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About 34.05% of ACOG shares are held by financial institutions. CABLE CAR CAPITAL LLC is the top corporate investor, holding 1.06M shares valued at $6.89M. A 6.57% stake in Alpha Cognition Inc. Common Stock is owned by the company. GREEN ALPHA ADVISORS, LLC owns 11.13K shares valued at $72.32K, which translates its holding of 0.07% of the stake in the company.
| Date | Holder | % Stake | Shares Held | Total Value ($) | Shares | % Change in Portfolio |
|---|---|---|---|---|---|---|
| Dec 31, 2025 | CABLE CAR CAPITAL LLC | 6.57% | 1.06M | 6.89M | 191.21K | +22.00% |
| Dec 31, 2025 | GREEN ALPHA ADVISORS, LLC | 0.07% | 11.13K | 72.32K | 11.13K | +100.00% |
| Dec 31, 2025 | GEODE CAPITAL MANAGEMENT, LLC | 0.07% | 11.99K | 77.95K | 0 | 0 |
| Dec 31, 2025 | QUADRATURE CAPITAL LTD | 0.08% | 12.5K | 81.26K | -1.14K | -8.36% |
| Dec 31, 2025 | BERKSHIRE ASSET MANAGEMENT LLC/PA | 0.12% | 19.82K | 128.86K | 2K | +11.22% |
| Dec 31, 2025 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.22% | 34.71K | 225.59K | 34.71K | +100.00% |
| Dec 31, 2025 | TUDOR INVESTMENT CORP ET AL | 0.38% | 61.6K | 400.37K | 0 | 0 |
| Dec 31, 2025 | VILLERE ST DENIS J & CO LLC | 0.46% | 73.88K | 480.19K | 8.62K | +13.20% |
| Dec 31, 2025 | ARISTIDES CAPITAL LLC | 1.33% | 215.46K | 1.4M | 50K | +30.22% |
| Dec 31, 2025 | ALYESKA INVESTMENT GROUP, L.P. | 2.26% | 365K | 2.37M | 365K | +100.00% |
| Dec 31, 2025 | ZULLO INVESTMENT GROUP, INC. | 0% | 0 | - | -19.5K | -100.00% |
| Dec 31, 2025 | CONNECTIVE CAPITAL MANAGEMENT, LLC | 0% | 0 | - | -47.93K | -100.00% |
| Dec 31, 2025 | SALEM INVESTMENT COUNSELORS INC | 0% | 0 | - | -45.4K | -100.00% |
| Dec 31, 2025 | STEWARD PARTNERS INVESTMENT ADVISORY, LLC | 0% | 200 | 1.3K | 0 | 0 |
| Dec 31, 2025 | ALLWORTH FINANCIAL LP | 0% | 750 | 4.88K | 750 | +100.00% |
| Dec 31, 2025 | MARSHALL WACE, LLP | 0.33% | 53.2K | 345.82K | -19.01K | -26.32% |
| Dec 31, 2025 | TWO SIGMA INVESTMENTS, LP | 0.36% | 57.57K | 374.22K | 34.84K | +153.31% |
| Dec 31, 2025 | AWM INVESTMENT COMPANY, INC. | 10.36% | 1.67M | 10.87M | 576.52K | +52.62% |
| Dec 31, 2025 | CORSAIR CAPITAL MANAGEMENT, L.P. | 0% | 0 | - | -134.9K | -100.00% |
| Dec 31, 2025 | MILLENNIUM MANAGEMENT LLC | 0% | 0 | - | -17.25K | -100.00% |
| Dec 31, 2025 | PNC FINANCIAL SERVICES GROUP, INC. | 0% | 120 | 780 | 0 | 0 |
| Dec 31, 2025 | ACT CAPITAL MANAGEMENT, LLC | 0.32% | 51.5K | 334.75K | 51.5K | +100.00% |
| Dec 31, 2025 | CANTOR FITZGERALD, L. P. | 1.01% | 163.43K | 1.06M | 163.43K | +100.00% |
| Dec 31, 2025 | BOOTHBAY FUND MANAGEMENT, LLC | 1.59% | 256.39K | 1.67M | -35.48K | -12.15% |
| Dec 31, 2025 | SPHERA FUNDS MANAGEMENT LTD. | 3.52% | 567.62K | 3.69M | 228.86K | +67.56% |
