Fragmentation vs. Consolidation in Spanish Stock Exchange. A Note

2016 ◽  
Author(s):  
Mikel Tapia
Keyword(s):  
Stock Exchange ◽  
Spanish Stock Exchange

scholarly journals Hybrid fuzzy neural network versus backpropagation neural network: An application to predict the Ibex-35 index stock

2020 ◽  
Vol 6 (1) ◽  
pp. 85-98
Author(s):  
J. Oliver Muncharaz
Keyword(s):  
Neural Network ◽  
Neural Networks ◽  
Neuronal Network ◽  
Fuzzy Neural Network ◽  
Stock Exchange ◽  
Prediction Errors ◽  
Market Prices ◽  
Index Stock ◽  
Fuzzy Neural ◽  
Spanish Stock Exchange

The use of neural networks has been extended in all areas of knowledge due to the good results being obtained in the resolution of the different problems posed. The prediction of prices in general, and stock market prices in particular, represents one of the main objectives of the use of neural networks in finance. This paper presents the analysis of the efficiency of the hybrid fuzzy neural network against a backpropagation type neural network in the price prediction of the Spanish stock exchange index (IBEX-35). The paper is divided into two parts. In the first part, the main characteristics of neural networks such as hybrid fuzzy and backpropagation, their structures and learning rules are presented. In the second part, the prediction of the IBEX-35 stock exchange index with these networks is analyzed, measuring the efficiency of both as a function of the prediction errors committed. For this purpose, both networks have been constructed with the same inputs and for the same sample period. The results obtained suggest that the Hybrid fuzzy neuronal network is much more efficient than the widespread backpropagation neuronal network for the sample analysed.

scholarly journals Análisis de los tipos de acoso y discriminación recogidos en los códigos de conducta de las empresas cotizadas en la Bolsa española en el mercado continuo a 31-12-2015/Analysis of the types of harassment and discrimination included in the codes of conduct

2018 ◽  
pp. 2-17
Author(s):  
María Concepción Verona Martel ◽  
Sara De León Santana
Keyword(s):  
Stock Exchange ◽  
Codes Of Conduct ◽  
Code Of Conduct ◽  
Not Given ◽  
Ethical Codes ◽  
Different Types ◽  
Spanish Stock Exchange

En este trabajo se analizan los diferentes tipos de acoso y discriminación recogidos en los códigos éticos de las empresas cotizadas en la Bolsa española a 31-12-2015. Los resultados muestran que las empresas incluyen una amplia variedad de tipos de acoso y discriminación en su código de conducta, entre los que destaca el rechazo a la discriminación por razón de sexo. Asimismo, el análisis por sectores pone de manifiesto que en todos los sectores no se da la misma importancia a los diferentes tipos de acoso y discriminación. Abstract In this paper we analyze the different types of harassment and discrimination included in the ethical codes of companies listed on the Spanish Stock Exchange on 12/31/2015. The results show that companies include a wide variety of types of harassment and discrimination in their code of conduct, among which the rejection of discrimination based on sex stands out. Likewise, the analysis by sectors shows that in all sectors, the different types of harassment and discrimination are not given the same importance.

scholarly journals Information transmission around block trades on the Spanish stock exchange

2005 ◽  
Vol 15 (3) ◽  
pp. 173-186 ◽  
Author(s):  
M. A. Martínez * ◽  
M. Tapia ◽  
J. Yzaguirre
Keyword(s):  
Information Transmission ◽  
Stock Exchange ◽  
Block Trades ◽  
Spanish Stock Exchange

Option-Expiration Effects in Small Markets: The Spanish Stock Exchange

2001 ◽  
Vol 21 (10) ◽  
pp. 905-928 ◽  
Author(s):  
P. Corredor ◽  
P. Lechón ◽  
R. Santamaría
Keyword(s):  
Stock Exchange ◽  
Spanish Stock Exchange

Retrenchment Strategies and Family Involvement: The Role of Survival Risk

2018 ◽  
Vol 32 (1) ◽  
pp. 58-75 ◽  
Author(s):  
Jose C. Casillas ◽  
Ana M. Moreno-Menéndez ◽  
José L. Barbero ◽  
Eric Clinton
Keyword(s):  
At Risk ◽  
Family Involvement ◽  
Empirical Data ◽  
Family Firms ◽  
Stock Exchange ◽  
Family Businesses ◽  
Board Members ◽  
Spanish Stock Exchange ◽  
Survival Risk

This article analyzes retrenchment strategies that family businesses adopt during periods of crisis. From a socioemotional wealth perspective, we propose that the influence of family board members and family CEOs on retrenchment depends on survival risk. We collected empirical data from companies on the Spanish Stock Exchange (2008-2012). Our findings reveal that family involvement intensifies retrenchment when performance is declining, and that retrenchment intensifies when survival is at risk. We also demonstrate that family firms are able to implement retrenchment measures when required to improve their performance.

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