Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (ABOS)

Q: What does CUSIP 00509G209 represent in this 13F holders report?

CUSIP 00509G209 is the security identifier for ABOS - Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share used to aggregate holder disclosures.

Q: How many institutions held ABOS - Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share in Q3 2023?

64 institutional investors reported ABOS - Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share for Q3 2023. Use the holders table for investor-level position and value details.

CUSIP: 00509G209

Q3 2023 13F Holders as of 30 Sep 2023

Type / Class: Equity / Common Stock, $0.0001 par value per share
Shares outstanding: 72,227,200
Total 13F shares: 43,186,479
Share change: +17,196,296
Total reported value: $179,213,677
Put/Call ratio: 112%
Price per share: $4.15
Number of holders: 64
Value change: +$71,103,757
Number of buys: 47
Number of sells: 21

Quarterly Holders Quick Answers

What is CUSIP 00509G209?
CUSIP 00509G209 identifies ABOS - Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q4 2023
Previous quarter: Q2 2023

Recent filing periods for CUSIP 00509G209:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of ABOS - Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
RA CAPITAL MANAGEMENT, L.P.	13F	Company	14%	9,770,773	$46,997,418	—	30 Jun 2023	13F
Deep Track Capital, LP	13F	Company	5.4%	3,916,361	$18,837,696	—	30 Jun 2023	13F
Sands Capital Alternatives, LLC	13F	Company	4.7%	3,417,075	$16,436,131	—	30 Jun 2023	13F
Sands Capital Ventures Discovery Fund III, L.P.	3/4/5	10%+ Owner	— class O/S missing	3,417,075	$11,859,300	—	06 Jul 2021	3/4/5
Knollwood Investment Advisory, LLC	13F	Company	2.3%	1,678,510	$8,073,633	—	30 Jun 2023	13F
Laurion Capital Management LP	13F	Company	1.7%	1,206,548	$5,803,496	—	30 Jun 2023	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	1.6%	1,146,018	$5,512,347	—	30 Jun 2023	13F
GREAT POINT PARTNERS LLC	13F	Company	1.5%	1,051,267	$5,056,594	—	30 Jun 2023	13F
VANGUARD GROUP INC	13F	Company	1%	734,852	$3,534,638	—	30 Jun 2023	13F
Ikarian Capital, LLC	13F	Company	0.91%	654,945	$3,150,286	—	30 Jun 2023	13F
BlackRock Finance, Inc.	13F	Company	0.67%	483,324	$2,324,789	—	30 Jun 2023	13F
Paul B. Manning	3/4/5	10%+ Owner	— class O/S missing	657,985	$2,283,603	—	06 Jul 2021	3/4/5
Robert D. Hardie	3/4/5	10%+ Owner	— class O/S missing	657,985	$2,283,603	—	06 Jul 2021	3/4/5
PATHSTONE FAMILY OFFICE, LLC	13F	Company	0.65%	467,060	$2,246,559	—	30 Jun 2023	13F
Hudson Bay Capital Management LP	13F	Company	0.55%	395,000	$1,899,950	—	30 Jun 2023	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.23%	166,820	$802,404	—	30 Jun 2023	13F
BRIDGEWAY CAPITAL MANAGEMENT, LLC	13F	Company	0.2%	142,833	$687,027	—	30 Jun 2023	13F
BOOTHBAY FUND MANAGEMENT, LLC	13F	Company	0.18%	127,106	$611,380	—	30 Jun 2023	13F
WMS Partners, LLC	13F	Company	0.14%	98,301	$472,828	—	30 Jun 2023	13F
CATALYST FINANCIAL PARTNERS LLC	13F	Company	0.12%	89,699	$431,452	—	30 Jun 2023	13F
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)	13F	Company	0.11%	79,538	$382,578	—	30 Jun 2023	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.1%	68,979	$331,789	—	30 Jun 2023	13F
