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Open Access
Article
Publication date: 8 February 2018

David Agudelo, Diego A. Agudelo and Julián Peláez

Se estudian los determinantes y la evolución de la actividad bursátil mensual en el mercado accionario colombiano de 2007 a 2016.

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Abstract

Propósito

Se estudian los determinantes y la evolución de la actividad bursátil mensual en el mercado accionario colombiano de 2007 a 2016.

Diseño/metodología/enfoque

Para ello se emplean modelos de series de tiempo tipo ARIMAX y GARCH, incluyendo variables exógenas, recomendadas por la literatura previa.

Hallazgos

Encontramos que la actividad bursátil puede ser pronosticada en buena parte por el valor rezagado a un mes y las innovaciones de cinco y 12 meses. También contribuyen a predecirla, como variables exógenas, una dummy de rendimientos positivos en los últimos tres meses, la presencia de emisiones primarias y el índice VIX de volatilidad del SP500. Estos resultados se mantienen en un alto grado al emplear medidas alternativas de actividad bursátil, el número total de operaciones y la rotación.

Implicaciones prácticas

Se propone un modelo de predicción de la actividad bursátil que puede servir de modelo para otros mercados accionarios de Latinoamérica. El modelo obtenido es altamente predictivo del valor transado total del mercado al siguiente mes. La estimación de la actividad bursátil es de utilidad para instituciones como la Bolsa de Valores de Colombia, reguladores de los mercados financieros, así como para grandes inversionistas institucionales.

Implicaciones sociales

El propósito central de los mercados financieros secundarios consiste en facilitar la transacción de activos financieros, lo que debe reflejarse en alta actividad bursátil, tanto en número de operaciones como en valor transado total. La posibilidad de transar altos montos es una medida importante del desarrollo de un mercado financiero. De esta manera, el modelo aquí propuesto puede usarse para monitorizar y explicar el desarrollo del mercado. En particular, se evidencia el nocivo efecto de la debacle de Interbolsa a finales de 2012 y el positivo efecto de las emisiones primarias.

Originalidad/valor

Este es el primer paper en estudiar la actividad bursátil del mercado accionario colombiano en años recientes. Sirve como modelo para el estudio y seguimiento de esta variable en otros mercados accionarios latinoamericanos.

Purpose

To study the determinants and evolution of the trading activity in the Colombian Stock Market from 2007 to 2016.

Design/methodology/approach

ARMA time series models were used, including several explanatory variables recommended by previous literature.

Findings

We find that stock market activity can be predicted to a large extent by its lags, and that positive returns in the last three months, emissions and the VIX index are also explicative variables, as suggested by empirical studies in other countries and theoretical models of market microstructure. These results are robust by using alternative measures of trading activity, total number of trades and turnover.

Originality/value

The main contribution of this study is the analysis of the trading activity of the Colombian Stock Market, a critical variable for monitoring the development of any financial market.

Details

Journal of Economics, Finance and Administrative Science, vol. 23 no. 44
Type: Research Article
ISSN: 2077-1886

Keywords

Article
Publication date: 13 September 2018

Nicolas Hardy, Nicolas S. Magner, Jaime Lavin, Rodrigo A. Cardenas and Mauricio Jara-Bertin

The purpose of this paper is to provide evidence about the effects of the MILA agreement in terms of improving financial market efficiency.

Abstract

Purpose

The purpose of this paper is to provide evidence about the effects of the MILA agreement in terms of improving financial market efficiency.

Design/methodology/approach

The authors measure efficiency by studying the stock reaction to earnings announcements using a conditional heteroscedasticity generalized autoregressive conditional heteroscedasticity-adjusted market model and the most commonly implemented event study tests for 3,399 events across four countries in the Latin American Integrated Market (MILA).

Findings

Contrary to expectations, the results show that the MILA agreement has isolated gains in terms of reaction to corporate earnings announcements, which translates into partial improvements in market efficiency. However, the evidence indicates that the MILA agreement favored cointegration, which is in line with other studies.

Practical implications

This paper provides evidence for policymakers and regulators that a stock market agreement is a condition that promotes market cointegration, but it is not an element that in itself ensures an improvement in market efficiency. To achieve greater MILA benefits, regulatory and market-level changes are required.

Originality/value

This is the first study that analyses the effect of a stock market agreement on the efficiency of markets, expanding on what has been studied in the finance literature regarding the influence of these agreements on cointegration.

Propósito

Esta investigación entrega evidencia sobre los efectos del acuerdo MILA respecto a mejoras en la eficiencia de los mercados accionarios involucrados.

