US 30-Year Yield Hits Highest Level Since 2007: Global Bond Selloff Accelerates

The global bond market experienced a sharp reversal on May 15, 2026, as yields climbed to their highest levels in years on mounting inflationThe rate at which prices rise across an economy. concerns and geopolitical oil shocks. The US 30-year Treasury yield pushed to 5.11 percent, its highest since May 2025, as market participants repriced expectations for Federal Reserve policy. This move marked a dramatic pivot from the rate-cut narrative that had dominated markets just weeks earlier; instead, traders now priced in the possibility of Fed hikes rather than cuts.

The catalyst was multi-layered. Oil prices remained elevated due to the Iran-Middle East conflict, pushing concerns about imported inflationThe rate at which prices rise across an economy. higher, particularly for economies like India (which raised fuel prices for the first time in four years) and Pakistan. Simultaneously, core inflation remained sticky across developed economies, and earnings season revealed companies grappling with wage and input-cost pressures. The market also reacted to the approaching end of Jerome Powell's tenure as Fed Chair; Kevin Warsh's imminent arrival at the helm introduced fresh uncertainty about the Fed's policy stance, with some strategists warning that yields had become 'unhinged' relative to fundamentals.

Cross-asset implications were severe. Equity markets stumbled as higher discount rates lowered present-value calculations for growth stocks, particularly the mega-cap technology names that had driven the rally since early May. On May 15 close, the S&P 500 and Nasdaq both declined roughly 1 percent, with semiconductor and AI-related stocks leading the selloff (NVDA down 2-3 percent, AMD down 3.3 percent). Currency markets reacted violently; sterling hit its worst week since 2024 against the dollar. Gold, typically a beneficiary of inflationThe rate at which prices rise across an economy. concerns, remained under pressure due to higher real rates. Credit spreads widened as investors rotated out of durationBond price sensitivity to interest rate changes.-sensitive assets and into higher-yielding sectors like energy.

The debate centers on whether yields have overshot or represent a genuine repricing of inflationThe rate at which prices rise across an economy. risk. SocGen's Albert Edwards and other inflation hawks argued that double-digit price growth was plausible within 18-24 months, validating the selloff. Others, including RBC strategist Lori Calvasina, noted that US equity valuations would face sustained pressure if yields broke above 5 percent, a threshold that historically depresses price-to-earnings multiples. BofA strategists warned of profit-taking opportunity in early June, while Morgan Stanley highlighted the risk of disruption in Treasury futures markets as hedging demands accelerated.