| Dec 31, 2025 | TOWER RESEARCH CAPITAL LLC (TRC) | 0% | 0 | - | -1.65K | -100.00% |
| Dec 31, 2025 | MORGAN STANLEY | 0% | 0 | - | -840 | -100.00% |
| Dec 31, 2025 | JONES FINANCIAL COMPANIES LLLP | 0% | 0 | - | -200 | -100.00% |
| Dec 31, 2025 | IKARIAN CAPITAL, LLC | 6.54% | 1.06M | 6.87M | 110K | +11.62% |
| Dec 31, 2025 | SOLAS CAPITAL MANAGEMENT, LLC | 12.19% | 1.97M | 12.79M | 685.86K | +53.49% |
| Dec 31, 2025 | OPALEYE MANAGEMENT INC. | 12.83% | 2.07M | 13.46M | 1.96M | +1,698.46% |
| Dec 31, 2025 | CITADEL ADVISORS LLC | 0.73% | 118.42K | 769.74K | 118.42K | +100.00% |
| Dec 31, 2025 | NATIONAL BANK OF CANADA /FI/ | 0.03% | 5.29K | 34.4K | 0 | 0 |
| Dec 31, 2025 | UBS GROUP AG | 0.01% | 927 | 6.03K | 786 | +557.45% |
| Dec 31, 2025 | ROYAL BANK OF CANADA | 0% | 122 | 1K | 0 | 0 |
| Sep 30, 2025 | OPALEYE MANAGEMENT INC. | 0.72% | 115.14K | 749.57K | 115.14K | +100.00% |
| Sep 30, 2025 | BLEICHROEDER LP | 0% | 0 | - | -138.92K | -100.00% |
| Sep 30, 2025 | CONNECTIVE CAPITAL MANAGEMENT, LLC | 0.3% | 47.93K | 312.03K | 47.93K | +100.00% |
| Sep 30, 2025 | TOWER RESEARCH CAPITAL LLC (TRC) | 0.01% | 1.65K | 10.73K | 1.65K | +100.00% |
| Sep 30, 2025 | JONES FINANCIAL COMPANIES LLLP | 0% | 200 | 1.42K | 200 | +100.00% |
| Sep 30, 2025 | ZULLO INVESTMENT GROUP, INC. | 0.12% | 19.5K | 126.95K | 19.5K | +100.00% |
| Sep 30, 2025 | BERKSHIRE ASSET MANAGEMENT LLC/PA | 0.11% | 17.82K | 116.03K | 6K | +50.74% |
| Sep 30, 2025 | MILLENNIUM MANAGEMENT LLC | 0.11% | 17.25K | 112.3K | 26 | +0.15% |
| Sep 30, 2025 | ARISTIDES CAPITAL LLC | 1.03% | 165.46K | 1.08M | 0 | 0 |
| Sep 30, 2025 | UBS GROUP AG | 0% | 141 | 918 | -31.76K | -99.56% |
| Sep 30, 2025 | PNC FINANCIAL SERVICES GROUP, INC. | 0% | 120 | 781 | 0 | 0 |
| Sep 30, 2025 | MANATUCK HILL PARTNERS, LLC | 0% | 0 | - | -117K | -100.00% |
| Sep 30, 2025 | STEWARD PARTNERS INVESTMENT ADVISORY, LLC | 0% | 200 | 1.3K | 0 | 0 |
| Sep 30, 2025 | AWM INVESTMENT COMPANY, INC. | 6.84% | 1.1M | 7.13M | 0 | 0 |
| Sep 30, 2025 | IKARIAN CAPITAL, LLC | 5.91% | 946.26K | 6.16M | 28.39K | +3.09% |
| Sep 30, 2025 | CABLE CAR CAPITAL LLC | 5.42% | 869K | 5.66M | 0 | 0 |
| Sep 30, 2025 | SPHERA FUNDS MANAGEMENT LTD. | 2.11% | 338.75K | 2.21M | -37.9K | -10.06% |
| Sep 30, 2025 | BOOTHBAY FUND MANAGEMENT, LLC | 1.82% | 291.87K | 1.9M | 28.39K | +10.78% |
| Sep 30, 2025 | CORSAIR CAPITAL MANAGEMENT, L.P. | 0.84% | 134.9K | 878.19K | 0 | 0 |
| Sep 30, 2025 | MARSHALL WACE, LLP | 0.45% | 72.21K | 470.1K | 7.89K | +12.26% |
| Sep 30, 2025 | VILLERE ST DENIS J & CO LLC | 0.41% | 65.26K | 424.83K | 1.42K | +2.22% |
| Sep 30, 2025 | TUDOR INVESTMENT CORP ET AL | 0.38% | 61.6K | 400.99K | -8.4K | -12.01% |
| Sep 30, 2025 | SALEM INVESTMENT COUNSELORS INC | 0.28% | 45.4K | 295.57K | 0 | 0 |
