What does CUSIP G4705A100 represent in this 13F holders report?

CUSIP G4705A100 is the security identifier for ICLR - ICON PLC - Ordinary Shares used to aggregate holder disclosures.

How many institutions held ICLR - ICON PLC - Ordinary Shares in Q1 2021?

420 institutional investors reported ICLR - ICON PLC - Ordinary Shares for Q1 2021. Use the holders table for investor-level position and value details.

ICON PLC - Ordinary Shares (ICLR)

CUSIP: G4705A100

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Ordinary Shares
Shares outstanding: 76,709,202
Total 13F shares: 50,406,039
Share change: +3,804,394
Total reported value: $9,899,558,894
Put/Call ratio: 67%
Price per share: $196.37
Number of holders: 420
Value change: +$748,154,919
Number of buys: 212
Number of sells: 183

Quarterly Holders Quick Answers

What is CUSIP G4705A100?
CUSIP G4705A100 identifies ICLR - ICON PLC - Ordinary Shares in SEC institutional holdings data.

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SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2021
Previous quarter: Q4 2020

Recent filing periods for CUSIP G4705A100:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of ICLR - ICON PLC - Ordinary Shares (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	5.2%	3,989,007	$777,775,000	—	31 Dec 2020	13F
WCM INVESTMENT MANAGEMENT, LLC	13F	Company	5.2%	3,976,550	$775,348,000	—	31 Dec 2020	13F
COMGEST GLOBAL INVESTORS S.A.S.	13F	Company	3.2%	2,429,517	$473,708,000	—	31 Dec 2020	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	3%	2,336,376	$455,547,000	—	31 Dec 2020	13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	13F	Company	3%	2,268,437	$442,300,000	—	31 Dec 2020	13F
ACADIAN ASSET MANAGEMENT LLC	13F	Company	2.7%	2,069,370	$403,487,000	—	31 Dec 2020	13F
Clearbridge Investments, LLC	13F	Company	2.6%	1,993,372	$388,668,000	—	31 Dec 2020	13F
Pendal Group Ltd	13F	Company	2.5%	1,915,922	$373,566,000	—	31 Dec 2020	13F
Invesco Ltd.	13F	Company	2.1%	1,590,494	$310,115,000	—	31 Dec 2020	13F
WASATCH ADVISORS LP	13F	Company	2.1%	1,590,071	$310,032,000	—	31 Dec 2020	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	2%	1,565,313	$305,205,000	—	31 Dec 2020	13F
Ninety One UK Ltd	13F	Company	1.5%	1,188,436	$231,721,000	—	31 Dec 2020	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	1.2%	887,002	$172,948,000	—	31 Dec 2020	13F
WESTFIELD CAPITAL MANAGEMENT CO LP	13F	Company	1.1%	826,956	$161,240,000	—	31 Dec 2020	13F
FIL Ltd	13F	Company	1.1%	826,076	$161,067,000	—	31 Dec 2020	13F
Boston Partners	13F	Company	1%	768,114	$149,767,000	—	31 Dec 2020	13F
AMERICAN CAPITAL MANAGEMENT INC	13F	Company	0.94%	721,267	$140,633,000	—	31 Dec 2020	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.88%	678,425	$132,279,000	—	31 Dec 2020	13F
Neuberger Berman Group LLC	13F	Company	0.88%	673,378	$130,727,000	—	31 Dec 2020	13F
BAMCO INC /NY/	13F	Company	0.82%	629,423	$122,725,000	—	31 Dec 2020	13F
POLEN CAPITAL MANAGEMENT LLC	13F	Company	0.81%	623,697	$121,608,000	—	31 Dec 2020	13F
EARNEST PARTNERS LLC	13F	Company	0.78%	600,570	$117,099,000	—	31 Dec 2020	13F
