US margin debt hit a record $1.42 trillion in May 2026 as leveraged ETFs concentrate in tech and AI sectors, raising fears of a leverage-driven market

South Korean regulators raise alarm over leveraged ETFs that surged to $9.1 billion in assets, with retail investors holding 92% as margin debt hits record

US margin debt hit a record $1.42 trillion in May 2026 as leveraged ETFs concentrate in tech and AI sectors, raising fears of a leverage-driven market