US margin debt drops $85B in July, largest monthly decline on record

US margin debt fell by roughly $85 billion in July, crashing from $1.502 trillion to $1.417 trillion and marking the single largest monthly decline ever recorded in FINRA data. The drop snapped a streak of consecutive monthly increases that had pushed leveraged borrowing to an all-time high just weeks earlier. From record high to record drop in one month June 2026 was the crescendo. Margin debt hit $1.502 trillion after three straight months of increases and year-over-year growth exceeding 50%. Then July happened. The $85 billion reversal didn’t just trim the excess. It marked the kind of sharp directional pivot that makes risk managers lose sleep. FINRA publishes margin debt figures roughly three weeks after month-end, meaning the July data landed around mid-August. By the time the market digested the numbers, the damage was already baked in. The historical playbook is not encouraging Sharp spikes in margin debt have a well-documented habit of showing up near market tops. The pattern repeated in 2000, when leveraged bets on dot-com stocks preceded the Nasdaq’s multi-year collapse. It showed up again in 2007, just before the financial crisis gutted global equity markets. And it sur...