AI summary pending
View Full Filing (SEC EDGAR)Acumen Pharmaceuticals Inc
$3.10+6.2%
+$9.3M
Net Activity
+4.04% total shares
Institutions Holding
98
Popularity Rank
#4650
Avg Weight
0.04%
Total Value
$128.2M
Market Cap
$187.7M
98 institutions currently hold ABOS, with 54 net buyers and 32 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
32
Net Buying Institutions
54
Top 5 by Value
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Across its top 20 institutional holders, ABOS's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 8/100, avg. turnover score 42/100).
ABOS ranks #4650 out of 37501 tracked stocks by institutional interest, inside the more closely watched half of our coverage.
98 institutions disclose a position in ABOS, but none treat it as a major bet — even Sands Capital Alternatives, LLC, its most concentrated holder, allocates just 1.6% of its own portfolio to it.
Ra Capital Management, L.p. has added to its ABOS position for two straight quarters, increasing it by $24.5M to reach $56.1M today.
Fidelity has trimmed its ABOS position for two straight quarters, cutting it by $4.3M while still holding $20.1K.
ABOS is up 6.2% today, and institutions have been net buyers of $9.3M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
ABOS reported a net loss of $121.3M in its latest fiscal year.
+$16.5M
Total Buy Value
$10.9M
Total Sell Value
54
Net Buyers
32
Net Sellers
ABOS
Q2 2026
Top 5 Institutional Movers
ABOS does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
4
Filings (90d)
$90K
Total Est. Value
39K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| Porter Derrell | 2026-06-17 | $30K |
| Porter Derrell | 2026-06-16 | $30K |
| Porter Derrell | 2026-06-15 | $15K |
| Fountain Nathan B | 2026-06-09 | $14K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
1
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)00509G209
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,242
Total reported value
$2.2T
3229 13F institutions increased their position this quarter
Institutions Holding
5,990
Total reported value
$3.6T
3033 13F institutions increased their position this quarter
Institutions Holding
6,153
Total reported value
$1.8T
2971 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
5,251
Total reported value
$1.3T
Held by 5251 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
5,144
Total reported value
$670.7B
Held by 5144 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
5,074
Total reported value
$1.1T
Held by 5074 institutions — one of the most-tracked stocks on AlphaSMO
Access ABOS's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/ABOSCLI
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