| Sep 30, 2025 | TWO SIGMA INVESTMENTS, LP | 0.14% | 22.73K | 147.96K | 22.73K | +100.00% |
| Sep 30, 2025 | QUADRATURE CAPITAL LTD | 0.09% | 13.64K | 88.81K | 13.64K | +100.00% |
| Sep 30, 2025 | NATIONAL BANK OF CANADA /FI/ | 0.03% | 5.29K | 34.13K | -6.8K | -56.24% |
| Sep 30, 2025 | ROYAL BANK OF CANADA | 0% | 122 | 1K | 0 | 0 |
| Sep 30, 2025 | WEXFORD CAPITAL LP | 0% | 0 | - | -16.67K | -100.00% |
| Sep 30, 2025 | BLACKROCK, INC. | 0% | 0 | - | -5.44K | -100.00% |
| Sep 30, 2025 | MASSAR CAPITAL MANAGEMENT, LP | 0% | 0 | - | -12.43K | -100.00% |
| Sep 30, 2025 | SOLAS CAPITAL MANAGEMENT, LLC | 8% | 1.28M | 8.35M | 6.18K | +0.48% |
| Sep 30, 2025 | GEODE CAPITAL MANAGEMENT, LLC | 0.07% | 11.99K | 78.07K | 0 | 0 |
| Sep 30, 2025 | MORGAN STANLEY | 0.01% | 840 | 5.47K | 315 | +60.00% |
| Jun 30, 2025 | BOOTHBAY FUND MANAGEMENT, LLC | 1.64% | 263.48K | 2.46M | -17.87K | -6.35% |
| Jun 30, 2025 | BLEICHROEDER LP | 0.87% | 138.92K | 1.3M | -34.98K | -20.12% |
| Jun 30, 2025 | CORSAIR CAPITAL MANAGEMENT, L.P. | 0.84% | 134.9K | 1.26M | -6K | -4.26% |
| Jun 30, 2025 | MANATUCK HILL PARTNERS, LLC | 0.73% | 117K | 1.09M | 50K | +74.63% |
| Jun 30, 2025 | TUDOR INVESTMENT CORP ET AL | 0.44% | 70K | 653.1K | 0 | 0 |
| Jun 30, 2025 | MARSHALL WACE, LLP | 0.4% | 64.33K | 600.15K | 64.33K | +100.00% |
| Jun 30, 2025 | UBS GROUP AG | 0.2% | 31.9K | 297.62K | 31.9K | +100.00% |
| Jun 30, 2025 | MILLENNIUM MANAGEMENT LLC | 0.11% | 17.22K | 160.7K | 17.22K | +100.00% |
| Jun 30, 2025 | WEXFORD CAPITAL LP | 0.1% | 16.67K | 155.49K | 16.67K | +100.00% |
| Jun 30, 2025 | 0.08% | 12.43K | 116K | 12.43K | +100.00% | |
| Jun 30, 2025 | NATIONAL BANK OF CANADA /FI/ | 0.08% | 12.09K | 110.88K | 280 | +2.37% |
| Jun 30, 2025 | BERKSHIRE ASSET MANAGEMENT LLC/PA | 0.07% | 11.82K | 110.32K | 11.82K | +100.00% |
| Jun 30, 2025 | MORGAN STANLEY | 0% | 525 | 4.9K | 525 | +100.00% |
| Jun 30, 2025 | STEWARD PARTNERS INVESTMENT ADVISORY, LLC | 0% | 200 | 1.87K | 0 | 0 |
| Jun 30, 2025 | ROYAL BANK OF CANADA | 0% | 122 | 1K | 0 | 0 |
| Jun 30, 2025 | VILLERE ST DENIS J & CO LLC | 0.4% | 63.84K | 595.61K | -7.94K | -11.06% |
| Jun 30, 2025 | SALEM INVESTMENT COUNSELORS INC | 0.28% | 45.4K | 423.6K | 0 | 0 |
| Jun 30, 2025 | ALYESKA INVESTMENT GROUP, L.P. | 0% | 0 | - | -337.47K | -100.00% |
| Jun 30, 2025 | ROSALIND ADVISORS, INC. | 0% | 0 | - | -104.84K | -100.00% |
| Jun 30, 2025 | HOHIMER WEALTH MANAGEMENT, LLC | 0% | 0 | - | -41.61K | -100.00% |
| Jun 30, 2025 | MASSAR CAPITAL MANAGEMENT, LP | 0.08% | 12.43K | 116K | 12.43K | +100.00% |
| Jun 30, 2025 | MYDA ADVISORS LLC | 0% | 0 | - | -46K | -100.00% |
| Jun 30, 2025 | AWM INVESTMENT COMPANY, INC. | 6.84% | 1.1M | 10.22M | 0 | 0 |
| Jun 30, 2025 | PNC FINANCIAL SERVICES GROUP, INC. | 0% | 120 | 1.12K | 0 | 0 |
