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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
301

Využití umělé inteligence na kapitálových trzích ke snížení rizika obchodování / The use of artificial intelligence in the capital markets to reduce the risks of trading

Orság, Štěpán January 2016 (has links)
This thesis deals with the prediction of trading at financial markets and by using the prediction is trying to reduce the risks of entering at the market. The prediction has been work out by using of artificial intelligence. The artificial intelligence is in this thesis represented by neural networks witch model and predict market behavior. The thesis contains a description of the financial markets, exchange trading and its analysis, and artificial intelligence methods. The main part of this thesis is a model for prediction of prices of a particular instrument. This model was developed in MATLAB and should serve as a support for making business decisions. Its aim is to predict the direction and magnitude of movement the price level for the next trading day. The output of this model is processed using the platform MetaTrader 4. At the end are evaluated possible gains from this solution.
302

Návrh a optimalizace obchodní strategie na platformě MetaTrader / Design and Optimatization of Trading Strategy Using MetaTrader Platform

Kundračík, Roman January 2016 (has links)
This Master’s thesis deals with implementation of an automated trading system for application in the currency market. The resulted system is tested and optimized on historical data. Robustness of this strategy is verified by testing on another currency pair and a different timeframe. Efficiency of the system is compared before and after optimization. Created trading system is profitable in all environments which it was tested on.
303

Dynamique et contrôle d'un marché financier avec une approche système multi-agents / Dynamics and control of financial market with a multi-agent system approach

Lucas, Iris 18 July 2018 (has links)
Cette thèse propose une réflexion autour de l'étude des marchés financiers sous le prisme des systèmes complexes.Tout d'abord une description mathématique est proposée pour représenter le processus de prises de décision des agents dès lors où celui-ci bien que représentant les intérêts individuels d'un agent, est également influencé par l'émergence d'un comportement collectif. La méthode est particulièrement applicable lorsque le système étudié est caractérisé par une dynamique non-linéaire. Une application du modèle est proposée au travers de l'implémentation d'un marché artificiel boursier avec une approche système multi-agents. Dans cette application la dynamique du marché est décrite à la fois aux niveaux microscopiques (comportement des agents) et macroscopique (formation du prix). Le processus de décision des agents est défini à partir d'un ensemble de règles comportementales reposant sur des principes de logique floue. La dynamique de la formation du prix repose sur une description déterministe à partir des règles d'appariement d'un carnet d'ordres central tel que sur NYSE-Euronext-Paris. Il est montré que le marché artificiel boursier tel qu'implémenté est capable de répliquer plusieurs faits stylisés des marchés financiers : queue de distribution des rendements plus épaisse que celle d'une loi normale et existence de grappes de volatilité (ou volatility clustering).Par la suite, à partir de simulations numériques il est proposé d'étudier trois grandes propriétés du système : sa capacité d'auto-organisation, de résilience et sa robustesse. Dans un premier temps une méthode est introduite pour qualifier le niveau d'auto-organisation du marché. Nous verrons que la capacité d'auto-organisation du système est maximisée quand les comportements des agents sont diversifiés. Ensuite, il est proposé d'étudier la réponse du système quand celui-ci est stressé via la simulation de chocs de marché. Dans les deux analyses, afin de mettre en évidence comment la dynamique globale du système émerge à partir des interactions et des comportements des agents des résultats numériques sont systématiquement apportés puis discutés.Nos résultats montrent notamment qu'un comportement collectif grégaire apparait à la suite d'un choc, et, entraîne une incapacité temporaire du système à s'auto-organiser. Finalement, au travers des simulations numériques il peut être également remarqué que le marché artificiel boursier implémenté est plus sensible à de faibles répétitions répétées qu'à un choc plus important mais unique. / This thesis suggests reflection in studying financial markets through complex systems prism.First, an original mathematic description for describing agents' decision-making process in case of problems affecting by both individual and collective behavior is introduced. The proposed method is particularly applicable when studied system is characterized by non-linear, path dependent and self-organizing interactions. An application to financial markets is proposed by designing a multi¬agent system based on the proposed formalization.In this application, we propose to implement a computational agent-based financial market in which the system is described in both a microscopie and macroscopic levels are proposed. The agents' decision-making process is based on fuzzy logic rules and the price dynamic is purely deten-ninistic according to the basis matching rules of a central order book as in NYSE-Euronext-Paris. We show that, while putting most parameters under evolutionary control, the computational agent- based system is able to replicate several stylized facts of financial time series (distributions of stocks returns showing a heavy tau l with positive excess kurtosis and volatility clustering phenomenon).Thereafter, with numerical simulations we propose to study three system's properties: self-organization, resilience and robustness. First a method is introduced to quantify the degree of selforganization which ernerges in the system and shows that the capacity of self-organization is maximized when the agents' behaviors are heterogeneous. Secondly, we propose to study the system's response when market shock is simulated. in both cases, numerical results are presentedI and analyzed, showing how the global market behavior emerges from specific individual behavior interactions.Our results notably show that the emergence of collective herding behavior when market shock occurs leads to a temporary disruption on the system self-organization. Finaily, numerical simulations highlight that our artificial financial market can be able to absorb strong mono-shock but be lead to the rupture by low but repeated perturbations.
304

