It is widely recognized that interest groups affect both microeconomic and macroeconomic outcomes. However, few researchers have attempted to discern empirically the factors that contribute to interest group activity. This paper provides a test of several theories of group formation in a panel...

This paper provides evidence that interest group activity is negatively related to aggregate stock market performance. In particular, the ¯ndings imply that a one percent increase in the number of interest groups in a country is associated with a reduction in average annual stock market returns...

The aim of this article is to summarize exhaustively and concisely, the different methodologies for estimating the volatility that has been proposed for the real options approach (ROA), and also provide a theoretical and practical explanation for estimating an unbiased volatility and...

The valuation of options and to a large extent the financial derivatives market require an optimal estimation of the volatility, since this is precisely the variable that is negotiated. We present then a statistical methodology for the estimation of the volatility parameter for an asset using...

The volume of transaction varies according to several factors. Of a point of view of the behavioural finance, a high level of this last can be assigned to a phenomenon of overconfidence or a disposition effect. This paper studies these two phenomena as well as the one of the asymmetry of the...