The Financial Industry Regulatory Authority’s latest quarterly report shows margin debt, the amount investors borrow to buy securities, surged to $1.502 trillion in June, the highest level ever recorded. After a modest dip to $1.417 trillion in July, the figure climbed again to $1.454 trillion in August, indicating that risk‑taking remains elevated.
Wall Street’s performance under Trump has historically outpaced most presidents since the 1890s, with the Dow Jones Industrial Average, S&P 500 and Nasdaq posting higher average annual returns than under almost any other leader. The 2017 Tax Cuts and Jobs Act, which cut the corporate tax rate from 35% to 21%, helped fuel record S&P 500 share buybacks in 2025 and contributed to the market’s bullish run.
However, analysts caution that the current surge in margin debt mirrors four previous episodes in the past three decades that preceded major market downturns: an 80% jump before the dot‑com bust (1999‑2000), a 66% rise before the 2007‑2008 financial crisis, a 95% increase during the pandemic stimulus period (2020‑2021), and the present 77% rise linked to the AI‑driven rally (April 2025‑June 2026). In each case, the rapid expansion of leveraged positions was followed by steep equity losses.
Historical data from Bespoke Investment Group shows that bear markets typically last about 286 calendar days – less than ten months – while bull markets average 1,023 days. Even if a correction materialises in Trump’s sixth year, its brevity could present buying opportunities for long‑term investors.
The warning does not imply an inevitable crash, but the combination of historically high valuations, a potential AI bubble, and the unprecedented level of margin borrowing creates a “perfect storm” for heightened volatility. Market participants and policymakers are watching the trend closely as the 2026‑2027 election cycle approaches.