Black Spade Acquisition III BIII Institutional Ownership

Updated Oct 10, 2026

Black Spade Acquisition III Co (NYSE:BIII) had 40 institutional holders reporting a position on Form 13F for the quarter ended June 30, 2026.

• Collectively, these holders controlled 60.04% of Black Spade Acquisition III's outstanding shares in Q2 2026, up from 49.45% in Q1 2026.
• Total shares held in Black Spade Acquisition III rose 21.42% versus Q1 2026.
• Looking at the 40 holders of BIII individually, 16 added to their positions, 4 reduced their stakes and 20 left their positions unchanged.
• Institutional investors held 13.81Mn shares of Black Spade Acquisition III in total at the end of Q2 2026, up 2.44Mn from the prior quarter.
• As of June 30, 2026, the biggest holder of Black Spade Acquisition III was Aristeia Capital, L.L.C. with 1.1Mn shares, or 4.78% of shares outstanding.
• The largest position increases in BIII for Q2 2026 were by Millennium Management LLC (+600K shares), Fort Baker Capital Management LP (+200K shares), StoneX Group Inc. (+79.74K shares), Radcliffe Capital Management, L.P. (+19.25K shares) and Wolverine Asset Management LLC (+2.81K shares).
• Holders that trimmed the most shares of Black Spade Acquisition III in Q2 2026 while keeping a position were Shaolin Capital Management LLC (-116.96K shares), Clear Street Group Inc. (-22.57K shares), Virtu Financial LLC (-5.8K shares) and Parallax Volatility Advisers, L.P. (-1 share).
• Per Business Quant data, the 10 largest holders of Black Spade Acquisition III at the end of Q2 2026 were Aristeia Capital, L.L.C. (1.1Mn shares), Tenor Capital Management Co., L.P. (1Mn shares), Magnetar Financial LLC (999.99K shares), Healthcare of Ontario Pension Plan Trust Fund (825K shares), AQR Arbitrage LLC (760.44K shares), Millennium Management LLC (750K shares), Fort Baker Capital Management LP (700K shares), Sona Asset Management (US) LLC (600K shares), Wealthspring Capital LLC (551.82K shares) and Glazer Capital, LLC (500.02K shares).