Event studies in Turkey

Basdas U., Oran A.

Borsa Istanbul Review, vol.14, no.3, pp.167-188, 2014 (Scopus) identifier

  • Publication Type: Article / Review
  • Volume: 14 Issue: 3
  • Publication Date: 2014
  • Doi Number: 10.1016/j.bir.2014.03.003
  • Journal Name: Borsa Istanbul Review
  • Journal Indexes: Scopus
  • Page Numbers: pp.167-188
  • Keywords: Borsa Istanbul, Clustering, Event study methodology, Stock returns
  • Abdullah Gül University Affiliated: Yes


The primary goal of this paper is to review the event studies conducted for Turkey to in order to identify the common components in their designs. This paper contributes to the existing literature by reviewing all event studies for Turkey for the first time, but more importantly; this review leads to the upcoming event studies on Turkey by highlighting main components of a proper design. Based on the review of 75 studies, it is observed that event studies generally choose BIST-100 (formerly, ISE-100) market index and market adjusted returns with the parametric tests. In general, the studies prefer to rely on one type of model to calculate abnormal returns without discussing the selection of the underlying model. Especially for the event studies focusing on the impact of political events or macroeconomic announcements in Turkey, there is a risk of clustering due to the application of same event date for all observations.