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Assembly Biosciences
ASMB

33 hedge funds and large institutions have $57M invested in Assembly Biosciences in 2025 Q2 according to their latest regulatory filings, with 5 funds opening new positions, 7 increasing their positions, 8 reducing their positions, and 9 closing their positions.

New
Increased
Maintained
Reduced
Closed

88% more capital invested

Capital invested by funds: $30.4M → $57M (+$26.7M)

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

1.12% less ownership

Funds ownership: 42.34% → 41.22% (-1.1%)

11% less funds holding

Funds holding: 37 → 33 (-4)

13% less repeat investments, than reductions

Existing positions increased: 7 | Existing positions reduced: 8

44% less first-time investments, than exits

New positions opened: 5 | Existing positions closed: 9

Holders
33
Holders Change
-4
Holders Change %
-10.81%
% of All Funds
0.43%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
5
Increased
7
Reduced
8
Closed
9
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Vanguard Group
Vanguard Group
Pennsylvania
+$499K
2
Citadel Advisors
Citadel Advisors
Florida
+$310K
3
GCP
GSA Capital Partners
United Kingdom
+$196K
4
BlackRock
BlackRock
New York
+$141K
5
LCM
Lynx1 Capital Management
Puerto Rico
+$137K

Top Sellers

Rank Fund Capital Flow
1
AC
Armistice Capital
New York
-$228K
2
Squarepoint
Squarepoint
New York
-$181K
3
Marshall Wace
Marshall Wace
United Kingdom
-$172K
4
Susquehanna International Group
Susquehanna International Group
Pennsylvania
-$166K
5
BGI
B Group Inc
Texas
-$140K
Name Holding Trade Value Shares
Change 		Change in
Stake
Wells Fargo
26
Wells Fargo
California
$2.63K – – –
AG
27
AmeriFlex Group
Nevada
$1.42K – – –
SS
28
SBI Securities
Japan
$1.21K – – –
Royal Bank of Canada
29
Royal Bank of Canada
Ontario, Canada
$1K +$699 +53 New
EWA
30
EverSource Wealth Advisors
Alabama
$997 – – –
Bank of America
31
Bank of America
North Carolina
$942 +$171 +13 +33%
CIAM
32
Caitong International Asset Management
Hong Kong
$616 +$449 +34 New
JP Morgan Chase
33
JP Morgan Chase
New York
$127 – – –
AC
34
Armistice Capital
New York
– -$228K -23,858 Closed
Squarepoint
35
Squarepoint
New York
– -$181K -18,982 Closed
Marshall Wace
36
Marshall Wace
United Kingdom
– -$172K -18,040 Closed
Susquehanna International Group
37
Susquehanna International Group
Pennsylvania
– -$166K -17,414 Closed
American Century Companies
38
American Century Companies
Missouri
– -$113K -11,799 Closed
Connor, Clark & Lunn Investment Management (CC&L)
39
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
– -$97.3K -10,182 Closed
Fidelity Investments
40
Fidelity Investments
Massachusetts
– -$54.1K -5,659 Closed
FFA
41
Frazier Financial Advisors
Ohio
– -$10 -1 Closed
1
2

ASMB Hedge Fund Activity: Q2 2025 in Review

33 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Assembly Biosciences (ASMB) for Q2 2025, worth a combined $57M — up 88% from $30.4M a quarter earlier.

Sellers outnumbered buyers: 9 funds closed out of ASMB and 5 opened new positions — a net loss of 4 holders — while 8 trimmed existing stakes and 7 added.

The largest buyer was Vanguard Group, adding an estimated $499K. The largest seller was Armistice Capital, exiting entirely with an estimated $228K sold.

  • 33 institutional investors held Assembly Biosciences (ASMB) as of Q2 2025, down from 37 in Q1 2025.
  • Funds reported $57M of Assembly Biosciences stock for Q2 2025, up 88% quarter-over-quarter.
  • 5 funds opened new Assembly Biosciences positions in Q2 2025 and 9 closed out, a net change of -4 holders.
  • The largest Assembly Biosciences buyer in Q2 2025 was Vanguard Group, an estimated $499K added.
  • The largest Assembly Biosciences seller in Q2 2025 was Armistice Capital, an estimated $228K sold.

Based on aggregated 13F filings for Q2 2025.