Abstract The paper analyzes the Initial Public Offering of shares of Ukrainian companies on the Warsaw stock exchange. Also, it provides a comparative analysis of the composition and dynamics of the WIG-Ukraine and WIGPoland indexes. Keywords Initial Public Offering; IPO; Warsaw Stock Exchange; GPW; index WIG-Ukraine; index WIG-Poland; capital; financial instruments; stock market; shares; investors. https://openreviewhub.org/sites/default/files/lea-paper/lea-2015/417/economicsandmanagement2015-234-237.pdf