Prothena Corp
PRTA
146 hedge funds and large institutions have $1B invested in Prothena Corp in 2021 Q1 according to their latest regulatory filings, with 22 funds opening new positions, 39 increasing their positions, 49 reducing their positions, and 13 closing their positions.
196% more call options, than puts
Call options by funds: $16.5M | Put options by funds: $5.57M
140% more capital invested
Capital invested by funds: $418M → $1B (+$586M)
69% more first-time investments, than exits
New positions opened: 22 | Existing positions closed: 13
4% more funds holding
Funds holding: 140 → 146 (+6)
3.6% more ownership
Funds ownership: 87.23% → 90.83% (+3.6%)
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
20% less repeat investments, than reductions
Existing positions increased: 39 | Existing positions reduced: 49
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Associates
Baltimore,
Maryland
|
+$62M |
| 2 |
RG
Redmile Group
San Francisco,
California
|
+$34.9M |
| 3 |
Fidelity Investments
Boston,
Massachusetts
|
+$30.7M |
| 4 |
EC
EcoR1 Capital
San Francisco,
California
|
+$30.2M |
| 5 |
FLAM
First Light Asset Management
Edina,
Minnesota
|
+$16.5M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
O
OrbiMed
New York
|
-$21.6M |
| 2 |
IC
Ikarian Capital
Dallas,
Texas
|
-$14.1M |
| 3 |
GPP
Great Point Partners
Greenwich,
Connecticut
|
-$11.7M |
| 4 |
Millennium Management
New York
|
-$9.92M |
| 5 |
PM
Prosight Management
Dallas,
Texas
|
-$9.24M |
PRTA Hedge Fund Activity: Q1 2021 in Review
146 of the 5,695 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q1 2021, worth a combined $1B — up 140% from $418M a quarter earlier.
Buyers outnumbered sellers: 22 funds opened new PRTA positions and 13 closed out — a net gain of 9 holders — while 39 added to existing stakes and 49 trimmed.
The largest buyer was T. Rowe Price Associates, adding an estimated $62M. The largest seller was OrbiMed, exiting entirely with an estimated $21.6M sold.
- 146 institutional investors held Prothena Corp (PRTA) as of Q1 2021, up from 140 in Q4 2020.
- Funds reported $1B of Prothena Corp stock for Q1 2021, up 140% quarter-over-quarter.
- 22 funds opened new Prothena Corp positions in Q1 2021 and 13 closed out, a net change of +9 holders.
- The largest Prothena Corp buyer in Q1 2021 was T. Rowe Price Associates, an estimated $62M added.
- The largest Prothena Corp seller in Q1 2021 was OrbiMed, an estimated $21.6M sold.
Based on aggregated 13F filings for Q1 2021.