IMMUNEERING CORP - CLASS A (IMRX) Top Institutional Shareholders
IMMUNEERING CORP - CLASS A (IMRX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $129.26M in IMRX holdings during the latest filing period.
Fmr Llc is currently the largest disclosed institutional shareholder of IMRX tracked by InsiderSet, reporting ownership valued at approximately $51.11M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $42.77M, representing an estimated loss of -16.32% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 79% of the total disclosed IMRX value among the investors covered in this analysis. Major shareholders include Fmr Llc, Sanofi, Marshall Wace, Llp, and several other long-term asset managers with concentrated positions in IMMUNEERING CORP - CLASS A (IMRX).
This page ranks the largest institutional IMRX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
90
Total Reported Value
$129.26M
Largest Holder
Fmr Llc
Largest Position
$51.11M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
109
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Fmr Llc | 0.00% | 9,697,938 | $51,108,133 | $42,767,907 | -$8,340,226 | -16.32% | |
| Sanofi | 4.25% | 2,708,559 | $14,274,106 | $11,944,745 | -$2,329,361 | -16.32% | |
| Marshall Wace, Llp | 0.01% | 1,996,585 | $10,522,002 | $8,804,940 | -$1,717,062 | -16.32% | |
| Blackrock, Inc. | 0.00% | 1,507,258 | $7,943,249 | $6,647,008 | -$1,296,241 | -16.32% | |
| Millennium Management Llc | 0.00% | 1,102,712 | $5,811,292 | $4,862,960 | -$948,332 | -16.32% | |
| Geode Capital Management, Llc | 0.00% | 637,944 | $3,363,708 | $2,813,333 | -$550,375 | -16.36% | |
| Occam Crest Management Lp | 1.79% | 545,098 | $2,872,666 | $2,403,882 | -$468,784 | -16.32% | |
| Citadel Advisors Llc | 0.00% | 447,278 | $2,357,155 | $1,972,496 | -$384,659 | -16.32% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 400,363 | $2,109,913 | $1,765,601 | -$344,312 | -16.32% | |
| Summit Financial, Llc | 0.03% | 376,749 | $1,985,467 | $1,661,463 | -$324,004 | -16.32% | |
| Ubs Group Ag | 0.00% | 376,284 | $1,983,017 | $1,659,412 | -$323,605 | -16.32% | |
| Goldman Sachs Group Inc | 0.00% | 327,655 | $1,726,742 | $1,444,959 | -$281,783 | -16.32% | |
| Burkehill Global Management, Lp | 0.08% | 300,000 | $1,581,000 | $1,323,000 | -$258,000 | -16.32% | |
| Morgan Stanley | 0.00% | 296,067 | $1,560,273 | $1,305,655 | -$254,618 | -16.32% | |
| State Street Corp | 0.00% | 268,520 | $1,415,100 | $1,184,173 | -$230,927 | -16.32% | |
| Two Sigma Investments, Lp | 0.00% | 244,771 | $1,289,943 | $1,079,440 | -$210,503 | -16.32% | |
| Squarepoint Ops Llc | 0.00% | 226,046 | $1,191,262 | $996,863 | -$194,399 | -16.32% | |
| Diametric Capital, Lp | 0.24% | 174,897 | $921,707 | $771,296 | -$150,411 | -16.32% | |
| Wellington Management Group Llp | 0.00% | 156,424 | $824,355 | $689,830 | -$134,525 | -16.32% | |
| Bank Of America Corp | 0.00% | 150,847 | $794,963 | $665,235 | -$129,728 | -16.32% | |
| 683 Capital Management, Llc | 0.07% | 150,697 | $794,173 | $664,574 | -$129,599 | -16.32% | |