Diseño/metodología/enfoque

Medimos eficiencia estudiando la reacción de los mercados accionarios tras anuncios de resultados utilizando un modelo de mercado ajustado por heteroscedasticidad condicional (GARCH). Además, consideramos las pruebas de estudios de evento más utilizadas en la literatura para 3,399 eventos en los 4 países involucrados en el acuerdo MILA.

Resultados

Contrario a lo esperado, los resultados muestran que el acuerdo MILA genera aumentos marginales en la reacción frente a anuncios corporativos, lo cual se traduce en mejoras parciales de la eficiencia de mercados accionarios. Sin embargo, la evidencia muestra que el MILA sí favorece a la cointegración, lo cual va en línea con estudios previos.

Implicancias prácticas

Esta investigación entrega evidencia para reguladores de que un acuerdo de integración bursátil promueve cointegración entre mercados, pero no es un elemento que por sí solo asegure una mejora en eficiencia. Para alcanzar mayores beneficios del acuerdo MILA, se requieren cambios adicionales a nivel de mercado accionario y de regulación.

Originalidad/valor

Este es el primer estudio que analiza el efecto de un acuerdo de integración bursátil en la eficiencia de los mercados accionarios, expandiendo lo que ha sido ya encontrado en la literatura financiera respecto a la influencia de estos acuerdos en cointegración.

Open Access
Article
Publication date: 12 June 2017

Christian Acuña-Opazo and Alejandro Álvarez-Marín

La presente investigación examina la existencia de memoria de largo plazo por medio del cálculo del coeficiente de Hurst y Hurst ajustado, y del análisis de características de…

Abstract

Propósito

La presente investigación examina la existencia de memoria de largo plazo por medio del cálculo del coeficiente de Hurst y Hurst ajustado, y del análisis de características de estructuras caóticas en la serie del mercado bursátil de Chile, específicamente a través del Índice de Precios Selectivo de Acciones.

Diseño/metodología/enfoque

Se desarrolló un breve análisis del mercado, según la metodología de Box y Jenkings. La validez de los resultados se realizó por medio de la prueba propuesta por Brock, Dechert y Scheinkman. En segundo lugar, se procedió a analizar la dinámica y patrones del índice y de su rendimiento, para observar si existía evidencia de memoria de largo plazo.

Hallazgos

Los resultados demuestran la presencia de esta memoria en el mercado bursátil chileno, determinado a través del índice accionario en dos escalas, diaria y trimestral, lo que además corrobora resultados obtenidos por otros autores, confirmando el uso de la metodología de Rango Re-escaldo para la identificación y determinación de memoria de largo plazo en una serie temporal.

Originalidad/valor

Este estudio permitirá a futuros investigadores realizar análisis similares en otros mercados, aportando un nuevo enfoque al analizar la memoria de la largo plazo y los factores que inciden en ella.

Palabras clave

Exponente de Hurst, Índice bursátil, Mercados eficientes, Mercados fractales

Tipo de artículo

Artículo de investigación

Purpose

This research examined the existence of long-term memory by calculating the coefficient of Hurst and Hurst set, and the analysis of characteristics of chaotic structures in the series of stock market of Chile, specifically through the Selective Price Index Shares.

Design/methodology/approach

A brief analysis of the market was developed, according to Box and Jenkins methodology. The validity of the results was performed by means of the test proposed by Brock, Dechert and Scheinkman. Secondly, we proceeded to analyze the dynamics and patterns of the index and its performance, to see if there was evidence of long-term memory.

Findings

The results demonstrate the presence of long-term memory in the Chilean stock market, determined by stock index in two scales, daily and quarterly, which also corroborates results obtained by other authors, confirming the use of the methodology Range Re-scalded for the identification and determination of long-term memory in a time series.

Originality/value

This study will allow future researchers to perform similar analyzes in other markets, providing a new approach when analyzing the long-term memory and the factors that affect it.

Details

Journal of Economics, Finance and Administrative Science, vol. 22 no. 42
Type: Research Article
ISSN: 2077-1886

Keywords

Article
Publication date: 3 November 2014

Diego A. Agudelo, Ángelo Gutiérrez Daza and Nazly J. Múnera Montoya

The purpose of this paper is to study the effect of X‐Stream, the new trading platform of the Colombian Stock Exchange since February 2009, on the market quality.

Abstract

Purpose

The purpose of this paper is to study the effect of X‐Stream, the new trading platform of the Colombian Stock Exchange since February 2009, on the market quality.

Design/methodology/approach

The authors test the effect of X‐Stream on market quality variables, such as liquidity (bid‐ask spread and price impact), daily and intraday volatility and trading activity, using mean tests, panel data and conditional variance models. The authors use a proprietary database of transactions and orders from the exchange.

