Prothena Corp
PRTA
200 hedge funds and large institutions have $2.9B invested in Prothena Corp in 2022 Q4 according to their latest regulatory filings, with 44 funds opening new positions, 77 increasing their positions, 50 reducing their positions, and 23 closing their positions.
178% more call options, than puts
Call options by funds: $25.7M | Put options by funds: $9.23M
91% more first-time investments, than exits
New positions opened: 44 | Existing positions closed: 23
54% more repeat investments, than reductions
Existing positions increased: 77 | Existing positions reduced: 50
9% more funds holding
Funds holding: 183 → 200 (+17)
8% more capital invested
Capital invested by funds: $2.69B → $2.9B (+$203M)
1.6% less ownership
Funds ownership: 94.71% → 93.11% (-1.6%)
11% less funds holding in top 10
Funds holding in top 10: 9 → 8 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
+$78.1M |
| 2 |
Janus Henderson Group
London,
|
+$74.9M |
| 3 |
APM
Avidity Partners Management
Dallas,
Texas
|
+$57.7M |
| 4 |
Fidelity Investments
Boston,
Massachusetts
|
+$46M |
| 5 |
BlackRock
New York
|
+$20.3M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RG
Redmile Group
San Francisco,
California
|
-$31.9M |
| 2 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
-$20.4M |
| 3 |
SC
Sessa Capital
New York
|
-$11.3M |
| 4 |
Citadel Advisors
Miami,
Florida
|
-$11M |
| 5 |
Renaissance Technologies
New York
|
-$9.49M |
PRTA Hedge Fund Activity: Q4 2022 in Review
200 of the 6,237 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q4 2022, worth a combined $2.9B — up 7.5% from $2.69B a quarter earlier.
Buyers outnumbered sellers: 44 funds opened new PRTA positions and 23 closed out — a net gain of 21 holders — while 77 added to existing stakes and 50 trimmed.
The largest buyer was Wellington Management Group, adding an estimated $78.1M. The largest seller was Redmile Group, exiting entirely with an estimated $31.9M sold.
- 200 institutional investors held Prothena Corp (PRTA) as of Q4 2022, up from 183 in Q3 2022.
- Funds reported $2.9B of Prothena Corp stock for Q4 2022, up 7.5% quarter-over-quarter.
- 44 funds opened new Prothena Corp positions in Q4 2022 and 23 closed out, a net change of +21 holders.
- The largest Prothena Corp buyer in Q4 2022 was Wellington Management Group, an estimated $78.1M added.
- The largest Prothena Corp seller in Q4 2022 was Redmile Group, an estimated $31.9M sold.
Based on aggregated 13F filings for Q4 2022.