%0 Journal Article %T Event Study in the Evaluation of Effects of Mergers and Acquisitions %A Agnieszka Perepeczo %A Ph.D. %J Folia Oeconomica Stetinensia %@ 1898-0198 %D 2007 %I %R 10.2478/v10031-007-0007-2 %X The paper presents the essence of the methodology of event study used in developed markets to evaluate post-acquisition performance based on the market data. In particular, the paper discusses the issues of abnormal returns and expected return models, presenting also selected examples of post-acquisition performance in developed markets. At the end, the author has addressed the issue of contemporary tendencies in the event study methodology. %K event study %K abnormal returns %K mergers and acquisitions %U http://versita.metapress.com/content/228g081777lg03u8/?p=0fab0767d9d3441780e640f8aa8a5add&pi=9