Immuneering Corp. Class AIMRX
13F holders, Q1 2026 (March 31)95holders +10
26new positions
16sold out
3famous investors
$5.26avg. 13F price*
At the end of Q1 2026, 95 institutions reported holding Immuneering Corp. Class A (IMRX) in their 13F filings, up 10 from Q4 2025. 26 opened new positions and 16 sold out. The largest holders were FMR LLC ($51.1M), Sanofi ($14.3M) and Vanguard Capital Management LLC ($12.1M). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors'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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 26 | $7.2M |
| Exits | 16 | $26.3M |
All 13F filers, Q4 2025 → Q1 2026: 4,946,281 shares bought and 7,103,792 shares sold, net −2,157,511 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 95 holders
| FMR LLC | 0.00% | Add +0.1% | 9,697,938 | $51.1M |
| Sanofi | 4.25% | No change | 2,708,559 | $14.3M |
| Vanguard Capital Management LLC | 0.00% | — | 2,288,341 | $12.1M |
| Marshall Wace, LLP | 0.01% | Add +180.5% | 1,996,585 | $10.5M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -8.3% | 1,829,188 | $9.6M |
| BlackRock, Inc. | 0.00% | Add +3.8% | 1,507,258 | $7.9M |
| Millennium Management | 0.00% | Add +2065.4% | 1,102,712 | $5.8M |
| Geode Capital Management, LLC | 0.00% | Add +3.2% | 637,944 | $3.4M |
| Occam Crest Management LP | 1.82% | Add +9.3% | 545,098 | $2.9M |
| Citadel Advisors | 0.00% | Add +394.4% | 447,278 | $2.4M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +201.8% | 400,363 | $2.1M |
| Summit Financial, LLC | 0.03% | New | 376,749 | $2.0M |
| UBS Group AG | 0.00% | Add +97.7% | 376,284 | $2.0M |
| Goldman Sachs Group Inc. | 0.00% | Add +2.8% | 327,655 | $1.7M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 322,038 | $1.7M |
| Burkehill Global Management, LP | 0.08% | No change | 300,000 | $1.6M |
| Morgan Stanley | 0.00% | Reduce -39.5% | 296,067 | $1.6M |
| State Street Corp. | 0.00% | Reduce -88.8% | 268,520 | $1.4M |
| Two Sigma Investments, LP | 0.00% | Add +18.2% | 244,771 | $1.3M |
| Squarepoint Ops LLC | 0.00% | Add +145.0% | 226,046 | $1.2M |
| Diametric Capital, LP | 0.24% | Reduce -29.1% | 174,897 | $922K |
| Wellington Management Group LLP | 0.00% | New | 156,424 | $824K |
| Bank of America Corp. | 0.00% | Reduce -29.6% | 150,847 | $795K |
| 683 Capital Management, LLC | 0.08% | No change | 150,697 | $794K |
| DCF Advisers, LLC | 0.28% | Reduce -34.2% | 141,462 | $746K |
| HighTower Advisors, LLC | 0.00% | Add +17.9% | 131,286 | $692K |
| Prosight Management, LP | 0.11% | New | 123,409 | $650K |
| Kingsview Wealth Management, LLC | 0.01% | Add +3.0% | 122,200 | $644K |
| Barclays PLC | 0.00% | Reduce -47.1% | 121,978 | $643K |
| Bridgeway Capital Management, LLC | 0.01% | Reduce -1.9% | 118,149 | $623K |
| Northern Trust Corp. | 0.00% | Add +7.9% | 117,666 | $620K |
| PVG Asset Management Corp. | 0.36% | New | 146,661 | $615K |
| Susquehanna International Group, LLP | 0.00% | Reduce -1.8% | 105,507 | $556K |
| Hudson Bay Capital Management LP | 0.00% | Add +12.8% | 95,889 | $505K |
| TD Asset Management Inc | 0.00% | Reduce -19.9% | 94,340 | $497K |
| Weiss Asset Management LP | 0.01% | New | 87,985 | $464K |
| Brevan Howard Capital Management LP | 0.00% | New | 86,236 | $454K |
| Jane Street Group, LLC | 0.00% | Reduce -24.1% | 77,414 | $408K |
| Gsa Capital Partners LLP | 0.03% | New | 76,752 | $404K |
| Renaissance Technologies | 0.00% | Reduce -52.1% | 72,875 | $384K |
| Manufacturers Life Insurance Company, The | 0.00% | No change | 69,738 | $368K |
| Landscape Capital Management, L.L.C. | 0.02% | Reduce -18.0% | 67,495 | $356K |
