Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
ICLR
ICON PLCData as of 2026 Q1 (03-31) · 13F snapshot
Summary
ICON PLC (ICLR) is held by 7 tracked hedge-fund managers, a combined reported value of ~$155.73M; the largest are Seth Klarman, Renaissance Technologies, Ken Griffin. This quarter: 1 new, 1 added, 1 trimmed. 10 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · MediumThis quarter · Quiet
Gurus holding7
Congress trades10
Price$146.18vs quarter-end+32.10%
Sectors0
This quarter's moves
Top holderSeth KlarmanNew1
Added1
Trimmed / sold1
Seth KlarmanHold
Value $58.91M1.4% of portfolio405,0002025 Q2
Terry SmithHold
Value $6.90M3.7% of portfolio22,2752021 Q4
Value $3.44M— of portfolio16,4002024 Q4
Value $2.58M— of portfolio23,3002026 Q1
Value $1.34M— of portfolio12,1002026 Q1
Value $553.3K— of portfolio5,0002026 Q1
Value $221.3K— of portfolio2,0002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Seth Klarman | $58.91M | 1.4% | Hold |
| Terry Smith | $6.90M | 3.7% | Hold |
| Paul SingerCALL | $3.44M | — | — |
| Ken GriffinCALL | $2.58M | — | — |
| Ken GriffinPUT | $1.34M | — | — |
| Izzy EnglanderCALL | $553.3K | — | — |
| Izzy EnglanderPUT | $221.3K | — | — |