Bank of New York Mellon’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 | $1.31M | Sell |
133,906
-2,416
| -2% | -$23.9K | ﹤0.01% | 3207 |
|
|
2026
Q1 | $1.33M | Buy |
136,322
+3,622
| +3% | +$33.2K | ﹤0.01% | 3041 |
|
|
2025
Q4 | $1.27M | Sell |
132,700
-21,100
| -14% | -$215K | ﹤0.01% | 3102 |
|
|
2025
Q3 | $1.5M | Buy |
153,800
+5,450
| +4% | +$41.9K | ﹤0.01% | 2972 |
|
|
2025
Q2 | $900K | Buy |
148,350
+2,341
| +2% | +$17.6K | ﹤0.01% | 3185 |
|
|
2025
Q1 | $1.81M | Sell |
146,009
-4,229
| -3% | -$59.8K | ﹤0.01% | 2746 |
|
|
2024
Q4 | $2.08M | Buy |
150,238
+19,452
| +15% | +$307K | ﹤0.01% | 2749 |
|
|
2024
Q3 | $2.19M | Sell |
130,786
-34,637
| -21% | -$745K | ﹤0.01% | 2704 |
|
|
2024
Q2 | $3.41M | Buy |
165,423
+19,578
| +13% | +$424K | ﹤0.01% | 2518 |
|
|
2024
Q1 | $3.61M | Sell |
145,845
-296,464
| -67% | -$8.82M | ﹤0.01% | 2476 |
|
|
2023
Q4 | $16.1M | Sell |
442,309
-57,073
| -11% | -$2.2M | ﹤0.01% | 1706 |
|
|
2023
Q3 | $24.1M | Sell |
499,382
-14,851
| -3% | -$882K | 0.01% | 1454 |
|
|
2023
Q2 | $35.1M | Buy |
514,233
+350,141
| +213% | +$22.6M | 0.01% | 1224 |
|
|
2023
Q1 | $7.95M | Buy |
164,092
+27,095
| +20% | +$1.43M | ﹤0.01% | 2042 |
|
|
2022
Q4 | $8.25M | Sell |
136,997
-3,195
| -2% | -$187K | ﹤0.01% | 2036 |
|
|
2022
Q3 | $8.5M | Buy |
140,192
+20,828
| +17% | +$658K | ﹤0.01% | 1993 |
|
|
2022
Q2 | $3.24M | Sell |
119,364
-34,917
| -23% | -$1.02M | ﹤0.01% | 2553 |
|
|
2022
Q1 | $5.64M | Buy |
154,281
+1,821
| +1% | +$65.6K | ﹤0.01% | 2358 |
|
|
2021
Q4 | $7.53M | Buy |
152,460
+15,173
| +11% | +$841K | ﹤0.01% | 2255 |
|
|
2021
Q3 | $9.78M | Buy |
137,287
+1,832
| +1% | +$114K | ﹤0.01% | 2135 |
|
|
2021
Q2 | $6.96M | Buy |
135,455
+5,455
| +4% | +$170K | ﹤0.01% | 2331 |
|
|
2021
Q1 | $3.27M | Sell |
130,000
-9,522
| -7% | -$179K | ﹤0.01% | 2650 |
|
|
2020
Q4 | $1.68M | Sell |
139,522
-9,160
| -6% | -$108K | ﹤0.01% | 2949 |
|
|
2020
Q3 | $1.49M | Sell |
148,682
-10,867
| -7% | -$131K | ﹤0.01% | 2864 |
|
|
2020
Q2 | $1.67M | Sell |
159,549
-172,891
| -52% | -$1.92M | ﹤0.01% | 2786 |
|
|
2020
Q1 | $3.56M | Sell |
332,440
-4,072
| -1% | -$49.3K | ﹤0.01% | 2253 |
|
|
2019
Q4 | $5.33M | Buy |
336,512
+2,683
| +0.8% | +$28.8K | ﹤0.01% | 2308 |
|
|
2019
Q3 | $2.62M | Sell |
333,829
-5,483
| -2% | -$48.7K | ﹤0.01% | 2605 |
|
|
2019
Q2 | $3.59M | Sell |
339,312
-22,176
| -6% | -$228K | ﹤0.01% | 2495 |
|
|
2019
Q1 | $4.38M | Sell |
361,488
-11,584
| -3% | -$145K | ﹤0.01% | 2398 |
|
|
2018
Q4 | $3.84M | Buy |
373,072
+169,070
| +83% | +$2.01M | ﹤0.01% | 2439 |
|
|
2018
Q3 | $2.67M | Buy |
204,002
+15,907
| +8% | +$230K | ﹤0.01% | 2693 |
|
|
2018
Q2 | $2.74M | Buy |
188,095
+8,842
| +5% | +$175K | ﹤0.01% | 2678 |
|
|
2018
Q1 | $6.58M | Buy |
