Short-term reaction of stock markets in stressful circumstances
In this paper we document the short-term stock price behaviour following a period of stock market stress. We focus on price behaviour using daily market indexes from 39 stock exchanges over the period 1989–1998. Our results are not consistent with the overreaction hypothesis. We find positive (negative) abnormal price performance in the short-term window (up to 10 days) following positive (negative) price shocks. Our analysis also highlights differences between developed and emerging markets. We show that the post-shock abnormal performances are significantly larger for emerging markets but that this momentum behaviour is markedly less in the late 1990s. We find the size of the after-shock tremors to be related to market liquidity, with larger post-shock price changes in less-liquid markets.