MARSHALL WACE, LLP

Position in ABOS — Acumen Pharmaceuticals, Inc.

CIK 1318757 LONDON, X0

Position in ABOS

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$455,217

+$411,105 QoQ

Shares Held

192,889

+822.6% QoQ

Ownership

0.267%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#23

of 84 holders

Holding Since

Sep 2021

9 quarters on record

Voting authority Sole 0.ToString("F0")% Shared 100.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

MARSHALL WACE, LLP holds $2,749,797,393 across 275 Biotechnology names. ABOS ranks #226 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ALNY	Alnylam Pharmaceuticals, Inc.	1,099,318	$363,731,344
2	VRTX	Vertex Pharmaceuticals Inc / Ma	317,058	$141,579,078
3	INCY	Incyte Corp	1,253,138	$117,945,347
4	RPRX	Royalty Pharma plc	2,120,692	$101,729,594
5	RCUS	Arcus Biosciences, Inc.	3,761,437	$81,247,039
6	PTGX	Protagonist Therapeutics, Inc	628,075	$66,199,104
7	ROIV	Roivant Sciences Ltd.	2,246,943	$62,240,320
8	COGT	Cogent Biosciences, Inc.	1,600,168	$61,590,466

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$455,217	192,889	+822.6%	Shares	Other	2026-05-15
2025-12-31	$44,112	20,907	-84.8%	Shares	Other	2026-02-13
2025-06-30	$160,013	137,943	+53.8%	Shares	Other	2025-08-13
2024-03-31	$363,313	89,707	+251.9%	Shares	Other	2024-05-15
2023-09-30	$105,791	25,492	+35.5%	Shares	Other	2023-11-14
2022-06-30	$88,397	18,808	-42.7%	Shares	Other	2022-08-15
2022-03-31	$128,345	32,825	-79.0%	Shares	Other	2022-05-16
2021-12-31	$1,056,250	156,250	0.0%	Shares	Other	2022-02-14
2021-09-30	$2,321,875	156,250	—	Shares	Sole	2021-11-15
No filing history on record for this holder in this stock.