I would like to know more about my great-grandfather’s company prior to the nationalization. How can I do this?

Archival holdings of industrial, commercial, transport and agricultural companies, financial institutions, insurance, cooperatives, marketing representative of national importance are hold by the Department of Business Archives and the  Department of Post-1945 Economic Government Agencies . The liquiditation of smaller companies are generally carried out by the Pénzintézeti Központ (Banking Center), which archival holdings is currently on the Economic Department. To obtain further information about the existence of the company you are looking for, send us an email with the company's name and other known information included. If the research in MOL does not work, the competent regional archives may help. You can find the availability of the regional archives of Hungary here.