The study analyses the individual and joint impact of family control and diversification on the perfor-mance of major Spanish corporations, considering the nature of the ltimate owner of non-family groups.The study uses a sample of ninety-nine Spanish corporations, each comprising a parent...

This study analyses the impact of family control on decisions regarding the specialization and diversification of large business groups whose parent companies are listed on Spanish stock exchanges. Using a sample of ninety-nine companies, having identified the companies that constitute the...