Latest Period
Q1 2026
Security Snapshot
ICON PLC - Ordinary shares, par value 0.06 euros (ICLR) Institutional Ownership
CUSIP: G4705A100
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
410
Shares (Excl. Options)
76,723,900
Price
$110.66
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- Security type / class
- Equity / Ordinary shares, par value 0.06 euros
- Symbol
- ICLR on Nasdaq
- Shares outstanding
- 76,338,895
- Reported price per share
- $117.38
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 76,723,900
- Total reported value
- $8,489,168,288
- Portfolio coverage rank
- 0.02%
- Share change
- +1,350,705
- Value change
- -$980,105,254
- Number of holders
- 410
Security identity
2 facts
Issuer context
2 facts
Latest holder snapshot
7 facts
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Key facts
- ICLR - ICON PLC - Ordinary shares, par value 0.06 euros is tracked under CUSIP G4705A100.
- 410 institutions reported positions in Q1 2026.
- 6 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 509 to 410 between Q4 2025 and Q1 2026.
- Reported value moved from $14,095,556,833 to $8,489,168,288.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 410 institutions filings for Q1 2026.
Security key
G4705A100
Latest holder period
Q1 2026
13F holders
410
13D/G owners
6
CIK / CUSIP context first
Open Q1 2026 holders
ICLR full holder history
ICON PLC SEC filings
ICON PLC company facts
ICON PLC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G4705A100:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
6
Security
ICLR
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Artisan Partners Limited Partnership | 11% | +21% | $669,573,144 | +$94,208,755 | 8,361,303 | +16% | Artisan Partners Asset Management Inc. | 27 Feb 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | 7.7% | +28% | $630,921,048 | +$136,138,530 | 5,913,037 | +28% | Wellington Management Group LLP | 31 Mar 2026 |
| HARRIS ASSOCIATES L P | 5.7% | $464,285,524 | 4,351,317 | HARRIS ASSOCIATES L P | 31 Mar 2026 | |||
| FMR LLC | 5.5% | $445,366,387 | 4,174,006 | FMR LLC | 31 Mar 2026 | |||
| Invesco Ltd. | 5.1% | $413,875,322 | 3,878,869 | Invesco Ltd. | 31 Mar 2026 | |||
| WCM INVESTMENT MANAGEMENT, LLC | 0.25% | $26,956,720 | 199,946 | WCM Investment Management, LLC | 30 Jun 2025 |
As of 31 Mar 2026, 410 institutional investors reported holding 76,723,900 shares of ICON PLC - Ordinary shares, par value 0.06 euros (ICLR). This represents 101% of the company’s total 76,338,895 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
74%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Artisan Partners Limited Partnership | 11% | 8,278,945 | +20% | 1.5% | $916,148,054 |
| WELLINGTON MANAGEMENT GROUP LLP | 7.7% | 5,913,037 | +36% | 0.12% | $654,336,675 |
| HARRIS ASSOCIATES L P | 5.7% | 4,351,317 | +73% | 0.64% | $481,516,739 |
| FMR LLC | 5.5% | 4,174,006 | +35% | 0.02% | $461,895,449 |
| Invesco Ltd. | 5.1% | 3,878,869 | +3.2% | 0.07% | $429,235,666 |
| PRINCIPAL FINANCIAL GROUP INC | 4.3% | 3,311,771 | +10% | 0.2% | $366,480,578 |
| Brave Warrior Advisors, LLC | 3.9% | 2,996,811 | 8.2% | $331,627,105 | |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 3.6% | 2,727,824 | +16% | 0.11% | $304,904,705 |
