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α: calibrated so average coauthorship-adjusted count equals average raw count
Is the effect of US monetary policy on stock price bubbles asymmetric? To explore this question, we compute a range of measures of excessive stock price movements that are unrelated to fundamentals. We find that the effects of monetary policy are asymmetric, so that responses to tightening and easing shocks must be distinguished. The effects of monetary policy tightening are stronger than the effects of monetary policy easing. We also find evidence that the asymmetric effect of monetary policy is state-contingent and depends on monetary, financial and business cycles.