Who owns ICON Public Limited (ICLR)
Which tracked institutional funds hold ICLR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ICLR company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
193 tracked funds added or opened ICLR while 74 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ICLR’s largest tracked holder by dollar value, Artisan Partners Limited Partnership, sizes it at 2.4% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 2.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ICLR divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 403 tracked filers holding ICLR, 219 increased or opened the position and 235 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ICLR between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 26
- Woodline Partners LP$57M
- VOYA INVESTMENT MANAGEMENT LLC$50M
- KENSICO CAPITAL MANAGEMENT CORP$33M
- PRICE T ROWE ASSOCIATES INC /MD/$27M
- Oribel Capital Management, LP$17M
- TEACHER RETIREMENT SYSTEM OF TEXAS$17M
Full exits 48
- Sachem Head Capital Management LP$233M
- Madison Avenue Partners, LP$142M
- Holocene Advisors, LP$93M
- SOUND SHORE MANAGEMENT INC /CT/$69M
- Thrivent Financial for Lutherans$69M
- Impactive Capital LP$50M
Largest adds
- Artisan Partners Limited Partnership$584M
- Invesco Ltd.$500M
- FMR LLC$456M
- GREENHAVEN ASSOCIATES INC$317M
- HARRIS ASSOCIATES L P$295M
- WELLINGTON MANAGEMENT GROUP LLP$270M
Largest trims
- ALLIANCEBERNSTEIN L.P.$93M
- NORGES BANK$40M
- Sio Capital Management, LLC$19M
- NEW YORK STATE COMMON RETIREMENT FUND$17M
- MANUFACTURERS LIFE INSURANCE COMPANY, THE$14M
- BALYASNY ASSET MANAGEMENT L.P.$14M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Artisan Partners Limited Partnership added | 8,636,406 | $1.5B | 11.3% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 5,320,054 | $924M | 7.0% | 2026-Q2 |
| FMR LLC added | 5,271,321 | $916M | 6.9% | 2026-Q2 |
| Invesco Ltd. added | 5,264,236 | $914M | 6.9% | 2026-Q2 |
| HARRIS ASSOCIATES L P added | 4,468,146 | $776M | 5.8% | 2026-Q2 |
| Brave Warrior Advisors, LLC added | 3,153,308 | $548M | 4.1% | 2026-Q2 |
| GREENHAVEN ASSOCIATES INC added | 3,100,615 | $539M | 4.1% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 2,950,974 | $513M | 3.9% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 2,105,171 | $369M | 2.8% | 2026-Q2 |
| Ruane, Cunniff & Goldfarb L.P. added | 2,048,087 | $356M | 2.7% | 2026-Q2 |
| Boston Partners added | 1,620,730 | $281M | 2.1% | 2026-Q2 |
| Trinity Street Asset Management LLP added | 1,535,462 | $267M | 2.0% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 1,378,196 | $153M | 1.1% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 1,357,143 | $236M | 1.8% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,270,230 | $221M | 1.7% | 2026-Q2 |
| EARNEST PARTNERS LLC added | 1,242,639 | $216M | 1.6% | 2026-Q2 |
| Maple Rock Capital Partners Inc. added | 1,199,600 | $208M | 1.6% | 2026-Q2 |
| 1832 Asset Management L.P. added | 1,194,860 | $208M | 1.6% | 2026-Q2 |
| BRANDES INVESTMENT PARTNERS, LP trimmed | 1,185,774 | $206M | 1.6% | 2026-Q2 |
| Capital World Investors added | 1,106,056 | $192M | 1.4% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 979,596 | $170M | 1.3% | 2026-Q2 |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. added | 961,665 | $167M | 1.3% | 2026-Q2 |
| SEI INVESTMENTS CO added | 902,185 | $157M | 1.2% | 2026-Q2 |
| EQUITY INVESTMENT CORP trimmed | 888,875 | $154M | 1.2% | 2026-Q2 |
| LYRICAL ASSET MANAGEMENT LP trimmed | 881,179 | $153M | 1.2% | 2026-Q2 |
| NORGES BANK trimmed | 820,998 | $143M | 1.1% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 771,084 | $136M | 1.0% | 2026-Q2 |
| Stephens Investment Management Group LLC added | 720,261 | $125M | 0.9% | 2026-Q2 |
| First Pacific Advisors, LP trimmed | 606,523 | $105M | 0.8% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 599,198 | $104M | 0.8% | 2026-Q2 |
| LAKEWOOD CAPITAL MANAGEMENT, LP trimmed | 585,200 | $102M | 0.8% | 2026-Q2 |
| UBS Group AG trimmed | 546,437 | $95M | 0.7% | 2026-Q2 |
| BlackRock, Inc. added | 534,935 | $93M | 0.7% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 503,099 | $87M | 0.7% | 2026-Q2 |
| Zurich Insurance Group Ltd/FI added | 481,208 | $84M | 0.6% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 450,717 | $78M | 0.6% | 2026-Q2 |
| STATE STREET CORP trimmed | 437,853 | $76M | 0.6% | 2026-Q2 |
| MORGAN STANLEY added | 414,192 | $72M | 0.5% | 2026-Q2 |
| Aberdeen Group plc trimmed | 394,362 | $69M | 0.5% | 2026-Q2 |