Findings

The evidence suggests that X‐Stream improved the liquidity and trading activity and reduced the volatility of the overall market, especially of the most liquid stocks.

Practical implications

These results support the investment on more sophisticated trading systems in emerging markets.

Originality/value

Contributing to the literature on market quality, this paper provides novel evidence of the effect of reforms on market design, trading rules and operational capabilities on a small and low‐liquidity emerging stock market.

Resumen

Se investiga el efecto de la plataforma de transacción de acciones de BVC, X‐Stream, en la calidad del mercado accionario a partir de su lanzamiento en Febrero del 2009. Partiendo de una base de datos transaccional de BVC, se emplean varios modelos econométricos para medir el efecto de la nueva plataforma en las volatilidades diaria e intradiaria, la liquidez (margen proporcional de oferta y demanda e impacto en el precio) y la actividad bursátil. La evidencia demuestra que X‐Stream mejoró la liquidez y redujo la volatilidad del mercado accionario como un todo, pero especialmente en las acciones más líquidas. Esta investigación contribuye a la literatura en calidad de mercado al aportar nueva evidencia sobre el efecto de los cambios de diseño, reglas de transacción y capacidades operacionales en un mercado accionario de reducidos tamaño y liquidez. De esta manera, sirve como argumento para justificar inversiones en sistemas avanzados de transacción en mercados emergentes.

Details

Academia Revista Latinoamericana de Administración, vol. 27 no. 3
Type: Research Article
ISSN: 1012-8255

Keywords

Article
Publication date: 16 August 2018

Esmeralda Brito-Cervantes, Semei Coronado, Manuel Morales-García and Omar Rojas

The purpose of this paper is to analyse the adaptive market efficiency in the price–volume (P–V) relationship of the stocks listed in the Mexican Stock Exchange. The period under…

Abstract

Purpose

The purpose of this paper is to analyse the adaptive market efficiency in the price–volume (P–V) relationship of the stocks listed in the Mexican Stock Exchange. The period under study goes from 1982 to 2015. In order to detect causality and, thus, determine adaptive efficiency in the market, one linear and two non-linear tests are applied. There are few papers in the literature that study the P–V relationship in Latin American markets; as such, this paper may be of interest and importance to financial academics and practitioners alike.

Design/methodology/approach

The Diks and Panchenko (DP) non-parametric Granger causality and the Brooks and Hinich (BH) cross-bicorrelation tests are applied.

Findings

Derived from the DP test, the findings show that there exists bi-directional non-linear Granger causality in 25.71 per cent of the firms studied, compared to 8 per cent when applying the linear Granger causality test. Therefore, there is evidence of weak-form efficiency in the market. From the BH test, evidence is shown of the adaptive market efficiency, since 71.42 per cent of firms exhibited some form of non-linear dependence in certain periods of time. With these results, the information process should be better studied for a greater comprehension of regulatory policies in the market and better decision-making tools for the investors.

Originality/value

This paper complements studies on the P–V relationship and efficiency in a Latin American market.

Propósito

Este documento analiza la eficiencia adaptativa del mercado para la relación precio-volumen de las empresas que cotizan en la Bolsa Mexicana de Valores. El periodo bajo estudio es de 1982 a 2015. Para detectar causalidad y determinar la eficiencia adaptativa del mercado, se aplicó una prueba lineal y dos no-lineales. Existen pocos documentos en la literatura que estudien la relación precio-volumen en mercados latinoamericanos. Como tal, este documento puede ser de interés e importancia tanto para académicos como para profesionales de las finanzas.

Metodología

Se aplicó la prueba de causalidad no-paramétrica de Diks y Panchenko y la prueba de bicorrelación cruzada de Brooks y Hinich.

Hallazgos

Derivado de la prueba DP, los hallazgos muestran que existe causalidad no-lineal bidireccional en 25.71% de las empresas bajo estudio, comparado a un 8% cuando se aplica la prueba de causalidad lineal de Granger. Por lo tanto, existe evidencia de eficiencia en forma débil del mercado. De la pruba BH, se muestra evidencia de eficiencia adaptativa del mercado, dado que el 71.42% de las empresas exhibieron alguna forma de dependencia no-lineal en ciertos periodos de tiempo. Con estos resultados, el proceso de información debe ser mejor estudiado para una mayor comprensión de las políticas regulatorias del mercado y mejores herramientas para la toma de decisiones por los inversionistas.

