Prothena

PRTA

8.4203.22% ( -0.280 )

Trading: Jul 28, 14:06:35 (EDT)

PRTA

8.4203.22% ( -0.280 )

Trading: Jul 28, 14:06:35 (EDT)

Major Shareholders Latest
Shareholder
FMR LLC	14.42%	7.55M	0.40%	+0	03/31/2026
William Scully	10.31%	5.40M	0.36%	+117.00K	06/16/2026
Rubric Capital Management LP	9.55%	5.00M	2.72%	+1.32M	03/31/2026
BlackRock, Inc.	8.87%	4.64M	1.24%	+536.70K	03/31/2026
Todd Fennell	8.59%	4.50M	0.24%	+0	09/30/2025
State Street Global Advisors, Inc.	3.70%	1.94M	0.51%	-329.30K	03/31/2026
D. E. Shaw & Co., L.P.	3.37%	1.76M	0.24%	+81.98K	03/31/2026
ADAR1 Capital Management, LLC	3.02%	1.58M	0.31%	+123.68K	03/31/2026
Acadian Asset Management LLC	2.96%	1.55M	0.29%	+110.24K	03/31/2026
Vanguard Portfolio Management, LLC	2.76%	1.45M	--	+1.45M	03/31/2026
Palo Alto Investors LP	2.31%	1.21M	0.14%	-111.94K	03/31/2026
Two Sigma Investments, LP	2.30%	1.21M	1.06%	+535.84K	03/31/2026
Geode Capital Management, LLC	2.10%	1.10M	0.12%	+35.10K	03/31/2026
Federated Hermes, Inc.	2.02%	1.06M	0.21%	+85.48K	03/31/2026
Morgan Stanley	1.99%	1.04M	0.03%	-13.15K	03/31/2026
Jacobs Levy Equity Management Inc	1.86%	972.02K	0.04%	-5.99K	03/31/2026
Dimensional Fund Advisors LP	1.49%	782.60K	0.05%	+7.40K	03/31/2026
Teachers Insurance and Annuity Association-College Retirement Equities Fund	1.44%	755.64K	0.04%	+261.00	03/31/2026
The Goldman Sachs Group, Inc.	1.40%	730.54K	0.17%	-109.69K	03/31/2026
Qube Research & Technologies Ltd	1.17%	614.60K	0.42%	+206.91K	03/31/2026

All Shareholders