| BAMCO INC /NY/ trimmed | 376,805 | $65M | 0.5% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 374,800 | $65M | 0.5% | 2026-Q2 |
| HUDSON EDGE INVESTMENT PARTNERS INC. added | 366,477 | $64M | 0.5% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 365,945 | $64M | 0.5% | 2026-Q2 |
| Woodline Partners LP added | 327,184 | $57M | 0.4% | 2026-Q2 |
| Eagle Health Investments LP trimmed | 308,143 | $54M | 0.4% | 2026-Q2 |
| Zuckerman Investment Group, LLC added | 294,439 | $51M | 0.4% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 289,918 | $50M | 0.4% | 2026-Q2 |
| River Road Asset Management, LLC trimmed | 285,137 | $50M | 0.4% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 246,018 | $43M | 0.3% | 2026-Q2 |
| PERRY CREEK CAPITAL LP | 245,000 | $43M | 0.3% | 2026-Q2 |
| CIBC Bancorp USA Inc. added | 231,237 | $40M | 0.3% | 2026-Q2 |
| Legal & General Group Plc added | 229,796 | $40M | 0.3% | 2026-Q2 |
| Hyperion Capital Advisors LP added | 224,665 | $39M | 0.3% | 2026-Q2 |
| BROWN ADVISORY INC added | 202,339 | $35M | 0.3% | 2026-Q2 |
| Diamond Hill Capital Management, LLC (Investment Advisor) trimmed | 194,618 | $34M | 0.3% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 194,040 | $34M | 0.3% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 191,976 | $33M | 0.3% | 2026-Q2 |
| KENSICO CAPITAL MANAGEMENT CORP added | 188,000 | $33M | 0.2% | 2026-Q2 |
| MARSHALL WACE, LLP added | 175,440 | $30M | 0.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 153,981 | $27M | 0.2% | 2026-Q2 |
| Fisher Funds Management LTD trimmed | 149,726 | $26M | 0.2% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 148,573 | $26M | 0.2% | 2026-Q2 |
| Stanley Capital Management, LLC added | 140,160 | $24M | 0.2% | 2026-Q2 |
| PFM Health Sciences, LP added | 136,482 | $24M | 0.2% | 2026-Q2 |
| Eldred Rock Partners, LLC trimmed | 134,248 | $23M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 133,841 | $23M | 0.2% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 122,943 | $21M | 0.2% | 2026-Q2 |
| Foresight Group Ltd Liability Partnership added | 119,181 | $21M | 0.2% | 2026-Q2 |
| Polar Capital Holdings Plc added | 116,939 | $20M | 0.2% | 2026-Q2 |
| Corient Private Wealth LP trimmed | 114,843 | $20M | 0.2% | 2026-Q2 |
| Vident Advisory, LLC added | 114,280 | $20M | 0.1% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 113,407 | $20M | 0.1% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 106,275 | $18M | 0.1% | 2026-Q2 |
| FRONTIER CAPITAL MANAGEMENT CO LLC trimmed | 104,335 | $18M | 0.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 98,639 | $17M | 0.1% | 2026-Q2 |
| Oribel Capital Management, LP new | 98,100 | $17M | 0.1% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ added | 97,601 | $17M | 0.1% | 2026-Q2 |
| TEACHER RETIREMENT SYSTEM OF TEXAS new | 97,118 | $17M | 0.1% | 2026-Q2 |
| Sio Capital Management, LLC trimmed | 88,186 | $15M | 0.1% | 2026-Q2 |
| Distillate Capital Partners LLC trimmed | 86,720 | $15M | 0.1% | 2026-Q2 |
| STATE OF MICHIGAN RETIREMENT SYSTEM | 85,070 | $15M | 0.1% | 2026-Q2 |
| Sone Capital Management, LLC new | 83,333 | $14M | 0.1% | 2026-Q2 |
| FARMERS & MERCHANTS INVESTMENTS INC trimmed | 82,928 | $14M | 0.1% | 2026-Q2 |
| PARTHENON LLC trimmed | 78,653 | $14M | 0.1% | 2026-Q2 |
| Leith Wheeler Investment Counsel Ltd. trimmed | 75,794 | $13M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 69,698 | $12M | 0.1% | 2026-Q2 |
| FIRETRAIL INVESTMENTS PTY LTD added | 69,624 | $12M | 0.1% | 2026-Q2 |
| MUHLENKAMP & CO INC added | 66,337 | $12M | 0.1% | 2026-Q2 |
| Arvin Capital Management LP added | 64,820 | $11M | 0.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 62,839 | $11M | 0.1% | 2026-Q2 |
| Khrom Capital Management LLC new | 61,900 | $11M | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 54,575 | $9M | 0.1% | 2026-Q2 |
| Verition Fund Management LLC added | 53,631 | $9M | 0.1% | 2026-Q2 |
| GATEWAY INVESTMENT ADVISERS LLC trimmed | 53,557 | $9M | 0.1% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 52,381 | $9M | 0.1% | 2026-Q2 |
| OSBORNE PARTNERS CAPITAL MANAGEMENT, LLC trimmed | 48,671 | $8M | 0.1% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 48,483 | $8M | 0.1% | 2026-Q2 |
| Trexquant Investment LP trimmed | 48,182 | $8M | 0.1% | 2026-Q2 |
| 683 Capital Management, LLC trimmed | 48,000 | $8M | 0.1% | 2026-Q2 |
| CAPITAL INTERNATIONAL SARL added | 46,479 | $8M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.