Odyssey Marine Exploration OMEX Institutional Ownership

Updated Oct 10, 2026

Odyssey Marine Exploration Inc (NASDAQ:OMEX) appeared in the 13F filings of 61 institutional investors for the quarter ended June 30, 2026.

• These investors held 41.69% of outstanding shares in Q2 2026, up from 36.89% the quarter before.
• Total shares held in Odyssey Marine Exploration rose 13.62% from Q1 2026, while the number of holders rose 38.64% from Q2 2025.
• Looking at the 61 holders of OMEX individually, 29 added to their positions, 11 reduced their stakes and 21 left their positions unchanged.
• In total, institutional investors held 24.47Mn shares of Odyssey Marine Exploration at the end of Q2 2026, up 2.93Mn from the prior quarter and up 20.42Mn from a year earlier.
• As of June 30, 2026, the biggest holder of Odyssey Marine Exploration was Two Seas Capital LP with 5.59Mn shares, or 9.53% of shares outstanding.
• The largest position increases in OMEX for Q2 2026 were by Citadel Advisors LLC (+2.49Mn shares), Morgan Stanley (+1.38Mn shares), UBS Group AG (+837.73K shares), BlackRock, Inc. (+66.85K shares) and JPMorgan Chase & Co (+57.41K shares).
• The biggest cuts to OMEX positions during Q2 2026 came from Jane Street Group, LLC (-303.13K shares), Old West Investment Management, LLC (-270.52K shares), Susquehanna International Group, LLP (-162.18K shares), Foundations Investment Advisors, LLC (-155.5K shares) and SLT Holdings LLC (-155.5K shares).
• Odyssey Marine Exploration's 10 largest institutional shareholders as of Q2 2026 were Two Seas Capital LP (5.59Mn shares), Old West Investment Management, LLC (4.5Mn shares), Citadel Advisors LLC (4.04Mn shares), Vanguard Capital Management LLC (2.39Mn shares), Jefferies Financial Group Inc. (1.5Mn shares), Morgan Stanley (1.38Mn shares), UBS Group AG (1.2Mn shares), Susquehanna International Group, LLP (666.4K shares), Geode Capital Management, LLC (602.77K shares) and BlackRock, Inc. (458.79K shares), per Business Quant data.