Artículo

Market rationality after disclosure of relevant data: a Brazilian company case

Carlos Elder Maciel de Aquino, José Everardo Alves Pereira, José Odalio dos Santos, Alexandre Franco de Godoi, Fernando de Almeida Santos

Abstract


The goal of the research is to analyze the stock returns of Cielo SA based upon its intraday data to capture the influence of relevant facts on the share price and trading volume, at the early hours after the disclosure. The Efficient Market Hypothesis (EMH) and Behavioral Finance theories were tested through the Event Study methodology. The research is empirical-analytical in nature, with a quantitative and descriptive approach in relation to the proposed objective. The statistical inferences were built by correlation analysis, linear regression tests and the results were evaluated based on the p-values obtained in the tests. The results indicate that events classified as static and dynamic in the research tend to lead to a higher trading volume and a greater volatility in the share price at the beginning of the first negotiation session after the relevant fact announcement, with adjustments along the day and further negotiations sessions. This evidences investors’ irrational behavior in the first two hours of negotiations.


Keywords


Event study; intraday; efficient market hypothesis

References


Ariely, D., Loewenstein, G. y Prelec, D. (2003). Coherent Arbitrariness. Stable demand curves without stable preferences. The Quarterly Journal of Economics, 118(1), 73-105.

Ball, R. y Brown, P. (1968). An empirical evaluation of accounting income numbers. Journal of Accounting Research, 6, 159-178.

Boudt, K. y Petitjean, M. (2014). Intraday liquidity dynamics and news releases around price jumps: Evidence from the DJIA stocks. Journal of Financial Markets, 17(1), 121-149.

Bradley, D., Clarke, J., Lee, S. y Ornthanalai, C. (2014). Are analysts’ recommendations informative? Intraday evidence on the impact of time stamp delays. The Journal of Finance, 69(2), 645-673.

Brasil, Bolsa, Balcão – [B]3. (2016). Regulamento para Listagem de Emissores e Admissão à Negociação de Valores Mobiliários. Recuperado de http://www.bmfbovespa.com.br/lumis/portal/file/fileDownload.jsp?fileId=8A828D294F270E45014FEFE4D1BC7234

Carmon, Z. y Ariely, D. (2000). Focusing on the forgone: how value can appear so different to buyers and sellers. Journal of Consumer Research, 27(3), 360-370.

Cielo S/A. (2018). Presentación Corporativa – Mayo 2018. Recuperado de: https://mz-filemanager.s3.amazonaws.com/6d7e298e-fbff-40be-a2b8-ee881af927b1/apresentacoes/b917545f4329f0e7e7dde69d185408d018e4716f9697d3434bd1ed4ed5cc55c8/apresentacao_institucional_2018.pdf

Comissão de Valores Mobiliários – CVM. (2002). Instrução CVM nº 358, de 3 de janeiro de 2002, con los cambios introducidos por las instrucciones CVM nºs 369/02, 449/07, 547/14, 552/14, 568/15 E 590/17. Recuperado de: http://www.cvm.gov.br/export/sites/cvm/legislacao/instrucoes/anexos/300/inst358consolid.pdf

Copeland, T. E. y Weston, F. J. (1992). Financial theory and corporate policy. (3rd ed.). Nova Iorque: Addison Wesley.

eSignal. (2017). Trading Platform. Recuperado de: https://www.esignal.com/index

Fama, E. F., Fisher, L., Jensen, M. C. y Roll, R. (1969). The Adjustment of Stock Prices to New Information. International Economic Review, 10(1), 1-21.

Fama, E. F. (1970). Efficient capital markets: A review of theory and empirical work. The Journal of Finance, 25(2), 383-417.

Fama, E. F. (1991). Efficient capital markets: II. The Journal of Finance, 46(5), 1575-1617.

Frankel, R. M., Joos, P. R. y Weber, J. P. (2002). An Empirical Investigation of Pre-Earnings Announcement Quit Period. Financial Accounting eJournal. Recuperado de: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=304486

Goodman, S. N. (2008). A dirty dozen: Twelve P-value misconceptions. Seminars in Hematology, 45(3), 135-140.

Jacowitz, K. E. y Kahneman, D. (1995). Measures of anchoring in estimation tasks. Personality and Social Psychology, 21(11), 1161-1166.

Kahneman, D., Knetsch, J. L. y Thaler, R. H. (1990). Experimental tests of the endowment effect and the coase theorem. Journal of Political Economy, 98(6), 1325-1348.

Kahneman, D. y Tversky, A. (1979). Prospect Theory: an analysis of decision under risk. Econometrica, 47(2), 263-290.

Kahneman, D. y Tversky, A. (1984). Choices, values, and frames. American Psychologist, 39(4), 341-350.

Marshall, B. R., Nguyen, N. H. y Visaltanachoti, N. (2013). ETF arbitrage: Intraday evidence. Journal of Banking & Finance, 37(9), 3486-3498.

Marshall, B. R., Nguyen, N. y Visaltanachoti, N. (2019). A Note on Intraday Event Studies. European Accounting Review, 28(3), 605-619.

Matias-Pereira, J. (2012). Manual de metodologia da pesquisa científica. São Paulo: Atlas.

Mussa, A., Yang, E., Trovão, R. y Famá, R. (2008). Hipótese de Mercados Eficientes e Finanças Comportamentais: As discussões persistem. Revista Facef Pesquisa Desenvolvimento e Gestão, 11(1), 5-17.

Northcraft, G. B. y Neale, M. A. (1987). Experts, amateurs, and real state: an anchoring-and-adjustment perspective on property pricing decisions. Organizational Behavior and Human Decision Processes, 39(1), 84-97.

Odean, T. (1998). Are Investors Reluctant to Realize Their Losses? The Journal of Finance, 53(5), 1775-1798.

Patell, J. y Wolfson, M. (1984). The intraday speed of adjustment of stock prices to earnings and dividend announcements. Journal of Financial Economics, 13(2), 223-252.

Reilly, F. K. y Brown, K. C. (1997). Investment Analysis and Portfolio Management. Orlando: Dryden Press.

Ross, S. A., Westerfield, R. W., Jaffe, J. y Lamb, R. (2015). Administração Financeira: Versão brasileira de Corporate Finance. Porto Alegre: AMGH Editora.

Simon, H. (1966). Models of man: social and rational. New York: Wiley.

Thaler, R. (1985). Mental accounting and consumer choice. Marketing science, 4(3), 199-214.

Thaler, R. (1990). Anomalies: saving, fungibility and mental accounts. The Journal of Economic Perspectives, 4, 193-205.

Thaler, R. (1999). Mental accounting matters. Journal of Behavioral Decision Making, 13(3), 183-206.

Tversky, A. y Kahneman, D. (1974). Judgment under uncertainty: heuristics and biases. Science, 185(4157), 1124-1131. Recuperado de: http://science.sciencemag.org/content/185/4157/1124

Tversky, A. y Kahneman, D. (1992). Advances in Prospect Theory: Cumulative Representation of Uncertainly. Journal of Risk and Uncertainty, 5(4), 297-323.


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