Prothena (PRTA) Shareholding Patterns

Stock Card

$8.54

$0.16 (1.91%)

As on 01-Oct-2026 16:00EDT

Market cap

$426 Mln

Revenue (TTM)

$55 Mln

P/E Ratio

P/B Ratio

1.6

Div. Yield

0 %

Annual
Quarterly

Shareholding Pattern

Shareholder's Name	Category	Holding (% of equity)	Change in shares (%)	Filing date
EcoR1 Capital, LLC	Institutions	21.96	0.00	31-Mar-2023
T. Rowe Price Associates, Inc.	Institutions	6.07	-0.11	31-Mar-2023
State Street Corporation	Institutions	3.99	2.46	31-Mar-2023
Palo Alto Investors, LLC	Institutions	3.15	0.31	31-Mar-2023
HHG PLC	Institutions	3.03	11.45	31-Mar-2023
First Light Asset Management, LLC	Institutions	2.86	-1.59	31-Mar-2023
Dimensional Fund Advisors, Inc.	Institutions	2.34	-6.65	31-Mar-2023
Avidity Partners Management LP	Institutions	2.03	-63.83	31-Mar-2023
Vanguard Group Inc	Institutions	1.79	8.55	31-Mar-2023
T. Rowe Price Investment Management,Inc.	Institutions	1.73	-1.43	31-Mar-2023
Partner Fund Management LP	Institutions	1.47	-11.53	31-Mar-2023
Rock Springs Capital Management LP	Institutions	1.43	0.00	31-Mar-2023
FMR Inc	Institutions	7.48	24.82	31-Dec-2022
BlackRock Inc	Institutions	6.61	11.03	31-Dec-2022
Wellington Management Company LLP	Institutions	3.35	309.00	31-Dec-2022
Geode Capital Management, LLC	Institutions	1.36	12.56	31-Dec-2022
Nuveen Asset Management, LLC	Institutions	1.09	16.79	31-Dec-2022
FMR Inc	Institutions	6.02	8.10	30-Sep-2022
Geode Capital Management, LLC	Institutions	1.21	0.64	30-Sep-2022
EcoR1 Capital, LLC	Institutions	24.69	0.00	30-Jun-2022
T. Rowe Price Associates, Inc.	Institutions	12.71	-2.42	30-Jun-2022
FMR Inc	Institutions	6.23	9.34	30-Jun-2022
State Street Corporation	Institutions	4.79	-5.13	30-Jun-2022
First Light Asset Management, LLC	Institutions	4.13	5.42	30-Jun-2022
Palo Alto Investors, LLC	Institutions	3.58	0.00	30-Jun-2022
Dimensional Fund Advisors, Inc.	Institutions	3.34	4.09	30-Jun-2022
Vanguard Group Inc	Institutions	1.77	-5.28	30-Jun-2022
Redmile Group, LLC	Institutions	1.57	0.00	30-Jun-2022
Nuveen Asset Management, LLC	Institutions	1.54	-0.11	30-Jun-2022
Renaissance Technologies Corp	Institutions	1.46	74.02	30-Jun-2022
Rock Springs Capital Management LP	Institutions	1.45	2.25	30-Jun-2022
Geode Capital Management, LLC	Institutions	1.35	-3.11	30-Jun-2022
Prosight Management, LP	Institutions	1.17	-2.92	30-Jun-2022
BlackRock Inc	Institutions	8.27	2.72	31-Dec-2021
Nuveen Asset Management, LLC	Institutions	1.03	6.53	30-Sep-2021
BlackRock Inc	Institutions	7.90	2.53	30-Jun-2021

Date	Person	Buy / Sell	Transaction Type	No. of Shares	Price ($)	Value ($ K)
31-Dec-2024	William P Scully	Buy	Market	2,460	13.01	32.00
20-Dec-2024	William P Scully	Buy	Market	126	15.91	2.00
18-Dec-2024	William P Scully	Buy	Market	5,272	13.93	73.44
24-Jan-2024	Karin L. Walker	Sell	Market	147	34.00	5.00
24-Jan-2024	Karin L. Walker	Sell	Market	147	34.00	5.00

Prothena (PRTA) Shareholding Patterns

Shareholding Pattern

Shareholders more than 1%

Insider Trades