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We adopt a statistical approach to identify the shocks that explain most of the fluctuations of the slope of the term structure of interest rates. We find that one shock can explain the majority of unpredictable movements in the slope. Impulse response functions lead us to interpret this shock as news about future total factor productivity (TFP). By showing that “slope shocks” are essentially “TFP news shocks” we provide a new explanation for the relationship between the slope and macroeconomic fundamentals. Our results also provide a new empirical benchmark for structural models at the intersection of macroeconomics and finance. (JEL E23, E43, E52, G12, G14)
Kurmann et al. (Tue,) studied this question.