scholarly journals Entropy-Based Behavioural Efficiency of the Financial Market

Entropy ◽  
2021 ◽  
Vol 23 (11) ◽  
pp. 1396
Author(s):  
Emil Dinga ◽  
Camelia Oprean-Stan ◽  
Cristina-Roxana Tănăsescu ◽  
Vasile Brătian ◽  
Gabriela-Mariana Ionescu
Keyword(s):  
Financial Markets ◽  
Financial Market ◽  
Informational Efficiency ◽  
Abstract Model ◽  
Informational Entropy ◽  
Logistic Curve ◽  
Economic Agents ◽  
Implicit Information ◽  
Non Linear

The most known and used abstract model of the financial market is based on the concept of the informational efficiency (EMH) of that market. The paper proposes an alternative which could be named the behavioural efficiency of the financial market, which is based on the behavioural entropy instead of the informational entropy. More specifically, the paper supports the idea that, in the financial market, the only measure (if any) of the entropy is the available behaviours indicated by the implicit information. Therefore, the behavioural entropy is linked to the concept of behavioural efficiency. The paper argues that, in fact, in the financial markets, there is not a (real) informational efficiency, but there exists a behavioural efficiency instead. The proposal is based both on a new typology of information in the financial market (which provides the concept of implicit information—that is, that information ”translated” by the economic agents from observing the actual behaviours) and on a non-linear (more exactly, a logistic) curve linking the behavioural entropy to the behavioural efficiency of the financial markets. Finally, the paper proposes a synergic overcoming of both EMH and AMH based on the new concept of behavioural entropy in the financial market.

Risk spillover in financial markets based on support vector quantile regression

2020 ◽  
pp. 1-11
Author(s):  
Wangsong Xie
Keyword(s):  
Quantile Regression ◽  
Financial Markets ◽  
Financial Market ◽  
Financial Risk ◽  
Spillover Effects ◽  
Market Risk ◽  
Support Vector ◽  
Non Linear ◽  
Risk Spillover Effects ◽  
Financial Market Risk

In terms of financial market risk research, with the rapid popularization of non-linear perspectives and the improvement of theoretical reasoning, scholars have slowly broken through the cage of linear ideas and derived new and more practical methods from non-linear perspectives to make up for the shortcomings of traditional research. Based on the support vector classification regression algorithm, this research combines the typical facts and characteristics of financial markets, from the perspective of quantile regression and SVR intelligent technology in computer science, to explore the research method of financial market risk spillover effects from a nonlinear perspective. Moreover, this research integrates statistical research, machine learning and other related research methods, and applies them to the measurement of financial risk spillover effects. The empirical analysis shows that the method proposed in this paper has certain effects, and financial risk analysis can be performed based on the risk spillover effect measurement model constructed in this paper.

scholarly journals A theory of information overload applied to perfectly efficient financial markets

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Giuseppe Pernagallo ◽  
Benedetto Torrisi
Keyword(s):  
Big Data ◽  
Financial Markets ◽  
Information Overload ◽  
Modern Society ◽  
Efficient Market Hypothesis ◽  
Informational Efficiency ◽  
Content Type ◽  
Economic Agents ◽  
Amount Of Information ◽  
Processing Techniques

PurposeIn the era of big data investors deal every day with a huge flow of information. Given a model populated by economic agents with limited computational capacity, the paper shows how “too much” information could cause financial markets to depart from the assumption of informational efficiency. The purpose of the paper is to show that as information increases, at some point the efficient market hypothesis ceases to be true. In general, the hypothesis cannot be maintained if the use of the maximum amount of information is not optimal for investors.Design/methodology/approachThe authors use a model of cognitive heterogeneity to show the inadequacy of the notion of market efficiency in the modern society of big data.FindingsTheorem 1 proves that as information grows, agents' processing capacities do not, so at some point there will be an amount of information that no one can fully use. The introduction of computer-based processing techniques can restore efficiency, however, also machines are bounded. This means that as the amount of information increases, even in the presence of non-human techniques, at some point it will no longer be possible to process further information.Practical implicationsThis paper explains why investors very often prefer heuristics to complex strategies.Originality/valueThis is, to the authors’ knowledge, the first model that uses information overload to prove informational inefficiency. This paper links big data to informational efficiency, whereas Theorem 1 proves that the old notion of efficiency is not well-founded because it relies on unlimited processing capacities of economic agents.

scholarly journals Valuing Peace: The Effects of Financial Market Exposure on Votes and Political Attitudes

Econometrica ◽  
2019 ◽  
Vol 87 (5) ◽  
pp. 1561-1588 ◽  
Author(s):  
Saumitra Jha ◽  
Moses Shayo
Keyword(s):  
Financial Markets ◽  
Financial Market ◽  
Political Attitudes ◽  
Peace Process ◽  
Superior Performance ◽  
Financial Assets ◽  
Material Incentive ◽  
Nonfinancial Information ◽  
Political Messages ◽  
Economic Risks

