IMRX Immuneering Corporation
Immuneering Corporation (IMRX) Institutional Ownership
What the institutions did with IMRX 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 June 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 | 9.7M | 28.2% |
| BlackRock, Inc. | 4.4M | 12.7% |
| Sanofi | 2.7M | 7.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.3M | 6.6% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.9M | 5.6% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.4M | 4.0% |
| STATE STREET CORP | 1.0M | 2.9% |
| DCF Advisers, LLC | 790.0K | 2.3% |
| MARSHALL WACE, LLP | 731.9K | 2.1% |
| Connor, Clark & Lunn Investment Management Ltd. | 601.3K | 1.7% |
| ALETHEA CAPITAL MANAGEMENT, LLC | 472.9K | 1.4% |
| Summit Financial, LLC | 452.3K | 1.3% |
| UBS Group AG | 448.9K | 1.3% |
| Nuveen, LLC | 438.4K | 1.3% |
| NORTHERN TRUST CORP | 437.0K | 1.3% |
| LEVIN CAPITAL STRATEGIES, L.P. | 414.0K | 1.2% |
| CITADEL ADVISORS LLC | 386.4K | 1.1% |
| VANGUARD FIDUCIARY TRUST CO | 360.8K | 1.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 359.1K | 1.0% |
| GSA CAPITAL PARTNERS LLP | 343.3K | 1.0% |
| MILLENNIUM MANAGEMENT LLC | 330.4K | 1.0% |
| Burkehill Global Management, LP | 300.0K | 0.9% |
| TWO SIGMA INVESTMENTS, LP | 288.4K | 0.8% |
| Occam Crest Management LP | 278.5K | 0.8% |
| MORGAN STANLEY | 226.5K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BlackRock, Inc. | Increased | 1.5M | 4.4M | +2.9M |
| MARSHALL WACE, LLP | Reduced | 2.0M | 731.9K | -1.3M |
| MILLENNIUM MANAGEMENT LLC | Reduced | 1.1M | 330.4K | -772.3K |
| STATE STREET CORP | Increased | 268.5K | 1.0M | +733.5K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 637.9K | 1.4M | +732.8K |
| DCF Advisers, LLC | Increased | 141.5K | 790.0K | +648.5K |
| ALETHEA CAPITAL MANAGEMENT, LLC | Increased | 22.9K | 472.9K | +450.0K |
| Nuveen, LLC | New | 0 | 438.4K | +438.4K |
| LEVIN CAPITAL STRATEGIES, L.P. | Increased | 10.0K | 414.0K | +404.0K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New | 0 | 359.1K | +359.1K |
| NORTHERN TRUST CORP | Increased | 117.7K | 437.0K | +319.3K |
| Occam Crest Management LP | Reduced | 545.1K | 278.5K | -266.6K |
| GSA CAPITAL PARTNERS LLP | Increased | 76.8K | 343.3K | +266.6K |
| GOLDMAN SACHS GROUP INC | Reduced | 327.7K | 96.2K | -231.4K |
| D. E. Shaw & Co., Inc. | New | 0 | 203.7K | +203.7K |
| Connor, Clark & Lunn Investment Management Ltd. | Increased | 400.4K | 601.3K | +200.9K |
| Diametric Capital, LP | Sold Out | 174.9K | 0 | -174.9K |
| Squarepoint Ops LLC | Reduced | 226.0K | 57.7K | -168.4K |
| WELLINGTON MANAGEMENT GROUP LLP | Sold Out | 156.4K | 0 | -156.4K |
| 683 Capital Management, LLC | Sold Out | 150.7K | 0 | -150.7K |
| Permanent Capital Management, LP | New | 0 | 150.0K | +150.0K |
| Bank of New York Mellon Corp | New | 0 | 132.0K | +132.0K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 37.3K | 167.9K | +130.6K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 1.8M | 1.9M | +106.9K |
| BARCLAYS PLC | Reduced | 122.0K | 20.4K | -101.6K |
| Hudson Bay Capital Management LP | Sold Out | 95.9K | 0 | -95.9K |
| Fisher Asset Management, LLC | New | 0 | 88.3K | +88.3K |
| Weiss Asset Management LP | Sold Out | 88.0K | 0 | -88.0K |
| Prosight Management, LP | Reduced | 123.4K | 36.9K | -86.5K |
| Brevan Howard Capital Management LP | Sold Out | 86.2K | 0 | -86.2K |
| ENVESTNET ASSET MANAGEMENT INC | Increased | 21.9K | 105.8K | +83.9K |
| JANE STREET GROUP, LLC | Sold Out | 77.4K | 0 | -77.4K |
| Corient Private Wealth LP | New | 0 | 77.1K | +77.1K |
| Summit Financial, LLC | Increased | 376.7K | 452.3K | +75.5K |
| RENAISSANCE TECHNOLOGIES LLC | Sold Out | 72.9K | 0 | -72.9K |
| UBS Group AG | Increased | 376.3K | 448.9K | +72.6K |
| AMERIPRISE FINANCIAL INC | New | 0 | 71.5K | +71.5K |
| MORGAN STANLEY | Reduced | 296.1K | 226.5K | -69.6K |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | Sold Out | 67.5K | 0 | -67.5K |
| RHUMBLINE ADVISERS | New | 0 | 65.9K | +65.9K |
| ALPS ADVISORS INC | New | 0 | 65.7K | +65.7K |
| XTX Topco Ltd | New | 0 | 64.4K | +64.4K |
| CITADEL ADVISORS LLC | Reduced | 447.3K | 386.4K | -60.9K |
| BRANDYWINE MANAGERS, LLC | New | 0 | 55.1K | +55.1K |
| ALLIANCEBERNSTEIN L.P. | New | 0 | 52.7K | +52.7K |
| DEUTSCHE BANK AG\ | New | 0 | 52.3K | +52.3K |
| TWO SIGMA INVESTMENTS, LP | Increased | 244.8K | 288.4K | +43.6K |
| HRT FINANCIAL LP | Sold Out | 42.5K | 0 | -42.5K |
| WEALTH EFFECTS LLC | New | 0 | 40.1K | +40.1K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 322.0K | 360.8K | +38.7K |
| HSBC HOLDINGS PLC | Sold Out | 37.8K | 0 | -37.8K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 105.5K | 69.1K | -36.5K |
| BANK OF AMERICA CORP /DE/ | Reduced | 150.8K | 115.8K | -35.0K |
| MetLife Investment Management, LLC | New | 0 | 33.5K | +33.5K |
| Invesco Ltd. | New | 0 | 31.2K | +31.2K |
| WELLS FARGO & COMPANY/MN | Increased | 16.8K | 46.7K | +29.9K |
| PRELUDE CAPITAL MANAGEMENT, LLC | Sold Out | 29.2K | 0 | -29.2K |
| TD Asset Management Inc | Reduced | 94.3K | 65.2K | -29.1K |
| JPMORGAN CHASE & CO | Increased | 6.4K | 32.5K | +26.1K |
| AMERICAN CENTURY COMPANIES INC | Increased | 34.2K | 59.6K | +25.3K |
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.