UBS AM’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 | $1.28K | Hold |
131
| – | – | ﹤0.01% | 3593 |
|
|
2026
Q1 | $1.27K | Buy |
+131
| New | +$1.2K | ﹤0.01% | 3657 |
|
|
2025
Q3 | – | Sell |
-139,284
| Closed | -$845K | – | 2522 |
|
|
2025
Q2 | $845K | Sell |
139,284
-242,368
| -64% | -$1.82M | ﹤0.01% | 2424 |
|
|
2025
Q1 | $4.72M | Buy |
381,652
+144
| +0% | +$2.04K | ﹤0.01% | 1605 |
|
|
2024
Q4 | $5.28M | Sell |
381,508
-145,240
| -28% | -$2.29M | ﹤0.01% | 1576 |
|
|
2024
Q3 | $8.81M | Buy |
526,748
+483,673
| +1,123% | +$10.4M | ﹤0.01% | 1295 |
|
|
2024
Q2 | $889K | Sell |
43,075
-332,090
| -89% | -$7.19M | ﹤0.01% | 2436 |
|
|
2024
Q1 | $9.29M | Buy |
375,165
+83,298
| +29% | +$2.48M | ﹤0.01% | 1027 |
|
|
2023
Q4 | $10.6M | Buy |
291,867
+25,820
| +10% | +$994K | ﹤0.01% | 960 |
|
|
2023
Q3 | $12.8M | Buy |
266,047
+39,845
| +18% | +$2.37M | 0.01% | 875 |
|
|
2023
Q2 | $11M | Hold |
226,202
| – | – | 0.01% | 938 |
|
|
2023
Q1 | $11M | Sell |
226,202
-2,166
| -0.9% | -$114K | 0.01% | 938 |
|
|
2022
Q4 | $13.8M | Sell |
228,368
-14,642
| -6% | -$857K | 0.01% | 840 |
|
|
2022
Q3 | $14.7M | Hold |
243,010
| – | – | 0.01% | 840 |
|
|
2022
Q2 | $6.6M | Sell |
243,010
-16,964
| -7% | -$496K | ﹤0.01% | 1114 |
|
|
2022
Q1 | $9.51M | Hold |
259,974
| – | – | ﹤0.01% | 1082 |
|
|
2021
Q4 | $12.8M | Sell |
259,974
-19,849
| -7% | -$1.1M | ﹤0.01% | 1034 |
|
|
2021
Q3 | $19.9M | Sell |
279,823
-122,345
| -30% | -$7.6M | 0.01% | 869 |
|
|
2021
Q2 | $20.7M | Buy |
402,168
+49,641
| +14% | +$1.55M | 0.01% | 878 |
|
|
2021
Q1 | $8.86M | Buy |
352,527
+316,420
| +876% | +$5.95M | ﹤0.01% | 1122 |
|
|
2020
Q4 | $434K | Hold |
36,107
| – | – | ﹤0.01% | 2335 |
|
|
2020
Q3 | $361K | Hold |
36,107
| – | – | ﹤0.01% | 2266 |
|
|
2020
Q2 | $378K | Sell |
36,107
-6,258
| -15% | -$69.5K | ﹤0.01% | 2222 |
|
|
2020
Q1 | $453K | Sell |
42,365
-11,048
| -21% | -$134K | ﹤0.01% | 2012 |
|
|
2019
Q4 | $846K | Buy |
53,413
+19,146
| +56% | +$205K | ﹤0.01% | 1998 |
|
|
2019
Q3 | $269K | Buy |
34,267
+3,452
| +11% | +$30.7K | ﹤0.01% | 2487 |
|
|
2019
Q2 | $326K | Buy |
30,815
+3,495
| +13% | +$35.9K | ﹤0.01% | 2382 |
|
|
2019
Q1 | $331K | Buy |
27,320
+12,320
| +82% | +$154K | ﹤0.01% | 2278 |
|
|
2018
Q4 | $155K | Hold |
15,000
| – | – | ﹤0.01% | 2464 |
|
|
2018
Q3 | $196K | Hold |
15,000
| – | – | ﹤0.01% | 2454 |
|
|
2018
Q2 | $219K | Buy |
15,000
+14,952
| +31,150% | +$295K | ﹤0.01% | 2442 |
|
|
2018
Q1 | $1.76K | Hold |
48
| – | – | ﹤0.01% | 2635 |
|
|
2017
Q4 | $1.8K | Hold |
48
| – | – | ﹤0.01% | 2554 |
|
|
2017
Q3 | $3.11K | Hold |
48
| – | – | ﹤0.01% | 2494 |
|
|
2017
Q2 | $2.6K | Hold |
48
| – | – | ﹤0.01% | 2483 |
|
|
2017
Q1 | $2.68K | Hold |
48
| – | – | ﹤0.01% | 2430 |
|
|
2016
Q4 | $2K | Buy |
+48
| New | +$2.65K | ﹤0.01% | 2449 |
|
Other funds holding PRTA
RCMNY
ACM
PAI
UBS AM's PRTA Position: Q2 2026 in Review
UBS AM held its Prothena Corp (PRTA) position steady in Q2 2026 at 131 shares worth $1.28K. The position accounts for ﹤0.01% of the portfolio, ranked #3593.
UBS AM first reported a position in PRTA in Q4 2016 and has held it in 37 quarters since. The position peaked at $20.7M in Q2 2021. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.
- UBS AM held 131 shares of Prothena Corp worth $1.28K as of Q2 2026.
- UBS AM left its Prothena Corp share count unchanged in Q2 2026.
- Prothena Corp made up ﹤0.01% of UBS AM's portfolio in Q2 2026, its #3593 holding.
- UBS AM first reported a position in Prothena Corp in Q4 2016 and has held it in 37 quarters since.
- UBS AM's Prothena Corp position peaked at $20.7M in Q2 2021.
- 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.
Based on UBS AM's 13F filing for Q2 2026, filed 13 Aug 2026.