Squarepoint’s Prothena Corp PRTA Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $2.19M | Sell |
223,971
-6,949
| -3% | -$68.6K | ﹤0.01% | 2270 |
|
|
2026
Q1 | $2.24M | Buy |
230,920
+12,879
| +6% | +$118K | ﹤0.01% | 2100 |
|
|
2025
Q4 | $2.08M | Buy |
218,041
+91,008
| +72% | +$926K | ﹤0.01% | 2032 |
|
|
2025
Q3 | $1.24M | Sell |
127,033
-82,216
| -39% | -$632K | ﹤0.01% | 2496 |
|
|
2025
Q2 | $1.27M | Buy |
+209,249
| New | +$1.57M | ﹤0.01% | 2462 |
|
|
2024
Q1 | – | Sell |
-74,030
| Closed | -$2.69M | – | 4485 |
|
|
2023
Q4 | $2.69M | Buy |
74,030
+41,691
| +129% | +$1.6M | 0.01% | 1807 |
|
|
2023
Q3 | $1.56M | Buy |
+32,339
| New | +$1.92M | ﹤0.01% | 2011 |
|
|
2023
Q2 | – | Sell |
-78,309
| Closed | -$3.8M | – | 3914 |
|
|
2023
Q1 | $3.8M | Buy |
78,309
+72,793
| +1,320% | +$3.85M | 0.02% | 1035 |
|
|
2022
Q4 | $332K | Buy |
+5,516
| New | +$323K | ﹤0.01% | 2520 |
|
|
2022
Q1 | – | Sell |
-6,606
| Closed | -$326K | – | 3376 |
|
|
2021
Q4 | $326K | Buy |
+6,606
| New | +$366K | ﹤0.01% | 2406 |
|
|
2021
Q3 | – | Sell |
-25,886
| Closed | -$1.33M | – | 3326 |
|
|
2021
Q2 | $1.33M | Buy |
25,886
+11,650
| +82% | +$363K | 0.01% | 1428 |
|
|
2021
Q1 | $358K | Sell |
14,236
-3,563
| -20% | -$67K | ﹤0.01% | 2276 |
|
|
2020
Q4 | $214K | Buy |
+17,799
| New | +$211K | ﹤0.01% | 2463 |
|
|
2020
Q3 | – | Sell |
-15,064
| Closed | -$158K | – | 2772 |
|
|
2020
Q2 | $158K | Sell |
15,064
-12,959
| -46% | -$144K | ﹤0.01% | 1898 |
|
|
2020
Q1 | $300K | Sell |
28,023
-60,676
| -68% | -$735K | 0.01% | 1300 |
|
|
2019
Q4 | $1.4M | Buy |
88,699
+50,772
| +134% | +$544K | 0.01% | 1121 |
|
|
2019
Q3 | $297K | Sell |
37,927
-109,721
| -74% | -$975K | ﹤0.01% | 1908 |
|
|
2019
Q2 | $1.56M | Buy |
147,648
+101,772
| +222% | +$1.05M | 0.02% | 989 |
|
|
2019
Q1 | $556K | Buy |
45,876
+27,915
| +155% | +$349K | 0.01% | 1433 |
|
|
2018
Q4 | $185K | Sell |
17,961
-36,298
| -67% | -$431K | ﹤0.01% | 1709 |
|
|
2018
Q3 | $710K | Buy |
+54,259
| New | +$784K | 0.01% | 1145 |
|
|
2017
Q4 | – | Sell |
-3,997
| Closed | -$259K | – | 2295 |
|
|
2017
Q3 | $259K | Buy |
+3,997
| New | +$245K | 0.01% | 1251 |
|
|
2016
Q3 | – | Sell |
-15,000
| Closed | -$524K | – | 1209 |
|
|
2016
Q2 | $524K | Buy |
+15,000
| New | +$653K | 0.03% | 545 |
|
|
2016
Q1 | – | Sell |
-4,900
| Closed | -$334K | – | 1399 |
|
|
2015
Q4 | $334K | Buy |
+4,900
| New | +$296K | 0.04% | 749 |
|
Other funds holding PRTA
RCMNY
ACM
PAI
Squarepoint's PRTA Position: Q2 2026 in Review
Squarepoint reduced its Prothena Corp (PRTA) stake by 3% in Q2 2026, selling an estimated $68.6K and leaving 223,971 shares worth $2.19M. The position accounts for ﹤0.01% of the portfolio, ranked #2270.
Squarepoint first reported a position in PRTA in Q4 2015 and has held it in 24 quarters since. The position peaked at $3.8M in Q1 2023. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.
- Squarepoint held 223,971 shares of Prothena Corp worth $2.19M as of Q2 2026.
- Squarepoint sold 6,949 Prothena Corp shares in Q2 2026, an estimated $68.6K.
- Prothena Corp made up ﹤0.01% of Squarepoint's portfolio in Q2 2026, its #2270 holding.
- Squarepoint first reported a position in Prothena Corp in Q4 2015 and has held it in 24 quarters since.
- Squarepoint's Prothena Corp position peaked at $3.8M in Q1 2023.
- 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.
Based on Squarepoint's 13F filing for Q2 2026, filed 14 Aug 2026.