HOOKIPA Pharma
HOOK
HOOK was delisted on the 7th of August, 2025.
32 hedge funds and large institutions have $5.3M invested in HOOKIPA Pharma in 2025 Q1 according to their latest regulatory filings, with 4 funds opening new positions, 9 increasing their positions, 6 reducing their positions, and 10 closing their positions.
67% more call options, than puts
Call options by funds: $5K | Put options by funds: $3K
50% more repeat investments, than reductions
Existing positions increased: 9 | Existing positions reduced: 6
4.56% less ownership
Funds ownership: 55.35% → 50.79% (-4.6%)
16% less funds holding
Funds holding: 38 → 32 (-6)
51% less capital invested
Capital invested by funds: $10.7M → $5.3M (-$5.45M)
60% less first-time investments, than exits
New positions opened: 4 | Existing positions closed: 10
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Group
Malvern,
Pennsylvania
|
+$144K |
| 2 |
UBS Group
Zurich,
Switzerland
|
+$36.6K |
| 3 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$31.7K |
| 4 |
Prudential Financial
Newark,
New Jersey
|
+$28.7K |
| 5 |
XT
XTX Topco
George Town,
Cayman Islands
|
+$26.7K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
EC
EcoR1 Capital
San Francisco,
California
|
-$782K |
| 2 |
RG
Redmile Group
San Francisco,
California
|
-$214K |
| 3 |
EGM
Engineers Gate Manager
New York
|
-$47.7K |
| 4 |
Citadel Advisors
Miami,
Florida
|
-$36.8K |
| 5 |
Dimensional Fund Advisors
Austin,
Texas
|
-$33.3K |
HOOK Hedge Fund Activity: Q1 2025 in Review
32 of the 7,458 institutional investors tracked by Wall St. Rank reported a position in HOOKIPA Pharma (HOOK) for Q1 2025, worth a combined $5.3M — down 51% from $10.7M a quarter earlier.
Sellers outnumbered buyers: 10 funds closed out of HOOK and 4 opened new positions — a net loss of 6 holders — while 6 trimmed existing stakes and 9 added.
The largest buyer was Vanguard Group, adding an estimated $144K. The largest seller was EcoR1 Capital, exiting entirely with an estimated $782K sold.
- 32 institutional investors held HOOKIPA Pharma (HOOK) as of Q1 2025, down from 38 in Q4 2024.
- Funds reported $5.3M of HOOKIPA Pharma stock for Q1 2025, down 51% quarter-over-quarter.
- 4 funds opened new HOOKIPA Pharma positions in Q1 2025 and 10 closed out, a net change of -6 holders.
- The largest HOOKIPA Pharma buyer in Q1 2025 was Vanguard Group, an estimated $144K added.
- The largest HOOKIPA Pharma seller in Q1 2025 was EcoR1 Capital, an estimated $782K sold.
Based on aggregated 13F filings for Q1 2025.