Contribution à l'étude des conséquences économiques des divulgations d'information en matière de franchissements de seuils de contrôle / Contribution to the study of the economic consequences of blockholder ownership disclosure.

Gueguen, Simon 09 December 2016 (has links)
La question du niveau optimal de transparence sur les marchés financiers a trouvé un terrain de débat exemplaire : celui de la propriété économique des sociétés cotées. La conception de nouveaux produits financiers et le développement de stratégies activistes ont provoqué une remise en question des règles de déclaration de franchissements de seuils de contrôle. Cette thèse analyse les conséquences économiques des évolutions réglementaires, évalue la pertinence des déclarations de l’acquéreur, et propose un nouveau cadre conceptuel intégrant la possibilité de comportements stratégiques des acteurs concernés. Selon nos résultats empiriques, les informations contenues dans les annonces sont pertinentes, même lorsque le blockholder s’engage à rester passif. Notre modèle théorique suggère que les blockholders utilisent le délai de déclaration de manière stratégique, et qu’un raccourcissement de ce délai serait favorable aux actionnaires minoritaires. / The debate on the optimum level of transparency in financial markets found a major point of controversy: the ownership of public companies. The design of new financial products and the development of shareholder activism called the blockholding disclosure rules into question. This thesis analyzes the economic impact of changes in regulation, measures the value relevance of the content of blockholding announcements, and introduces a new conceptual framework allowing strategic behavior of the involved economic agents. According to our empirical results, the information disclosed by blockholders are value relevant, even when the blockholder commits to remain passive. Our theoretical model suggests that blockholders make a strategic use of the reporting window, and predicts that a shortening of the legal time period would be favorable to minority shareholders.
305

Empirical investigations into corporate reporting in Europe: A financial market perspective on determinants and consequences of sustainability and digital reporting

Ottenstein, Philipp 07 January 2022 (has links)
This paper-based dissertation comprises five essays dealing with corporate sustainability and digital reporting and is structured in six chapters. The first chapter is the introduction and provides an overview of the structure and aims of the dissertation, lays out the contribution of the work, and introduces the five manuscripts. The second chapter, respectively the first manuscript, deals with the consequences of mandatory sustainability reporting in Europe. Specifically, the study deals with the question whether Directive 2014/95/EU has achieved its objectives of increasing reporting quantity and quality. In the third chapter, the sustainability reports of the largest European firms are analyzed using computer-aided text analysis. This study investigates whether and how external assurance of sustainability reports is beneficial from the viewpoint of report transparency, which is proxied by reporting scope, optimism, and readability. In the fourth chapter, the role of corporate sustainability in the context of M&A transactions is examined, precisely whether sustainability influences the premia paid in M&A transactions. The fifth and the sixth chapters center around the voluntary usage of online financial reporting (OFR) in Europe. While the fifth chapter is concerned with the usage and empirical determinants of OFR, the analysis in the sixth chapter examines the impact of OFR on the financial market, specifically on analyst following and stock liquidity.
306

Implications of Corporate Social Responsibility on Financial Markets’ Anticipations in the Context of M&A Announcements: International Evidence from the Market for Corporate Control

Jost, Sébastien 09 December 2022 (has links)
Over the last decades, Mergers and Acquisitions (M&A) have become key strategic alternatives to organic growth, enabling firms to expand in new geographies, broaden their product or service portfolios, increase their market power or diversify their business activities, for instance. Historically, although M&A deals have occurred in cyclical patterns, the number of transactions as well the total amount invested have followed an increasing trend. For instance, in 2021, the number of M&A deals conducted worldwide even peaked at an absolute record of 63,215 deals, for a total amount of $5,800 billion, comparable to the annual GDP of a country like Japan. Although the literature on M&A is vast and multi-disciplinarian, the performance of such transactions as well as their influencing factors have remained debated issues. This paper-based dissertation investigates the implications of corporate social responsibility (CSR) on financial markets’ anticipations in the context of M&A announcements. The first manuscript (Manuscript A) corresponds to a literature review on the determinants to financial markets’ reactions around M&A announcements. The second manuscript (Manuscript B) investigates the impact of both acquirers- and targets’ CSR engagements as well as their CSR profiles distance on synergetic gains anticipated by financial markets around M&A announcements. The third manuscript (Manuscript C) focuses on the impact of acquiring firms’ CSR engagement on the accuracy of financial markets’ anticipations with regards to the long-term operating performance of M&A deals. The fourth manuscript (Manuscript D) analyses whether acquirers’ CSR performance impacts M&A premia, since the premia offered to target shareholders contain acquiring managements’ anticipations regarding potential synergetic gains and are by the way critical to the deals’ value creation processes.
307

