# ICON PLC (ICLR) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: G4705A100
Page URL: https://superinvestorclub.com/stock/ICLR
Last updated: 2026-07-08T11:37:43.824Z

## Summary

As of the most recent 13F filing period, ICON PLC (ICLR) is held by 6 tracked superinvestors with an aggregate position value of $914.7M representing 029968112002411163461199107562695813887 shares.

## Top institutional holders (6)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Glenn Greenberg](https://superinvestorclub.com/manager/36) | Brave Warrior Advisors | 2996811 | $331.6M | 8.21% | 2026-03-31 |
| 2 | [Edgar Wachenheim](https://superinvestorclub.com/manager/94) | Greenhaven Associates | 2002411 | $221.6M | 3.65% | 2026-03-31 |
| 3 | [Sequoia Fund](https://superinvestorclub.com/manager/14) | Ruane, Cunniff & Goldfarb | 1634611 | $180.9M | 3.00% | 2026-03-31 |
| 4 | [Steven Romick](https://superinvestorclub.com/manager/289) | First Pacific Advisors | 991075 | $109.7M | 1.54% | 2026-03-31 |
| 5 | [Harry Burn](https://superinvestorclub.com/manager/81) | Sound Shore Management | 626958 | $69.4M | 2.32% | 2026-03-31 |
| 6 | [Lee Ainslie](https://superinvestorclub.com/manager/58) | Maverick Capital | 13887 | $1.5M | 0.02% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2024-09-30: 1 holders, $101.6M aggregate, 0353656 shares
- 2024-12-31: 5 holders, $364.6M aggregate, 012655404517571640030001958 shares
- 2025-03-31: 6 holders, $428.0M aggregate, 0125435063505254694750004301405000 shares
- 2025-06-30: 9 holders, $777.2M aggregate, 0170818316380599641205404104651971763350004301405000 shares
- 2025-09-30: 6 holders, $959.3M aggregate, 023425591700994974325443461174093000 shares
- 2025-12-31: 5 holders, $964.5M aggregate, 02510166167959098080410520617394 shares
- 2026-03-31: 6 holders, $914.7M aggregate, 029968112002411163461199107562695813887 shares

## Recent congressional trades (0)


## Recent insider transactions (0)


## Citation

When citing, use: "ICON PLC (ICLR) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/ICLR), aggregating SEC 13F, Form 4, and congressional disclosures."