What's Behind the Big Surge in US Government Bond Yields

The surge in U.S. Treasury bond yields stems primarily from the massive volume of government debt issuance relative to the capacity of discretionary investors to absorb it, rather than solely from inflation expectations. Stanford finance professor Darrell Duffie explains that as debt-to-GDP ratios climb, the market requires higher yield compensation to entice pension funds and hedge funds to hold additional duration. While Treasury buyback programs effectively clean up illiquid "dust" in the market, they lack the scale to suppress yields against these broader supply-demand pressures. Furthermore, the Federal Reserve faces a structural "ratchet effect" where commercial banks rely on reserves for liquidity regulations, complicating efforts to shrink the central bank's balance sheet without triggering volatility. Ultimately, the Treasury and the Fed operate with limited tools to control these market-driven trends, highlighting the growing tension between fiscal deficits and financial stability.