ABOS Acumen Pharmaceuticals, Inc.: institutional ownership and insider trading
101 funds reported holding $132M of Acumen Pharmaceuticals, Inc. in their latest 13F filings; in Q2 2026 funds net bought $4.67M, with 29 new positions and 17 funds selling out; over the last 12 months insiders bought $0 and sold $626K on the open market.
ABOS revenue and earnings
- Quarter ended Jun 30, 2026: revenue n/a, net income −$32.7M, EPS -0.45
- Quarter ended Mar 31, 2026: revenue n/a, net income −$20.7M, EPS -0.33
- Quarter ended Dec 31, 2025: revenue n/a, net income −$25.1M, EPS -0.40
- Quarter ended Sep 30, 2025: revenue n/a, net income −$26.5M, EPS -0.44
Famous investors holding ABOS
- Renaissance Technologies (Renaissance Technologies): $1.80M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $1.66M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $162K, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $136K, 0.0% of the portfolio
Largest institutional holders of ABOS
- RA CAPITAL MANAGEMENT, L.P. — $56.1M
- Sands Capital Alternatives, LLC — $9.93M
- BlackRock, Inc. (BLK) — $6.65M
- Alyeska Investment Group, L.P. — $6.55M
- FRANKLIN RESOURCES INC (BEN) — $6.15M
- ADAR1 Capital Management, LLC — $5.64M
- VANGUARD CAPITAL MANAGEMENT LLC — $4.46M
- Knollwood Investment Advisory, LLC — $4.35M
- VANGUARD GROUP INC — $3.49M
- GEODE CAPITAL MANAGEMENT, LLC — $3.05M
Recent ABOS insider trades
- Jun 17, 2026: Porter Derrell sold 32,300 shares ($75.4K)
- Jun 9, 2026: Fountain Nathan B sold 6,400 shares ($14.3K)
- Mar 6, 2026: Meisner Derek M sold 2,090 shares ($6.81K)
- Feb 27, 2026: Meisner Derek M sold 9,406 shares ($28.3K)
5%+ owners
- RA Capital Management, L.P.: 29.5% (Schedule 13D/A, filed Mar 17, 2026)
- James B. Murray Jr.: 5.0% (Schedule 13G, filed Apr 7, 2026)
Who owns the most ABOS stock?
The largest institutional holders of Acumen Pharmaceuticals, Inc. in the latest 13F filings are RA CAPITAL MANAGEMENT, L.P. ($56.1M), Sands Capital Alternatives, LLC ($9.93M), BlackRock, Inc. (BLK) ($6.65M).
Are insiders buying or selling ABOS?
Over the last 12 months insiders bought $0 and sold $626K of Acumen Pharmaceuticals, Inc. stock on the open market (SEC Form 4).
Which famous investors own ABOS?
Renaissance Technologies, Two Sigma, Izzy Englander, Ken Griffin.
Which ETFs hold ABOS?
1 ETFs and mutual funds hold it among their top 100 positions, including IBRN.