Global Bond Selloff Accelerates; US 30Y Yield Hits Highest Since 2007 on Inflation Shock

A synchronized global bond rout erupted across May 15 as investors abandoned government securities amid escalating inflationThe rate at which prices rise across an economy. concerns tied to Middle East tensions and supply shocks. The U.S. 30-year Treasury yield rocketed to 5.11 percent, matching its highest level since May 2025 and approaching pre-financial-crisis levels not seen in nearly two decades. British gilts, German bunds, and Japanese government bonds all sold off sharply, with yields climbing faster than most models predicted. The selloff reflects a shift in investor conviction: whereas inflation had been assumed transitory and contained, rising oil prices and geopolitical friction now threaten to reignite the price spiral.

Oil prices surged as Iran war dynamics disrupted supply expectations. ADNOC continued loading LNG onto tankers in the Persian Gulf, and India announced a fuel price hike for the first time in four years, signaling that energy costs were becoming too acute to absorb. Major forecasters slashed their oil demand growth expectations, citing the Iran conflict as the biggest negative for consumption since COVID. Yet paradoxically, the spike in crude prices simultaneously accelerated the bond selloff by convincing fixed-income investors that central banks would need to pause or reverse rate cuts. Wall Street strategists, including those at JPMorgan and RBC, flagged that a 5 percent yield on the 10-year would pose a structural challenge to equity valuations, particularly mega-cap names trading at premium multiples.

The equity market reacted sharply. S&P 500 and Nasdaq futures fell 1 percent ahead of Friday's cash open, ending a seven-week rally that had been powered by AI enthusiasm and mega-cap momentumThe empirical fact that winners keep winning over the medium term.. Semiconductor names like NVDA, AMD, and MU sold off hard, giving back gains amid rising real yields. The rotation into defensive names accelerated, with volatility (VIXThe 30-day implied volatility of S&P 500 options. The 'fear gauge.') rising and breadth deteriorating. Bond vigilantes were back in full force, demanding higher compensation for durationBond price sensitivity to interest rate changes. risk and signaling an end to the easy-money environment that had lifted all risk assets since January 2026.

The debate centers on whether this is a cyclical correction or the start of a structural repricing. Bulls argue that inflationThe rate at which prices rise across an economy. expectations are still anchored and central banks retain credibility to manage the shock. Bears point to the speed of the yield rise, the breadth of the selloff across regions, and the absence of policy tools to fight stagflation if the oil shock persists. Kevin Warsh's arrival as Fed chair on Monday amid rising yields adds an extra layer of uncertainty; some view him as less dovish than Powell on inflation risks.