PROTHENA CORP PUBLIC LTD CO - Ordinary Shares, par value $0.01 per share (PRTA)

Historical Holders from Q1 2014 to Q3 2025

Symbol
PRTA on Nasdaq
CUSIP
G72800108
Type / Class
Equity / Ordinary Shares, par value $0.01 per share
Shares outstanding
54.4M
All holders as of September 30, 2025
Q3 2025
Total 13F shares, excl. options
42.6M
Holdings value
$416M
% of all portfolios
0.002%
Grand Portfolio weight change
+0%
Number of holders
185
Number of buys
86
Number of sells
-95
Average Value change %
0%
Average buys %
+0%
Average sells %
-0.001%
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of PROTHENA CORP PUBLIC LTD CO - Ordinary Shares, par value $0.01 per share (PRTA)

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
SCULLY WILLIAM P 9.8% -1% $51.6M -$683K 5.28M -1.31% SCULLY WILLIAM P Sep 30, 2025
Fennell Todd W. 8.4% +3.75% $43.9M $1.42M 4.5M +3.33% Fennell Todd W. Sep 30, 2025
BlackRock, Inc. 5.7% $30.2M 3.09M BlackRock, Inc. Sep 30, 2025
ADAR1 Capital Management, LLC 2.7% -60% $14.3M -$18.6M 1.47M -56.5% ADAR1 Capital Management, LLC Sep 30, 2025
WELLINGTON MANAGEMENT GROUP LLP 0.2% -93% $821K -$38.1M 108K -97.9% Wellington Management Group LLP May 30, 2025
PRICE T ROWE ASSOCIATES INC /MD/ 0.1% $449K 71K T. Rowe Price Associates, Inc. Jun 30, 2025

Institutional Holders of PROTHENA CORP PUBLIC LTD CO - Ordinary Shares, par value $0.01 per share (PRTA)

Period Reported Shares, Excl. Options Value, Excl. Options Change Price Investors
2025 Q3 42.6M $416M +$14M $9.76 185
2025 Q2 41.8M $254M -$154M $6.07 189
2025 Q1 52.3M $647M -$15.4M $12.38 158
2024 Q4 53.5M $741M +$20.8M $13.85 168
2024 Q3 50.8M $850M -$25M $16.73 160
2024 Q2 50.8M $1.05B -$58.4M $20.64 159
2024 Q1 53.4M $1.32B -$24.4M $24.77 164
2023 Q4 53.6M $1.95B -$5.94M $36.34 191
2023 Q3 52.9M $2.55B +$22.8M $48.25 187
2023 Q2 51.7M $3.53B +$12.7M $68.28 195
2023 Q1 51.9M $2.51B +$112M $48.47 190
2022 Q4 49.4M $2.98B +$297M $60.25 201
2022 Q3 44.4M $2.69B -$50.2M $60.63 175
2022 Q2 44.5M $1.21B +$9.5M $27.15 148
2022 Q1 44.1M $1.61B +$36M $36.57 159
2021 Q4 42.8M $2.12B +$71.2M $49.40 178
2021 Q3 40.9M $2.92B +$43.6M $71.23 178
2021 Q2 40.4M $2.08B +$59.1M $51.41 146
2021 Q1 40M $1B +$172M $25.12 136
2020 Q4 34.8M $418M -$14.4M $12.01 125
2020 Q3 36.2M $362M -$14.7M $9.99 123
2020 Q2 37.7M $394M +$5.5M $10.46 122
2020 Q1 37.2M $398M +$362K $10.70 112
2019 Q4 36.9M $584M -$14.8M $15.83 118
2019 Q3 37.5M $294M -$35.5M $7.84 103
2019 Q2 38.7M $409M -$3.32M $10.57 115
2019 Q1 39.6M $480M -$5.2M $12.13 113
2018 Q4 40.2M $414M -$11M $10.30 94
2018 Q3 40.7M $532M -$19.2M $13.08 107
2018 Q2 41.8M $610M -$64.3M $14.58 102
2018 Q1 42.2M $1.55B -$42.5M $36.71 129
2017 Q4 43.3M $1.62B -$24.1M $37.49 137
2017 Q3 43.1M $2.79B +$48.5M $64.77 139
2017 Q2 42.5M $2.3B +$50.5M $54.12 132
2017 Q1 41.6M $2.32B +$353M $55.79 135
2016 Q4 37.9M $1.86B +$78.3M $49.19 129
2016 Q3 36.2M $2.17B +$91.5M $59.97 124
2016 Q2 34.7M $1.21B -$16.8M $34.96 121
2016 Q1 35M $1.44B +$168M $41.16 124
2015 Q4 30.1M $2.05B -$251K $68.11 144
2015 Q3 30.1M $1.36B +$28.5M $45.34 130
2015 Q2 29.4M $1.55B +$216M $52.67 124
2015 Q1 25.4M $968M +$43.3M $38.14 106
2014 Q4 24.8M $516M -$1.72M $20.76 106
2014 Q3 21.5M $476M -$16.5M $22.16 107
2014 Q2 22.3M $502M -$53.6M $22.55 113
2014 Q1 20.7M $793M +$190M $38.31 104