Reconstructing a Century of U.S. Corporate Bonds: Credit Risk in Historical Perspective
Working Paper 35578
DOI 10.3386/w35578
Issue Date
Do corporate bond investors earn compensation for bearing credit risk? We construct a new historical corporate bond database spanning 128 years to estimate a corporate bond counterpart to the equity risk premium. Combining hand-collected archival data with modern sources, we assemble a panel of over 100,000 bonds and 7 million observations. While recent samples suggest corporate bond excess returns largely reflect the term premium, our long sample reveals a sizable and statistically significant credit risk premium. Credit spreads predict future corporate bond returns and macroeconomic aggregates, though their ability to forecast business cycle fluctuations weakens when prewar data are included.
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Copy CitationMohammad Ghaderi, Sébastien Plante, Nikolai Roussanov, and Sang Byung Seo, "Reconstructing a Century of U.S. Corporate Bonds: Credit Risk in Historical Perspective," NBER Working Paper 35578 (2026), https://doi.org/10.3386/w35578.Download Citation
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