Efeito spillover da qualidade do lucro de pares no risco sistemático das empresas brasileiras
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https://doi.org/10.1590/Palavras-chave:
qualidade dos lucros, efeito spillover, empresas pares, risco sistemático, custo de capitalResumo
Este estudo objetiva analisar o efeito spillover da qualidade do lucro das empresas economicamente relacionadas sobre o risco sistemático das empresas do mercado acionário brasileiro. Embora o estudo do efeito spillover de aspectos do relatório financeiro sobre empresas relacionadas tenha sido foco de pesquisas internacionais recentes, o mesmo não se observa no Brasil. Ademais, segundo Xing e Yan (2019), a relação entre qualidade da informação contábil e o risco sistemático tem sido o tipo de pesquisa menos executada quando se observa os efeitos da informação contábil no custo de capital. Este estudo é relevante para reguladores contábeis, tendo em vista possível efeito de alastramento de suas normas; para investidores, considerando sua restrita capacidade de análise múltiplas empresas simultaneamente, para considerarem análise por amostra; para preparadores, para avaliarem suas práticas, tendo em vista a qualidade das empresas pares. Contribui-se com a literatura sobre regulação contábil, qualidade da informação contábil e custo de capital ao fornecer evidências do alcance dos efeitos da informação contábil e suas consequências econômicas. A qualidade dos lucros foi medida conforme Dechow e Dichev (2002) e Pae (2005). O risco sistemático foi mensurado pelo beta de mercado do modelo CAPM. Foram realizadas regressões em painel com dados de 2011 a 2022, com 2 amostras setoriais. O risco sistemático de uma empresa depende não só da qualidade do seu próprio lucro, mas também da qualidade do lucro dos seus pares, ou seja, há um efeito spillover no Brasil e sua magnitude é superior ao da qualidade do lucro da empresa. O risco sistemático da empresa está negativamente associado à qualidade do lucro de seus pares e à qualidade do seu lucro medida conforme Dechow e Dichev (2002); mas não quando medida conforme Pae (2005).
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