Avaliação das reações do Mercado de Capitais no Brasil e na Austrália após o acidente ambiental da Mineradora Samarco

Autores

DOI:

https://doi.org/10.16930/2237-7662/rccc.v17n52.2659

Palavras-chave:

Teoria Institucional, Teoria dos Stakeholders, Análise de Evento, Setor de Mineração, Acidentes Ambientais.

Resumo

O artigo analisa a reação do mercado de capitais após o acidente ambiental da mineradora Samarco. A Samarco se organiza como joint venture societária dividida igualmente entre a empresa brasileira Vale e a empresa anglo-australiana BHP Billiton. Foi adotada a técnica de estudo de eventos para calcular o risco sistemático (beta) e avaliar as variações no retorno das ações de empresas do setor de mineração dos mercados de capitais brasileiro e australiano. Os dados utilizados na pesquisa foram obtidos no BM&FBovespa para as empresas brasileiras e na Australian Securities Exchange (ASX) para as empresas australianas, ao longo do ano de 2015. Os resultados da pesquisa evidenciam que, no mercado brasileiro, apenas a empresa Vale apresentou um declínio significante do coeficiente beta. Em relação às empresas australianas houve declínio no risco sistemático para as empresas BHP Billiton, Rio Tinto e NCM. O rompimento da barragem de Fundão da mineradora Samarco entrou para o rol dos desastres ambiental globais. No entanto, os impactos econômicos, ambientais e sociais foram rapidamente absorvidos pelo mercado de capitais, e não influenciaram o valor das ações de empresas do setor de mineração no Brasil e na Austrália a longo prazo.

Biografia do Autor

Francisco Sávio Maurício Araújo, Universidade Federal do Ceará

Universidade Federal do Ceará. Endereço: Av. Vital Brasil, 2109, Granja Portugal | 60541-495 | Fortaleza/CE | Brasil.

Rômulo Alves Soares, Universidade Federal do Ceará

Universidade Federal do Ceará. Endereço: Rua Tenente Roma, 157 | Aerolândia | 60851030 | Fortaleza/CE | Brasil.

Mônica Cavalcanti Sá de Abreu, Universidade Federal do Ceará

Universidade Federal do Ceará. Endereço: Av. Da Universidade, 2470 – Benfica | 60.020-180 | Fortaleza/CE | Brasil.

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Publicado

11/10/2018

Como Citar

Araújo, F. S. M., Soares, R. A., & Abreu, M. C. S. de. (2018). Avaliação das reações do Mercado de Capitais no Brasil e na Austrália após o acidente ambiental da Mineradora Samarco. Revista Catarinense Da Ciência Contábil, 17(52). https://doi.org/10.16930/2237-7662/rccc.v17n52.2659