Bank of America’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
$3.83M Sell
393,632
-33,728
-8% -$309K ﹤0.01% 3660
2025
Q4
$4.08M Buy
427,360
+150,264
+54% +$1.53M ﹤0.01% 3541
2025
Q3
$2.7M Buy
277,096
+66,151
+31% +$508K ﹤0.01% 4553
2025
Q2
$1.28M Buy
210,945
+78,959
+60% +$593K ﹤0.01% 5125
2025
Q1
$1.63M Buy
131,986
+12,979
+11% +$184K ﹤0.01% 4843
2024
Q4
$1.65M Buy
119,007
+36,944
+45% +$583K ﹤0.01% 4613
2024
Q3
$1.37M Sell
82,063
-36,801
-31% -$791K ﹤0.01% 4843
2024
Q2
$2.45M Sell
118,864
-121,479
-51% -$2.63M ﹤0.01% 4283
2024
Q1
$5.95M Sell
240,343
-47,012
-16% -$1.4M ﹤0.01% 3454
2023
Q4
$10.4M Buy
287,355
+177,932
+163% +$6.85M ﹤0.01% 2846
2023
Q3
$5.28M Sell
109,423
-49,439
-31% -$2.94M ﹤0.01% 3349
2023
Q2
$10.8M Sell
158,862
-405,579
-72% -$26.2M ﹤0.01% 2632
2023
Q1
$27.4M Buy
564,441
+442,770
+364% +$23.4M ﹤0.01% 1837
2022
Q4
$7.33M Buy
121,671
+38,574
+46% +$2.26M ﹤0.01% 2988
2022
Q3
$5.04M Buy
83,097
+17,753
+27% +$561K ﹤0.01% 3345
2022
Q2
$1.77M Sell
65,344
-92,875
-59% -$2.72M ﹤0.01% 4411
2022
Q1
$5.79M Sell
158,219
-10,283
-6% -$371K ﹤0.01% 3471
2021
Q4
$8.32M Buy
168,502
+134,928
+402% +$7.48M ﹤0.01% 3127
2021
Q3
$2.39M Buy
33,574
+17,431
+108% +$1.08M ﹤0.01% 4271
2021
Q2
$829K Sell
16,143
-31,754
-66% -$991K ﹤0.01% 5050
2021
Q1
$1.2M Buy
47,897
+32,894
+219% +$619K ﹤0.01% 4678
2020
Q4
$181K Sell
15,003
-35,425
-70% -$419K ﹤0.01% 5666
2020
Q3
$504K Buy
50,428
+19,131
+61% +$230K ﹤0.01% 4709
2020
Q2
$328K Buy
31,297
+12,355
+65% +$137K ﹤0.01% 4926
2020
Q1
$203K Sell
18,942
-711
-4% -$8.61K ﹤0.01% 5071
2019
Q4
$311K Sell
19,653
-14,034
-42% -$150K ﹤0.01% 5340
2019
Q3
$264K Sell
33,687
-207,531
-86% -$1.84M ﹤0.01% 5495
2019
Q2
$2.55M Buy
241,218
+12,582
+6% +$129K ﹤0.01% 3847
2019
Q1
$2.77M Sell
228,636
-300,626
-57% -$3.75M ﹤0.01% 3717
2018
Q4
$5.45M Sell
529,262
-343,695
-39% -$4.09M ﹤0.01% 2904
2018
Q3
$11.4M Buy
872,957
+697,038
+396% +$10.1M ﹤0.01% 2354
2018
Q2
$2.56M Buy
175,919
+155,108
+745% +$3.06M ﹤0.01% 3776
2018
Q1
$764K Buy
20,811
+6,756
+48% +$246K ﹤0.01% 4557
2017
Q4
$526K Sell
14,055
-5,284
-27% -$269K ﹤0.01% 4911
2017
Q3
$1.25M Buy
19,339
+7,613
+65% +$466K ﹤0.01% 4355
2017
Q2
$635K Sell
11,726
-4,149
-26% -$221K ﹤0.01% 4747
2017
Q1
$886K Buy
15,875
+7,735
+95% +$406K ﹤0.01% 4510
2016
Q4
$400K Buy
8,140
+5,003
+159% +$276K ﹤0.01% 4960
2016
Q3
$189K Sell
3,137
-3,246
-51% -$174K ﹤0.01% 5148
2016
Q2
$223K Buy
6,383
+4,214
+194% +$184K ﹤0.01% 5146
2016
Q1
$89K Sell
2,169
-6,191
-74% -$242K ﹤0.01% 5536
2015
Q4
$570K Buy
8,360
+6,846
+452% +$413K ﹤0.01% 4733
2015
Q3
$69K Sell
1,514
-14,124
-90% -$823K ﹤0.01% 5824
2015
Q2
$824K Buy
15,638
+14,601
+1,408% +$576K ﹤0.01% 4273
2015
Q1
$39K Sell
1,037
-4,509
-81% -$116K ﹤0.01% 5771
2014
Q4
$115K Sell
5,546
-7,991
-59% -$167K ﹤0.01% 5783
2014
Q3
$300K Sell
13,537
-1,642,507
-99% -$34.8M ﹤0.01% 5036
2014
Q2
$37.3M Buy
1,656,044
+1,649,241
+24,243% +$41.2M 0.01% 985
2014
Q1
$261K Buy
6,803
+638
+10% +$20.6K ﹤0.01% 5201
2013
Q4
$164K Buy
6,165
+3,089
+100% +$77.5K ﹤0.01% 5761
2013
Q3
$62K Sell
3,076
-15,848
-84% -$280K ﹤0.01% 6281
2013
Q2
$244K Buy
+18,924
New +$176K ﹤0.01% 5434

Other funds holding PRTA

Bank of America's PRTA Position: Q1 2026 in Review

Bank of America reduced its Prothena Corp (PRTA) stake by 7.9% in Q1 2026, selling an estimated $309K and leaving 393,632 shares worth $3.83M. The position accounts for ﹤0.01% of the portfolio, ranked #3660.

Bank of America first reported a position in PRTA in Q2 2013 and has held it in 52 quarters since. The position peaked at $37.3M in Q2 2014. 185 funds tracked by Wall St. Rank hold PRTA as of Q1 2026.

  • Bank of America held 393,632 shares of Prothena Corp worth $3.83M as of Q1 2026.
  • Bank of America sold 33,728 Prothena Corp shares in Q1 2026, an estimated $309K.
  • Prothena Corp made up ﹤0.01% of Bank of America's portfolio in Q1 2026, its #3660 holding.
  • Bank of America first reported a position in Prothena Corp in Q2 2013 and has held it in 52 quarters since.
  • Bank of America's Prothena Corp position peaked at $37.3M in Q2 2014.
  • 185 funds tracked by Wall St. Rank held Prothena Corp as of Q1 2026.

Based on Bank of America's 13F filing for Q1 2026, filed 18 May 2026.