Mountain Lake Acquisition MLAAU Institutional Ownership

Updated Oct 16, 2026

Mountain Lake Acquisition Corp. II (NASDAQ:MLAAU) was held by 9 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

• Total holdings of Mountain Lake Acquisition shares fell 85.73% compared with Q1 2026.
• Among the 9 holders of Mountain Lake Acquisition, 2 added to their positions, 2 reduced their stakes and 5 left their positions unchanged.
• Combined, institutional investors held 2.28Mn shares of MLAAU as of Q2 2026, down 13.69Mn from the prior quarter.
• As of June 30, 2026, Calamos Advisors LLC held the largest stake in Mountain Lake Acquisition with 783K shares.
• The biggest increase to a position in MLAAU during Q2 2026 came from Clear Street Group Inc. (+97.49K shares).
• Holders that trimmed the most shares of Mountain Lake Acquisition in Q2 2026 while keeping a position were Toronto Dominion Bank (-244.51K shares) and HRT Financial LP (-1.06K shares).
• Mountain Lake Acquisition's 9 largest institutional shareholders as of Q2 2026 were Calamos Advisors LLC (783K shares), Omers Administration Corp (626.4K shares), Tudor Investment Corp (300K shares), Qube Research & Technologies Ltd (250K shares), Toronto Dominion Bank (166.06K shares), Clear Street Group Inc. (118.42K shares), HRT Financial LP (27.39K shares), Longfellow Investment Management Co LLC (8.41K shares) and UBS Group AG (240 shares), per Business Quant data.