Japan's most powerful known earthquake struck at 2:46p.m. on Friday, March 11, 2011. We study the unusual trading behaviors of individual and foreign investors in Japan during the aftermath of this natural disaster. Individual investors typically show contrarian trading patterns, so the sharp...

Mean and variance of daily type A and B stock returns in Shanghai and Shenzhen exchanges are studied before and after these stocks were subject to a ± 10% daily return limit, and when investors' clientele were segmented, vs. merged. We find that imposing the ± 10% return limit significantly...