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Immuneering
IMRX

68 hedge funds and large institutions have $182M invested in Immuneering in 2025 Q3 according to their latest regulatory filings, with 33 funds opening new positions, 23 increasing their positions, 7 reducing their positions, and 4 closing their positions.

New
Increased
Maintained
Reduced
Closed

1,312% more capital invested

Capital invested by funds: $12.9M → $182M (+$169M)

725% more first-time investments, than exits

New positions opened: 33 | Existing positions closed: 4

229% more repeat investments, than reductions

Existing positions increased: 23 | Existing positions reduced: 7

100% more funds holding in top 10

Funds holding in top 10: 1 → 2 (+1)

74% more funds holding

Funds holding: 39 → 68 (+29)

52% more ownership

Funds ownership: 10.64% → 62.65% (+52%)

Holders
68
Holders Change
+29
Holders Change %
+74.36%
% of All Funds
0.89%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
33
Increased
23
Reduced
7
Closed
4
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Fidelity Investments
Fidelity Investments
Massachusetts
+$44.5M
2
S
Sanofi
France
+$14.1M
3
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$9.34M
4
ECM
ExodusPoint Capital Management
New York
+$7.87M
5
Vanguard Group
Vanguard Group
Pennsylvania
+$7.05M

Top Sellers

Rank Fund Capital Flow
1
Marshall Wace
Marshall Wace
United Kingdom
-$1.57M
2
Corient Private Wealth
Corient Private Wealth
Florida
-$143K
3
CSS
Cubist Systematic Strategies
Connecticut
-$99.1K
4
First Manhattan
First Manhattan
New York
-$41.9K
5
HighTower Advisors
HighTower Advisors
Illinois
-$18.2K
Name Holding Trade Value Shares
Change 		Change in
Stake
BCM
26
Bridgeway Capital Management
Texas
$843K +$130K +25,000 +26%
Two Sigma Investments
27
Two Sigma Investments
New York
$755K +$464K +89,318 +481%
Hudson Bay Capital Management
28
Hudson Bay Capital Management
Connecticut
$717K +$532K +102,448 New
Northern Trust
29
Northern Trust
Illinois
$644K +$271K +52,311 +132%
APM
30
Avidity Partners Management
Texas
$636K +$472K +90,900 New
KWM
31
Kingsview Wealth Management
Oregon
$630K +$394K +76,000 +543%
PCM
32
Prelude Capital Management
New York
$507K +$376K +72,467 New
Royal Bank of Canada
33
Royal Bank of Canada
Ontario, Canada
$497K +$260K +50,040 +239%
Manulife (Manufacturers Life Insurance)
34
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$485K +$360K +69,274 New
XT
35
XTX Topco
Cayman Islands
$448K +$193K +37,211 +139%
CIBC Private Wealth Group
36
CIBC Private Wealth Group
Georgia
$350K +$182K +35,051 +234%
PWM
37
Palumbo Wealth Management
New York
$343K +$255K +49,052 New
Ameriprise
38
Ameriprise
Minnesota
$331K +$245K +47,299 New
T
39
Tidemark
California
$311K – – –
Bank of America
40
Bank of America
North Carolina
$306K +$79.2K +15,262 +54%
GCP
41
GSA Capital Partners
United Kingdom
$265K +$196K +37,836 New
Corient Private Wealth
42
Corient Private Wealth
Florida
$253K -$143K -27,650 -43%
Renaissance Technologies
43
Renaissance Technologies
New York
$245K +$87.2K +16,800 +92%
FCC
44
Flower City Capital
New York
$205K -$14.5K -2,800 -9%
BM
45
Berman McAleer
Maryland
$175K +$130K +25,000 New
First Manhattan
46
First Manhattan
New York
$170K -$41.9K -8,080 -25%
QC
47
Quadrature Capital
United Kingdom
$166K +$123K +23,785 New
ACM
48
Alethea Capital Management
Washington
$161K – – –
LPL Financial
49
LPL Financial
California
$157K +$116K +22,400 New
Charles Schwab
50
Charles Schwab
California
$156K +$53.7K +10,344 +86%
1
2
3

IMRX Hedge Fund Activity: Q3 2025 in Review

68 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in Immuneering (IMRX) for Q3 2025, worth a combined $182M — up 1,312% from $12.9M a quarter earlier.

Buyers outnumbered sellers: 33 funds opened new IMRX positions and 4 closed out — a net gain of 29 holders — while 23 added to existing stakes and 7 trimmed.

The largest buyer was Fidelity Investments, adding an estimated $44.5M. The largest seller was Marshall Wace, cutting an estimated $1.57M.

  • 68 institutional investors held Immuneering (IMRX) as of Q3 2025, up from 39 in Q2 2025.
  • Funds reported $182M of Immuneering stock for Q3 2025, up 1,312% quarter-over-quarter.
  • 33 funds opened new Immuneering positions in Q3 2025 and 4 closed out, a net change of +29 holders.
  • The largest Immuneering buyer in Q3 2025 was Fidelity Investments, an estimated $44.5M added.
  • The largest Immuneering seller in Q3 2025 was Marshall Wace, an estimated $1.57M sold.

Based on aggregated 13F filings for Q3 2025.