EcoR1 Capital’s Prothena Corp PRTA Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Shares Change % | Capital Flow | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q2 | – | Sell |
-11,584,280
| Closed | -$143M | – | 43 |
|
|
2025
Q1 | $143M | Hold |
11,584,280
| – | – | 8.5% | 6 |
|
|
2024
Q4 | $160M | Hold |
11,584,280
| – | – | 6.07% | 5 |
|
|
2024
Q3 | $194M | Hold |
11,584,280
| – | – | 6.63% | 4 |
|
|
2024
Q2 | $239M | Hold |
11,584,280
| – | – | 7.31% | 2 |
|
|
2024
Q1 | $287M | Hold |
11,584,280
| – | – | 7.26% | 2 |
|
|
2023
Q4 | $421M | Hold |
11,584,280
| – | – | 10.93% | 3 |
|
|
2023
Q3 | $559M | Hold |
11,584,280
| – | – | 18.85% | 1 |
|
|
2023
Q2 | $791M | Hold |
11,584,280
| – | – | 19.38% | 1 |
|
|
2023
Q1 | $561M | Hold |
11,584,280
| – | – | 18.08% | 1 |
|
|
2022
Q4 | $698M | Hold |
11,584,280
| – | – | 21.24% | 1 |
|
|
2022
Q3 | $702M | Hold |
11,584,280
| – | – | 20.73% | 1 |
|
|
2022
Q2 | $315M | Hold |
11,584,280
| – | – | 10.86% | 1 |
|
|
2022
Q1 | $424M | Buy |
11,584,280
+300,000
| +3% | +$11M | 13.25% | 1 |
|
|
2021
Q4 | $557M | Hold |
11,284,280
| – | – | 17.76% | 1 |
|
|
2021
Q3 | $804M | Hold |
11,284,280
| – | – | 27.96% | 1 |
|
|
2021
Q2 | $580M | Buy |
11,284,280
+250,000
| +2% | +$12.9M | 21.68% | 1 |
|
|
2021
Q1 | $277M | Buy |
11,034,280
+1,607,640
| +17% | +$40.4M | 12.29% | 1 |
|
|
2020
Q4 | $113M | Hold |
9,426,640
| – | – | 6.09% | 5 |
|
|
2020
Q3 | $94.2M | Hold |
9,426,640
| – | – | 6.71% | 4 |
|
|
2020
Q2 | $98.6M | Hold |
9,426,640
| – | – | 7.28% | 2 |
|
|
2020
Q1 | $101M | Hold |
9,426,640
| – | – | 10.54% | 1 |
|
|
2019
Q4 | $149M | Hold |
9,426,640
| – | – | 13.45% | 1 |
|
|
2019
Q3 | $73.9M | Buy |
9,426,640
+8,703,340
| +1,203% | +$68.2M | 9.33% | 2 |
|
|
2019
Q2 | $7.65M | Sell |
723,300
-3,219
| -0.4% | -$34K | 0.77% | 22 |
|
|
2019
Q1 | $8.81M | Sell |
726,519
-111,700
| -13% | -$1.35M | 0.81% | 25 |
|
|
2018
Q4 | $8.63M | Buy |
+838,219
| New | +$8.63M | 0.86% | 28 |
|