Compx International CIX Institutional Ownership

Updated Oct 11, 2026

Compx International Inc (NYSE:CIX) was reported as a holding by 46 institutional investors in 13F filings for the quarter ended June 30, 2026.

• These investors held 6.53% of outstanding shares in Q2 2026, up from 6.44% the quarter before.
• Total holdings of CIX shares rose 1.41% from Q1 2026, and the holder count rose 12.20% from Q2 2025.
• Among the 46 holders of Compx International, 19 added to their positions, 17 reduced their stakes and 10 left their positions unchanged.
• The aggregate institutional position in Compx International was 804.52K shares at the end of Q2 2026, up 11.18K from the prior quarter and down 120.52K from a year earlier.
• Dimensional Fund Advisors LP held the largest position in CIX at 179.83K shares as of June 30, 2026, or 1.46% of shares outstanding.
• Holders that added the most shares of Compx International in Q2 2026 were BlackRock, Inc. (+15.51K shares), Geode Capital Management, LLC (+6.26K shares), Vanguard Portfolio Management LLC (+1.52K shares), Northern Trust Corp (+994 shares) and Wells Fargo & Company (+740 shares).
• Holders that trimmed the most shares of Compx International in Q2 2026 while keeping a position were Vanguard Capital Management LLC (-6.69K shares), Renaissance Technologies LLC (-6.2K shares), EverSource Wealth Advisors, LLC (-4.22K shares), Bridgeway Capital Management, LLC (-1K shares) and Morgan Stanley (-773 shares).
• Per Business Quant, the top 10 investors in CIX for the quarter ended June 30, 2026 were Dimensional Fund Advisors LP (179.83K shares), Royce & Associates LP (166.07K shares), BlackRock, Inc. (123.02K shares), Renaissance Technologies LLC (100.75K shares), Vanguard Capital Management LLC (71.53K shares), Geode Capital Management, LLC (40.84K shares), State Street Corp (30.57K shares), Bridgeway Capital Management, LLC (22.67K shares), Northern Trust Corp (17.98K shares) and Vanguard Portfolio Management LLC (10.35K shares).