Morgan Stanley’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 | $9.74M | Sell |
995,348
-235,100
| -19% | -$2.32M | ﹤0.01% | 3701 |
|
|
2026
Q1 | $12M | Sell |
1,230,448
-16,327
| -1% | -$150K | ﹤0.01% | 3418 |
|
|
2025
Q4 | $11.9M | Buy |
1,246,775
+447,101
| +56% | +$4.55M | ﹤0.01% | 3450 |
|
|
2025
Q3 | $7.8M | Sell |
799,674
-153,582
| -16% | -$1.18M | ﹤0.01% | 3769 |
|
|
2025
Q2 | $5.79M | Buy |
953,256
+233,268
| +32% | +$1.75M | ﹤0.01% | 3940 |
|
|
2025
Q1 | $8.91M | Buy |
719,988
+498
| +0.1% | +$7.04K | ﹤0.01% | 3449 |
|
|
2024
Q4 | $9.96M | Buy |
719,490
+203
| +0% | +$3.2K | ﹤0.01% | 3420 |
|
|
2024
Q3 | $12M | Sell |
719,287
-91,416
| -11% | -$1.97M | ﹤0.01% | 3280 |
|
|
2024
Q2 | $16.7M | Buy |
810,703
+158,235
| +24% | +$3.42M | ﹤0.01% | 2860 |
|
|
2024
Q1 | $16.2M | Sell |
652,468
-312,052
| -32% | -$9.28M | ﹤0.01% | 2923 |
|
|
2023
Q4 | $35.1M | Buy |
964,520
+695,660
| +259% | +$26.8M | ﹤0.01% | 2820 |
|
|
2023
Q3 | $13M | Buy |
268,860
+116,265
| +76% | +$6.91M | ﹤0.01% | 2877 |
|
|
2023
Q2 | $10.4M | Sell |
152,595
-132,312
| -46% | -$8.53M | ﹤0.01% | 3115 |
|
|
2023
Q1 | $13.8M | Buy |
284,907
+104,504
| +58% | +$5.52M | ﹤0.01% | 2835 |
|
|
2022
Q4 | $10.9M | Buy |
180,403
+13,904
| +8% | +$814K | ﹤0.01% | 2997 |
|
|
2022
Q3 | $10.1M | Sell |
166,499
-186,083
| -53% | -$5.88M | ﹤0.01% | 2976 |
|
|
2022
Q2 | $9.57M | Buy |
352,582
+3,061
| +0.9% | +$89.5K | ﹤0.01% | 3108 |
|
|
2022
Q1 | $12.8M | Buy |
349,521
+169,990
| +95% | +$6.13M | ﹤0.01% | 2610 |
|
|
2021
Q4 | $8.87M | Buy |
179,531
+117,351
| +189% | +$6.51M | ﹤0.01% | 3077 |
|
|
2021
Q3 | $4.43M | Buy |
62,180
+17,240
| +38% | +$1.07M | ﹤0.01% | 3860 |
|
|
2021
Q2 | $2.31M | Buy |
44,940
+30,665
| +215% | +$957K | ﹤0.01% | 4521 |
|
|
2021
Q1 | $359K | Sell |
14,275
-106,757
| -88% | -$2.01M | ﹤0.01% | 5338 |
|
|
2020
Q4 | $1.45M | Buy |
121,032
+32,749
| +37% | +$387K | ﹤0.01% | 4415 |
|
|
2020
Q3 | $882K | Sell |
88,283
-11,990
| -12% | -$144K | ﹤0.01% | 4302 |
|
|
2020
Q2 | $1.05M | Sell |
100,273
-6,298
| -6% | -$70K | ﹤0.01% | 4135 |
|
|
2020
Q1 | $1.14M | Buy |
106,571
+24,885
| +30% | +$301K | ﹤0.01% | 3851 |
|
|
2019
Q4 | $1.29M | Sell |
81,686
-464,910
| -85% | -$4.99M | ﹤0.01% | 4355 |
|
|
2019
Q3 | $4.29M | Sell |
546,596
-36,939
| -6% | -$328K | ﹤0.01% | 3030 |
|
|
2019
Q2 | $6.17M | Sell |
583,535
-97,930
| -14% | -$1.01M | ﹤0.01% | 2702 |
|
|
2019
Q1 | $8.27M | Buy |
681,465
+581,519
| +582% | +$7.26M | ﹤0.01% | 2224 |
|
|
2018
Q4 | $1.03M | Buy |
99,946
+27,366
| +38% | +$325K | ﹤0.01% | 4256 |
|
|
2018
Q3 | $948K | Sell |
72,580
-240,926
| -77% | -$3.48M | ﹤0.01% | 4579 |
|
|
2018
Q2 | $4.57M | Buy |
313,506
+214,004
