US Debt Spiral Reaches Historic Milestone: $40 Trillion Threshold Breached as Bond Market Sounds Alarm

The United States' gross national debt has crossed the historic $40 trillion threshold for the first time in history, sparking a fresh wave of anxiety across global financial markets amid Washington's relentless spending and widening fiscal deficits.

Washington's Bi-Partisan Spending Binge and Chronic Deficits

According to the latest Treasury Department data, the gross debt balance reached $40.047 trillion on Tuesday afternoon, marking an unprecedented peak. This milestone is the culmination of years of aggressive fiscal expansion sanctioned under both Republican and Democratic administrations.

■During his first term, Donald Trump approved $8.4 trillion in new debt, with a massive portion dedicated to Covid-19 relief measures.

■President Joe Biden's administration added another $4.3 trillion to the national ledger during his tenure.

■In the 2026 fiscal year, which began in October 2026, the debt has already surged by $1.8 trillion, driven significantly by $100 billion in tariff refunds.

Bond Market Liquidity Squeeze Prompts Treasury Buyback Surge

With Congress deadlocked over the spending bill and a federal government shutdown looming on September 30, volatility in the debt markets is forcing the Treasury to take emergency measures. As global investors balk at sticky inflation and escalating geopolitical tensions between the US and Iran, demand for US Treasuries has weakened. In response, the US Treasury announced it would double its government debt buyback program to support market liquidity and stabilize yields.

Ege Kaan's Analysis: Crossing the $40 trillion mark is not just a bookkeeping milestone; it represents a systemic risk for Wall Street and global macro strategy. While S&P 500 corporate earnings seasons have remained resilient, the upward pressure on Treasury yields is aggressively compressing the Equity Risk Premium (ERP). In the options space, we are observing a subtle rise in the VIX and heightened volatility in the MOVE index, signaling that institutional players are hedging against a potential fiscal shock. The Treasury's decision to double buybacks highlights a structural liquidity squeeze that could trigger "Gamma Squeeze" dynamics in derivative markets. If risk-free rates remain structurally elevated due to this debt overhang, equity valuations will face a painful multiple contraction.