Caligan Partners LP
· Added
Change
+3.0M
Date
Q1 2026
IV
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Caligan Partners LP
· Added
Change
+3.0M
Date
Q1 2026
|
Caligan Partners LP | Added· Q1 2026 | – | +3.0M | – | Q1 2026 | |||||
|
Point72 Asset Management, L.P.
· New
Change
+956K
Date
Q1 2026
|
Point72 Asset Management, L.P. | New· Q1 2026 | – | +956K | – | Q1 2026 | |||||
|
Ikarian Capital, LLC
· Added
Change
+926K
Date
Q1 2026
|
Ikarian Capital, LLC | Added· Q1 2026 | – | +926K | – | Q1 2026 | |||||
|
Boothbay Fund Management, LLC
· Added
Change
+811K
Date
Q1 2026
|
Boothbay Fund Management, LLC | Added· Q1 2026 | – | +811K | – | Q1 2026 | |||||
|
Ally Bridge Group (ny) LLC
· Reduced
Change
−755K
Date
Q1 2026
|
Ally Bridge Group (ny) LLC | Reduced· Q1 2026 | – | −755K | – | Q1 2026 | |||||
|
Deep Track Capital, LP
· Added
Change
+732K
Date
Q1 2026
|
Deep Track Capital, LP | Added· Q1 2026 | – | +732K | – | Q1 2026 | |||||
|
Highvista Strategies LLC
· New
Change
+616K
Date
Q1 2026
|
Highvista Strategies LLC | New· Q1 2026 | – | +616K | – | Q1 2026 | |||||
|
Adar1 Capital Management, LLC
· Reduced
Change
−535K
Date
Q1 2026
|
Adar1 Capital Management, LLC | Reduced· Q1 2026 | – | −535K | – | Q1 2026 | |||||
|
Alyeska Investment Group, L.P.
· Exited
Change
−500K
Δ Own
−100.0%
Date
Q1 2026
|
Alyeska Investment Group, L.P. | Exited· Q1 2026 | – | −500K | −100.0% | Q1 2026 | |||||
|
Marshall Wace, LLP
· Added
Change
+482K
Date
Q1 2026
|
Marshall Wace, LLP | Added· Q1 2026 | – | +482K | – | Q1 2026 | |||||
|
Stempoint Capital LP
· Exited
Change
−467K
Δ Own
−100.0%
Date
Q1 2026
|
Stempoint Capital LP | Exited· Q1 2026 | – | −467K | −100.0% | Q1 2026 | |||||
|
J. Goldman & Co LP
· Reduced
Change
−413K
Date
Q1 2026
|
J. Goldman & Co LP | Reduced· Q1 2026 | – | −413K | – | Q1 2026 | |||||
|
Integral Health Asset Management, LLC
· New
Change
+400K
Date
Q1 2026
|
Integral Health Asset Management, LLC | New· Q1 2026 | – | +400K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Added
Change
+335K
Date
Q1 2026
|
Millennium Management LLC | Added· Q1 2026 | – | +335K | – | Q1 2026 | |||||
|
UBS Group AG
· Reduced
Change
−325K
Date
Q1 2026
|
UBS Group AG | Reduced· Q1 2026 | – | −325K | – | Q1 2026 | |||||
N
A
M
T
A
M
63 reporting institutions disclosed IVA position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.