Japanese retail investors pushed margin buying to ¥6.39 trillion in May 2026, a 30-year record, raising both bullish momentum and correction risk concerns.

US margin debt hit a record $1.4 trillion in May 2026, up 54% year-over-year, as leveraged ETFs and options trading push stock valuations to risky levels.

Individuals ready to pour gains back into market dips in contrarian moves