Asseco Poland S.A. is a Polish multinational software company which develops enterprise software primarily for the banking and finance industries. Founded in 1991 and headquartered in Rzeszów, Poland, Asseco is one of the largest technology companies listed on the Warsaw Stock Exchange and a component of the WIG20 stock market index. The company operates in over 60 countries and employs approximately 33,700 people worldwide. Asseco is the largest software house in Central and Eastern Europe. As of early 2025, the shareholder structure underwent significant changes after Cyfrowy Polsat, previously the largest shareholder, sold the majority of its stake to the Dutch investment entity Yukon Niebieski Kapital B.V. Wikipedia