CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Position in ABOS — Acumen Pharmaceuticals, Inc.

CIK 884546 SAN FRANCISCO, CA

Position in ABOS

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

Position Value

$307,314

+$178,722 QoQ

Shares Held

115,099

-1.5% QoQ

Ownership

0.159%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#29

of 96 holders

Holding Since

Sep 2021

8 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $7,346,663,053 across 299 Biotechnology names. ABOS ranks #277 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	2,041,282	$1,013,966,007
2	REGN	Regeneron Pharmaceuticals, Inc.	846,306	$527,705,642
3	RVMD	Revolution Medicines, Inc.	1,917,025	$359,020,441
4	MRNA	Moderna, Inc.	4,838,884	$338,867,045
5	ALNY	Alnylam Pharmaceuticals, Inc.	755,377	$227,391,137
6	INCY	Incyte Corp	1,692,439	$191,854,884
7	RPRX	Royalty Pharma plc	3,083,528	$172,893,414
8	CYTK	Cytokinetics Inc	1,565,781	$133,388,883

8 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$307,314	115,099	-1.5%	Shares	Sole	2026-08-14
2025-03-31	$128,592	116,902	-7.8%	Shares	Sole	2025-09-15
2024-12-31	$218,004	126,747	+16.6%	Shares	Sole	2025-02-06
2024-09-30	$269,682	108,743	0.0%	Shares	Sole	2024-11-12
2024-06-30	$263,158	108,743	+71.9%	Shares	Sole	2024-08-12
2022-03-31	$247,311	63,251	+163.1%	Shares	Sole	2022-05-13
2021-12-31	$162,490	24,037	0.0%	Shares	Sole	2022-02-11
2021-09-30	$357,189	24,037	—	Shares	Sole	2021-11-16
No filing history on record for this holder in this stock.