Trexquant Investment LP

Position in PRTA — Prothena Corp Public Ltd Co

CIK 1633445 STAMFORD, CT

Position in PRTA

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

Position Value

$751,196

+$512,639 QoQ

Shares Held

76,731

+212.6% QoQ

Ownership

0.149%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#53

of 187 holders

Holding Since

Jun 2020

13 quarters on record

Voting authority Sole 91% Shared 0% None 9%

Healthcare · as of Jun 30, 2026

Trexquant Investment LP holds $587,455,425 across 144 Biotechnology names. PRTA ranks #119 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MRNA	Moderna, Inc.	505,160	$35,376,354
2	REGN	Regeneron Pharmaceuticals, Inc.	41,839	$26,088,290
3	RVMD	Revolution Medicines, Inc.	120,122	$22,496,448
4	AXSM	Axsome Therapeutics, Inc.	83,679	$20,482,108
5	RARE	Ultragenyx Pharmaceutical Inc.	556,385	$18,577,695
6	INSM	INSMED Inc	156,553	$16,691,680
7	SRRK	Scholar Rock Holding Corp	275,712	$15,164,160
8	EXEL	Exelixis, Inc.	275,209	$14,974,121

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$751,196	76,731	+212.6%	Shares	Sole	2026-08-14
2026-03-31	$238,557	24,543	+26.6%	Shares	Sole	2026-05-15
2025-12-31	$185,117	19,384	-93.1%	Shares	Sole	2026-02-17
2025-09-30	$2,722,835	278,979	-49.5%	Shares	Sole	2025-11-14
2025-06-30	$3,355,653	552,826	+716.8%	Shares	Sole	2025-08-12
2023-12-31	$2,459,600	67,683	+19.1%	Shares	Sole	2024-02-09
2023-09-30	$2,742,674	56,843	+34.7%	Shares	Sole	2023-11-13
2023-03-31	$2,045,434	42,200	+35.1%	Shares	Sole	2023-05-15
2022-12-31	$1,882,029	31,237	+432.5%	Shares	Sole	2023-02-13
2021-12-31	$289,780	5,866	-19.9%	Shares	Sole	2022-02-14
2021-06-30	$376,629	7,326	-84.4%	Shares	Sole	2021-08-12
2020-09-30	$469,919	47,039	-13.1%	Shares	Sole	2020-11-06
2020-06-30	$566,314	54,141	—	Shares	Sole	2020-08-07
No filing history on record for this holder in this stock.