Results 21 to 30 of about 7,920 (199)

Study on the relationship between the IVol-BR and the future returns of the Brazilian stock market,

open access: yesRevista Contabilidade & Finanças, 2020
In 2015, the Financial Economics Research Center (NEFIN) of the University of São Paulo proposed an implicit volatility index for the Brazilian stock market based on the daily prices of options for the Bovespa index (Ibovespa) and that measures the ...
Paloma Vanni Cainelli   +2 more
doaj   +2 more sources

UM ESTUDO EXPLORATÓRIO DO EFEITO DISPOSIÇÃO NO MERCADO DE AÇÕES DURANTE A PANDEMIA DE COVID-19

open access: yesREAd, 2023
RESUMO Este trabalho busca avaliar a ocorrência do efeito disposição, transação a transação, no mercado brasileiro de ações durante a Pandemia de COVID-19; e identificar variáveis que podem explicar tal efeito através de uma aplicação empírica de mínimos
José Augusto Thomaz Neto   +2 more
doaj   +1 more source

Um índice de mínima variância de ações brasileiras

open access: yesEconomia Aplicada, 2011
Este trabalho desenvolve um índice de carteiras de mínima variância global (MVP) para as ações mais líquidas do Brasil. Os resultados indicaram que a MVP sem limites sobre os pesos das ações não apresenta diferença significativa de desempenho em relação ...
César Thomé Neto   +2 more
doaj   +3 more sources

Comparison of VaR Models to the Brazilian Stock Market Under the Hypothesis of Serial Independence in Higher Orders: Are Garch Models Really Indispensable?

open access: yesBBR: Brazilian Business Review, 2019
Our objective in this article was to verify which models for the Value at Risk (VaR), among those that do not consider conditional volatility (Extreme Values Theory and the traditional Historical Simulation), and those that do consider it (GARCH and ...
Luiz Augusto Finger França Maluf   +1 more
doaj   +1 more source

Análise da rentabilidade dos fundos de investimentos sustentáveis brasileiros no período 2010-2016

open access: yesRevista Contemporânea de Contabilidade, 2019
O presente artigo analisou se os Fundos de Investimentos de Ações de Empresas Sustentáveis proporcionaram retornos positivos em relação ao IBOVESPA e ISE.
Sergio Ricardo Mendes Vasconcelos   +3 more
doaj   +1 more source

INTERRELATIONSHIPS BETWEEN THE STOCK RETURNS OF BRAZILIAN COMPANIES THAT MAKE UP THE SÃO PAULO STOCK EXCHANGE INDEX

open access: yesRevista de Economia Mackenzie, 2020
The objective of this paper was to verify the interrelationships between the stock returns of 33 Brazilian companies that make up the São Paulo Stock Exchange Index (IBOVESPA), from January 2006 to June 2018, using the principal components analysis ...
Edson Zambon Monte   +1 more
doaj   +1 more source

The Volatility Forecasting Power of Financial Network Analysis

open access: yesComplexity, Volume 2020, Issue 1, 2020., 2020
This investigation connects two crucial economic and financial fields, financial networks, and forecasting. From the financial network’s perspective, it is possible to enhance forecasting tools, since econometrics does not incorporate into standard economic models, second‐order effects, nonlinearities, and systemic structural factors.
Nicolás S. Magner   +4 more
wiley   +1 more source

An explanatory model of stock prices in the Brazilian transport sector

open access: yesRevista UNEMAT de Contabilidade, 2021
The aim of this study is to establish an explanatory model of the variation of the prices of shares from the transport sector listed in B3. Methodology: Daily stock prices were collected from companies in the transport sector listed on B3 since its IPO ...
Alexandre Rodrigues da Silva
doaj   +1 more source

Long-range correlations and nonstationarity in the Brazilian stock market

open access: yes, 2003
We report an empirical study of the Ibovespa index of the Sao Paulo Stock Exchange in which we detect the existence of long-range correlations. To analyze our data we introduce a rescaled variant of the usual Detrended Fluctuation Analysis that allows us
Bouchaud   +18 more
core   +1 more source

FXvol: Indicador Antecedente da Taxa de Câmbio

open access: yesFaces: Revista de Administração, 2016
A forte correlação negativa entre a Taxa de Câmbio Brasil-EUA (Ptax) e o índice do mercado de ações (Ibovespa) tem sido amplamente documentada na literatura acadêmica.
Vinicius Mothé Maia   +3 more
doaj   +1 more source

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