Originalidad

Este documento complementa los estudios sobre la relación precio-volumen y la eficiencia en un mercado latinoamericano.

Article
Publication date: 5 November 2020

Jorge Andrés Muñoz Mendoza, Sandra María Sepúlveda Yelpo, Carmen Lissette Velosos Ramos and Carlos Leandro Delgado Fuentealba

The purpose of this article is to analyze the effects of the integration process for the Integrated Market of Latin America (MILA) on its stock markets behavior as well as their…

Abstract

Purpose

The purpose of this article is to analyze the effects of the integration process for the Integrated Market of Latin America (MILA) on its stock markets behavior as well as their degree of integration.

Design/methodology/approach

Daily time series data were used for stock returns, volatility, volume and the number of transactions and securities between August 16, 2007 and December 28, 2018. A DCC-MGARCH model was applied to analyze the impact of MILA on stock market behavior and predict dynamic correlations. A GARCH (1,1) model was used to determine the effect of MILA on co-movements between markets. Finally, a Markov regime switching model was used for robustness analysis.

Findings

MILA increased stock market activity in terms of volume, transactions and securities traded. However, it reduced returns and volatility. MILA had significant effects on the dynamic correlations between regional stock markets. After the integration process, the dynamic correlations of returns and volatility were reduced, but those related to volume, transactions and securities traded increased. Mexico's subsequent entry into MILA further reduced market volatility, but it did not have relevant effects on markets' co-movements.

Originality/value

These results are relevant for investors and policymakers. MILA has benefited the markets by promoting stock market activity, reducing risk, creating a margin for diversification and limiting risk contagion between them. These results help to guide investment decisions due to the fact that MILA's benefits in terms of regional diversification would be greater in some markets.

Details

International Journal of Emerging Markets, vol. 17 no. 2
Type: Research Article
ISSN: 1746-8809

Keywords

Article
Publication date: 27 June 2023

Carlos Maquieira, Orlando Gahona-Flores and Christian Espinosa-Méndez

This study focuses on how China EPU may impact copper-firms stock returns and also how China EPU mediates between stock returns and copper prices returns.

Abstract

Purpose

This study focuses on how China EPU may impact copper-firms stock returns and also how China EPU mediates between stock returns and copper prices returns.

Design/methodology/approach

The sample consists of 44 copper firms from January 2011 to March 2022. The study also considers a subsample of 29 net-exporters countries. Panel data methodology is used, allowing to control for unobservable heterogeneity and endogeneity problems. The equations are estimated through a dynamic panel using the generalized methods of moments (GMM).

Findings

China EPU has a negative and statistically significant relationship with stock returns. Copper price returns are positively associated with stock returns. This research also considers two scenarios: high and low levels of China EPU. For high levels of China EPU states it is reported a negative relationship between stock returns and China EPU and copper price returns show a positive relationship with stock returns.

Research limitations/implications

There is need to explore other metals for what China exhibits a high demand and observe if China EPU and Global EPU have similar impacts on stock returns. It will be useful to identify main firm's consumers of copper and these other metals to explore the relationship between EPU and stock returns.

Originality/value

To the best of the authors’ knowledge, this is the first paper that analyzes China EPU index and its impact on both copper-firms stocks returns and on changes in copper prices. This is done using all public copper firms worldwide.

Propósito

Este estudio se enfoca en como la incertidumbre en política económica de China (llamado China EPU) puede impactar en los retornos de las acciones de empresas del sector del cobre y como China EPU media entre los retornos de las acciones y los retornos de los precios del cobre.

Diseño/metodología/enfoque

La muestral consiste en 44 firmas de cobre desde enero 2011 a marzo 2022. El estudio también considera una sub muestra de 29 países que son exportadores netos de cobre. Se utiliza la metodología de datos de panel, permitiendo controlar por lo inobservable y por problemas de endogeneidad. Las ecuaciones son estimadas a través de panel dinámico usando el método generalizado de los momentos (G.M.M.).

Resultados

EPU de China tiene una relación negativa y estadísticamente significativa con los retornos accionarios. Los retornos de los precios del cobre están positivamente asociados con los retornos accionarios. La investigación también considera dos posibles escenarios: altos y bajos niveles de EPU. Para el estado de altos niveles se reporta una relación negativa entre los retornos accionarios y el EPU de China, además los retornos de los precios del cobre muestran una relación positiva con los retornos accionarios.

Limitaciones de la Investigación/Implicancias

Se requiere explorar otros metales para los cuales China sea un importante demandante a nivel internacional y observar si el EPU de China y el EPU Global tienen similares impactos en los retornos accionarios. A su vez sería útil identificar las principales firmas consumidoras de cobres y estos otros metales de tal forma de chequear la relación entre EPU y retornos accionarios.

