Security record · archived quarter
ICLR
ICON Public Limited Company · Healthcare · Medical - Diagnostics & Research
18Tracked holders
-1Δ holders
14.11MShares held
$2.47BReported value
+2New positions
−4Exits
Momentum inputs (comparable managers):
holder breadth -5.3% ·
share flow -17.8% ·
net new positions -11.1%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 113 | +2 | 54.24M | $9.34B | +10 | −7 |
| Q1 2026 | 112 | -7 | 49.87M | $5.61B | +7 | −15 |
| Q4 2025 | 119 | -2 | 53.17M | $9.70B | +2 | −3 |
| Q3 2025 | 18 | -1 | 14.11M | $2.47B | +2 | −4 |
| Q2 2025 | 17 | +3 | 17.03M | $2.48B | +3 | — |
| Q1 2025 | 11 | -1 | 10.01M | $1.75B | +1 | −2 |
| Q4 2024 | 12 | -1 | 9.48M | $1.99B | +2 | −3 |
| Q3 2024 | 12 | -1 | 9.43M | $2.71B | +1 | −2 |
| Q2 2024 | 13 | — | 9.47M | $2.97B | — | — |
Who holds it · Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Wellington Management ✦ | 4.64M | +26.6% | $811.50M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 2 | Wellington Management ✦ | 4.64M | +26.6% | $811.50M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 3 | Wellington Management ✦ | 4.64M | +26.6% | $811.50M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 4 | Wellington Management ✦ | 4.64M | +26.6% | $811.50M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 5 | Wellington Management ✦ | 4.64M | +26.6% | $811.50M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 6 | Wellington Management ✦ | 4.64M | +26.6% | $811.50M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 7 | Wellington Management ✦ | 4.64M | +26.6% | $811.50M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 8 | Wellington Management ✦ | 4.64M | +26.6% | $811.50M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 9 | Wellington Management ✦ | 4.64M | +26.6% | $811.50M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 10 | Harris Associates (Oakmark) ✦ | 2.34M | +43.0% | $409.95M | 0.7% | ▲ Add | 2 | SEC ↗ |
| 11 | Fidelity (FMR) ✦ | 1.93M | -1.6% | $338.32M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | Fidelity (FMR) ✦ | 1.93M | -1.6% | $338.32M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | Fidelity (FMR) ✦ | 1.93M | -1.6% | $338.32M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | Fidelity (FMR) ✦ | 1.93M | -1.6% | $338.32M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | Fidelity (FMR) ✦ | 1.93M | -1.6% | $338.32M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 16 | D. E. Shaw & Co. ✦ | 1.48M | -39.3% | $258.49M | 0.2% | ▼ Trim | 6 | SEC ↗ |
| 17 | D. E. Shaw & Co. ✦ | 1.48M | -39.3% | $258.49M | 0.2% | ▼ Trim | 6 | SEC ↗ |
| 18 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 21 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 22 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 23 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | Morgan Stanley ✦ | 500.38K | — | $87.57M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | Point72 Asset Management ✦ | 462.05K | -13.8% | $80.86M | 0.2% | ▼ Trim | 6 | SEC ↗ |
| 32 | Goldman Sachs Group ✦ | 448.77K | — | $78.53M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Goldman Sachs Group ✦ | 448.77K | — | $78.53M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Goldman Sachs Group ✦ | 448.77K | — | $78.53M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Goldman Sachs Group ✦ | 448.77K | — | $78.53M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Glenview Capital ✦ | 371.42K | New | $65.00M | 1.6% | New | 1 | SEC ↗ |
| 37 | State Street Global Advisors ✦ (passive) | 358.92K | -14.1% | $62.81M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 38 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 46 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 47 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 48 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 49 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 50 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 51 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 52 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 53 | JPMorgan Chase ✦ | 277.74K | — | $48.60M | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Citadel Advisors ✦ | 269.98K | -86.1% | $47.25M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 55 | Citadel Advisors ✦ | 269.98K | -86.1% | $47.25M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 56 | BlackRock ✦ (passive) | 254.06K | -22.2% | $44.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 57 | BlackRock ✦ (passive) | 254.06K | -22.2% | $44.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 58 | BlackRock ✦ (passive) | 254.06K | -22.2% | $44.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 59 | BlackRock ✦ (passive) | 254.06K | -22.2% | $44.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 60 | BlackRock ✦ (passive) | 254.06K | -22.2% | $44.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 61 | BlackRock ✦ (passive) | 254.06K | -22.2% | $44.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 62 | BlackRock ✦ (passive) | 254.06K | -22.2% | $44.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 63 | BlackRock ✦ (passive) | 254.06K | -22.2% | $44.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 64 | BlackRock ✦ (passive) | 254.06K | -22.2% | $44.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 65 | BlackRock ✦ (passive) | 254.06K | -22.2% | $44.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 66 | Capital World Investors ✦ | 228.38K | New | $39.97M | 0.0% | New | 1 | SEC ↗ |
| 67 | Millennium Management ✦ | 222.18K | -64.0% | $38.88M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 68 | T. Rowe Price ✦ | 117.33K | -90.1% | $20.53M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 69 | Geode Capital Management ✦ (passive) | 93.72K | +11.1% | $16.40M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 70 | The Vanguard Group ✦ (passive) | 88.56K | -60.6% | $15.50M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 71 | The Vanguard Group ✦ (passive) | 88.56K | -60.6% | $15.50M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 72 | The Vanguard Group ✦ (passive) | 88.56K | -60.6% | $15.50M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 73 | Two Sigma Investments ✦ | 28.96K | -78.2% | $5.07M | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Glenview Capital | $65.00M | 1.6% |
| Capital World Investors | $39.97M | 0.0% |
Exited
| Norges Bank | $158.64M | was 0.0% |
| Baupost Group | $58.91M | was 1.4% |
| Renaissance Technologies | $47.25M | was 0.1% |
| Adage Capital Partners | $5.27M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 414 holders, 78.10M shares, $8.66B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 11
O'Neill Julie
Director · 105 sh · $17,196
Aug 11
Murphy Ronan Martin
Director · 67 sh · $11,089
Aug 11
Murray Ciaran
Director · 280 sh · $45,562
Aug 11
Murray Ciaran
Director · 305 sh · $49,950
Aug 11
Murray Ciaran
Director · 1.88K sh · $309,204
Aug 11
Murray Ciaran
Director · 212 sh · $35,088
Aug 11
O'Neill Julie
Director · 95 sh · $15,458
Aug 11
O'Neill Julie
Director · 642 sh · $105,590
Aug 11
O'Neill Julie
Director · 73 sh · $12,082
Aug 11
Whitaker Anne Clem
Director · 88 sh · $14,319
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Aug 13
SC 13G/A — Invesco Ltd.
Aug 06
SC 13G/A — FMR LLC
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q3 2025 ·
Methodology ·
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