Acumen Pharmaceuticals, Inc. (ABOS) is held by institutional investors who disclose positions via SEC 13F filings. View the full list of institutional holders on HoldingsIntel.

Are institutions buying or selling ABOS?

HoldingsIntel tracks quarter-over-quarter changes in institutional positions for Acumen Pharmaceuticals, Inc., showing new buyers, position increases, decreases, and exits with conviction-weighted sentiment.

What is the Smart Money Verdict on ABOS?

The Smart Money Verdict combines four independent signals (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for Acumen Pharmaceuticals, Inc..

Is institutional money flowing into ABOS?

42 institutional investors hold Acumen Pharmaceuticals, Inc. (ABOS). View detailed buyer/seller breakdown on HoldingsIntel.

What do hedge funds think about ABOS?

Track institutional sentiment and conviction scores for Acumen Pharmaceuticals, Inc. (ABOS) including Smart Money Verdict and position changes on HoldingsIntel.

Acumen Pharmaceuticals, Inc.

ABOS·00509G209·US·equity·Healthcare - Biotechnology-Activist

ABOS (Acumen Pharmaceuticals, Inc.) is held by 42 institutional investors as of Q4 2025. Largest holders: RA CAPITAL MANAGEMENT, L.P. ($31.5M), FRANKLIN RESOURCES INC ($4.9M), FMR LLC ($4.3M). Net institutional sentiment: Mixed.

Holders

Avg rating(2 Elite)

$58.1M

Total Value

43% (47)

Fund Consensus

16 buying - 21 selling

Smart Money VerdictView all

51Mixed MomentumSplit Signals

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See how ABOS's score breaks down across 4 SEC sources

Held by 42 funds

2 elite

Who's Trading

ActivistJames B. Murray Jr.5.0%Apr 7, 2026

13F: Dec 31, 2025Insider & Congress: Updated regularly

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
RA CAPITAL MANAGEMENT, L.P.	Unchanged	14.9M	$31.5M	0.3%	-70.32%	0
FRANKLIN RESOURCES INC	Unchanged	2.3M	$4.9M	0.0%	-17.63%	0
FMR LLC	Decreased	2M(-0.1%)	$4.3M	0.0%	+89.34%	0
VANGUARD GROUP INC	Increased	1.7M(+0.1%)	$3.5M	0.0%	+33.64%	26
Alyeska Investment Group, L.P.	Unchanged	939,603	$2M	0.0%	-19.04%	0
Pathstone Holdings, LLC	Unchanged	859,110	$1.8M	0.0%	+35.02%	0
Hudson Bay Capital Management LP	Decreased	725,000	$1.5M	0.0%	-9.31%	0
MILLENNIUM MANAGEMENT LLC	Decreased	584,143(-2.9%)	$1.2M	0.0%	+9.16%	0
RENAISSANCE TECHNOLOGIES LLC	Decreased	423,100(-27.6%)	$892,741	0.0%	+71.10%	0
TWO SIGMA ADVISERS, LP	Decreased	421,800(-0.4%)	$889,998	0.0%	+8.33%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	410,206(+2.9%)	$865,686	0.0%	-12.03%	26
SUSQUEHANNA INTERNATIONAL GROUP, LLP	Increased	373,198(+74.0%)	$787,448	0.0%	+63.53%	37
CITADEL ADVISORS LLC	Decreased	345,283(-30.1%)	$728,547	0.0%	+109.49%	0
BANK OF AMERICA CORP /DE/	Increased	240,152(+12.4%)	$506,720	0.0%	+93.78%	18
BlackRock, Inc.	Decreased	169,505(-3.0%)	$357,655	0.0%	+89.14%	0
MORGAN STANLEY	Increased	166,905(+11.7%)	$352,169	0.0%	+41.61%	18
TWO SIGMA INVESTMENTS, LP	Decreased	143,221(-28.2%)	$302,196	0.0%	-2.84%	0
JANE STREET GROUP, LLC	Decreased	142,123(-31.4%)	$299,879	0.0%	+150.08%	0
GOLDMAN SACHS GROUP INC	Decreased	117,851(-19.9%)	$248,666	0.0%	+122.25%	0
STATE STREET CORP	Decreased	100,178(-6.1%)	$211,376	0.0%	+25.47%	0
NORTHERN TRUST CORP	Increased	75,212(+15.8%)	$158,697	0.0%	+9.69%	18
XTX Topco Ltd	New	49,563	$104,578	0.0%	+65.50%	30
DIMENSIONAL FUND ADVISORS LP	Increased	49,062(+12.7%)	$103,520	0.0%	+11.00%	17
Quadrature Capital Ltd	New	49,046	$103,487	0.0%	+65.50%	30
Qube Research & Technologies Ltd	Increased	47,985(+45.9%)	$101,248	0.0%	+56.15%	30
Point72 Asset Management, L.P.	New	36,365	$76,730	0.0%	+65.50%	29
BARCLAYS PLC	Unchanged	29,991	$63,281	0.0%	+5.73%	0
OMERS ADMINISTRATION Corp	New	22,454	$47,378	0.0%	+65.50%	28
UBS Group AG	Decreased	21,562(-30.1%)	$45,496	0.0%	+70.75%	0
MARSHALL WACE, LLP	New	20,907	$44,114	0.0%	+65.50%	31
Virtu Financial LLC	New	10,922	$23,000	0.0%	+65.50%	26
WELLS FARGO & COMPANY/MN	Increased	7,100(+9.2%)	$14,981	0.0%	+45.64%	13
OSAIC HOLDINGS, INC.	Decreased	6,851(-5.5%)	$14,455	0.0%	+26.12%	0
GROUP ONE TRADING LLC	Decreased	4,752(-39.1%)	$10,027	0.0%	+108.50%	0
PNC FINANCIAL SERVICES GROUP, INC.	Unchanged	3,080	$6,499	0.0%	+179.82%	0
Rockefeller Capital Management L.P.	Unchanged	3,000	$6,330	0.0%	+109.49%	0
ROYAL BANK OF CANADA	Increased	2,282(+103.8%)	$5,000	0.0%	+77.38%	17
JPMORGAN CHASE & CO	Decreased	2,409(-20.6%)	$4,216	0.0%	+89.14%	0
NISA INVESTMENT ADVISORS, LLC	Unchanged	1,229	$2,593	0.0%	+195.54%	0
BNP PARIBAS FINANCIAL MARKETS	Unchanged	1,224	$2,583	0.0%	+89.14%	0
Farther Finance Advisors, LLC	Unchanged	200	$422	0.0%	+195.54%	0
Optiver Holding B.V.	Decreased	5(-16.7%)	$11	0.0%	+109.49%	0
JACOBS LEVY EQUITY MANAGEMENT, INC	Exited	0(-100.0%)	$27,362	0.0%	+26.58%	0
Integrated Wealth Concepts LLC	Exited	0(-100.0%)	$17,406	0.0%	+28.07%	0
HRT FINANCIAL LP	Exited	0(-100.0%)	$23	0.0%	+78.57%	0
CITIGROUP INC	Exited	0(-100.0%)	$258	0.0%	+14.29%	0
Savant Capital, LLC	Exited	0(-100.0%)	$18,887	0.0%	+26.58%	0

Acumen Pharmaceuticals, Inc.

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