Originalidad/valor

En nuestro mejor conocimiento, este es el primer artículo que analiza el índice EPU de China y como este impacta tanto los retornos accionarios de las empresas de cobre como los cambios de precios del cobre. Esto es hecho usando una muestral que incluye todas las empresas de cobre que se transan en bolsa a nivel internacional.

Details

Academia Revista Latinoamericana de Administración, vol. 36 no. 2
Type: Research Article
ISSN: 1012-8255

Keywords

Book part
Publication date: 4 April 2005

Mirko Cardinale

The paper uses 101 years of Chilean and international financial assets returns to investigate mean-variance optimal portfolio allocations. The key conclusion is that the share of…

Abstract

The paper uses 101 years of Chilean and international financial assets returns to investigate mean-variance optimal portfolio allocations. The key conclusion is that the share of international unhedged investments is substantial even in minimum risk portfolios (20%), unless the period 1980–2002 is assumed to be drawn from a different distribution and previous history is disregarded. In addition to that, the paper finds that mean-variance optimal investors would have generated substantial demand for an asset replicating the return profile of an efficient pay-as-you-go pension scheme. Labour income and departures from log-normality of returns might, however, affect the latter conclusion.

Details

Latin American Financial Markets: Developments in Financial Innovations
Type: Book
ISBN: 978-1-84950-315-0

Article
Publication date: 13 July 2023

Amine El Badlaoui and Mariam Cherqaoui

This paper aims to determine whether audit opinions in Morocco, an emerging market, are value relevant to the stock market, through the investigation of the market reaction to the…

Abstract

Purpose

This paper aims to determine whether audit opinions in Morocco, an emerging market, are value relevant to the stock market, through the investigation of the market reaction to the issuance of modified audit opinions (MAOs).

Design/methodology/approach

The event study approach is used. The data are derived from the financial reports of listed companies on the Casablanca Stock Exchange over a period of 10 years from 2010 to 2019.

Findings

This paper does not find evidence that the market reacts to the issuance of MAOs when grouped together. When partitioning the sample by types, there is an evidence of a stock market reaction to qualified audit opinions and the qualified audit opinions with observation paragraph when they are combined with a negative variation of earnings per share. Examination of the impact of different natures of qualifications shows no consistent results and that the market does not distinguish between natures of qualifications.

Research limitations/implications

These results may be due to the fact that some investors have information about the audit opinion long before it is made public, due to privileged access to audit opinions, or that investors underestimate audit opinions relative to other financial indicators.

Originality/value

This study contributes to the existing literature by investigating an emerging market, not previously tested, after the introduction of several regulatory reforms in Moroccan market aimed at enhancing transparency in financial reporting. It refines the market reaction models used in previous studies by using both ordinary least squares and the Scholes–Williams techniques that correct for the effect of thin trading on the market index. In addition, special attention is given to studying the market reaction to each type of MAOs and to each natures of qualifications.

Details

Journal of Financial Reporting and Accounting, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1985-2517

Keywords

Article
Publication date: 3 August 2015

Luis Sanz, Francisco A. Leguizamón R. and Guillermo Edelberg

This case study examines the Argentinian privatization process that occurred in the early 1990s and which marked the start of the third phase of the history of public services in…

Abstract

This case study examines the Argentinian privatization process that occurred in the early 1990s and which marked the start of the third phase of the history of public services in the country. The research focusses on the role played by a group of private companies in the privatization of the Buenos Aires Subway, an icon of the modernization of mass passenger transportation. It explores the background to the process, the alternative selling options available to the government and concerning the degree of public control that would be retained. It examines the effects of privatization on the economy of the country, on government debt and on the workers who lost their jobs as a result of the sale. The paper ends by describing the measures were taken during the transition from a bureaucratic management model to an entrepreneurial one.

Resumen

El caso examina el proceso de privatización en la Argentina a comienzos de los años 90..s cuando inició la tercera fase en la historia de los servicios públicos de ese país. Se centra en la exploración del proceso de transición hacia un conjunto de empresas privadas del Subterráneo de Buenos Aires, icono de modernización del transporte masivo de pasajeros Explora los antecedentes, las alternativas de venta por parte del gobierno, así como las relacionadas con el grado de control en manos de este último. Explora los efectos sobre la economía del país, la deuda del gobierno y el impacto sobre los trabajadores que no serían contratados luego de la privatización. Termina describiendo los cuidados adoptados en la transición desde una gestión de índole burocrática a otra de carácter empresarial.

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