ICON Public Limited Company
US ˙ NasdaqGS ˙ IE0005711209

SecurityICLR / ICON Public Limited Company
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership788,828 shares
Latest Disclosed Value $ 87,261,794
Dimensional Fund Advisors Lp reports 50.84% increase in ownership of ICLR / ICON Public Limited Company

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 788,828 shares of ICON Public Limited Company (US:ICLR) valued at $87,291,706 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 522,970 shares of ICON Public Limited Company. This represents a change in shares of 50.84% during the quarter. The current value of the position is $113,512,349 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F ICON SHS G4705A100 788,828 265,858 50.84 87,262 -8.43 0.0039
2026-02-12 2025-12-31 13F ICON SHS G4705A100 522,970 101,682 24.14 95,299 29.34 0.0200
2025-11-12 2025-09-30 13F ICON SHS G4705A100 421,288 -34,849 -7.64 73,681 11.06 0.0158
2025-08-12 2025-06-30 13F ICON SHS G4705A100 456,137 -1,723 -0.38 66,342 -17.21 0.0154
2025-05-13 2025-03-31 13F ICON SHS G4705A100 457,860 23,910 5.51 80,137 -11.94 0.0199
2025-02-13 2024-12-31 13F ICON SHS G4705A100 433,950 200,295 85.72 91,003 35.57 0.0219
2024-11-07 2024-09-30 13F ICON SHS G4705A100 233,655 217,398 1,337.26 67,125 1,217.45 0.0163
2024-08-09 2024-06-30 13F ICON SHS G4705A100 16,257 1,097 7.24 5,096 0.04 0.0013
2024-05-10 2024-03-31 13F ICON SHS G4705A100 15,160 0 0.00 5,093 18.58 0.0014
2024-02-07 2023-12-31 13F ICON SHS G4705A100 15,160 -118 -0.77 4,295 14.14 0.0013
2023-11-09 2023-09-30 13F ICON SHS G4705A100 15,278 -1,099 -6.71 3,763 -7.88 0.0012
2023-08-09 2023-06-30 13F ICON SHS G4705A100 16,377 -3,133 -16.06 4,086 -1.85 0.0013
2023-05-12 2023-03-31 13F ICON SHS G4705A100 19,510 0 0.00 4,163 138,633.33 0.0014
2023-02-09 2022-12-31 13F ICON SHS G4705A100 19,510 -33 -0.17 4 -99.92 0.0011
2022-11-10 2022-09-30 13F ICON SHS G4705A100 19,543 42 0.22 3,592 -15.04 0.0014
2022-08-12 2022-06-30 13F ICON SHS G4705A100 19,501 -29,508 -60.21 4,228 -64.54 0.0015
2022-05-13 2022-03-31 13F ICON CLA G4705A100 49,009 -1,033 -2.06 11,924 -23.06 0.0037
2022-02-09 2021-12-31 13F ICON CLA G4705A100 50,042 197 0.40 15,497 18.58 0.0047
2021-11-12 2021-09-30 13F ICON CLA G4705A100 49,845 49,845 13,069 0.0042
2021-05-14 2021-03-31 13F ICON CLA G4705A100 0 -4,800 -100.00 0 -100.00
2021-03-08 2020-12-31 13F/A-2 ICON CLA G4705A100 4,800 -131 -2.66 936 -0.64 0.0003
2021-02-11 2020-12-31 13F ICON CLA G4705A100 4,800 -131 936 338.0334
2020-11-12 2020-09-30 13F ICON CLA G4705A100 4,931 1,498 43.64 942 62.98 0.0004
2020-08-13 2020-06-30 13F ICON CLA G4705A100 3,433 377 12.34 578 38.94 0.0003
2020-05-14 2020-03-31 13F ICON CLA G4705A100 3,056 1,136 59.17 416 25.68 0.0002
2020-02-14 2019-12-31 13F ICON CLA G4705A100 1,920 -100 -4.95 331 11.07 0.0001
2019-11-12 2019-09-30 13F ICON CLA G4705A100 2,020 -1,064 -34.50 298 -37.26 0.0001
2019-08-13 2019-06-30 13F ICON CLA G4705A100 3,084 -31 -1.00 475 11.76 0.0002
2019-08-12 2019-03-31 13F/A-2 ICON CLA G4705A100 3,115 1,037 49.90 425 58.58 0.0002
2019-05-10 2019-03-31 13F ICON CLA G4705A100 3,115 1,037 425
2019-02-26 2018-12-31 13F/A-1 ICON CLA G4705A100 2,078 2,078 268 0.0001
2019-02-13 2018-12-31 13F ICON CLA G4705A100 2,078 268
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.