JACOBS LEVY EQUITY MANAGEMENT, INC

Position in PRTA — Prothena Corp Public Ltd Co

CIK 884414 FLORHAM PARK, NJ

Position in PRTA

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$9,457,022

+$9,017 QoQ

Shares Held

965,988

-0.6% QoQ

Ownership

1.88%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

#15

of 187 holders

Holding Since

Mar 2020

13 quarters on record

Voting authority Sole 80% Shared 0% None 20%

Healthcare · as of Jun 30, 2026

JACOBS LEVY EQUITY MANAGEMENT, INC holds $741,570,791 across 81 Biotechnology names. PRTA ranks #16 (1.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	REGN	Regeneron Pharmaceuticals, Inc.	256,503	$159,939,880
2	RARE	Ultragenyx Pharmaceutical Inc.	2,939,719	$98,157,217
3	INCY	Incyte Corp	731,774	$82,953,900
4	CORT	Corcept Therapeutics Inc	695,532	$60,476,507
5	HALO	Halozyme Therapeutics, Inc.	322,377	$25,232,447
6	EXEL	Exelixis, Inc.	415,650	$22,615,516
7	AUPH	Aurinia Pharmaceuticals Inc.	1,231,516	$20,898,826
8	ALNY	Alnylam Pharmaceuticals, Inc.	60,986	$18,358,615

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$9,457,022	965,988	-0.6%	Shares	Sole	2026-08-14
2026-03-31	$9,448,005	972,017	-0.6%	Shares	Sole	2026-05-15
2025-12-31	$9,340,005	978,011	+11.6%	Shares	Sole	2026-02-13
2025-09-30	$8,554,913	876,528	+26.5%	Shares	Sole	2025-11-17
2025-06-30	$4,207,444	693,154	+3636.1%	Shares	Sole	2025-08-14
2025-03-31	$229,593	18,553	-89.5%	Shares	Sole	2025-05-15
2021-12-31	$8,758,323	177,294	+310.1%	Shares	Sole	2022-02-14
2021-09-30	$3,079,059	43,227	-86.2%	Shares	Sole	2021-11-15
2021-03-31	$7,883,937	313,851	-0.6%	Shares	Sole	2021-05-17
2020-12-31	$3,792,649	315,791	-0.8%	Shares	Sole	2021-02-16
2020-09-30	$3,179,856	318,304	-4.4%	Shares	Sole	2020-11-16
2020-06-30	$3,482,332	332,919	+0.1%	Shares	Sole	2020-08-17
2020-03-31	$3,560,061	332,716	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.