| Sachem Head Capital Management LP | 2.8% | 2,105,000 | 5.6% | $232,939,300 | |
| GREENHAVEN ASSOCIATES INC | 2.6% | 2,002,411 | +11412% | 3.6% | $221,586,801 |
| Ruane, Cunniff & Goldfarb L.P. | 2.1% | 1,634,611 | -2.7% | 3% | $180,886,053 |
| BRANDES INVESTMENT PARTNERS, LP | 1.9% | 1,435,053 | +85% | 1.1% | $158,804,315 |
| Madison Avenue Partners, LP | 1.7% | 1,282,838 | 6.2% | $141,958,853 | |
| Trinity Street Asset Management LLP | 1.6% | 1,208,148 | +13% | 9.2% | $133,693,657 |
| D. E. Shaw & Co., Inc. | 1.6% | 1,198,555 | +83% | 0.1% | $132,632,096 |
| 1832 Asset Management L.P. | 1.6% | 1,193,240 | -0.92% | 0.17% | $132,043,938 |
| Capital World Investors | 1.4% | 1,104,831 | -26% | 0.02% | $122,260,598 |
| EQUITY INVESTMENT CORP | 1.4% | 1,096,395 | +76% | 2.4% | $121,327,085 |
| First Pacific Advisors, LP | 1.3% | 991,075 | +1% | 1.5% | $109,672,359 |
| LYRICAL ASSET MANAGEMENT LP | 1.2% | 938,204 | -3.1% | 1.6% | $103,821,655 |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. | 1.2% | 918,713 | +24% | 0.89% | $101,664,781 |
| EARNEST PARTNERS LLC | 1.2% | 885,790 | -0.48% | 0.4% | $98,021,521 |
| Holocene Advisors, LP | 1.1% | 840,845 | +419% | 0.23% | $93,047,908 |
| Boston Partners | 1.1% | 835,139 | -34% | 0.1% | $92,419,731 |
| FRANKLIN RESOURCES INC | 1.1% | 816,085 | -73% | 0.02% | $86,495,975 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 76,723,900 | $8,489,168,288 | -$980,105,254 | $110.66 | 410 |
| 2025 Q4 | 77,324,467 | $14,095,556,833 | +$563,581,660 | $182.22 | 509 |
| 2025 Q3 | 74,377,895 | $13,023,560,107 | -$176,119,604 | $175.00 | 506 |
| 2025 Q2 | 76,791,411 | $11,178,935,190 | +$159,733,466 | $145.45 | 480 |
| 2025 Q1 | 74,489,454 | $13,050,924,618 | -$528,030,891 | $174.99 | 549 |
| 2024 Q4 | 76,038,063 | $15,951,367,769 | -$651,647,444 | $209.71 | 587 |
| 2024 Q3 | 77,759,120 | $22,348,580,947 | -$85,319,426 | $287.31 | 652 |
| 2024 Q2 | 77,295,616 | $24,235,258,946 | -$87,857,874 | $313.47 | 670 |
| 2024 Q1 | 77,623,418 | $26,047,815,750 | -$308,391,818 | $335.95 | 639 |
| 2023 Q4 | 77,555,794 | $21,967,290,922 | -$285,900,203 | $283.07 | 593 |
| 2023 Q3 | 79,794,193 | $19,649,497,222 | +$183,510,507 | $246.25 | 546 |
| 2023 Q2 | 78,870,444 | $19,742,098,119 | +$1,089,811,895 | $250.20 | 524 |
| 2023 Q1 | 74,716,469 | $15,955,091,516 | +$113,958,731 | $213.59 | 527 |
| 2022 Q4 | 73,866,132 | $14,361,834,563 | -$313,078,427 | $194.25 | 516 |
| 2022 Q3 | 75,415,895 | $13,864,584,480 | +$112,923,571 | $183.78 | 473 |
| 2022 Q2 | 74,209,990 | $16,083,672,391 | +$346,153,676 | $216.70 | 498 |
| 2022 Q1 | 72,872,144 | $17,721,802,608 | -$89,850,028 | $243.22 | 500 |
| 2021 Q4 | 72,834,119 | $22,515,024,773 | -$9,217,914 | $309.70 | 536 |
| 2021 Q3 | 72,953,264 | $19,117,236,220 | +$3,665,800,590 | $262.02 | 499 |
| 2021 Q2 | 59,050,843 | $12,210,645,017 | +$1,788,506,723 | $206.71 | 441 |
| 2021 Q1 | 50,406,039 | $9,899,558,894 | +$748,154,919 | $196.37 | 420 |
| 2020 Q4 | 46,561,126 | $9,083,752,864 | +$35,609,160 | $194.98 | 413 |
| 2020 Q3 | 46,209,890 | $8,832,855,052 | +$25,561,020 | $191.09 | 382 |
| 2020 Q2 | 46,091,133 | $7,767,252,496 | +$183,568,059 | $168.46 | 374 |
| 2020 Q1 | 44,999,508 | $6,119,126,271 | -$186,022,873 | $136.00 | 359 |