Two Sigma Advisers’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
Q1 | – | Sell |
-427,400
| Closed | -$4.08M | – | 1624 |
|
|
2025
Q4 | $4.08M | Buy |
427,400
+161,700
| +61% | +$1.65M | 0.01% | 908 |
|
|
2025
Q3 | $2.59M | Buy |
265,700
+125,900
| +90% | +$968K | 0.01% | 1017 |
|
|
2025
Q2 | $849K | Buy |
+139,800
| New | +$1.05M | ﹤0.01% | 1520 |
|
|
2024
Q2 | – | Sell |
-8,300
| Closed | -$206K | – | 2630 |
|
|
2024
Q1 | $206K | Sell |
8,300
-138,500
| -94% | -$4.12M | ﹤0.01% | 2208 |
|
|
2023
Q4 | $5.33M | Sell |
146,800
-57,000
| -28% | -$2.19M | 0.01% | 774 |
|
|
2023
Q3 | $9.83M | Sell |
203,800
-62,500
| -23% | -$3.71M | 0.03% | 477 |
|
|
2023
Q2 | $18.2M | Sell |
266,300
-115,000
| -30% | -$7.42M | 0.05% | 325 |
|
|
2023
Q1 | $18.5M | Buy |
381,300
+54,300
| +17% | +$2.87M | 0.05% | 354 |
|
|
2022
Q4 | $19.7M | Sell |
327,000
-8,000
| -2% | -$468K | 0.06% | 342 |
|
|
2022
Q3 | $20.3M | Sell |
335,000
-112,700
| -25% | -$3.56M | 0.06% | 318 |
|
|
2022
Q2 | $12.2M | Buy |
447,700
+31,500
| +8% | +$922K | 0.03% | 457 |
|
|
2022
Q1 | $15.2M | Buy |
416,200
+7,800
| +2% | +$281K | 0.04% | 388 |
|
|
2021
Q4 | $20.2M | Sell |
408,400
-65,300
| -14% | -$3.62M | 0.05% | 305 |
|
|
2021
Q3 | $33.7M | Buy |
473,700
+51,400
| +12% | +$3.19M | 0.09% | 220 |
|
|
2021
Q2 | $21.7M | Buy |
422,300
+75,500
| +22% | +$2.36M | 0.06% | 311 |
|
|
2021
Q1 | $8.71M | Buy |
346,800
+170,600
| +97% | +$3.21M | 0.02% | 633 |
|
|
2020
Q4 | $2.12M | Sell |
176,200
-35,400
| -17% | -$419K | 0.01% | 1230 |
|
|
2020
Q3 | $2.11M | Sell |
211,600
-3,200
| -1% | -$38.5K | 0.01% | 1139 |
|
|
2020
Q2 | $2.25M | Buy |
214,800
+10,900
| +5% | +$121K | 0.01% | 1145 |
|
|
2020
Q1 | $2.18M | Buy |
203,900
+2,800
| +1% | +$33.9K | 0.01% | 1068 |
|
|
2019
Q4 | $3.18M | Sell |
201,100
-19,600
| -9% | -$210K | 0.01% | 1018 |
|
|
2019
Q3 | $1.73M | Sell |
220,700
-54,800
| -20% | -$487K | ﹤0.01% | 1174 |
|
|
2019
Q2 | $2.91M | Sell |
275,500
-4,400
| -2% | -$45.2K | 0.01% | 1040 |
|
|
2019
Q1 | $3.4M | Buy |
279,900
+142,200
| +103% | +$1.78M | 0.01% | 983 |
|
|
2018
Q4 | $1.42M | Buy |
137,700
+75,700
| +122% | +$900K | ﹤0.01% | 1334 |
|
|
2018
Q3 | $811K | Buy |
62,000
+48,600
| +363% | +$702K | ﹤0.01% | 1590 |
|
|
2018
Q2 | $195K | Buy |
+13,400
| New | +$265K | ﹤0.01% | 2202 |
|
|
2016
Q1 | – | Sell |
-10,100
| Closed | -$688K | – | 2114 |
|
|
2015
Q4 | $688K | Sell |
10,100
-100
| -1% | -$6.03K | ﹤0.01% | 1196 |
|
|
2015
Q3 | $565K | Sell |
10,200
-25,700
| -72% | -$1.5M | ﹤0.01% | 1255 |
|
|
2015
Q2 | $1.89M | Buy |
+35,900
| New | +$1.42M | 0.01% | 836 |
|
|
2014
Q3 | – | Sell |
-40,500
| Closed | -$913K | – | 2602 |
|
|
2014
Q2 | $913K | Buy |
40,500
+23,000
| +131% | +$575K | 0.01% | 1231 |
|
|
2014
Q1 | $671K | Buy |
+17,500
| New | +$564K | 0.01% | 1391 |
|
Other funds holding PRTA
RCMNY
ACM
PAI
Two Sigma Advisers's PRTA Position: Q1 2026 in Review
Two Sigma Advisers sold out of Prothena Corp (PRTA) in Q1 2026, closing a stake of 427,400 shares — an estimated $4.08M sold.
Two Sigma Advisers first reported a position in PRTA in Q1 2014 and held it in 32 quarters. The position peaked at $33.7M in Q3 2021. 185 funds tracked by Wall St. Rank hold PRTA as of Q1 2026.
- Two Sigma Advisers reported no remaining Prothena Corp position as of Q1 2026 after selling out during the quarter.
- Two Sigma Advisers sold 427,400 Prothena Corp shares in Q1 2026, an estimated $4.08M.
- Two Sigma Advisers first reported a position in Prothena Corp in Q1 2014 and held it in 32 quarters.
- Two Sigma Advisers's Prothena Corp position peaked at $33.7M in Q3 2021.
- 185 funds tracked by Wall St. Rank held Prothena Corp as of Q1 2026.
Based on Two Sigma Advisers's 13F filing for Q1 2026.