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ICLR · Icon PLC · Holdings

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$162.05 +0.20 (+0.12%) At close · Oct 2
Market Cap
$13.30B
Shares
77.15M
Volume · Oct 2 676.14K Avg daily vol (3M) 805.44K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 429
Total Value: $14,138,667,832
Total Shares: 81,392,415
Showing 1–100 of 449 holdings by value · page 1 of 5

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 429 13F filers
Top Holder
10.6%
Sep 2023 → Jun 2026 · range 8.2% – 10.6%
of institutional value
Top 5
35.6%
Sep 2023 → Jun 2026 · range 22.9% – 35.6%
of institutional value
Top 10
52.0%
Sep 2023 → Jun 2026 · range 35.5% – 52.0%
of institutional value
HHI
369
Sep 2023 → Jun 2026 · range 210 – 369
Broadly held
Showing 100 of 449
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1060955 CUSIP G4705A100 13F (30d) 15 filings 7 filers Visit website Investor relations