SinaWeibo is a Twitter-like social network service emerging in China recently. We analyzed the hot weibos (tweets), which exceed threshold of being reposted for 1000 times, from a data set of 650 million weibos during August 2009 and January 2012. We classified the hot weibos into eight...

Using a comprehensive data set of earthquakes in China, we show that investors perceive increased credit risk in quasi-municipal bonds exposed to devastating earthquakes, leading to a significant positive risk premium. Our study identifies that this bias is temporary and decreases as investors...