| +215% | +$4.23M | ﹤0.01% | 3243 |
|
|
2018
Q1 | $3.65M | Sell |
99,502
-57,017
| -36% | -$2.07M | ﹤0.01% | 3383 |
|
|
2017
Q4 | $5.87M | Buy |
156,519
+67,165
| +75% | +$3.42M | ﹤0.01% | 2931 |
|
|
2017
Q3 | $5.79M | Buy |
89,354
+20,747
| +30% | +$1.27M | ﹤0.01% | 2805 |
|
|
2017
Q2 | $3.71M | Sell |
68,607
-14,439
| -17% | -$769K | ﹤0.01% | 3195 |
|
|
2017
Q1 | $4.63M | Sell |
83,046
-56,543
| -41% | -$2.97M | ﹤0.01% | 2932 |
|
|
2016
Q4 | $6.87M | Buy |
139,589
+102,465
| +276% | +$5.65M | ﹤0.01% | 2664 |
|
|
2016
Q3 | $2.23M | Sell |
37,124
-1,426
| -4% | -$76.5K | ﹤0.01% | 3416 |
|
|
2016
Q2 | $1.35M | Buy |
38,550
+18,560
| +93% | +$808K | ﹤0.01% | 3736 |
|
|
2016
Q1 | $824K | Buy |
19,990
+1,243
| +7% | +$48.6K | ﹤0.01% | 4101 |
|
|
2015
Q4 | $1.28M | Buy |
18,747
+1,830
| +11% | +$110K | ﹤0.01% | 3868 |
|
|
2015
Q3 | $768K | Buy |
16,917
+6,560
| +63% | +$382K | ﹤0.01% | 4331 |
|
|
2015
Q2 | $546K | Sell |
10,357
-1,591
| -13% | -$62.8K | ﹤0.01% | 4658 |
|
|
2015
Q1 | $455K | Sell |
11,948
-107,089
| -90% | -$2.75M | ﹤0.01% | 4725 |
|
|
2014
Q4 | $2.47M | Buy |
119,037
+105,355
| +770% | +$2.2M | ﹤0.01% | 3369 |
|
|
2014
Q3 | $303K | Sell |
13,682
-46,171
| -77% | -$979K | ﹤0.01% | 4901 |
|
|
2014
Q2 | $1.35M | Sell |
59,853
-148,744
| -71% | -$3.72M | ﹤0.01% | 3804 |
|
|
2014
Q1 | $7.99M | Buy |
208,597
+201,182
| +2,713% | +$6.49M | ﹤0.01% | 2142 |
|
|
2013
Q4 | $197K | Sell |
7,415
-56,865
| -88% | -$1.43M | ﹤0.01% | 5033 |
|
|
2013
Q3 | $1.3M | Sell |
64,280
-38,555
| -37% | -$682K | ﹤0.01% | 3571 |
|
|
2013
Q2 | $1.33M | Buy |
+102,835
| New | +$957K | ﹤0.01% | 3472 |
|
Other funds holding PRTA
RCMNY
ACM
PAI
Morgan Stanley's PRTA Position: Q2 2026 in Review
Morgan Stanley reduced its Prothena Corp (PRTA) stake by 19% in Q2 2026, selling an estimated $2.32M and leaving 995,348 shares worth $9.74M. The position accounts for ﹤0.01% of the portfolio, ranked #3701.
Morgan Stanley first reported a position in PRTA in Q2 2013 and has held it in 53 quarters since. The position peaked at $35.1M in Q4 2023. 188 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.
- Morgan Stanley held 995,348 shares of Prothena Corp worth $9.74M as of Q2 2026.
- Morgan Stanley sold 235,100 Prothena Corp shares in Q2 2026, an estimated $2.32M.
- Prothena Corp made up ﹤0.01% of Morgan Stanley's portfolio in Q2 2026, its #3701 holding.
- Morgan Stanley first reported a position in Prothena Corp in Q2 2013 and has held it in 53 quarters since.
- Morgan Stanley's Prothena Corp position peaked at $35.1M in Q4 2023.
- 188 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.
Based on Morgan Stanley's 13F filing for Q2 2026, filed 13 Aug 2026.