We explore the impact of earnings announcements on equity markets, using intraday price data for the DJIA stocks. We find on a daily basis, an abnormally high volatility only within one day following the overnight announcement. On an intraday basis, a striking volatility spike stands out during...

We examine the response of foreign investors to escalating political conflict and its impact on the South Korean stock market surrounding 13 North Korean military attacks between 1999 and 2010. Using domestic institutions and domestic individuals as benchmarks, we evaluate the trading behavior...

We examine stock market returns at short intervals following after-hours earnings announcements to determine whether the opening price set by NYSE market makers is efficient. Our tests of return volatility, correlation of the close-to-open return with subsequent returns, and trading strategies...