The idiosyncratic risk is a key input of the standard event study method. The recent literature has suggested that the idiosyncratic risk is not stable through time, and it has increased significantly in the nineties. This paper investigates to what extent the event study method is affected by...

The idiosyncratic risk is a key input of the standard event study method. The recent literature has suggested that the idiosyncratic risk is not stable through time, and it has increased significantly in the nineties. This paper investigates to what extent the event study method is affected by...

Since the contribution of Fama, Fisher, Jensen and Roll (1969), event studies have become an important reference tool for empirical research in finance. The original methodology has been improved in order to tackle numerous problems such as event-date uncertainty, event clustering, event-induced...

Mergers and acquisitions offer a framework for shedding new light on the stock market performance of socially responsible investments (SRI). We use Innovest's Intangible Value Assessment (IVA) ratings as a measure of firms' ability to cope with social and environmental risks. The IVA ratings...

Since the contribution of Fama, Fisher, Jensen and Roll (1969), event studies have become an important reference tool for empirical research in finance. The original methodology has been improved in order to tackle numerous problems such as event-date uncertainty, event clustering, event-induced...