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<p>This study analyzes the stock market performance of 14 healthcare companies listed on the Brazilian stock exchange during the COVID-19 pandemic. It focuses on four subsectors: pharmaceuticals, drugs, equipment, and medical services. Using a comprehensive methodological approach—including the Capital Asset Pricing Model, Sharpe index, and panel data regression—the study assesses individual and portfolio behavior from January 2020 to July 2021. The findings reveal heterogeneous impacts of the pandemic across subsectors, with pharmaceutical companies showing more resilience than drug and medical service firms. The research provides investors, policymakers, and healthcare managers valuable insights by identifying sector-specific risk and return profiles during health crises.</p>

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Stock market performance of Brazilian healthcare companies during the COVID-19 pandemic: a sectoral analysis

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月3日

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  • Marcos Gonçalves Perroni,
  • Carlos Otavio Senff,
  • Alessandra Cassol,
  • Wesley Vieira da Silva,
  • Mauricio Schifler,
  • Zhaohui Su,
  • Claudimar Pereira da Veiga

摘要

This study analyzes the stock market performance of 14 healthcare companies listed on the Brazilian stock exchange during the COVID-19 pandemic. It focuses on four subsectors: pharmaceuticals, drugs, equipment, and medical services. Using a comprehensive methodological approach—including the Capital Asset Pricing Model, Sharpe index, and panel data regression—the study assesses individual and portfolio behavior from January 2020 to July 2021. The findings reveal heterogeneous impacts of the pandemic across subsectors, with pharmaceutical companies showing more resilience than drug and medical service firms. The research provides investors, policymakers, and healthcare managers valuable insights by identifying sector-specific risk and return profiles during health crises.