Prothena Corp
PRTA
156 hedge funds and large institutions have $2.08B invested in Prothena Corp in 2021 Q2 according to their latest regulatory filings, with 34 funds opening new positions, 50 increasing their positions, 39 reducing their positions, and 24 closing their positions.
107% more capital invested
Capital invested by funds: $1B → $2.08B (+$1.07B)
97% more call options, than puts
Call options by funds: $16.2M | Put options by funds: $8.25M
67% more funds holding in top 10
Funds holding in top 10: 3 → 5 (+2)
42% more first-time investments, than exits
New positions opened: 34 | Existing positions closed: 24
28% more repeat investments, than reductions
Existing positions increased: 50 | Existing positions reduced: 39
7% more funds holding
Funds holding: 146 → 156 (+10)
0.66% more ownership
Funds ownership: 90.83% → 91.5% (+0.66%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Associates
Baltimore,
Maryland
|
+$78.3M |
| 2 |
EC
EcoR1 Capital
San Francisco,
California
|
+$7.8M |
| 3 |
ACM
Atika Capital Management
New York
|
+$6.74M |
| 4 |
Adage Capital Partners
Boston,
Massachusetts
|
+$6.24M |
| 5 |
APM
Avidity Partners Management
Dallas,
Texas
|
+$5.68M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FLAM
First Light Asset Management
Edina,
Minnesota
|
-$31.4M |
| 2 |
RG
Redmile Group
San Francisco,
California
|
-$20M |
| 3 |
Goldman Sachs
New York
|
-$13.2M |
| 4 |
IC
Ikarian Capital
Dallas,
Texas
|
-$11M |
| 5 |
Fidelity Investments
Boston,
Massachusetts
|
-$10.5M |
PRTA Hedge Fund Activity: Q2 2021 in Review
156 of the 5,745 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q2 2021, worth a combined $2.08B — up 107% from $1B a quarter earlier.
Buyers outnumbered sellers: 34 funds opened new PRTA positions and 24 closed out — a net gain of 10 holders — while 50 added to existing stakes and 39 trimmed.
The largest buyer was T. Rowe Price Associates, adding an estimated $78.3M. The largest seller was First Light Asset Management, cutting an estimated $31.4M.
- 156 institutional investors held Prothena Corp (PRTA) as of Q2 2021, up from 146 in Q1 2021.
- Funds reported $2.08B of Prothena Corp stock for Q2 2021, up 107% quarter-over-quarter.
- 34 funds opened new Prothena Corp positions in Q2 2021 and 24 closed out, a net change of +10 holders.
- The largest Prothena Corp buyer in Q2 2021 was T. Rowe Price Associates, an estimated $78.3M added.
- The largest Prothena Corp seller in Q2 2021 was First Light Asset Management, an estimated $31.4M sold.
Based on aggregated 13F filings for Q2 2021.