Central banks should adopt nuanced strategy for bond holdings, says former Fed advisor Levin

Andrew T. Levin, a Dartmouth College economics professor and former Federal Reserve advisor, is making the case that central banks need to stop treating quantitative tightening like a blunt instrument. His argument: the massive bond portfolios built up during the 2008 financial crisis and the COVID-19 pandemic require tailored, case-specific unwinding strategies rather than a uniform rush for the exits. The Fed’s balance sheet swelled past $8 trillion at its peak. That expansion included approximately $4.6 trillion in Treasuries and agency mortgage-backed securities purchased after 2020 alone. The scale of the problem The Federal Reserve holds roughly 30% of all outstanding Treasury notes and bonds. Its share of agency mortgage-backed securities is even more concentrated, exceeding 40%. Levin, who has advised central banks in Sweden and Norway in addition to his Fed experience, has co-authored research detailing the costs and benefits of quantitative easing. His consistent finding is that gradualism in policy reduces the risk of market disruption, while rapid or uniform approaches to tightening can trigger yield spikes and balance sheet losses that outweigh any short-term normaliza...