| Clearstead Advisors, LLC | 0.00% | New | 60,865 | $321K |
| Flower City Capital | 0.15% | Add +30.3% | 55,029 | $290K |
| HRT Financial LP | 0.00% | New | 42,456 | $223K |
| Citigroup Inc. | 0.00% | Add +7.7% | 40,417 | $213K |
| HSBC Holdings PLC | 0.00% | New | 37,771 | $198K |
| Charles Schwab Investment Management Inc. | 0.00% | Add +67.1% | 37,344 | $197K |
| American Century Companies Inc. | 0.00% | New | 34,224 | $180K |
| Oppenheimer & Co. Inc. | 0.00% | New | 34,000 | $179K |
| Prelude Capital Management, LLC | 0.01% | Reduce -63.5% | 29,219 | $154K |
| Berman McAleer LLC | 0.02% | No change | 25,000 | $132K |
| LPL Financial LLC | 0.00% | Reduce -16.4% | 24,345 | $128K |
| First Manhattan Co. Llc. | 0.00% | No change | 24,245 | $128K |
| Vanguard Global Advisers, LLC | 0.00% | — | 24,243 | $128K |
| CIBC Bancorp USA Inc. | 0.00% | — | 23,500 | $124K |
| Alethea Capital Management, LLC | 0.06% | No change | 22,935 | $121K |
| OMERS ADMINISTRATION Corp | 0.00% | Reduce -53.1% | 22,400 | $118K |
| Envestnet Asset Management Inc. | 0.00% | New | 21,863 | $115K |
| Great Valley Advisor Group, Inc. | 0.00% | Add +11.2% | 21,120 | $112K |
| PNC Financial Services Group, Inc. | 0.00% | No change | 20,000 | $105K |
| FNY Investment Advisers, LLC | 0.05% | New | 20,000 | $105K |
| Future Financial Wealth Managment LLC | 0.07% | No change | 18,000 | $104K |
| Dimensional Fund Advisors LP | 0.00% | No change | 19,562 | $103K |
| Palumbo Wealth Management LLC | 0.02% | Reduce -70.5% | 18,670 | $98K |
| Nations Financial Group Inc, /Ia/ | 0.00% | Add +6.3% | 17,000 | $90K |
| Wells Fargo & Company | 0.00% | Add +12.0% | 16,800 | $89K |
| Schonfeld Strategic Advisors LLC | 0.00% | New | 15,900 | $84K |
| Kelsey Financial, LLC | 0.07% | Add +7.1% | 15,099 | $80K |
| Wendell David Associates Inc. | 0.01% | No change | 15,000 | $79K |
| Y-Intercept (Hong Kong) Ltd | 0.00% | New | 14,280 | $75K |
| Catalyst Funds Management Pty Ltd | 0.01% | New | 12,800 | $67K |
| Cetera Investment Advisers | 0.00% | New | 12,649 | $67K |
| Jump Financial, LLC | 0.00% | New | 12,250 | $65K |
| China Universal Asset Management Co., Ltd. | 0.00% | Reduce -26.2% | 11,458 | $60K |
| Ausdal Financial Partners, Inc. | 0.00% | No change | 11,000 | $58K |
| Atria Investments, Inc | 0.00% | New | 10,758 | $57K |
| Thayer Partners, LLC / MA | 0.03% | No change | 11,000 | $54K |
| Tidemark, LLC | 0.01% | Reduce -50.0% | 10,000 | $53K |
| Levin Capital Strategies, L.P. | 0.00% | New | 10,000 | $53K |
| Moors & Cabot, Inc. | 0.00% | No change | 10,000 | $53K |
| Simplex Trading, LLC | 0.00% | Reduce -30.9% | 8,942 | $47K |
| JPMorgan Chase & Co. | 0.00% | Reduce -5.1% | 6,419 | $31K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +4627.1% | 5,058 | $27K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +7.3% | 3,368 | $18K |
| Group One Trading LLC | 0.00% | New | 3,029 | $16K |
| BNP Paribas Financial Markets | 0.00% | Add +1.6% | 2,276 | $12K |
| Quantbot Technologies LP | 0.00% | New | 1,632 | $9K |
| GF Fund Management Co. LTD. | 0.00% | Add +13.7% | 1,442 | $8K |
| Natixis | 0.00% | New | 380 | $2K |
| EverSource Wealth Advisors, LLC | 0.00% | No change | 345 | $2K |
| Royal Bank of Canada | 0.00% | New | 360 | $1K |
| Fortitude Family Office, LLC | 0.00% | New | 105 | $553 |
| Jones Financial Companies LLLP | 0.00% | No change | 30 | $149 |
| Osaic Holdings, Inc. | 0.00% | Reduce -99.9% | 4 | $21 |
"% of holder's portfolio" is IMRX's weight in each manager's 13F, not the share of Immuneering Corp. Class A the manager owns.