LA PARTICIPACIÓN DOS ANALISTAS SELL-SIDE Y BUY-SIDE EM TELECONFERÊNCIAS DE RESULTADOS E O RETORNO DE ACCIONESS

Autores/as

DOI:

https://doi.org/10.4270/ruc.2022121

Palabras clave:

Teleconferencias, Sell-side, Buy-side, Retornos anormales

Resumen

Este estudio buscó verificar el reflejo de la participación de analistas del lado de la venta y del lado de la compra en conferencias telefónicas de ganancias sobre el retorno de acciones de empresas brasileñas que cotizan en bolsa, con base en la Teoría de la Revelación y la Hipótesis del Mercado Eficiente (EMH) en su forma Semifuerte. Los argumentos esbozados en la literatura sobre el tema se basan en el supuesto de que la participación de analistas del lado de la venta y del lado de la compra en conferencias telefónicas sobre ganancias tiene un impacto en los rendimientos anormales en el mercado de capitales. Para llevar a cabo la investigación, se obtuvo una muestra de 79 empresas brasileñas que cotizan en bolsa, con 1372 transcripciones de conferencias telefónicas. El periodo de análisis comprendió 6 años (2010 a 2016). Se realizó un análisis de rendimientos anormales y rendimientos anormales acumulados (CAR) mediante la prueba de signos, y se pudo verificar que la proporción de rendimientos anormales acumulados positivos es estadísticamente igual a la proporción de rendimientos anormales negativos y no apunta a una dirección específica para rendimientos anormales acumulados, demostrando un equilibrio entre rendimientos positivos y negativos. Sin embargo, en cuatro sectores de la muestra, Aeroespacial, Cosméticos, Retail y Saneamiento, los resultados indican que la participación del sell-side y buy-side en las conferencias telefónicas generó información para el mercado, reflejándose en el retorno anormal y en la rentabilidad anormal acumulada de las acciones de las empresas insertas en estos sectores.

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Publicado

2024-01-30

Número

Sección

Sección Nacional