RSCM
Rock Springs Capital Management’s Prothena Corp PRTA Stock Holding History
| Quarter | Market Value | Status | Shares |
Shares Change % | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q2 | $2.99M | Hold |
492,601
| – | – | 0.19% | 73 |
|
|
2025
Q1 | $6.1M | Sell |
492,601
-152,000
| -24% | -$1.88M | 0.35% | 60 |
|
|
2024
Q4 | $8.93M | Buy |
644,601
+19,553
| +3% | +$271K | 0.34% | 66 |
|
|
2024
Q3 | $10.5M | Hold |
625,048
| – | – | 0.34% | 67 |
|
|
2024
Q2 | $12.9M | Hold |
625,048
| – | – | 0.39% | 62 |
|
|
2024
Q1 | $15.5M | Hold |
625,048
| – | – | 0.39% | 65 |
|
|
2023
Q4 | $22.7M | Buy |
625,048
+10,750
| +2% | +$391K | 0.56% | 52 |
|
|
2023
Q3 | $29.6M | Sell |
614,298
-139,164
| -18% | -$6.71M | 0.79% | 40 |
|
|
2023
Q2 | $51.4M | Hold |
753,462
| – | – | 1.22% | 27 |
|
|
2023
Q1 | $36.5M | Hold |
753,462
| – | – | 0.87% | 43 |
|
|
2022
Q4 | $45.4M | Buy |
753,462
+75,000
| +11% | +$4.52M | 1.09% | 34 |
|
|
2022
Q3 | $41.1M | Hold |
678,462
| – | – | 1.06% | 32 |
|
|
2022
Q2 | $18.4M | Buy |
678,462
+14,932
| +2% | +$405K | 0.54% | 56 |
|
|
2022
Q1 | $24.3M | Buy |
663,530
+15,800
| +2% | +$578K | 0.61% | 55 |
|
|
2021
Q4 | $32M | Sell |
647,730
-62,700
| -9% | -$3.1M | 0.74% | 47 |
|
|
2021
Q3 | $50.6M | Sell |
710,430
-239,661
| -25% | -$17.1M | 1.06% | 30 |
|
|
2021
Q2 | $48.8M | Sell |
950,091
-206,809
| -18% | -$10.6M | 0.97% | 32 |
|
|
2021
Q1 | $29.1M | Buy |
1,156,900
+15,800
| +1% | +$397K | 0.63% | 55 |
|
|
2020
Q4 | $13.7M | Buy |
1,141,100
+115,893
| +11% | +$1.39M | 0.29% | 99 |
|
|
2020
Q3 | $10.2M | Buy |
1,025,207
+35,989
| +4% | +$360K | 0.26% | 101 |
|
|
2020
Q2 | $10.3M | Buy |
989,218
+489,218
| +98% | +$5.12M | 0.28% | 103 |
|
|
2020
Q1 | $5.35M | Buy |
+500,000
| New | +$5.35M | 0.22% | 94 |
|
|
2018
Q3 | – | Hold |
0
| – | – | – | 150 |
|
|
2018
Q2 | – | Sell |
-318,500
| Closed | -$11.7M | – | 150 |
|
|
2018
Q1 | $11.7M | Buy |
318,500
+8,500
| +3% | +$312K | 0.5% | 71 |
|
|
2017
Q4 | $11.6M | Buy |
310,000
+500
| +0.2% | +$18.7K | 0.53% | 66 |
|
|
2017
Q3 | $20M | Hold |
309,500
| – | – | 0.92% | 36 |
|
|
2017
Q2 | $16.8M | Hold |
309,500
| – | – | 0.85% | 43 |
|
|
2017
Q1 | $17.3M | Hold |
309,500
| – | – | 1% | 34 |
|
|
2016
Q4 | $15.2M | Buy |
309,500
+1,500
| +0.5% | +$73.8K | 1.02% | 32 |
|
|
2016
Q3 | $18.5M | Hold |
308,000
| – | – | 1.16% | 28 |
|
|
2016
Q2 | $10.8M | Hold |
308,000
| – | – | 0.8% | 40 |
|
|
2016
Q1 | $12.7M | Buy |
308,000
+60,000
| +24% | +$2.47M | 1.06% | 28 |
|
|
2015
Q4 | $16.9M | Hold |
248,000
| – | – | 1.28% | 23 |
|
|
2015
Q3 | $11.2M | Sell |
248,000
-2,000
| -0.8% | -$90.7K | 0.91% | 37 |
|
|
2015
Q2 | $13.2M | Buy |
250,000
+12,500
| +5% | +$658K | 0.96% | 33 |
|
|
2015
Q1 | $9.06M | Buy |
237,500
+35,000
| +17% | +$1.33M | 0.85% | 41 |
|
|
2014
Q4 | $4.2M | Hold |
202,500
| – | – | 0.49% | 62 |
|
|
2014
Q3 | $4.49M | Buy |
202,500
+52,500
| +35% | +$1.16M | 0.69% | 45 |
|
|
2014
Q2 | $3.38M | Buy |
150,000
+85,000
| +131% | +$1.92M | 0.61% | 60 |
|
|
2014
Q1 | $2.49M | Buy |
+65,000
| New | +$2.49M | 0.57% | 55 |
|