Bond Market Selloff: Q3 Losses and Q4 Outlook

Bond markets sold off sharply in the third quarter, pushing Treasury yields to their highest levels in over two decades, with the 10-year yield reaching 5.26% and the 30-year hitting 5.59%. The Federal Reserve's September rate hike and persistent inflation concerns drove the decline, raising questions about continued losses in the fourth quarter. The Morningstar US Core Bond Index fell 2.53% in Q3, with long-term Treasuries losing 5.37% and high-yield bonds dropping just 0.6%. Sticky inflation, oil price spikes from the Iran war, and heavy corporate borrowing for AI infrastructure—potentially reaching $420 billion by 2027—are pushing yields upward, with futures markets pricing in over 50% odds of two more Fed hikes this year. Analysts expect yields to remain elevated into next year, citing fiscal deficits and a hot economy, though resolving Middle East tensions could ease energy prices and inflation. Higher yields also provide more income for bond investors, offering a cushion against price declines.