| Jun 30, 2025 | ARISTIDES CAPITAL LLC | 1.03% | 165.46K | 1.54M | -34.54K | -17.27% |
| Jun 30, 2025 | IKARIAN CAPITAL, LLC | 5.73% | 917.87K | 8.56M | -50K | -5.17% |
| Jun 30, 2025 | BLACKROCK, INC. | 0.03% | 5.44K | 50.78K | 5.44K | +100.00% |
| Jun 30, 2025 | SOLAS CAPITAL MANAGEMENT, LLC | 7.97% | 1.28M | 11.91M | -117.32K | -8.42% |
| Jun 30, 2025 | GEODE CAPITAL MANAGEMENT, LLC | 0.07% | 11.99K | 111.89K | 11.99K | +100.00% |
| Jun 30, 2025 | CABLE CAR CAPITAL LLC | 5.42% | 869K | 8.11M | 354.28K | +68.83% |
| Jun 30, 2025 | SPHERA FUNDS MANAGEMENT LTD. | 2.35% | 376.65K | 3.51M | -220.34K | -36.91% |
| Mar 31, 2025 | CORSAIR CAPITAL MANAGEMENT, L.P. | 0.88% | 140.9K | 712.94K | -26.57K | -15.87% |
| Mar 31, 2025 | ALTIUM CAPITAL MANAGEMENT LP | 1.11% | 177.42K | 897.73K | -97.58K | -35.49% |
| Mar 31, 2025 | ARISTIDES CAPITAL LLC | 1.25% | 200K | 1.01M | 0 | 0 |
| Mar 31, 2025 | ROYAL BANK OF CANADA | 0% | 122 | 1K | 0 | 0 |
| Mar 31, 2025 | BOOTHBAY FUND MANAGEMENT, LLC | 1.76% | 281.34K | 1.42M | 63.33K | +29.05% |
| Mar 31, 2025 | IKARIAN CAPITAL, LLC | 6.04% | 967.87K | 5.11M | 212K | +28.05% |
| Mar 31, 2025 | VILLERE ST DENIS J & CO LLC | 0.45% | 71.78K | 363.2K | 47.93K | +200.96% |
| Mar 31, 2025 | ADAR1 CAPITAL MANAGEMENT, LLC | 0% | 0 | - | -204.35K | -100.00% |
| Mar 31, 2025 | ROSALIND ADVISORS, INC. | 0.65% | 104.84K | 530.47K | -147.92K | -58.52% |
| Mar 31, 2025 | SIO CAPITAL MANAGEMENT, LLC | 0% | 0 | - | -434.7K | -100.00% |
| Mar 31, 2025 | BLEICHROEDER LP | 1.09% | 173.9K | 879.93K | 0 | 0 |
| Mar 31, 2025 | ALYESKA INVESTMENT GROUP, L.P. | 2.11% | 337.47K | 1.71M | -62.53K | -15.63% |
| Mar 31, 2025 | CABLE CAR CAPITAL LLC | 3.21% | 514.72K | 2.6B | 0 | 0 |
| Mar 31, 2025 | STEWARD PARTNERS INVESTMENT ADVISORY, LLC | 0% | 200 | 1.01K | 0 | 0 |
| Mar 31, 2025 | HOHIMER WEALTH MANAGEMENT, LLC | 0.26% | 41.61K | 210.54K | -10K | -19.38% |
| Mar 31, 2025 | SALEM INVESTMENT COUNSELORS INC | 0.28% | 45.4K | 229.74K | 45.4K | +100.00% |
| Mar 31, 2025 | MYDA ADVISORS LLC | 0.29% | 46K | 232.76K | -54K | -54.00% |
| Mar 31, 2025 | MANATUCK HILL PARTNERS, LLC | 0.42% | 67K | 339.02K | 0 | 0 |
| Mar 31, 2025 | AWM INVESTMENT COMPANY, INC. | 6.84% | 1.1M | 5.79M | 1.1M | +100.00% |
| Mar 31, 2025 | SOLAS CAPITAL MANAGEMENT, LLC | 8.7% | 1.39M | 6.96M | 0 | 0 |
| Mar 31, 2025 | TUDOR INVESTMENT CORP ET AL | 0.44% | 70K | 354.2K | 0 | 0 |
| Mar 31, 2025 | NATIONAL BANK OF CANADA /FI/ | 0.07% | 11.81K | 59.14K | 72 | +0.61% |
| Mar 31, 2025 | PNC FINANCIAL SERVICES GROUP, INC. | 0% | 120 | 607 | 0 | 0 |
| Mar 31, 2025 | SPHERA FUNDS MANAGEMENT LTD. | 3.73% | 596.99K | 3.02M | -23.01K | -3.71% |
| Mar 31, 2025 | UBS GROUP AG | 0% | 0 | - | -8.65K | -100.00% |