Исследование и применение моделей глубокого машинного обучения для анализа и прогнозирования краткосрочных ценовых движений на финансовых рынках : магистерская диссертация / Investigation and Application of Deep Machine Learning Models for Analyzing and Predicting Short-term Price Movements in Financial Markets

Крупский, А. В., Krupskii, A. V. January 2024 (has links)
В данной выпускной квалификационной работе исследованы и применены модели глубокого машинного обучения для анализа и прогнозирования краткосрочных ценовых движений на финансовых рынках. Основной целью работы является изучение эффективности использования глубоких нейронных сетей, таких как сверточные нейронные сети (CNN) и рекуррентные нейронные сети (RNN), для прогнозирования ценовых движений. Исследование основано на данных, полученных с API Tinkoff, включающих 7 269 изображений временных рядов и файлов CSV, разделенных на три класса: buy, sell и neutral. В работе были рассмотрены три модели: CNN с механизмом внимания, CNN с двумя путями и RNN с использованием GRU. Новизна исследования заключается в использовании моделей, обрабатывающих временные ряды как изображения, что является новаторским подходом и открывает новые перспективы для повышения точности и скорости прогнозов. Результаты показали, что модели глубокого машинного обучения могут эффективно анализировать и прогнозировать краткосрочные ценовые движения. Модель RNN с использованием GRU продемонстрировала наилучшую точность (94.67%) и низкие потери (0.13). Модель CNN с двумя путями также показала хорошие результаты с точностью 82.67% и потерями 0.72. Модель CNN с механизмом внимания, несмотря на более умеренные результаты, обладает потенциалом для дальнейшего улучшения благодаря способности фокусироваться на наиболее значимых частях данных. Применение глубоких нейронных сетей может значительно улучшить точность и оперативность торговых стратегий. Разработанные модели могут быть использованы трейдерами и финансовыми аналитиками для повышения эффективности принятия решений на высоковолатильных рынках. / This master's thesis investigates and applies deep machine learning models for analyzing and predicting short-term price movements in financial markets. The main goal of the work is to study the effectiveness of using deep neural networks, such as convolutional neural networks (CNN) and recurrent neural networks (RNN), for predicting price movements. The study is based on data obtained from the Tinkoff API, including 7,269 time series images and CSV files divided into three classes: buy, sell, and neutral. The work considered three models: CNN with attention mechanism, CNN with dual paths, and RNN with GRU. The novelty of the research lies in the use of models that process time series as images, which is an innovative approach and opens new prospects for improving the accuracy and speed of forecasts. The results showed that deep machine learning models can effectively analyze and predict short-term price movements. The RNN model with GRU demonstrated the highest accuracy (94.67%) and low losses (0.13). The CNN model with dual paths also showed good results with an accuracy of 82.67% and losses of 0.72. The CNN model with attention mechanism, despite more moderate results, has the potential for further improvement due to its ability to focus on the most significant parts of the data. The application of deep neural networks can significantly improve the accuracy and timeliness of trading strategies. The developed models can be used by traders and financial analysts to enhance decision-making efficiency in highly volatile markets.
308

Approximation of Stochastic Partial Differential Equations with Applications to Order Book Modelling

