In 1991, the Japanese economy ended a historic expansion and entered a period of stagnation that has yet to abate. Nine years later, the US economy ended a similarly historic expansion. There were many similarities in the two countries' expansions: asset price bubbles, a real investment boom,...

This paper analyzes the impact of changes in monetary policy on equity prices, with the objectives both of measuring the average reaction of the stock market and also of understanding the economic sources of that reaction. We find that, on average, a hypothetical unanticipated 25-basis-point cut...