3 M $4.09 B
2016 Q4 292 50.4 M $3.79 B
2016 Q3 267 51.8 M $4.01 B
2016 Q2 284 52.0 M $3.64 B
2016 Q1 280 52.1 M $3.91 B
2015 Q4 281 52.4 M $4.07 B
2015 Q3 285 51.8 M $3.68 B
2015 Q2 255 53.2 M $3.58 B
2015 Q1 247 50.3 M $3.56 B
2014 Q4 238 50.6 M $2.59 B
2014 Q3 232 53.8 M $3.09 B
2014 Q2 217 55.4 M $2.61 B
2014 Q1 206 55.5 M $2.64 B