Immuneering Corp. Class AIMRX
13F holders, Q3 2025 (September 30)68holders +29
31new positions
4sold out
3famous investors
$7.00avg. 13F price*
At the end of Q3 2025, 68 institutions reported holding Immuneering Corp. Class A (IMRX) in their 13F filings, up 29 from Q2 2025. 31 opened new positions and 4 sold out. The largest holders were FMR LLC ($61.5M), Sanofi ($19.0M) and Vanguard Group Inc. ($16.9M). 3 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Immuneering Corp. Class A
- CUSIP
- 45254E107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 31 | $74.7M |
| Exits | 4 | $109K |
All 13F filers, Q2 2025 → Q3 2025: 22,066,391 shares bought and 377,568 shares sold, net +21,688,823 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 68 holders
| FMR LLC | 0.00% | Add +3876.0% | 8,787,052 | $61.5M |
| Sanofi | 7.28% | New | 2,708,559 | $19.0M |
| Vanguard Group Inc. | 0.00% | Add +128.5% | 2,415,244 | $16.9M |
| T. Rowe Price Associates Inc. | 0.00% | New | 1,798,782 | $12.6M |
| ExodusPoint Capital Management, LP | 0.15% | New | 1,516,833 | $10.6M |
| Logos Global Management LP | 0.66% | New | 950,000 | $6.7M |
| Citadel Advisors | 0.01% | New | 943,144 | $6.6M |
| BlackRock, Inc. | 0.00% | Add +61.1% | 681,185 | $4.8M |
| Blue Owl Capital Holdings LP | 1.20% | New | 550,000 | $3.9M |
| Geode Capital Management, LLC | 0.00% | Add +123.1% | 513,665 | $3.6M |
| Occam Crest Management LP | 2.37% | — | 498,498 | $3.5M |
| Monashee Investment Management LLC | 1.08% | New | 300,000 | $2.1M |
| Burkehill Global Management, LP | 0.12% | New | 300,000 | $2.1M |
| Morgan Stanley | 0.00% | Add +46.6% | 294,857 | $2.1M |
| Iridian Asset Management LLC | 0.76% | New | 275,086 | $1.9M |
| Southport Management, L.L.C. | 7.87% | Add +11.2% | 272,501 | $1.9M |
| Marshall Wace, LLP | 0.00% | Reduce -52.7% | 271,304 | $1.9M |
| Diametric Capital, LP | 0.66% | New | 252,193 | $1.8M |
| Millennium Management | 0.00% | Add +280.4% | 236,781 | $1.7M |
| State Street Corp. | 0.00% | Add +77.6% | 172,864 | $1.2M |
| AWM Investment Company, Inc. | 0.10% | New | 150,000 | $1.1M |
| Woodline Partners LP | 0.00% | New | 150,000 | $1.1M |
| TD Asset Management Inc | 0.00% | New | 145,180 | $1.0M |
| HighTower Advisors, LLC | 0.00% | Reduce -2.6% | 132,459 | $927K |
| UBS Group AG | 0.00% | Add +2391.7% | 126,402 | $885K |
| Bridgeway Capital Management, LLC | 0.02% | Add +26.2% | 120,449 | $843K |
| Two Sigma Investments, LP | 0.00% | Add +481.4% | 107,871 | $755K |
| Hudson Bay Capital Management LP | 0.01% | New | 102,448 | $717K |
| Northern Trust Corp. | 0.00% | Add +131.7% | 92,040 | $644K |
| Avidity Partners Management LP | 0.14% | New | 90,900 | $636K |
| Kingsview Wealth Management, LLC | 0.01% | Add +542.9% | 90,000 | $630K |
| Prelude Capital Management, LLC | 0.04% | New | 72,467 | $507K |
| Royal Bank of Canada | 0.00% | Add +238.7% | 71,000 | $497K |
| Manufacturers Life Insurance Company, The | 0.00% | New | 69,274 | $485K |
| XTX Topco Ltd | 0.02% | Add +138.7% | 64,040 | $448K |
| CIBC Private Wealth Group LLC | 0.00% | Add +233.7% | 50,051 | $350K |
| Palumbo Wealth Management LLC | 0.11% | New | 49,052 | $343K |
| Ameriprise Financial Inc. | 0.00% | New | 47,299 | $331K |
| Tidemark, LLC | 0.09% | No change | 44,400 | $311K |
| Bank of America Corp. | 0.00% | Add +53.6% | 43,754 | $306K |
| Gsa Capital Partners LLP | 0.02% | New | 37,836 | $265K |
| Corient Private Wealth LP | 0.00% | Reduce -43.4% | 36,090 | $253K |
| Renaissance Technologies | 0.00% | Add +92.3% | 35,000 | $245K |
| Flower City Capital | 0.11% | Reduce -8.7% | 29,229 | $205K |
| Berman McAleer LLC | 0.02% | — | 25,000 | $175K |
| First Manhattan Co. Llc. | 0.00% | Reduce -25.0% | 24,245 | $170K |
| Quadrature Capital Ltd | 0.00% | New | 23,785 | $166K |
| Alethea Capital Management, LLC | 0.10% | No change | 22,935 | $161K |
| LPL Financial LLC | 0.00% | New | 22,400 | $157K |
| Charles Schwab Investment Management Inc. | 0.00% | Add +86.2% | 22,344 | $156K |
| Barclays PLC | 0.00% | Add +122.9% | 22,118 | $155K |
| Vontobel Holding Ltd. | 0.00% | New | 21,500 | $150K |
| Heights Capital Management, Inc. | 0.05% | New | 20,000 | $140K |
| Resonant Capital Advisors, LLC | 0.01% | New | 20,000 | $140K |
| PNC Financial Services Group, Inc. | 0.00% | No change | 20,000 | $140K |
| Dimensional Fund Advisors LP | 0.00% | Add +46.4% | 19,562 | $137K |
| Wendell David Associates Inc. | 0.01% | New | 15,000 | $105K |
| Wells Fargo & Company | 0.00% | Add +50.0% | 15,000 | $105K |
| Virtu Financial LLC | 0.01% | New | 13,994 | $98K |
| Moors & Cabot, Inc. | 0.00% | New | 11,000 | $77K |
| Mercer Global Advisors Inc. | 0.00% | New | 10,000 | $70K |
| Future Financial Wealth Managment LLC | 0.02% | New | 5,000 | $35K |
| China Universal Asset Management Co., Ltd. | 0.00% | New | 5,000 | $35K |
| Osaic Holdings, Inc. | 0.00% | No change | 4,300 | $30K |
| JPMorgan Chase & Co. | 0.00% | Reduce -24.0% | 1,500 | $11K |
| Citigroup Inc. | 0.00% | No change | 796 | $6K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +25.2% | 432 | $3K |
| BNP Paribas Financial Markets | 0.00% | Reduce -8.7% | 262 | $2K |
"% of holder's portfolio" is IMRX's weight in each manager's 13F, not the share of Immuneering Corp. Class A the manager owns.