179,253
+3,405
| +2% | +$124K | ﹤0.01% | 2203 |
|
|
2017
Q4 | $6.59M | Sell |
175,848
-9,572
| -5% | -$487K | ﹤0.01% | 2216 |
|
|
2017
Q3 | $12M | Sell |
185,420
-42
| -0% | -$2.57K | ﹤0.01% | 1892 |
|
|
2017
Q2 | $10M | Buy |
185,462
+13,492
| +8% | +$719K | ﹤0.01% | 1970 |
|
|
2017
Q1 | $9.59M | Buy |
171,970
+10,397
| +6% | +$546K | ﹤0.01% | 1999 |
|
|
2016
Q4 | $7.95M | Buy |
161,573
+1,629
| +1% | +$89.9K | ﹤0.01% | 2077 |
|
|
2016
Q3 | $9.59M | Sell |
159,944
-2,726
| -2% | -$146K | ﹤0.01% | 1899 |
|
|
2016
Q2 | $5.69M | Buy |
162,670
+1,917
| +1% | +$83.5K | ﹤0.01% | 2147 |
|
|
2016
Q1 | $6.62M | Sell |
160,753
-2,184
| -1% | -$85.5K | ﹤0.01% | 2041 |
|
|
2015
Q4 | $11.1M | Sell |
162,937
-2,867
| -2% | -$173K | ﹤0.01% | 1777 |
|
|
2015
Q3 | $7.52M | Sell |
165,804
-27,096
| -14% | -$1.58M | ﹤0.01% | 2011 |
|
|
2015
Q2 | $10.2M | Buy |
192,900
+41,115
| +27% | +$1.62M | ﹤0.01% | 1959 |
|
|
2015
Q1 | $5.79M | Buy |
151,785
+12,347
| +9% | +$317K | ﹤0.01% | 2235 |
|
|
2014
Q4 | $2.9M | Buy |
139,438
+15,140
| +12% | +$316K | ﹤0.01% | 2616 |
|
|
2014
Q3 | $2.75M | Buy |
124,298
+26,857
| +28% | +$569K | ﹤0.01% | 2658 |
|
|
2014
Q2 | $2.2M | Buy |
97,441
+11,604
| +14% | +$290K | ﹤0.01% | 2857 |
|
|
2014
Q1 | $3.29M | Buy |
85,837
+13,866
| +19% | +$447K | ﹤0.01% | 2560 |
|
|
2013
Q4 | $1.91M | Buy |
71,971
+18,104
| +34% | +$454K | ﹤0.01% | 2917 |
|
|
2013
Q3 | $1.09M | Buy |
53,867
+5,032
| +10% | +$89K | ﹤0.01% | 3196 |
|
|
2013
Q2 | $631K | Buy |
+48,835
| New | +$454K | ﹤0.01% | 3408 |
|
Other funds holding PRTA
PM
FWM
HWAM
DA
DWAM
CCIA
Bank of New York Mellon's PRTA Position: Q2 2026 in Review
Bank of New York Mellon reduced its Prothena Corp (PRTA) stake by 1.8% in Q2 2026, selling an estimated $23.9K and leaving 133,906 shares worth $1.31M. The position accounts for ﹤0.01% of the portfolio, ranked #3207.
Bank of New York Mellon first reported a position in PRTA in Q2 2013 and has held it in 53 quarters since. The position peaked at $35.1M in Q2 2023. 76 funds tracked by Wall St. Rank hold PRTA as of Q2 2026.
- Bank of New York Mellon held 133,906 shares of Prothena Corp worth $1.31M as of Q2 2026.
- Bank of New York Mellon sold 2,416 Prothena Corp shares in Q2 2026, an estimated $23.9K.
- Prothena Corp made up ﹤0.01% of Bank of New York Mellon's portfolio in Q2 2026, its #3207 holding.
- Bank of New York Mellon first reported a position in Prothena Corp in Q2 2013 and has held it in 53 quarters since.
- Bank of New York Mellon's Prothena Corp position peaked at $35.1M in Q2 2023.
- 76 funds tracked by Wall St. Rank held Prothena Corp as of Q2 2026.
Based on Bank of New York Mellon's 13F filing for Q2 2026, filed 6 Aug 2026.