Russell Investments Group’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 | $1.19M | Buy |
121,901
+21,274
| +21% | +$210K | ﹤0.01% | 2378 |
|
|
2026
Q1 | $978K | Buy |
100,627
+1,277
| +1% | +$11.7K | ﹤0.01% | 2227 |
|
|
2025
Q4 | $949K | Sell |
99,350
-28,407
| -22% | -$289K | ﹤0.01% | 2240 |
|
|
2025
Q3 | $1.25M | Buy |
127,757
+31,561
| +33% | +$243K | ﹤0.01% | 2104 |
|
|
2025
Q2 | $584K | Buy |
96,196
+95,002
| +7,957% | +$713K | ﹤0.01% | 2280 |
|
|
2025
Q1 | $14.8K | Buy |
1,194
+313
| +36% | +$4.43K | ﹤0.01% | 3163 |
|
|
2024
Q4 | $12.2K | Sell |
881
-114
| -11% | -$1.8K | ﹤0.01% | 3100 |
|
|
2024
Q3 | $16.6K | Sell |
995
-756
| -43% | -$16.3K | ﹤0.01% | 2993 |
|
|
2024
Q2 | $36.1K | Buy |
1,751
+1,621
| +1,247% | +$35.1K | ﹤0.01% | 2834 |
|
|
2024
Q1 | $3.22K | Sell |
130
-252
| -66% | -$7.5K | ﹤0.01% | 3009 |
|
|
2023
Q4 | $13.9K | Buy |
+382
| New | +$14.7K | ﹤0.01% | 2790 |
|
|
2022
Q1 | – | Sell |
-23,711
| Closed | -$1.17M | – | 2889 |
|
|
2021
Q4 | $1.17M | Buy |
23,711
+20,215
| +578% | +$1.12M | ﹤0.01% | 2070 |
|
|
2021
Q3 | $249K | Buy |
+3,496
| New | +$217K | ﹤0.01% | 2706 |
|
|
2021
Q2 | – | Sell |
-65,119
| Closed | -$1.63M | – | 3278 |
|
|
2021
Q1 | $1.63M | Sell |
65,119
-27,537
| -30% | -$518K | ﹤0.01% | 1995 |
|
|
2020
Q4 | $1.11M | Sell |
92,656
-3,637
| -4% | -$43K | ﹤0.01% | 2071 |
|
|
2020
Q3 | $960K | Sell |
96,293
-15,441
| -14% | -$186K | ﹤0.01% | 2084 |
|
|
2020
Q2 | $1.17M | Buy |
111,734
+18,216
| +19% | +$202K | ﹤0.01% | 1966 |
|
|
2020
Q1 | $999K | Buy |
93,518
+12,905
| +16% | +$156K | ﹤0.01% | 1843 |
|
|
2019
Q4 | $1.27M | Buy |
80,613
+26,013
| +48% | +$279K | ﹤0.01% | 1978 |
|
|
2019
Q3 | $428K | Sell |
54,600
-8,864
| -14% | -$78.7K | ﹤0.01% | 2359 |
|
|
2019
Q2 | $671K | Sell |
63,464
-15,387
| -20% | -$158K | ﹤0.01% | 2153 |
|
|
2019
Q1 | $956K | Buy |
78,851
+21,301
| +37% | +$266K | ﹤0.01% | 2089 |
|
|
2018
Q4 | $593K | Buy |
57,550
+5,839
| +11% | +$69.4K | ﹤0.01% | 2246 |
|
|
2018
Q3 | $676K | Buy |
51,711
+19,647
| +61% | +$284K | ﹤0.01% | 2266 |
|
|
2018
Q2 | $467K | Hold |
32,064
| – | – | ﹤0.01% | 2412 |
|
|
2018
Q1 | $1.18M | Buy |
32,064
+9,955
| +45% | +$362K | ﹤0.01% | 2136 |
|
|
2017
Q4 | $840K | Sell |
22,109
-15,216
| -41% | -$775K | ﹤0.01% | 2225 |
|
|
2017
Q3 | $2.42M | Buy |
37,325
+3,449
| +10% | +$211K | ﹤0.01% | 1674 |
|
|
2017
Q2 | $1.83M | Buy |
33,876
+21,846
| +182% | +$1.16M | ﹤0.01% | 1782 |
|
|
2017
Q1 | $671K | Buy |
12,030
+1,369
| +13% | +$71.9K | ﹤0.01% | 2309 |
|
|
2016
Q4 | $528K | Buy |
+10,661
| New | +$588K | ﹤0.01% | 2446 |
|
Other funds holding PRTA
RCMNY
ACM
PAI
Russell Investments Group's PRTA Position: Q2 2026 in Review
Russell Investments Group increased its Prothena Corp (PRTA) stake by 21% in Q2 2026, buying an estimated $210K and bringing the position to 121,901 shares worth $1.19M. The position accounts for ﹤0.01% of the portfolio, ranked #2378.
Russell Investments Group first reported a position in PRTA in Q4 2016 and has held it in 31 quarters since. The position peaked at $2.42M in Q3 2017. 187 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.
- Russell Investments Group held 121,901 shares of Prothena Corp worth $1.19M as of Q2 2026.
- Russell Investments Group bought 21,274 Prothena Corp shares in Q2 2026, an estimated $210K.
- Prothena Corp made up ﹤0.01% of Russell Investments Group's portfolio in Q2 2026, its #2378 holding.
- Russell Investments Group first reported a position in Prothena Corp in Q4 2016 and has held it in 31 quarters since.
- Russell Investments Group's Prothena Corp position peaked at $2.42M in Q3 2017.
- 187 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.
Based on Russell Investments Group's 13F filing for Q2 2026, filed 6 Aug 2026.