Security record · archived quarter
ICLR
ICON Public Limited Company · Healthcare · Medical - Diagnostics & Research
119Tracked holders
-2Δ holders
53.17MShares held
$9.70BReported value
+2New positions
−3Exits
Momentum inputs (comparable managers):
holder breadth -1.7% ·
share flow +1.7% ·
net new positions -0.8%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 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 · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Artisan Partners Limited Partnership | 6.87M | — | $1.25B | 1.9% | n/c | 1 | SEC ↗ |
| 2 | Wellington Management ✦ | 4.35M | -6.2% | $792.79M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 3 | Wellington Management ✦ | 4.35M | -6.2% | $792.79M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 4 | Wellington Management ✦ | 4.35M | -6.2% | $792.79M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 5 | Wellington Management ✦ | 4.35M | -6.2% | $792.79M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 6 | Wellington Management ✦ | 4.35M | -6.2% | $792.79M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 7 | Wellington Management ✦ | 4.35M | -6.2% | $792.79M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 8 | Wellington Management ✦ | 4.35M | -6.2% | $792.79M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 9 | Wellington Management ✦ | 4.35M | -6.2% | $792.79M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 10 | Wellington Management ✦ | 4.35M | -6.2% | $792.79M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 11 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 12 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 13 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 14 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 15 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 16 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 17 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 18 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 19 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 20 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 21 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 22 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 23 | Invesco Ltd. | 3.76M | — | $684.58M | 0.1% | n/c | 1 | SEC ↗ |
| 24 | Fidelity (FMR) ✦ | 3.10M | +60.2% | $564.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 25 | Fidelity (FMR) ✦ | 3.10M | +60.2% | $564.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 26 | Fidelity (FMR) ✦ | 3.10M | +60.2% | $564.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 3.10M | +60.2% | $564.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 28 | Fidelity (FMR) ✦ | 3.10M | +60.2% | $564.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 29 | Principal Financial Group Inc | 3.00M | — | $546.94M | 0.3% | n/c | 1 | SEC ↗ |
| 30 | Franklin Resources Inc | 2.99M | — | $545.41M | 0.1% | n/c | 1 | SEC ↗ |
| 31 | Franklin Resources Inc | 2.99M | — | $545.41M | 0.1% | n/c | 1 | SEC ↗ |
| 32 | Franklin Resources Inc | 2.99M | — | $545.41M | 0.1% | n/c | 1 | SEC ↗ |
| 33 | Franklin Resources Inc | 2.99M | — | $545.41M | 0.1% | n/c | 1 | SEC ↗ |
| 34 | Franklin Resources Inc | 2.99M | — | $545.41M | 0.1% | n/c | 1 | SEC ↗ |
| 35 | Franklin Resources Inc | 2.99M | — | $545.41M | 0.1% | n/c | 1 | SEC ↗ |
| 36 | Franklin Resources Inc | 2.99M | — | $545.41M | 0.1% | n/c | 1 | SEC ↗ |
| 37 | Franklin Resources Inc | 2.99M | — | $545.41M | 0.1% | n/c | 1 | SEC ↗ |
| 38 | Franklin Resources Inc | 2.99M | — | $545.41M | 0.1% | n/c | 1 | SEC ↗ |
| 39 | Ninety One UK Ltd | 2.95M | — | $536.79M | 1.2% | n/c | 1 | SEC ↗ |
| 40 | Harris Associates (Oakmark) ✦ | 2.51M | +7.2% | $457.40M | 0.6% | ▲ Add | 3 | SEC ↗ |
| 41 | Massachusetts Financial Services Co… | 2.36M | — | $429.50M | 0.1% | n/c | 1 | SEC ↗ |
| 42 | Massachusetts Financial Services Co… | 2.36M | — | $429.50M | 0.1% | n/c | 1 | SEC ↗ |
| 43 | Massachusetts Financial Services Co… | 2.36M | — | $429.50M | 0.1% | n/c | 1 | SEC ↗ |
| 44 | Massachusetts Financial Services Co… | 2.36M | — | $429.50M | 0.1% | n/c | 1 | SEC ↗ |
| 45 | Massachusetts Financial Services Co… | 2.36M | — | $429.50M | 0.1% | n/c | 1 | SEC ↗ |
| 46 | Massachusetts Financial Services Co… | 2.36M | — | $429.50M | 0.1% | n/c | 1 | SEC ↗ |
| 47 | Massachusetts Financial Services Co… | 2.36M | — | $429.50M | 0.1% | n/c | 1 | SEC ↗ |
| 48 | Massachusetts Financial Services Co… | 2.36M | — | $429.50M | 0.1% | n/c | 1 | SEC ↗ |
| 49 | Capital World Investors ✦ | 1.50M | +555.2% | $272.69M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Alliancebernstein L.P. | 1.27M | — | $231.87M | 0.1% | n/c | 1 | SEC ↗ |
| 51 | Boston Partners | 1.26M | — | $229.40M | 0.2% | n/c | 1 | SEC ↗ |