Can participation in financial markets lead individuals to reevaluate the costs of conflict, change their political attitudes, and even their votes? Prior to the 2015 Israeli elections, we randomly assigned Palestinian and Israeli financial assets to likely voters and incentivized them to actively trade for up to 7 weeks. No political messages or nonfinancial information were included. The treatment systematically shifted vote choices toward parties more supportive of the peace process. This effect is not due to a direct material incentive to vote a particular way. Rather, the treatment reduces opposition to concessions for peace and changes awareness of the broader economic risks of conflict. While participants who were assigned Palestinian assets are more likely to associate their assets' performance with peace, they are less engaged in the experiment. Combined with the superior performance of Israeli stocks during the study period, the ultimate effects of Israeli and Palestinian assets are similar.

Critical Value-Based Power Options Pricing Problems in Uncertain Financial Markets

2021 ◽  
pp. 2150002
Author(s):  
Guimin Yang ◽  
Yuanguo Zhu
Keyword(s):  
Financial Markets ◽  
Financial Market ◽  
Numerical Experiments ◽  
Critical Value ◽  
The Other ◽  
Options Pricing ◽  
Underlying Asset ◽  
Pricing Problems ◽  
Fractional Differential ◽  
The One

Compared with investing an ordinary options, investing the power options may possibly yield greater returns. On the one hand, the power option is the best choice for those who want to maximize the leverage of the underlying market movements. On the other hand, power options can also prevent the financial market changes caused by the sharp fluctuations of the underlying assets. In this paper, we investigate the power option pricing problem in which the price of the underlying asset follows the Ornstein–Uhlenbeck type of model involving an uncertain fractional differential equation. Based on critical value criterion, the pricing formulas of European power options are derived. Finally, some numerical experiments are performed to illustrate the results.

The Capital Market Authority Effectiveness in the Regulation of Financial Markets perspectives from the financial sector actors

2012 ◽  
Vol 02 (11) ◽  
pp. 15-24
Author(s):  
Charles Kombo Okioga
Keyword(s):  
Financial Markets ◽  
Financial Market ◽  
Capital Markets ◽  
Capital Market ◽  
Financial Regulation ◽  
International Standards ◽  
Market Regulation ◽  
Financial Market Regulation ◽  
Market Participants ◽  
New Business

Capital Market Authority in Kenya is in a development phase in order to be effective in the regulation of the financial markets. The market participants and the regulators are increasingly adopting international standards in order to make the capital markets in sync with those of developed markets. New products are being introduced and new business lines are being established. The Capital Markets Authority (Regulator) is constantly reviewing existing regulations and recommending changes to regulate the market properly. Business lines and activities are being harmonized by market participants to provide a one stop solution in order to meet the financial and securities services needs of the investors. The convergence of business lines and activities of market intermediaries gives rise to the diversity of a firm’s business operations to meet multiplicity of regulations that its activities are subject to. The methodology used in this study was designed to examine the relationship between capital markets Authority effective regulation and the performance of the financial markets. The study used correlation design, the study population consisted of 30 employees in financial institutions regulated by Capital Markets Authority and 80 investors. The study found out that effective financial market regulation has a significant relationship with the financial market performance indicated by (r=0.571, p<0.01) and (r=0.716, p≤0.01, the study recommended a further research on the factors that hinder effective financial regulation by the Capital Markets Authority.

scholarly journals The Architecture of Financial Networks and Models of Financial Instruments According to the “Just Transition Mechanism” at the European Level

2020 ◽  
Vol 13 (10) ◽  
pp. 235
Author(s):  
Otilia Manta ◽  
Kostas Gouliamos ◽  
Jie Kong ◽  
Zhou Li ◽  
Nguyen Minh Ha ◽  
...  
Keyword(s):  
Financial Markets ◽  
Financial Market ◽  
Research Priorities ◽  
Financial Instruments ◽  
Global Level ◽  
European Level ◽  
Support Tool ◽  
Eu Directive ◽  
Transition Mechanism ◽  
European Investment

At the global level and in particular the European level, challenges related to climate change and the transition to green transactions have created an imperative where identifying or developing innovative financial instruments, appropriate for these priorities, have become our research priorities and objectives. Starting from the analysis of the European Investment Plan for green transactions, as well as the EU Directive 2018/410 of the European Parliament and of the Council, in conjunction with ongoing efforts to identify innovative financing tools, research is presented based on hypotheses using concepts and models of green financing. The paper aims to analyze the main concepts and phenomena that could be considered generative factors for current financial market trends, as well as the inventory of facts and acts that provide a picture of the financial market. Based on these investigations, this paper suggest how we can best analyze the economic environment, processes, and resources in terms of their predictions regarding the sustainability of financial markets in the context of current challenges. Moreover, our paper aims to highlight in our empirical research the above-mentioned aspects, including the analysis of the emergence of new financial instruments at the global level with a direct impact on financial sustainability at the European level, including reflecting certain particularities of financial markets Romania. This research will be both a scientific contribution to the specialized literature and a possible support tool for the practical activities of entrepreneurs in their economic endeavor of developing sustainable businesses.

