Assembly Biosciences
ASMB
34 hedge funds and large institutions have $57.1M 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.
2% more capital inflows, than outflows
Capital inflows: $1.37M | Capital outflows: $1.34M
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: 38 → 34 (-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
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Group
Malvern,
Pennsylvania
|
+$499K |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$310K |
| 3 |
GSA Capital Partners
London,
United Kingdom
|
+$196K |
| 4 |
BlackRock
New York
|
+$141K |
| 5 |
LCM
Lynx1 Capital Management
San Juan,
Puerto Rico
|
+$137K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Armistice Capital
New York
|
-$228K |
| 2 |
Squarepoint
New York
|
-$181K |
| 3 |
Marshall Wace
London,
United Kingdom
|
-$172K |
| 4 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$166K |
| 5 |
BGI
B Group Inc
Dallas,
Texas
|
-$140K |
ASMB Hedge Fund Activity: Q2 2025 in Review
34 of the 7,624 institutional investors tracked by Wall St. Rank reported a position in Assembly Biosciences (ASMB) for Q2 2025, worth a combined $57.1M — 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.
- 34 institutional investors held Assembly Biosciences (ASMB) as of Q2 2025, down from 38 in Q1 2025.
- Funds reported $57.1M 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.