ABOS · Insider trading · 13F holders · Congress trades
Acumen Pharmaceuticals Inc (ABOS)
Who is buying and selling ABOS: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 3
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
ABOS at a glance
- No open-market insider purchases or sales of ABOS were filed in the last 90 days.
- 3 13F filers hold ABOS among their 50 largest positions, worth $66.0M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Sands Capital Alternatives, LLC (1.6%), Peter Kolchinsky (0.5%) and Bronte Capital Management Pty Ltd. (0.0%).
- No member of Congress has disclosed a trade in ABOS.
ABOS insider trading
No open-market insider purchases or sales of ABOS were filed in the last 90 days.
Who owns ABOS? Hedge funds and superinvestors
3 13F filers hold ABOS among their 50 largest positions, worth $66.0M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Sands Capital Alternatives, LLC (1.6%), Peter Kolchinsky (0.5%) and Bronte Capital Management Pty Ltd. (0.0%).
Superinvestors holding ABOS: Peter Kolchinsky 0.5%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Peter KolchinskyHedge fund | 0.5% | $56.1M | 20,992,669 | +0.0% shares | Q2 2026 |
| Sands Capital Alternatives, LLCHedge fund | 1.6% | $9.9M | 3,720,105 | +0.0% shares | Q2 2026 |
| Bronte Capital Management Pty Ltd.Hedge fund | 0.0% | $29K | 10,716 | — | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 3). Screen ABOS in the grand portfolio →
ABOS stock trades by members of Congress
No member of Congress has disclosed a trade in ABOS.
ABOS questions and answers
Are insiders buying ABOS stock?
No open-market insider purchases or sales of ABOS were filed in the last 90 days.
Which hedge funds own ABOS?
3 13F filers hold ABOS among their 50 largest positions, worth $66.0M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Sands Capital Alternatives, LLC (1.6%), Peter Kolchinsky (0.5%) and Bronte Capital Management Pty Ltd. (0.0%).
Has Congress traded ABOS?
No member of Congress has disclosed a trade in ABOS.
Who is the largest holder of ABOS?
Among 13F filers, Peter Kolchinsky reports the largest ABOS position, $56.1M (20,992,669 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Sands Capital Alternatives, LLC's: 1.6% of its portfolio.
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