Polish government introduced crucial changes concerning conditions of the pension funds functioning in the years 2011-2014. This article focuses on explaining the impact of these political decisions on efficiency of investment fund market in Poland. Therefore, the article aims (1) to find out if...

This paper used the composite construction method proposed by Haugen (1999) and its application by Zhao and Wang (2010) for the Chinese stock market. Utilizing the Shanghai A-share market stocks data, this paper first selected the shares listed on the Shanghai Stock Exchange during January 1,...

This study tests the impact of usage of Twitter as a microblogging service provider on shareholders' returns and abnormal returns. In accordance with this purpose, two portfolios were created based on measurement of whether firms had a Twitter account and, if so, their number of followers and...