Among the ACOG insiders holding of 9.64% of the stake in company, OPALEYE MANAGEMENT INC., 10 percent owner, holds the largest shares of 2.47M. MERTZ LEONARD POWELL, director, is the second largest ACOG insider with ownership of 121.5K shares. MERTZ PHILLIP JOSEPH, director, stands third with possession of 22.46K shares of that stake.
| Insiders | Designation | Shares Held |
|---|---|---|
| OPALEYE MANAGEMENT INC. | 10 percent owner | 2.47M |
| MERTZ LEONARD POWELL | director | 121.5K |
| MERTZ PHILLIP JOSEPH | director | 22.46K |
| WILLS ROBERT JAMES | director | 15K |
| Date | Insider | Type | Cost | Shares | Value ($) | Shares Total |
|---|---|---|---|---|---|---|
| Mar 30, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 4.99 | 1.85K | 9.23K | 2.47M |
| Mar 27, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.08 | 10K | 50.79K | 2.47M |
| Mar 26, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.28 | 7.32K | 38.68K | 2.46M |
| Mar 25, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.43 | 8.58K | 46.58K | 2.45M |
| Mar 24, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.59 | 4.18K | 23.38K | 2.44M |
| Mar 19, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.71 | 2.09K | 11.95K | 2.44M |
| Mar 18, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.75 | 2.48K | 14.26K | 2.44M |
| Mar 16, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.78 | 1.33K | 7.7K | 2.44M |
| Mar 13, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.75 | 7.36K | 42.29K | 2.43M |
| Mar 12, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.85 | 5.71K | 33.42K | 2.43M |
| Mar 09, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.85 | 2.18K | 12.74K | 2.42M |
| Mar 06, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.80 | 1.9K | 11.02K | 2.42M |
| Mar 05, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.80 | 5K | 28.99K | 90K |
| Mar 04, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.81 | 19.8K | 115K | 2.37M |
| Mar 03, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.75 | 5K | 28.75K | 85K |
| Mar 02, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.80 | 20K | 116K | 2.31M |
| Feb 27, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.99 | 3.64K | 21.8K | 2.29M |
| Feb 26, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.99 | 590 | 3.53K | 2.29M |
| Feb 24, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.80 | 5K | 29K | 80K |
| Feb 23, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.89 | 4.18K | 24.64K | 75K |
| Feb 20, 2026 | OPALEYE MANAGEMENT INC. | PURCHASE | 5.84 | 2.82K | 16.47K | 70.82K |
| Aug 18, 2025 | MERTZ LEONARD POWELL | PURCHASE | 9.00 | 27.78K | 250K | 121.5K |
| Aug 18, 2025 | MERTZ PHILLIP JOSEPH | SALE | 9.00 | 27.78K | 250K | 22.46K |
| Aug 18, 2025 | WILLS ROBERT JAMES | PURCHASE | 8.49 | 15K | 127.33K | 15K |