ABOSAcumen Pharmaceuticals, Inc. Common Stock

CSNasdaq (XNAS)·USD

Identity

Security key: 11195
Ticker: ABOS
Type: CS — Common Stock
Exchange: Nasdaq(XNAS)
Venue group: NASDAQ
Operating MIC: XNAS
Market: stocks
Locale: us
Currency: USD
Listed: 2021-07-01
Round lot: 100
Active: Yes
Last seen in a load: 2026-08-14 20:49
Vendor updated: 2026-08-13 06:09
Ticker root / suffix: ABOS

Detail

Enriched 2026-08-14 20:47

Market cap: $181,509,932.14
Shares outstanding (class): 72,227,580
Shares outstanding (weighted): 72,314,714
SIC: 2836 BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
Employees: 61
Location: NEWTON, MA
Homepage: https://www.acumenpharm.com
Description: Acumen Pharmaceuticals Inc is a clinical-stage biopharmaceutical company developing a novel disease-modifying approach to target what it believes to be a key underlying cause of Alzheimer's disease. The company's drug candidate, ACU193, is a subclass monoclonal antibody that selectively targets amyloid-beta oligomers. The product pipelines include: ALTITUDE-AD; and INTERCEPT-AD.

Market cap and share counts drift.

Funds holding this security

14 funds · 14 positions · $4.55M reported value, as of 2026-03-31

All holders →

Fund	Ticker	Position value	% of fund	Balance	Match
VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS	VTI	$2.64M	0.00%	1,118,322 NS	FIGI
VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS	VXF	$840.5K	0.00%	356,155 NS	FIGI
iShares Micro-Cap ETF iShares Trust	IWC	$229.2K	0.02%	97,119 NS	FIGI
VIP Health Care Portfolio Variable Insurance Products Fund IV	—	$225.4K	0.02%	95,526 NS	FIGI
Ultra-Small Company Market Fund Bridgeway Funds, Inc.	—	$207.4K	0.17%	87,871 NS	FIGI
Ultra-Small Company Fund Bridgeway Funds, Inc.	—	$177.0K	0.21%	75,000 NS	FIGI
Goldman Sachs Absolute Return Tracker Fund GOLDMAN SACHS TRUST	—	$92.7K	0.00%	39,288 NS	FIGI
VANGUARD BALANCED INDEX FUND VANGUARD VALLEY FORGE FUNDS	—	$62.1K	0.00%	26,300 NS	FIGI
JNL/DFA U.S. Small Cap Fund JNL Series Trust	—	$24.9K	0.00%	10,532 NS	FIGI
1290 VT Micro Cap Portfolio EQ Advisors Trust	—	$16.1K	0.01%	6,824 NS	FIGI
Blackstone Alternative Multi-Strategy Fund Blackstone Alternative Investment Funds	—	$13.5K	0.00%	5,700 NS	FIGI
VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX… VANGUARD INSTITUTIONAL INDEX FUNDS	—	$13.0K	0.00%	5,500 NS	FIGI
LVIP Dimensional U.S. Core Equity 2 Fund LINCOLN VARIABLE INSURANCE PRODUCTS TRUST	—	$6.5K	0.00%	2,758 NS	FIGI
Small Cap Core Fund Northern Funds	—	$2.1K	0.00%	903 NS	FIGI

How positions resolve to the securities master. FIGI_COMPOSITE is exact identifier equality — both sides got the FIGI from Bloomberg. TICKER is a narrow fallback used only where the master row carries no FIGI at all (2,389 rows do not, disproportionately Irish-domiciled US listings like LIN and ACN). Roughly 22% of all positions resolve to the master.

Funds holding this security

Identifiers

master.security_identifier

TICKERABOS
FIGI_COMPOSITEBBG0058YJ317
FIGI_SHARE_CLASSBBG0058YJ326
CIK0001576885
ISINUS00509G2093
Resolved through OpenFIGI from a holdings ISIN, not supplied by the securities vendor.

Identifiers

Classification

classification.v_security_classification

Asset class: Equity
Sector: Health Care
Industry: Biotechnology
Source: LLMunreviewed
Self-reported confidence: 0.95
Model: deepseek
Rationale: Acumen Pharmaceuticals is a biotech company focused on Alzheimer's disease treatments, fitting the biological products SIC code.

Classifications are unreviewed model output. All 5,771 assignments carry source = LLM and is_reviewed = false. Confidence is the model’s own estimate and is not calibrated — it clustered at 0.90–0.98 across the whole first pass, including rows that later proved wrong. Use it to order a review queue, not as a probability. Two share classes of one issuer can disagree.

Classification

Fund data

Not linked to a fund series.

Either this is not a fund, or it is one the SEC share-class snapshot cannot reach — commodity trusts and notes have no series ID at all.