scholarly journals Financial Markets’ Governance, Transparency and Informational Efficiency: Role of IfRS Norms, Auditors and Financial Analysts

2016 ◽  
Vol 9 (5) ◽  
pp. 100
Author(s):  
Imen Lamiri ◽  
Adel Boubaker
Keyword(s):  
Financial Markets ◽  
Stock Prices ◽  
Stock Price ◽  
Financial Analysts ◽  
Negative Relationship ◽  
Developed Countries ◽  
Coefficient Of Determination ◽  
Specific Information ◽  
Informational Efficiency

<p>This article explores the informational role of three essential modern financial markets actors such IFRS norms, the Big”4” and the financial analysts for a panel of emergent and developed countries during the period from 2001 to 2010. We hypothesis that these mechanisms help improving the quality of specific information incorporated into stock prices measured by the stock price synchronicity (SPS). The main result is that both financial analyst’s coverage and IFRS adoption's effects seem to be stronger for emerging than developed markets. The results also show a negative relationship between auditors’ opinion and coefficient of determination (R<sup>2</sup>).</p>

scholarly journals Analysis And Directions Of Development Of The Practice Of Attracting Capital From The Financial Market Of Joint-Stock Companies. Evidence From Uzbekistan

2020 ◽  
Vol 02 (12) ◽  
pp. 136-144
Author(s):  
Buvsara Tashmuradova ◽  
◽  
Omonullo Hamdamov ◽  
Keyword(s):  
Financial Markets ◽  
Financial Market ◽  
Financial Sector ◽  
Economic Importance ◽  
Current Situation ◽  
Financial Resources ◽  
International Financial Markets ◽  
The Republic ◽  
National Practice

The paper describes the economic importance of attracting financial resources from the national and international financial markets by joint stock companies operating in the Republic of Uzbekistan. The current situation with the attraction of capital from the international financial markets by companies in the financial sector has been analyzed and key conclusions have been drawn. In national practice, the existing shortcomings in the financing of companies on the basis of debt instruments have been studied and scientific proposals have been developed to address them.

scholarly journals Optimal Investment and Consumption for Multidimensional Spread Financial Markets with Logarithmic Utility

Stats ◽  
2021 ◽  
Vol 4 (4) ◽  
pp. 1012-1026
Author(s):  
Sahar Albosaily ◽  
Serguei Pergamenchtchikov
Keyword(s):  
Financial Markets ◽  
Numerical Simulations ◽  
Financial Market ◽  
Optimal Investment ◽  
Optimal Consumption ◽  
Dynamical Programming ◽  
Verification Theorem ◽  
Logarithmic Utility ◽  
Hamilton Jacobi Bellman ◽  
Optimal Investment And Consumption

We consider a spread financial market defined by the multidimensional Ornstein–Uhlenbeck (OU) process. We study the optimal consumption/investment problem for logarithmic utility functions using a stochastic dynamical programming method. We show a special verification theorem for this case. We find the solution to the Hamilton–Jacobi–Bellman (HJB) equation in explicit form and as a consequence we construct optimal financial strategies. Moreover, we study the constructed strategies with numerical simulations.

scholarly journals Risk Taking, Principal Agent Problems and Breakdown of Corporate Social Responsibility (CSR): How to Reestablish Safe-Assets and Capital Funding for Social Security?

Equilibrium ◽  
2013 ◽  
Vol 8 (2) ◽  
pp. 7-30 ◽  
Author(s):  
Hans-Georg Petersen ◽  
Alexander Martin Wiegelmann
Keyword(s):  
Financial Markets ◽  
Interest Rates ◽  
Financial Market ◽  
Debt Crisis ◽  
Principal Agent ◽  
Market Structures ◽  
Financial Products ◽  
Monetary System ◽  
Capital Funding ◽  
Corporate Social

The breakdown of the financial markets in fall 2007 and the following debt crisis in the EU has produced an enormous mistrust in financial products and the monetary system. The paper describes the background of the crisis induced by functional failures in risk management and the multifold principal agent problems existing in the financial market structures. The innovated nontransparent financial products have mixed up different risk weights and puzzled, or even fooled formerly loyal customers. Contemporaneously abundant liquidity on the international financial market accompanied by easy money policies of the Fed in the US and the ECB in the euro zone have depressed the real interest rate to zero or even negative values. Desperate investors are seeking for safe-assets, but their demand remains unsatisfied. Low real interest rates and the consequently lacking compound interest effect in the same time jeopardize private as well as public insurance schemes being dependent on capital funding: the demographic crisis becomes gloomy. Therefore, the managers of the financial markets have to reestablish CSR and to divide the markets into safe-asset areas for the usual clients and “casino” areas for those who like to play with high risks. Only with transparency and risk adequate financial products can the lost commitment be regained.

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