RENAISSANCE TECHNOLOGIES LLC

Position in ABOS — Acumen Pharmaceuticals, Inc.

CIK 1037389 NEW YORK, NY

Position in ABOS

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$1,118,512

+$225,771 QoQ

Shares Held

473,946

+12.0% QoQ

Ownership

0.656%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#17

of 84 holders

Holding Since

Dec 2021

13 quarters on record

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

Healthcare · as of Mar 31, 2026

RENAISSANCE TECHNOLOGIES LLC holds $3,447,997,584 across 326 Biotechnology names. ABOS ranks #179 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	EXEL	Exelixis, Inc.	13,726,993	$588,750,729
2	INCY	Incyte Corp	3,651,532	$343,682,191
3	CORT	Corcept Therapeutics Inc	5,682,783	$229,072,982
4	VRTX	Vertex Pharmaceuticals Inc / Ma	421,688	$188,300,559
5	JAZZ	Jazz Pharmaceuticals plc	819,374	$154,902,654
6	GMAB	Genmab A/S	4,414,550	$118,442,376
7	INVA	Innoviva, Inc.	4,055,632	$94,496,225
8	ARWR	Arrowhead Pharmaceuticals, Inc.	1,036,495	$64,988,236

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,118,512	473,946	+12.0%	Shares	Sole	2026-05-14
2025-12-31	$892,741	423,100	-27.6%	Shares	Sole	2026-02-12
2025-09-30	$999,139	584,292	+137.0%	Shares	Sole	2025-11-13
2025-06-30	$286,042	246,588	-3.9%	Shares	Sole	2025-08-13
2025-03-31	$282,370	256,700	-0.2%	Shares	Sole	2025-05-14
2024-12-31	$442,406	257,213	-16.0%	Shares	Sole	2025-02-13
2024-09-30	$759,128	306,100	-9.5%	Shares	Sole	2024-11-13
2024-06-30	$818,202	338,100	+286.8%	Shares	Sole	2024-08-09
2023-09-30	$362,710	87,400	+95.1%	Shares	Sole	2023-11-14
2023-06-30	$215,488	44,800	+19.6%	Shares	Sole	2023-08-11
2023-03-31	$152,026	37,445	+15.9%	Shares	Sole	2023-05-12
2022-12-31	$174,420	32,300	+49.5%	Shares	Sole	2023-02-13
2021-12-31	$146,076	21,609	—	Shares	Sole	2022-02-11
No filing history on record for this holder in this stock.