US tech stocks are at serious risk of a hedge-fund deleveraging because margin borrowing is surging. A compounding leverage model projects FINRA-reported margin debt rising from $1.3 trillion to $1.55 trillion next week, up $250 billion in a month after $100 billion the month before, concentrated in semiconductors and memory. Funding spreads on S&P futures and total return swaps are at multi-year highs, echoing Archegos: a funding or volatility spike could force selling and more margin calls. x.com x.com