| 52 | Boston Partners | 1.26M | — | $229.40M | 0.2% | n/c | 1 | SEC ↗ |
| 53 | Boston Partners | 1.26M | — | $229.40M | 0.2% | n/c | 1 | SEC ↗ |
| 54 | Boston Partners | 1.26M | — | $229.40M | 0.2% | n/c | 1 | SEC ↗ |
| 55 | 1832 Asset Management L.P. | 1.20M | — | $219.45M | 0.3% | n/c | 1 | SEC ↗ |
| 56 | Allspring Global Investments… | 1.08M | — | $203.80M | 0.3% | n/c | 1 | SEC ↗ |
| 57 | Allspring Global Investments… | 1.08M | — | $203.80M | 0.3% | n/c | 1 | SEC ↗ |
| 58 | Allspring Global Investments… | 1.08M | — | $203.80M | 0.3% | n/c | 1 | SEC ↗ |
| 59 | American Century Companies Inc | 1.04M | — | $189.15M | 0.1% | n/c | 1 | SEC ↗ |
| 60 | Norges Bank ✦ (passive) | 878.46K | New | $160.07M | 0.0% | New | 1 | SEC ↗ |
| 61 | Sei Investments Co | 785.94K | — | $143.21M | 0.1% | n/c | 1 | SEC ↗ |
| 62 | Sei Investments Co | 785.94K | — | $143.21M | 0.1% | n/c | 1 | SEC ↗ |
| 63 | JPMorgan Chase ✦ | 767.92K | +176.5% | $139.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | JPMorgan Chase ✦ | 767.92K | +176.5% | $139.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 65 | JPMorgan Chase ✦ | 767.92K | +176.5% | $139.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 66 | JPMorgan Chase ✦ | 767.92K | +176.5% | $139.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | JPMorgan Chase ✦ | 767.92K | +176.5% | $139.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | JPMorgan Chase ✦ | 767.92K | +176.5% | $139.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | JPMorgan Chase ✦ | 767.92K | +176.5% | $139.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | JPMorgan Chase ✦ | 767.92K | +176.5% | $139.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 71 | Jennison Associates Llc | 677.98K | — | $123.54M | 0.1% | n/c | 1 | SEC ↗ |
| 72 | Jennison Associates Llc | 677.98K | — | $123.54M | 0.1% | n/c | 1 | SEC ↗ |
| 73 | D. E. Shaw & Co. ✦ | 653.32K | -55.8% | $119.05M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 74 | D. E. Shaw & Co. ✦ | 653.32K | -55.8% | $119.05M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 75 | Clearbridge Investments, LLC | 616.99K | — | $112.43M | 0.1% | n/c | 1 | SEC ↗ |
| 76 | Bank Of America Corp /De/ | 609.66K | — | $111.09M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Bank Of America Corp /De/ | 609.66K | — | $111.09M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Bank Of America Corp /De/ | 609.66K | — | $111.09M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | Bank Of America Corp /De/ | 609.66K | — | $111.09M | 0.0% | n/c | 1 | SEC ↗ |
| 80 | Bank Of America Corp /De/ | 609.66K | — | $111.09M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Bank Of America Corp /De/ | 609.66K | — | $111.09M | 0.0% | n/c | 1 | SEC ↗ |
| 82 | Bank Of America Corp /De/ | 609.66K | — | $111.09M | 0.0% | n/c | 1 | SEC ↗ |
| 83 | Bank Of America Corp /De/ | 609.66K | — | $111.09M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | UBS Group AG | 538.64K | — | $98.15M | 0.0% | n/c | 1 | SEC ↗ |
| 85 | UBS Group AG | 538.64K | — | $98.15M | 0.0% | n/c | 1 | SEC ↗ |
| 86 | UBS Group AG | 538.64K | — | $98.15M | 0.0% | n/c | 1 | SEC ↗ |
| 87 | UBS Group AG | 538.64K | — | $98.15M | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Bamco Inc /Ny/ | 534.25K | — | $97.35M | 0.3% | n/c | 1 | SEC ↗ |
| 89 | Dimensional Fund Advisors Lp | 522.97K | — | $95.30M | 0.0% | n/c | 1 | SEC ↗ |
| 90 | Dimensional Fund Advisors Lp | 522.97K | — | $95.30M | 0.0% | n/c | 1 | SEC ↗ |
| 91 | Dimensional Fund Advisors Lp | 522.97K | — | $95.30M | 0.0% | n/c | 1 | SEC ↗ |
| 92 | Dimensional Fund Advisors Lp | 522.97K | — | $95.30M | 0.0% | n/c | 1 | SEC ↗ |
| 93 | Dimensional Fund Advisors Lp | 522.97K | — | $95.30M | 0.0% | n/c | 1 | SEC ↗ |
| 94 | Morgan Stanley ✦ | 473.64K | -5.3% | $86.31M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 95 | Morgan Stanley ✦ | 473.64K | -5.3% | $86.31M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 96 | Morgan Stanley ✦ | 473.64K | -5.3% | $86.31M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 97 | Morgan Stanley ✦ | 473.64K | -5.3% | $86.31M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 98 | Morgan Stanley ✦ | 473.64K | -5.3% | $86.31M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 99 | Morgan Stanley ✦ | 473.64K | -5.3% | $86.31M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 100 | Morgan Stanley ✦ | 473.64K | -5.3% | $86.31M | 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
| Norges Bank | $160.07M | 0.0% |
Exited
| Glenview Capital | $65.00M | was 1.6% |
| Millennium Management | $38.88M | was 0.0% |
| T. Rowe Price | $20.53M | 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: Q4 2025 ·
Methodology ·
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