Immuneering Corp
IMRX- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001790340
No open-market purchases or sales by Immuneering Corp insiders were filed in the last 90 days; 111 institutions reported holding it in 13F filings for Q2 2026, worth $171.6M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Immuneering Corp as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 96
- +14 vs. Q4 2025
- Shares held
- 29.3M
- +478.0K (+1.7%) vs. Q4 2025
- Total value
- $154.3M
- −$35.4M (−18.7%) vs. Q4 2025
- New holders
- 30
- 28 more added
- Sold out
- 16
- 22 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IMRX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 111 | $171.6M |
| Q1 2026 | 96 | $154.3M |
| Q4 2025 | 85 | $208.6M |
| Q3 2025 | 69 | $183.3M |
| Q2 2025 | 39 | $12.9M |
| Q1 2025 | 35 | $6.84M |
| Q4 2024 | 42 | $9.32M |
| Q3 2024 | 38 | $10.9M |
| Q2 2024 | 59 | $12.3M |
| Q1 2024 | 51 | $34.3M |
| Q4 2023 | 52 | $118.6M |
| Q3 2023 | 52 | $130.1M |
| Q2 2023 | 49 | $175.9M |
| Q1 2023 | 35 | $114.9M |
| Q4 2022 | 34 | $56.9M |
| Q3 2022 | 32 | $172.5M |
| Q2 2022 | 37 | $65.7M |
| Q1 2022 | 50 | $88.1M |
| Q4 2021 | 37 | $200.1M |
| Q3 2021 | 38 | $316.4M |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Immuneering Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −130,742−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −51,773−100.0% | Sold out |
| Profund Advisors LLC | 0 | $0 | 0.00% | −47,135−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −31,800−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −31,237−100.0% | Sold out |
| Resonant Capital Advisors, LLC | 0 | $0 | 0.00% | −20,000−100.0% | Sold out |
| Lighthouse Investment Partners, LLC | 0 | $0 | 0.00% | −17,760−100.0% | Sold out |
| SummitTX Capital, L.P. | 0 | $0 | 0.00% | −10,469−100.0% | Sold out |
| Mercer Global Advisors Inc | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Vontobel Holding Ltd. | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Mirae Asset Global ETFs Holdings Ltd. | 0 | $0 | 0.00% | −7,627−100.0% | Sold out |
| Flagship Harbor Advisors, LLC | 0 | $0 | 0.00% | −1,500−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Southport Management, L.L.C. | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |