Prosight Management, LP
· Added
Change
+476K
Date
Q1 2026
GL
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Prosight Management, LP
· Added
Change
+476K
Date
Q1 2026
|
Prosight Management, LP | Added· Q1 2026 | – | +476K | – | Q1 2026 | |||||
|
Madison Avenue Partners, LP
· Added
Change
+252K
Date
Q1 2026
|
Madison Avenue Partners, LP | Added· Q1 2026 | – | +252K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Reduced
Change
−231K
Date
Q1 2026
|
Millennium Management LLC | Reduced· Q1 2026 | – | −231K | – | Q1 2026 | |||||
|
UBS Group AG
· Reduced
Change
−174K
Date
Q1 2026
|
UBS Group AG | Reduced· Q1 2026 | – | −174K | – | Q1 2026 | |||||
|
Point72 Asset Management, L.P.
· Reduced
Change
−154K
Δ Own
−31.7%
Date
Q1 2026
|
Point72 Asset Management, L.P. | Reduced· Q1 2026 | – | −154K | −31.7% | Q1 2026 | |||||
|
Tang Capital Management LLC
· Reduced
Change
−135K
Date
Q1 2026
|
Tang Capital Management LLC | Reduced· Q1 2026 | – | −135K | – | Q1 2026 | |||||
|
Old Mission Capital LLC
· New
Change
+96K
Date
Q1 2026
|
Old Mission Capital LLC | New· Q1 2026 | – | +96K | – | Q1 2026 | |||||
|
Hudson Bay Capital Management LP
· Reduced
Change
−92K
Date
Q1 2026
|
Hudson Bay Capital Management LP | Reduced· Q1 2026 | – | −92K | – | Q1 2026 | |||||
|
Norges
· Exited
Change
−90K
Δ Own
−100.0%
Date
Q1 2026
|
Norges | Exited· Q1 2026 | – | −90K | −100.0% | Q1 2026 | |||||
|
Tower Research Capital LLC (trc)
· Added
Change
+66K
Date
Q1 2026
|
Tower Research Capital LLC (trc) | Added· Q1 2026 | – | +66K | – | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Reduced
Change
−59K
Δ Own
−21.6%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Reduced· Q1 2026 | – | −59K | −21.6% | Q1 2026 | |||||
|
FMR LLC
· Reduced
Change
−57K
Δ Own
−100.0%
Date
Q1 2026
|
FMR LLC | Reduced· Q1 2026 | – | −57K | −100.0% | Q1 2026 | |||||
|
Hrt Financial LP
· New
Change
+45K
Date
Q1 2026
|
Hrt Financial LP | New· Q1 2026 | – | +45K | – | Q1 2026 | |||||
|
Morgan Stanley
· Reduced
Change
−42K
Date
Q1 2026
|
Morgan Stanley | Reduced· Q1 2026 | – | −42K | – | Q1 2026 | |||||
|
Massar Capital Management, LP
· Exited
Change
−39K
Δ Own
−100.0%
Date
Q1 2026
|
Massar Capital Management, LP | Exited· Q1 2026 | – | −39K | −100.0% | Q1 2026 | |||||
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90 reporting institutions disclosed GLPG 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.