Stephens Investment Management Group LLC	13F	Company	0.68%	519,591	$101,310,000	—	31 Dec 2020	13F
NORGES BANK	13F	Company	0.63%	482,044	$93,989,000	—	31 Dec 2020	13F
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	13F	Company	0.62%	479,287	$93,451,000	—	31 Dec 2020	13F
JANUS HENDERSON GROUP PLC	13F	Company	0.62%	477,309	$93,105,000	—	31 Dec 2020	13F
Baird Financial Group, Inc.	13F	Company	0.52%	401,118	$78,210,000	—	31 Dec 2020	13F
BROWN CAPITAL MANAGEMENT LLC	13F	Company	0.44%	340,696	$66,429,000	—	31 Dec 2020	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.42%	322,568	$62,894,000	—	31 Dec 2020	13F
BANK OF MONTREAL /CAN/	13F	Company	0.37%	284,498	$60,860,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	0.38%	289,929	$56,530,000	—	31 Dec 2020	13F
PALISADE CAPITAL MANAGEMENT, LP	13F	Company	0.33%	256,415	$49,996,000	—	31 Dec 2020	13F
LAZARD ASSET MANAGEMENT LLC	13F	Company	0.3%	227,023	$44,264,000	—	31 Dec 2020	13F
Grandeur Peak Global Advisors, LLC	13F	Company	0.29%	224,265	$43,727,000	—	31 Dec 2020	13F
AMERICAN CENTURY COMPANIES INC	13F	Company	0.29%	223,384	$43,555,000	—	31 Dec 2020	13F
LOOMIS SAYLES & CO L P	13F	Company	0.29%	222,798	$43,441,000	—	31 Dec 2020	13F
FMR LLC	13F	Company	0.26%	201,587	$39,305,000	—	31 Dec 2020	13F
SEI INVESTMENTS CO	13F	Company	0.26%	197,792	$38,567,000	—	31 Dec 2020	13F
CIBC Private Wealth Group LLC	13F	Company	0.24%	187,722	$36,602,000	—	31 Dec 2020	13F
ENVESTNET ASSET MANAGEMENT INC	13F	Company	0.24%	181,850	$35,457,000	—	31 Dec 2020	13F
Montanaro Asset Management Ltd	13F	Company	0.24%	181,550	$35,399,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	0.22%	170,298	$33,204,000	—	31 Dec 2020	13F
FEDERATED HERMES, INC.	13F	Company	0.19%	149,031	$29,058,000	—	31 Dec 2020	13F
Nuveen Asset Management, LLC	13F	Company	0.19%	148,231	$28,902,000	—	31 Dec 2020	13F
Marshall Wace North America L.P.	13F	Company	0.18%	135,361	$26,392,000	—	31 Dec 2020	13F
NORDEA INVESTMENT MANAGEMENT AB	13F	Company	0.17%	130,930	$25,529,000	—	31 Dec 2020	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.16%	125,363	$24,443,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.16%	124,248	$24,225,000	—	31 Dec 2020	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.16%	121,949	$23,777,000	—	31 Dec 2020	13F
PFM Health Sciences, LP	13F	Company	0.16%	121,323	$23,656,000	—	31 Dec 2020	13F

Institutional Holders of ICON PLC - Ordinary Shares (ICLR) as of Q1 2021

As of 31 Mar 2021, ICON PLC - Ordinary Shares (ICLR) was held by 420 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 50,406,039 shares. The largest 10 holders included MASSACHUSETTS FINANCIAL SERVICES CO /MA/, WCM INVESTMENT MANAGEMENT, LLC, WELLINGTON MANAGEMENT GROUP LLP, COMGEST GLOBAL INVESTORS S.A.S., Clearbridge Investments, LLC, RENAISSANCE TECHNOLOGIES LLC, ACADIAN ASSET MANAGEMENT LLC, Pendal Group Limited, WASATCH ADVISORS INC, and WESTFIELD CAPITAL MANAGEMENT CO LP. This page lists 420 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

413

Q1 2021 holders

420

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.