We conduct efficiency test using the conventional method in Chordia, Roll, and Subrahmanyam (2005) and the wavelet analysis. For the FTSE-100 futures data from January 2001 through December 2004, both approaches identify that, conditional on order imbalance, it takes about 10 minutes for the...

I investigate the relation between returns and volatility at daily to 1-min intervals for VIX ETNs (like ETFs) and futures. As VIX is the implied volatility index and also known as “fear gauge”, this study is on relation between returns of volatility and volatilities of volatility. I find...

In contrast to previous researches on credit derivatives starting from credit risks, this paper examines default risks affected by the credit derivatives. The linkage of default risks and credit derivatives lies in the implicit options existing in the debt relationships. These options can also...

The landscape of China's rural land market has been changed by several significant land right reforms since 1970s. It is always of great interest to both the government and the public to gauge the effectiveness of these reforms. We address this question by investigating the impact of a recent...

In this study, we use both quote and trade data for the FTSE-100 futures for 2001–2004 in order to examine asymmetric volatility in the context of extreme sells. We define extreme sells as ask quotes that involve large percentages of total depth, selling orders executed at prices much closer...

Detecting communities in complex networks is of considerable importance for understanding both the structure and function of the networks. Here, we propose a class of improved algorithms for community detection, by combining the betweenness algorithm of Girvan and Newman with the edge weight...