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Alpha Cognition Inc (ACOG)

CUSIP: 02074J501 | NYSE | Healthcare · Biotechnology | Micro Cap | 54 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025Q3 2025
CompareDetailedHistoricalFundsOptions13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13G/AOpaleye Management Inc.
with Opaleye, L.P.
3,095,19314.2%New 5%+ stakeJul 23, 2026No 13F filer matched
13GJames E. Besser
with Manchester Management Company, LLC, Manchester Management PR, LLC, Morgan C. Frank, +1 more

Institutional Holders — Q3 2026

Essex Investment Management Co LLC422,858
0.6% of portfolio›$3.8M
Villere ST Denis J & Co LLC70,158
0.1% of portfolio›$631.4K
Dimensional Fund Advisors LP23,743
0.0% of portfolio›$213.0K
Pekin Hardy Strauss, Inc.23,350
0.0% of portfolio›$210.2K
Geode Capital Management, LLC14,307
0.0% of portfolio›$128.8K
Jacobi Capital Management LLC2,000
0.0% of portfolio›$18.0K
Simplex Trading, LLC904
0.0% of portfolio›$8.1K
Allworth Financial LP750
0.0% of portfolio›$5.4K
StyleTurnoverLocationFiled
Essex Investment Management Co LLC
422,858$3.8M0.6%GrowthMediumBoston, MA2026-10-19
Villere ST Denis J & Co LLC
70,158$631.4K0.1%ValueVery LowNew Orleans, LA2026-11-04
Dimensional Fund Advisors LP
23,743$213.0K0.0%IndexLowAustin, TX2026-11-04
Pekin Hardy Strauss, Inc.
23,350$210.2K0.0%ValueMediumChicago, IL2026-11-02
Geode Capital Management, LLC
14,307$128.8K0.0%IndexVery LowBoston, MA2026-11-06
Jacobi Capital Management LLC
2,000$18.0K0.0%CoreLowPittston, PA2026-11-05
Simplex Trading, LLC
904$8.1K0.0%CoreVery HighChicago, IL2026-11-04
Allworth Financial LP
750$5.4K0.0%IndexLowFolsom, CA2026-11-06
1,639,255
7.4%
New 5%+ stake
Jul 14, 2026
No 13F filer matched
13G/AOpaleye Management Inc.3,095,193
14.2% of class · Jul 23, 2026New 5%+ stake
with Opaleye, L.P.
No 13F filer matched
13GJames E. Besser1,639,255
7.4% of class · Jul 14, 2026New 5%+ stake
with Manchester Management Company, LLC, Manchester Management PR, LLC, Morgan C. Frank, +1 more
No 13F filer matched