Security key
G4705A100
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 74,716,469
- Total 13F value
- $15,955,091,516
- Share change
- +504,760
- Put/Call ratio
- 28%
- SEC-reported price per share
- $213.59
- Number of holders
- 527
- Value change
- +$113,958,731
- Number of buys
- 253
- Number of sells
- 231
- Shares outstanding
- 76,293,275
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2023
Institutions
527
Top holders
10
ICLR full security history
Ownership snapshot
Full 13F holder table
ICON PLC SEC filings
ICON PLC company facts
Broader feeds
Ownership snapshot
Top reported holders of ICLR - ICON PLC - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
MASSACHUSETTS FINANCIAL S...
Disclosed value leader
MASSACHUSETTS FINANCIAL S...
Comparable rows
15/15
Latest evidence
31 Dec 2022
13F
Lead comparable stake: 11%
Showing 1-6 of 15 holder rows.
Quick read
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ leads the comparable SEC ownership view at 11%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s linked filing trail.
Comparable ownership
Top 5
MASSACHUSETTS FINANCIAL SERVICES ...
11%
WCM INVESTMENT MANAGEMENT, LLC
7.7%
LAZARD ASSET MANAGEMENT LLC
4.2%
Boston Partners
4.1%
WELLINGTON MANAGEMENT GROUP LLP
3.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ |
13F
Company
|
11%
|
$1,577,157,903
8,119,217 shares
|
— | 31 Dec 2022 |
| WCM INVESTMENT MANAGEMENT, LLC |
13F
Company
|
7.7%
|
$1,143,241,670
5,885,414 shares
|
— | 31 Dec 2022 |
| LAZARD ASSET MANAGEMENT LLC |
13F
Company
|
4.2%
|
$620,413,000
3,193,897 shares
|
— | 31 Dec 2022 |
| Boston Partners |
13F
Company
|
4.1%
|
$606,497,794
3,106,482 shares
|
— | 31 Dec 2022 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
3.6%
|
$540,512,474
2,782,561 shares
|
— | 31 Dec 2022 |
| FMR LLC |
13F
Company
|
3.1%
|
$464,182,686
2,389,615 shares
|
— | 31 Dec 2022 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
527
Shares
74,716,469
Rows available
527
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2023 vs Q1 2023 Across Filers
Q1 2023 holders
527
Q1 2023 holders
527
Holder diff
0
| Investor | Q1 2023 Shares | Q1 2023 Shares | Share Diff | Share Chg % | Q1 2023 value | Q1 2023 value | Value change | Value Chg % |
|---|