Alpha Cognition ACOG Institutional Ownership

Updated Nov 4, 2026

Alpha Cognition Inc. (NASDAQ:ACOG) was reported as a holding by 25 institutional investors in 13F filings for the quarter ended June 30, 2026.

• Their combined stake equaled 48.08% of outstanding shares in Q2 2026, down from 48.28% in Q1 2026.
• Total holdings of Alpha Cognition shares fell 0.41% from Q1 2026, and the number of holders was unchanged from Q2 2025.
• Looking at the 25 holders of ACOG individually, 7 added to their positions, 5 reduced their stakes and 13 left their positions unchanged.
• Altogether, institutional holders owned 10.47Mn ACOG shares at the end of Q2 2026, down 43.48K from the prior quarter and up 4.75Mn from a year earlier.
• Opaleye Management Inc. was the top holder of Alpha Cognition as of June 30, 2026, with 2.9Mn shares, or 13.30% of shares outstanding.
• The largest position increases in ACOG for Q2 2026 were by Opaleye Management Inc. (+333.52K shares), Citadel Advisors LLC (+7.96K shares), Two Sigma Investments, LP (+2.95K shares), UBS Group AG (+1.02K shares) and Jones Financial Companies LLLP (+150 shares).
• The biggest cuts to ACOG positions during Q2 2026 came from Ikarian Capital, LLC (-220K shares), Cantor Fitzgerald, L. P. (-79.71K shares), Boothbay Fund Management, LLC (-67.25K shares), Sphera Funds Management LTD. (-21.8K shares) and Royal Bank of Canada (-557 shares).
• Per Business Quant data, the 10 largest holders of Alpha Cognition at the end of Q2 2026 were Opaleye Management Inc. (2.9Mn shares), Solas Capital Management, LLC (1.92Mn shares), AWM Investment Company, Inc. (1.67Mn shares), Cable Car Capital, LP (1.38Mn shares), Ikarian Capital, LLC (836.26K shares), Sphera Funds Management LTD. (545.82K shares), Alyeska Investment Group, L.P. (365K shares), Aristides Capital LLC (218.51K shares), Boothbay Fund Management, LLC (189.15K shares) and Cantor Fitzgerald, L. P. (108.92K shares).