J. Goldman & Co LP	13F	Company	0.09%	62,986	$302,963	—	30 Jun 2023	13F
D. E. Shaw & Co., Inc.	13F	Company	0.08%	60,504	$291,024	—	30 Jun 2023	13F
STATE STREET CORP	13F	Company	0.08%	59,778	$287,532	—	30 Jun 2023	13F
CITADEL ADVISORS LLC	13F	Company	0.07%	47,394	$227,965	—	30 Jun 2023	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.06%	44,800	$215,000	—	30 Jun 2023	13F
GROUP ONE TRADING LLC	13F	Company	0.05%	32,800	$157,768	—	30 Jun 2023	13F
NORTHERN TRUST CORP	13F	Company	0.04%	32,094	$154,372	—	30 Jun 2023	13F
PRELUDE CAPITAL MANAGEMENT, LLC	13F	Company	0.04%	31,100	$149,591	—	30 Jun 2023	13F
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	0.04%	30,222	$145,368	—	30 Jun 2023	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.04%	26,635	$128,114	—	30 Jun 2023	13F
BARCLAYS PLC	13F	Company	0.04%	25,394	$122,144	—	30 Jun 2023	13F
Intrepid Financial Planning Group LLC	13F	Company	0.03%	20,150	$96,922	—	30 Jun 2023	13F
PINNACLE ASSOCIATES LTD	13F	Company	0.02%	18,020	$86,676	—	30 Jun 2023	13F
Pinnacle Wealth Management Advisory Group, LLC	13F	Company	0.02%	18,020	$86,676	—	30 Jun 2023	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.02%	15,743	$75,723	—	30 Jun 2023	13F
MORGAN STANLEY	13F	Company	0.02%	15,324	$73,710	—	30 Jun 2023	13F
LMR Partners LLP	13F	Company	0.02%	14,663	$70,529	—	30 Jun 2023	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.02%	13,572	$65,281	—	30 Jun 2023	13F
Cubist Systematic Strategies, LLC	13F	Company	0.02%	13,116	$63,088	—	30 Jun 2023	13F
Belvedere Trading LLC	13F	Company	0.02%	12,931	$62,198	—	30 Jun 2023	13F
BIT Capital GmbH	13F	Company	0.02%	11,618	$55,883	—	30 Jun 2023	13F
Squarepoint Ops LLC	13F	Company	0.01%	10,445	$50,240	—	30 Jun 2023	13F
SIMPLEX TRADING, LLC	13F	Company	0.01%	4,546	$21,000	—	30 Jun 2023	13F
Tower Research Capital LLC (TRC)	13F	Company	0%	3,575	$17,196	—	30 Jun 2023	13F
WELLS FARGO & COMPANY/MN	13F	Company	0%	2,101	$10,105	—	30 Jun 2023	13F
JPMORGAN CHASE & CO	13F	Company	0%	1,275	$6,133	—	30 Jun 2023	13F
Cutler Group LLC / CA	13F	Company	0%	1,420	$6,000	—	30 Jun 2023	13F
Kelly Financial Services LLC	13F	Company	0%	944	$4,542	—	30 Jun 2023	13F

Institutional Holders of Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (ABOS) as of Q3 2023

As of 30 Sep 2023, Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (ABOS) was held by 64 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 43,186,479 shares. The largest 10 holders included RA CAPITAL MANAGEMENT, L.P., Sands Capital Ventures, LLC, FRANKLIN RESOURCES INC, Rock Springs Capital Management LP, Deep Track Capital, LP, Boxer Capital, LLC, Laurion Capital Management LP, VANGUARD GROUP INC, MILLENNIUM MANAGEMENT LLC, and Knollwood Investment Advisory, LLC. This page lists 64 institutional shareholders reporting positions in this security for the Q3 2023 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q3 2023 vs Q2 2023 Across Filers

Q2 2023 holders

Q3 2023 holders

Holder diff

Investor	Q2 2023 Shares	Q3 2023 Shares	Share Diff	Share Chg %	Q2 2023 Value $	Q3 2023 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.