Why Bond Yields Are Rising-and Might Keep Heading Higher

Key Points:

• Global government bond markets, including those in the US, Japan, and Europe, have experienced sharp sell-offs, pushing yields to multi-decade highs due to factors such as rising government deficits, inflation concerns, and a surge in AI-related corporate borrowing.
• US 30-year Treasury yields surpassed 5.31%, the highest in nearly 20 years, while European and Japanese long-term bond yields also reached levels not seen since the early 2010s or late 1990s, signaling a global repricing of long-term debt.
• The US Treasury responded to rising yields by doubling purchases of older long-term debt through a repurchase program, aiming to stabilize borrowing costs, though analysts caution that structural factors driving yields higher remain intact.
• Inflationary pressures, particularly from higher energy prices linked to the Iran war, have contributed to rising yields in Europe and the UK, while US inflation has shown signs of easing, leading to mixed expectations for future interest rate hikes by central banks.
• A significant driver of the bond market sell-off is the unprecedented issuance of corporate debt by major technology companies funding AI infrastructure, creating supply-demand imbalances that are pushing yields higher and increasing market volatility.