ICLR ICON plc
ICON plc (ICLR) Institutional Ownership
What the institutions did with ICLR last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| FMR LLC | 6.6M | 32.2% |
| GREENHAVEN ASSOCIATES INC | 3.1M | 15.0% |
| PRINCIPAL FINANCIAL GROUP INC | 2.9M | 14.3% |
| DIMENSIONAL FUND ADVISORS LP | 1.7M | 8.2% |
| Trinity Street Asset Management LLP | 1.5M | 7.3% |
| EQUITY INVESTMENT CORP | 823.6K | 4.0% |
| Thrivent Financial for Lutherans | 800.5K | 3.9% |
| Russell Investments Group, Ltd. | 505.2K | 2.5% |
| Aberdeen Group plc | 421.2K | 2.1% |
| HUDSON EDGE INVESTMENT PARTNERS INC. | 376.4K | 1.8% |
| Eldred Rock Partners, LLC | 135.2K | 0.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 102.4K | 0.5% |
| BANK OF MONTREAL /CAN/ | 98.0K | 0.5% |
| ACADIAN ASSET MANAGEMENT LLC | 88.6K | 0.4% |
| FARMERS & MERCHANTS INVESTMENTS INC | 80.0K | 0.4% |
| PARTHENON LLC | 79.6K | 0.4% |
| Handelsbanken Fonder AB | 73.9K | 0.4% |
| FIRETRAIL INVESTMENTS PTY LTD | 69.1K | 0.3% |
| STATE OF MICHIGAN RETIREMENT SYSTEM | 65.1K | 0.3% |
| Allspring Global Investments Holdings, LLC | 52.2K | 0.3% |
| Amundi | 48.9K | 0.2% |
| BLAIR WILLIAM & CO/IL | 43.0K | 0.2% |
| Sendero Wealth Management, LLC | 40.2K | 0.2% |
| GATEWAY INVESTMENT ADVISERS LLC | 35.1K | 0.2% |
| Swedbank AB | 34.6K | 0.2% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| FMR LLC | Increased | 5.3M | 6.6M | +1.3M |
| DIMENSIONAL FUND ADVISORS LP | Increased | 1.3M | 1.7M | +402.3K |
| Fisher Funds Management LTD | Sold Out | 149.7K | 0 | -149.7K |
| Russell Investments Group, Ltd. | Reduced | 599.2K | 505.2K | -93.9K |
| ACADIAN ASSET MANAGEMENT LLC | New | 0 | 88.6K | +88.6K |
| EQUITY INVESTMENT CORP | Reduced | 888.9K | 823.6K | -65.3K |
| Trinity Street Asset Management LLP | Reduced | 1.5M | 1.5M | -48.1K |
| Swedbank AB | New | 0 | 34.6K | +34.6K |
| BLAIR WILLIAM & CO/IL | Increased | 9.0K | 43.0K | +34.0K |
| Concurrent Investment Advisors, LLC | Reduced | 36.5K | 2.9K | -33.5K |
| Quartz Partners, LLC | Sold Out | 33.4K | 0 | -33.4K |
| GREENHAVEN ASSOCIATES INC | Reduced | 3.1M | 3.1M | -31.6K |
| Aberdeen Group plc | Increased | 394.4K | 421.2K | +26.8K |
| DEUTSCHE BANK AG\ | Reduced | 45.4K | 25.3K | -20.1K |
| STATE OF MICHIGAN RETIREMENT SYSTEM | Reduced | 85.1K | 65.1K | -20.0K |
| GATEWAY INVESTMENT ADVISERS LLC | Reduced | 53.6K | 35.1K | -18.4K |
| Squarepoint Ops LLC | Reduced | 33.0K | 14.9K | -18.1K |
| BARCLAYS PLC | Increased | 4.8K | 22.6K | +17.7K |
| CITIGROUP INC | Increased | 10.3K | 24.2K | +13.8K |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 3.0M | 2.9M | -13.6K |
| Riverwater Partners LLC | New | 0 | 13.0K | +13.0K |
| BANQUE PICTET & CIE SA | Sold Out | 12.0K | 0 | -12.0K |
| Professional Financial Advisors, LLC | New | 0 | 11.5K | +11.5K |
| VELA Investment Management, LLC | Increased | 12.2K | 22.6K | +10.4K |
| Allspring Global Investments Holdings, LLC | Increased | 41.8K | 52.2K | +10.4K |
| HUDSON EDGE INVESTMENT PARTNERS INC. | Increased | 366.5K | 376.4K | +10.0K |
| State of Wyoming | Reduced | 22.2K | 13.2K | -9.1K |
| Cambridge Investment Research Advisors, Inc. | Reduced | 16.6K | 8.4K | -8.2K |
| Amundi | Increased | 41.4K | 48.9K | +7.4K |
| MACKENZIE FINANCIAL CORP | Reduced | 16.5K | 9.4K | -7.1K |
| Apollon Wealth Management, LLC | Reduced | 19.8K | 12.8K | -7.0K |
| ASO GROUP Ltd | Sold Out | 5.5K | 0 | -5.5K |
| Pullen Investment Management, LLC | New | 0 | 5.3K | +5.3K |
| Sendero Wealth Management, LLC | Reduced | 45.4K | 40.2K | -5.2K |
| Bank of New York Mellon Corp | Reduced | 29.2K | 25.0K | -4.2K |
| Live Oak Private Wealth LLC | Reduced | 16.2K | 12.2K | -4.0K |
| NEW WAVE WEALTH ADVISORS LLC | Reduced | 7.5K | 3.5K | -4.0K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 98.6K | 102.4K | +3.8K |
| Verdence Capital Advisors LLC | New | 0 | 3.4K | +3.4K |
| Sara-Bay Financial | Sold Out | 3.1K | 0 | -3.1K |
| FARMERS & MERCHANTS INVESTMENTS INC | Reduced | 82.9K | 80.0K | -2.9K |
| THOMPSON SIEGEL & WALMSLEY LLC | Reduced | 35.1K | 32.3K | -2.8K |
| CenterBook Partners LP | Sold Out | 2.6K | 0 | -2.6K |
| CIBC Asset Management Inc | Reduced | 4.9K | 2.7K | -2.2K |
| Savant Capital, LLC | New | 0 | 2.2K | +2.2K |
| Handelsbanken Fonder AB | Increased | 71.8K | 73.9K | +2.1K |
| Thrivent Financial for Lutherans | Reduced | 802.4K | 800.5K | -2.0K |
| HighTower Advisors, LLC | Increased | 6.3K | 8.0K | +1.7K |
| Miller Global Investments, LLC | Reduced | 2.3K | 627 | -1.7K |
| Henshaw Capital LLC | Increased | 4.5K | 6.1K | +1.6K |
| Inspire Investing, LLC | Increased | 17.2K | 18.6K | +1.4K |
| Virtus Family Office LLC | Sold Out | 1.3K | 0 | -1.3K |
| MISSION WEALTH MANAGEMENT, LP | Sold Out | 1.3K | 0 | -1.3K |
| Nuveen, LLC | New | 0 | 1.3K | +1.3K |
| Frank, Rimerman Advisors LLC | Sold Out | 1.2K | 0 | -1.2K |
| Portside Wealth Group, LLC | New | 0 | 1.2K | +1.2K |
| TRUIST FINANCIAL CORP | Reduced | 9.1K | 8.0K | -1.1K |
| UMB Bank, n.a. | Reduced | 1.7K | 617 | -1.1K |
| US BANCORP \DE\ | Increased | 11.6K | 12.7K | +1.1K |
| CHOREO, LLC | Reduced | 3.3K | 2.4K | -980 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.