Key keywords: global bond selloff, rising oil prices, treasury yield surge, inflationary pressure, central bank rate hikes, fixed income market volatility, investor risk aversion, Brent crude futures The ongoing global bond selloff intensified sharply this week, driven by a sustained rally in global oil prices that has rekindled widespread fears of persistent inflation and delayed monetary policy easing by major central banks. Brent crude futures have climbed more than 30% since June, hovering above $94 per barrel as of Thursday, with multiple investment banks forecasting a breach of the $100 threshold before the end of 2023. The surge in energy costs has reversed the months-long downward trend in headline inflation across advanced economies, with U.S. August CPI rising 3.7% year-over-year, up from 3.2% in July, and euro zone inflation remaining stuck at 5.2% in September, well above the European Central Bank’s 2% target. As investors price in the risk of higher interest rates for longer, global fixed income markets have faced unprecedented selling pressure. The yield on the 10-year U.S. Treasury note, a benchmark for global borrowing costs, surged to 4.88% on Wednesday, its highest level since 2007, while the 2-year Treasury yield held above 5.15%, reflecting expectations that the Federal Reserve will deliver at least one more 25-basis-point rate hike before the end of the year. European bond markets have followed the same trend: the 10-year German bund yield hit 3.05% this week, a 12-year high, while the 10-year UK gilt yield rose to 4.7%, approaching the levels seen during the 2022 mini-budget crisis. The selloff has erased more than $2.5 trillion in value from global bond indexes since the start of September, inflicting heavy losses on institutional investors, pension funds and retail investors holding long-duration debt assets. Higher bond yields have also pushed up borrowing costs across the broader economy: the average rate on a 30-year fixed U.S. mortgage climbed to 7.6% this week, the highest since 2000, while corporate high-yield bond spreads have widened by 80 basis points since mid-September, raising the risk of defaults among leveraged companies. Market analysts warn that the selloff could worsen further if oil prices continue to rise. “The energy price shock is completely upending the market’s earlier consensus that inflation would fall steadily and central banks would start cutting rates by the second quarter of 2024,” said Elena Marquez, chief macro strategist at Barclays. “If Brent crude hits $100 per barrel, we expect the Fed to raise rates in November, and the ECB to hold rates at 4.5% well into next year, which will put more downward pressure on bond prices.” Emerging market bonds have also been hit particularly hard, with yields on emerging market sovereign dollar debt rising to an average of 8.9%, as capital flows back to safe-haven U.S. assets, raising debt sustainability concerns for low-income countries with large external debt burdens.