Follow-The-Filings

Security

ICLR

Icon PLC · SHS

Equity holders as of 2026 Q1 (each manager’s latest book)

21 owners 6 new 4 exits max 8.2% (Glenn Greenberg - Brave W...)

grid → activity →
owners 21
rank #138
master % 0.07%
max % 8.2%
tracked value $2.5B
qoq N 6 A 7 R 5 E 4

holders

sorted by % of portfolio · long equity only · exits show last held size

manager % port activity shares value history
Glenn Greenberg - Brave Warrior Advisors, LLC 2026 Q1 8.2% New 8.2% 2,996,811 $332M hist
Greenhaven Associates Inc. 2026 Q2 stale 6.2% Add +2.57 pp 3,100,615 $539M hist
Sachem Head Capital Management LP 2026 Q1 5.6% New 5.6% 2,105,000 $233M hist
Ruane, Cunniff & Goldfarb L.P. 2026 Q1 3.0% Reduce -1.78 pp 1,634,611 $181M hist
Harry Burn - Sound Shore Management Inc. /CT/ 2026 Q1 2.3% New 2.3% 626,958 $69M hist
Muhlenkamp & Co. Inc. 2026 Q1 1.9% Reduce -1.70 pp 66,005 $7M hist
Lyrical Asset Management - Lyrical Asset Management LP 2026 Q1 1.6% Reduce -0.72 pp 938,204 $104M hist
First Pacific Advisors, LP 2026 Q1 1.5% Add -0.82 pp 991,075 $110M hist
Bill Nygren / Oakmark - Harris Associates L P 2026 Q1 0.6% Add +0.06 pp 4,351,317 $482M hist
Ron Baron - Bamco Inc. /NY/ (Baron Capital) 2026 Q1 0.1% Reduce -0.12 pp 426,805 $47M hist
D. E. Shaw & Co., Inc. 2026 Q1 0.1% Add +0.01 pp 1,198,555 $133M hist
Norges Bank 2025 Q4 stale 0.0% Exit -0.02 pp 878,462 $160M hist
Dmitry Balyasny - Balyasny Asset Management L.P. 2026 Q1 0.0% Add 0.00 pp 136,416 $15M hist
Lee Ainslie - Maverick Capital Ltd 2026 Q1 0.0% New 0.0% 13,887 $2M hist
Two Sigma Investments, LP 2025 Q4 stale 0.0% Exit -0.01 pp 28,900 $5M hist
Ken Griffin - Citadel Advisors LLC 2026 Q1 0.0% Add 0.00 pp 251,607 $28M hist
Vanguard Group Inc. 2025 Q4 stale 0.0% Add 0.00 pp 91,496 $17M hist
Israel Englander - Millennium Management LLC 2026 Q1 0.0% New 0.0% 50,765 $6M hist
Marshall Wace - Marshall Wace, LLP 2026 Q1 0.0% New 0.0% 14,367 $2M hist
Steve Cohen - Point72 Asset Management, L.P. 2026 Q1 0.0% Reduce -0.04 pp 9,863 $1M hist
Ancora Advisors LLC 2026 Q1 0.0% — 20 $2 hist
Polen Capital Management LLC exited 2026 Q1 last 2025 Q4 0.1% Exit -0.08 pp 105,206 $19M hist
Natixis Advisors, LLC exited 2026 Q1 last 2025 Q4 0.0% Exit -0.01 pp 27,264 $5M hist
Cliff Asness - Aqr Capital Management LLC exited 2026 Q1 last 2025 Q4 0.0% Exit 0.00 pp 1,689 $308 hist
Farallon Capital Management LLC exited 2026 Q1 last 2025 Q4 0.0% Exit 0.00 pp 1,200 $219 hist

21 current · 4 exited last period · options excluded

ownership over time

filing count by report period · click a bar for that quarter’s holders