Acadian Asset Management LLC Prothena Corp Public LTD CO Transaction History

Acadian Asset Management LLC

$48.4 Billion
Q2 2025

A detailed history of Acadian Asset Management LLC transactions in Prothena Corp Public LTD CO stock. As of the latest transaction made, Acadian Asset Management LLC holds 1,018,177 shares of PRTA stock, worth $7.68 Million. This represents 0.01% of its overall portfolio holdings.

Number of Shares

1,018,177

Holding current value

$7.68 Million

% of portfolio

0.01%

15 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 07, 2025	BUY	$4.58 - $12.14 $4.66 Million - $12.4 Million	1,018,177 New	1,018,177 $6.18 Million
Q4 2024 Feb 11, 2025	BUY	$11.95 - $18.35 $54,551 - $83,767	4,565 New	4,565 $63,000
Q1 2022 May 12, 2022	SELL	$30.27 - $49.22 $240,979 - $391,840	-7,961 Closed	0 $0
Q4 2021 Feb 10, 2022	BUY	$42.11 - $73.26 $275,020 - $478,461	6,531 Added 456.71%	7,961 $393,000
Q3 2021 Nov 12, 2021	BUY	$48.2 - $78.89 $68,926 - $112,812	1,430 New	1,430 $101,000
Q2 2021 Aug 11, 2021	SELL	$21.63 - $57.65 $1.43 Million - $3.81 Million	-66,043 Closed	0 $0
Q1 2021 May 11, 2021	SELL	$11.0 - $28.24 $1.21 Million - $3.12 Million	-110,396 Reduced 62.57%	66,043 $1.66 Million
Q4 2020 Feb 11, 2021	SELL	$10.12 - $13.94 $339,809 - $468,077	-33,578 Reduced 15.99%	176,439 $2.12 Million
Q3 2020 Nov 09, 2020	SELL	$9.93 - $13.47 $158,274 - $214,698	-15,939 Reduced 7.05%	210,017 $2.1 Million
Q2 2020 Aug 12, 2020	BUY	$9.56 - $12.51 $150,111 - $196,432	15,702 Added 7.47%	225,956 $2.36 Million
Q1 2020 May 11, 2020	BUY	$7.54 - $15.77 $738,286 - $1.54 Million	97,916 Added 87.16%	210,254 $2.25 Million
Q4 2019 Feb 06, 2020	BUY	$7.48 - $17.01 $424,632 - $965,640	56,769 Added 102.16%	112,338 $1.78 Million
Q3 2019 Nov 07, 2019	SELL	$6.89 - $10.45 $71,986 - $109,181	-10,448 Reduced 15.83%	55,569 $435,000
Q2 2019 Aug 08, 2019	BUY	$8.85 - $12.49 $122,563 - $172,974	13,849 Added 26.55%	66,017 $697,000
Q1 2019 May 09, 2019	BUY	$10.32 - $14.49 $538,373 - $755,914	52,168 New	52,168 $633,000

Others Institutions Holding PRTA

# of Institutions

212

Shares Held

33.5M

Call Options Held

848K

Put Options Held

648K

View Full List

About PROTHENA CORP PUBLIC LTD CO

Ticker PRTA
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 46,922,800
Market Cap $354M
Description
Prothena Corporation plc, a late-stage clinical company, focuses on discovery and development of novel therapies for life-threatening diseases in the United States. The company is involved in developing Birtamimab, an investigational humanized antibody that is in Phase III clinical trial for the treatment of AL amyloidosis; Prasinezumab, a human...

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Acadian Asset Management LLC Prothena Corp Public LTD CO Transaction History