ICON Public Limited Company (ICLR)

Highly Crowded

Held by 393 of 5,944 reporting institutions (96th percentile) — extremely crowded.

Data as of Q1 2026

Institutional Ownership

94.79%

QoQ Change

+0.44%

Total Value

$8.1T

Shares Outstanding

77.4M

Crowding AnalysisHighly Crowded

Holders393of 5,944

Avg: 68

Uncrowded96th percentileCrowded

Institutional Activity

Buy/Sell Ratio0.75x

90th percentile

226 buying301 selling

+70

New

-161

Closed

-1,082,912

Net shares

Holding Period Distribution

estimate

Median: 3 QAvg: 3 QHolders: 393

Ownership Concentration

Top 5: 36.3%Top 10: 53.5%

Artisan Partners Limited Partnership11.3%

WELLINGTON MANAGEMENT GROUP LLP8.1%

HARRIS ASSOCIATES L P5.9%

FMR5.7%

Invesco5.3%

Others (388)63.7%

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Conviction-Weighted Ownership

Median weight: 0.42%Avg weight: 1.75%Max: 8.21%High conviction (>1%): 4

Artisan Partners Limited Partnership

WELLINGTON MANAGEMENT GROUP LLP

HARRIS ASSOCIATES L P

FMR

Invesco

PRINCIPAL FINANCIAL GROUP

Brave Warrior Advisors,

MASSACHUSETTS FINANCIAL SERVICES CO

GREENHAVEN ASSOCIATES

Ruane, Cunniff & Goldfarb L.P.

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWBrave Warrior Advisors$332M3.0M shr

NEWGREENHAVEN ASSOCIATES$222M2.0M shr

BOUGHTHARRIS ASSOCIATES L P$204M1.8M shr

NEWRuane, Cunniff & Goldfarb L.P.$181M1.6M shr

BOUGHTWELLINGTON MANAGEMENT GROUP LLP$173M1.6M shr

BOUGHTFMR$212M1.2M shr

SOLDMASSACHUSETTS FINANCIAL SERVICES CO /MA$209M1.1M shr

BOUGHTInvesco$60M329K shr

SOLDWELLINGTON MANAGEMENT GROUP LLP$52M286K shr

SOLDPRINCIPAL FINANCIAL GROUP$50M276K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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