| Dcf Advisers, Llc | 0.28% | 141,462 | $745,505 | $623,847 | -$121,658 | -16.32% | |
| Hightower Advisors, Llc | 0.00% | 131,286 | $691,877 | $578,971 | -$112,906 | -16.32% | |
| Prosight Management, Lp | 0.11% | 123,409 | $650,365 | $544,234 | -$106,131 | -16.32% | |
| Kingsview Wealth Management, Llc | 0.01% | 122,200 | $643,994 | $538,902 | -$105,092 | -16.32% | |
| Barclays Plc | 0.00% | 121,978 | $642,825 | $537,923 | -$104,902 | -16.32% | |
| Bridgeway Capital Management, Llc | 0.01% | 118,149 | $622,645 | $521,037 | -$101,608 | -16.32% | |
| Northern Trust Corp | 0.00% | 117,666 | $620,100 | $518,907 | -$101,193 | -16.32% | |
| Susquehanna International Group, Llp | 0.00% | 105,507 | $556,022 | $465,286 | -$90,736 | -16.32% | |
| Hudson Bay Capital Management Lp | 0.00% | 95,889 | $505,335 | $422,870 | -$82,465 | -16.32% | |
| Td Asset Management Inc | 0.00% | 94,340 | $497,172 | $416,039 | -$81,133 | -16.32% | |
| Weiss Asset Management Lp | 0.01% | 87,985 | $463,681 | $388,014 | -$75,667 | -16.32% | |
| Brevan Howard Capital Management Lp | 0.00% | 86,236 | $454,463 | $380,301 | -$74,162 | -16.32% | |
| Jane Street Group, Llc | 0.00% | 77,414 | $407,971 | $341,396 | -$66,575 | -16.32% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 72,875 | $384,051 | $321,379 | -$62,672 | -16.32% |
| Manufacturers Life Insurance Company, The | 0.00% | 69,738 | $367,519 | $307,545 | -$59,974 | -16.32% | |
| Landscape Capital Management, L.L.C. | 0.02% | 67,495 | $355,699 | $297,653 | -$58,046 | -16.32% | |
| Clearstead Advisors, Llc | 0.00% | 60,865 | $320,759 | $268,415 | -$52,344 | -16.32% | |
| Flower City Capital | 0.15% | 55,029 | $290,003 | $242,678 | -$47,325 | -16.32% | |
| Citigroup Inc | 0.00% | 40,417 | $212,998 | $178,239 | -$34,759 | -16.32% | |
| Hsbc Holdings Plc | 0.00% | 37,771 | $197,542 | $166,570 | -$30,972 | -15.68% | |
| Charles Schwab Investment Management Inc | 0.00% | 37,344 | $196,803 | $164,687 | -$32,116 | -16.32% | |
| American Century Companies Inc | 0.00% | 34,224 | $180,360 | $150,928 | -$29,432 | -16.32% | |
| Oppenheimer & Co Inc | 0.00% | 34,000 | $179,180 | $149,940 | -$29,240 | -16.32% | |
| Prelude Capital Management, Llc | 0.01% | 29,219 | $153,984 | $128,856 | -$25,128 | -16.32% | |
| Berman Mcaleer Llc | 0.02% | 25,000 | $131,750 | $110,250 | -$21,500 | -16.32% | |
| Lpl Financial Llc | 0.00% | 24,345 | $128,298 | $107,361 | -$20,937 | -16.32% | |
| First Manhattan Co. Llc. | 0.00% | 24,245 | $127,771 | $106,920 | -$20,851 | -16.32% | |
| Cibc Bancorp Usa Inc. | 0.00% | 23,500 | $123,845 | $103,635 | -$20,210 | -16.32% | |
| Alethea Capital Management, Llc | 0.06% | 22,935 | $120,867 | $101,143 | -$19,724 | -16.32% |
Frequently asked questions about IMRX
Who owns the most IMRX stock?
The largest holders of IMRX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for IMMUNEERING CORP - CLASS A (IMRX).
Is IMRX widely held by superinvestors?
Many widely followed stocks like IMRX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly IMRX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.