RATIONAL BUBBLES IN THE B3 AND BRAZIL'S 2022 PRESIDENTIAL ELECTION

Authors

Abstract

A presidential election process can generate rational expectations of a risk premium among investors, with a speculative bias due to political uncertainty, giving rise to explosive behavior in stock prices. The scope of the discussion in this study is centered on the identification and dating of rational bubbles, without identifying explicit causes of explosive behavior. Stock prices were used at 5-minute intraday intervals throughout the 2022 Brazilian electoral process: from the 5th business day after the start of electoral propaganda (August 23, 2022) to the 15th business day after the second round (November 18, 2022), totaling 60 trading sessions. The Generalized Supremum Augmented Dickey-Fuller test was applied in a panel configuration (GSADF Panel), with each B3 sector being a data panel. The aim was to answer the following question: were there any rational bubbles on B3 during the 2022 Brazilian elections? Using the Pinel GSADF test methodology, it was possible to detect multiple bubble episodes in the Oil, Gas and Biofuel (2 episodes), Health (2 episodes) and Information Technology (5 episodes) sectors. The studies and results presented in this paper can be useful for theoretical and empirical researchers, economic authorities and private sector agents in order to learn about mechanisms for identifying bubbles in financial markets and measuring their extent. The purpose of this study was not to conduct a historical political review of Brazil, nor to analyze the sectors of B3.

Author Biographies

Tomás Nogueira Ribeiro, Universidade Estadual de Maringá - UEM

Mestre em Economia pela Universidade Federal de São Carlos, Sorocaba, São Paulo, Brasil. Doutorando
em Ciências Econômicas na Universidade Estadual de Maringá, Paraná, Brasil.

Geraldo Edmundo Silva Júnior, Federal University of São Carlos

Doutor e Mestre em Economia, ambos pela Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brasil. Economista pela Universidade Federal de Viçosa, Minas Gerais, Brasil. Professor
Associado do Departamento de Economia da Universidade Federal de São Carlos, Sorocaba, São Paulo,
Brasil.

Published

2024-07-30

How to Cite

Nogueira Ribeiro, T., & Silva Júnior, G. E. (2024). RATIONAL BUBBLES IN THE B3 AND BRAZIL’S 2022 PRESIDENTIAL ELECTION. Revista Paranaense De Desenvolvimento - RPD, 45(146). Retrieved from https://ipardes.emnuvens.com.br/revistaparanaense/article/view/1336

Issue

Section

Dossiê: ECOPAR e International Meeting - Org. Prof. Marina Silva da Cunha