Replication data for: Ownership Concentration and Firm Risk in Brazil

Panel dataset of 229 Brazilian non-financial firms listed on B3, 2010–2024 (2,582 firm-year observations). Contains annual ownership concentration variables (Top1, Top3), firm risk measures (total, idiosyncratic, and downside volatility), and financial controls. Source data from CVM open data portal (dados.cvm.gov.br) and Yahoo Finance.