Mountain Lake Acquisition MLAA Institutional Ownership

Updated Oct 10, 2026

Mountain Lake Acquisition Corp. II (NASDAQ:MLAA) was held by 57 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

• Together they owned 66.26% of the outstanding stock in Q2 2026, up from 34.50% a quarter earlier.
• Total holdings of Mountain Lake Acquisition shares rose 92.01% compared with Q1 2026.
• Looking at the 57 holders of MLAA individually, 37 added to their positions, 9 reduced their stakes and 11 left their positions unchanged.
• The aggregate institutional position in Mountain Lake Acquisition was 32.45Mn shares at the end of Q2 2026, up 15.55Mn from the prior quarter.
• As of June 30, 2026, the biggest holder of Mountain Lake Acquisition was Aristeia Capital, L.L.C. with 2.19Mn shares, or 4.47% of shares outstanding.
• The largest position increases in MLAA for Q2 2026 were by Highbridge Capital Management LLC (+1.03Mn shares), D. E. Shaw & Co., Inc. (+755K shares), Schonfeld Strategic Advisors LLC (+224.88K shares), Radcliffe Capital Management, L.P. (+54.13K shares) and PenderFund Capital Management Ltd. (+18.4K shares).
• The biggest cuts to MLAA positions during Q2 2026 came from Verition Fund Management LLC (-312.41K shares), Shaolin Capital Management LLC (-308.76K shares), Polar Asset Management Partners Inc. (-200K shares), Periscope Capital Inc. (-150K shares) and Clear Street Group Inc. (-111.15K shares).
• Per Business Quant data, the 10 largest holders of Mountain Lake Acquisition at the end of Q2 2026 were Aristeia Capital, L.L.C. (2.19Mn shares), Adage Capital Partners GP, L.L.C. (2.1Mn shares), Magnetar Financial LLC (2Mn shares), Alberta Investment Management Corp (1.75Mn shares), Linden Advisors LP (1.5Mn shares), AQR Arbitrage LLC (1.45Mn shares), Highbridge Capital Management LLC (1.31Mn shares), Kryger Capital LLC (1.27Mn shares), LMR Partners LLP (1.25Mn shares) and D. E. Shaw & Co., Inc. (1.08Mn shares).