Prothena Corp
PRTA
170 hedge funds and large institutions have $741M invested in Prothena Corp in 2024 Q4 according to their latest regulatory filings, with 34 funds opening new positions, 63 increasing their positions, 39 reducing their positions, and 28 closing their positions.
104% more call options, than puts
Call options by funds: $8.78M | Put options by funds: $4.31M
62% more repeat investments, than reductions
Existing positions increased: 63 | Existing positions reduced: 39
21% more first-time investments, than exits
New positions opened: 34 | Existing positions closed: 28
4.67% more ownership
Funds ownership: 94.79% → 99.46% (+4.7%)
4% more funds holding
Funds holding: 164 → 170 (+6)
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
13% less capital invested
Capital invested by funds: $856M → $741M (-$115M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
+$15M |
| 2 |
AC
Armistice Capital
New York
|
+$9.24M |
| 3 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
+$5.38M |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$4.87M |
| 5 |
FC
Finepoint Capital
Boston,
Massachusetts
|
+$3.53M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
GIM
Granahan Investment Management
Waltham,
Massachusetts
|
-$5.23M |
| 2 |
Citadel Advisors
Miami,
Florida
|
-$3.09M |
| 3 |
DTC
Deep Track Capital
Greenwich,
Connecticut
|
-$2.34M |
| 4 |
UBS AM
Chicago,
Illinois
|
-$2.29M |
| 5 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$2.16M |
PRTA Hedge Fund Activity: Q4 2024 in Review
170 of the 7,607 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q4 2024, worth a combined $741M — down 13% from $856M a quarter earlier.
Buyers outnumbered sellers: 34 funds opened new PRTA positions and 28 closed out — a net gain of 6 holders — while 63 added to existing stakes and 39 trimmed.
The largest buyer was Wellington Management Group, adding an estimated $15M. The largest seller was Granahan Investment Management, exiting entirely with an estimated $5.23M sold.
- 170 institutional investors held Prothena Corp (PRTA) as of Q4 2024, up from 164 in Q3 2024.
- Funds reported $741M of Prothena Corp stock for Q4 2024, down 13% quarter-over-quarter.
- 34 funds opened new Prothena Corp positions in Q4 2024 and 28 closed out, a net change of +6 holders.
- The largest Prothena Corp buyer in Q4 2024 was Wellington Management Group, an estimated $15M added.
- The largest Prothena Corp seller in Q4 2024 was Granahan Investment Management, an estimated $5.23M sold.
Based on aggregated 13F filings for Q4 2024.