ABOS
Acumen Pharmaceuticals, Inc.Closed1.82−0.21 −10.15%USD
NasdaqGS · as of Oct 13, 16:00 ET · 15m delayAfter hours 1.84 +1.38%
Open
2.00
Prev close
2.02
Day range
1.812.00
52-week range
1.503.60
Volume
646.04K1.48×
Mkt cap
131.26M
P/E ttm
—
Fwd P/E
-1.27
EPS ttm
-1.64
Div yield
0.00%
Earnings
Aug 12, 2026
From 52w high
−49.58%
ABOS shareholders
ABOS Ownership
13F / N-PORT filings via Yahoo
Institutions
66.6%
71.4% of the float
Insiders
6.8%
officers and directors
Institutional holders
130
filing positions
Top 10 institutions
54.7%
3 adding · 1 trimming
Top Institutions
| Holder | % held | Shares | Value | Change | As of |
|---|---|---|---|---|---|
| RA Capital Management, L.P. | 29.03% | 20.99M | $38.10M | 0.0% | Jun 30, 2026 |
| Sands Capital Alternatives, LLC | 5.14% | 3.72M | $6.75M | 0.0% | Jun 30, 2026 |
| Blackrock Inc. | 3.44% | 2.49M | $4.52M | +1296.4% | Jun 30, 2026 |
| Alyeska Investment Group, L.p. | 3.39% | 2.45M | $4.46M | 0.0% | Jun 30, 2026 |
| Franklin Resources, Inc. | 3.19% | 2.31M | $4.18M | 0.0% | Jun 30, 2026 |
| Adar1 Capital Management, LLC | 2.92% | 2.11M | $3.83M | −2.1% | Jun 30, 2026 |
| Vanguard Capital Management LLC | 2.31% | 1.67M | $3.03M | +11.0% | Jun 30, 2026 |
| Knollwood Investment Advisory, LLC | 2.25% | 1.63M | $2.96M | 0.0% | Jun 30, 2026 |
| Geode Capital Management, LLC | 1.58% | 1.14M | $2.07M | +174.3% | Jun 30, 2026 |
| Ikarian Capital, LLC | 1.46% | 1.05M | $1.91M | 0.0% | Jun 30, 2026 |
Top Funds
| Holder | % held | Shares | Value | Change | As of |
|---|---|---|---|---|---|
| VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund | 1.55% | 1.12M | $2.03M | 0.0% | Jun 30, 2026 |
| Franklin Strategic Series-Franklin Biotechnology Discovery Fund | 1.45% | 1.05M | $1.91M | 0.0% | Jul 31, 2026 |
| iShares Trust-iShares Russell 2000 ETF | 1.41% | 1.02M | $1.85M | +0.7% | Aug 31, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund | 0.71% | 513.51K | $932.02K | +44.2% | Jun 30, 2026 |
| Fidelity Salem Street Trust-Fidelity Small Cap Index Fund | 0.71% | 513.77K | $932.50K | −0.1% | Jul 31, 2026 |
| iShares Trust-iShares Russell 2000 Value ETF | 0.59% | 425.50K | $772.28K | +0.5% | Aug 31, 2026 |
| Fidelity Concord Street Trust-Fidelity Extended Market Index Fund | 0.32% | 228.46K | $414.64K | −0.5% | Aug 31, 2026 |
| iShares Trust-iShares Micro-Cap ETF | 0.22% | 157.59K | $286.02K | +0.7% | Aug 31, 2026 |
| SCHWAB CAPITAL TRUST-Schwab Small-Cap Index Fund | 0.16% | 115.09K | $208.88K | +100.0% | Jul 31, 2026 |
| Dimensional ETF Trust-Dimensional U.S. Small Cap ETF | 0.14% | 100.01K | $181.52K | +13.9% | Jul 31, 2026 |
Institutions report quarterly, up to 45 days after the quarter ends, so these positions can be months old. Change compares the share count with the holder's previous filing. Insider transactions are on the overview page (INSD).