Starovoitovs, Konstantins 03 January 2025 (has links)
In den heutigen Finanzmärkten werden die meisten Transaktionen über elektronische Limit-Order-Bücher abgewickelt. Die mathematische Modellierung dieser Order-Bücher ist grundlegend für die Analyse der Marktmikrostruktur, die die detaillierten Mechanismen und Verhaltensweisen der Finanzmärkte auf einer granularen Ebene beschreibt. Insbesondere ist das Verständnis der Funktionsweise von Limit-Order-Büchern entscheidend für das Verständnis von Preisbildung, Liquiditätsbereitstellung und Markteffizienz. Diese Arbeit befasst sich mit zwei Fragestellungen: Im ersten Projekt erstellen wir Approximationen erster und zweiter Ordnung für ein unendlich-dimensionales Limit-Order-Buch-Modell in einem "kritischen" Skalierungsregime, bei dem Market- und Limit-Orders in ähnlicher Frequenz in das Order-Buch eingestellt werden. Die Approximation erster Ordnung ist durch ein gekoppeltes ODE-PDE-System gegeben, während die Approximation zweiter Ordnung durch eine nicht-degenerierte unendlich-dimensionale stochastische Evolutiongleichung beschrieben wird, die von einer zylindrischen Brownschen Bewegung getrieben wird. Wir beweisen, dass die Evolutiongleichung eine eindeutige Lösung besitzt, und zeigen, dass die Folge der reskalierten Limit-Order-Buch-Modelle schwach gegen diese Lösung konvergiert. Ein Nachteil des Modells ist, dass ohne zusätzliche Einschränkungen der Koeffizienten nicht garantiert ist, dass das Volumen über die Zeit nicht-negativ bleibt, was jedoch eine wünschenswerte Eigenschaft für Limit-Order-Buch-Modelle ist. Darüber hinaus könnte es in Märkten mit geringer Liquidität sinnvoll sein, größere Lücken zwischen den eingestellten Aufträgen in das Modell zu integrieren. Im zweiten Teil der Arbeit konstruieren wir deshalb nicht-negative Martingallösungen für eine SPDE, die sogenannte stochastische Poröse-Medien-Gleichung, die bei null ein reflektiertes und "klebriges" Verhalten aufweisen. / In today's financial markets, most transactions are processed via electronic limit order books. The mathematical modeling of these order books is fundamental for the analysis of the market microstructure, which describes the detailed mechanisms and behavior of financial markets at a granular level. In particular, a clear understanding of how limit order books function is crucial for the understanding of price formation, liquidity provision, and market efficiency. The objectives of this thesis are twofold. First, we establish a first and second-order approximation for an infinite dimensional limit order book model in a single ("critical") scaling regime, where market orders and limit orders occur on the same time scale. For this scaling, we achieve non-degenerate approximations at both, first and second-order level for the price and the volume dynamics. The first-order approximation results in a coupled ODE-PDE system, while the second-order approximation can be described through a non-degenerate infinite-dimensional stochastic evolution equation driven by a cylindrical Brownian motion. A drawback of the considered model is that without further restrictions on the coefficients it is not guaranteed that the volume will remain non-negative, which is a desirable feature for limit order book models. Moreover, in markets characterized by low liquidity, it may be sensible to integrate significant gaps between standing orders. In the second part of the thesis, we therefore construct non-negative martingale solutions to an SPDE, the so-called stochastic porous medium equation, which exhibit sticky-reflected behavior at zero.
309

Qui dit le droit ? Etude comparée des systèmes d'autorité dans l'industrie des services financiers islamiques. Une analyse comparée des modes d'autorité en finance islamique en Asie du Sud-est, au sein des pays arabes du Conseil de Coopération du Golfe, en Asie du Sud. / The law of which land ? A comparative study of authority systems in the islamic financial services industry

Gintzburger, Anne-Sophie 04 July 2013 (has links)
Les trois monothéismes conçoivent un Dieu créateur et ordonnateur du monde, révélé dans l’histoire, garant de toute justice et de tout équilibre, et déterminant l’autorité et les systèmes d’autorités. La théologie a informé le droit et les lois, l’économie et l’éthique des personnes et des États. L’islam, loin d’être homogénéisé dans ses approches économiques, financières et réglementaires, révèle par le biais d’un exemple concret, par l’industrie des services financiers islamiques, les différentes facettes de ce qu’est l’autorité dans un contexte musulman, international et en pleine évolution. Prenant en compte la dynamique des questions sectaires, géographiques et interprétatives, la thèse analyse cette force déterminante que sont les « autorités » en finance islamique. Ces dernières semblent déterminer la finance islamique dans ses formes les plus tangibles, en structurant des produits financiers islamiques. L’analyse comporte d’abord une approche théorique, ensuite une étude comparée des facteurs qui déterminent les décisions prises lors de la structuration de produits financiers islamiques. Ces structures sont en effet fondées sur des contrats financiers conformes aux principes de la sharia. Leur approbation par des membres de conseils de la sharia est-elle déterminée par une autorité régionale, par des autorités internationales ou par des autorités de régulation ? Ces autorités sont-elles conventionnelles ou religieuses ? Afin de bien évaluer la problématique non seulement de l’autorité en tant que telle mais aussi de l’équilibre complexe entre les différentes autorités, nous développons une analyse comparée du système de structuration des produits financiers islamiques par les autorités concernées, en fonction des zones géographiques, au moyen d’un échantillon de 121 membres de conseils de la sharia couvrant l’approbation de produits financiers islamiques au sein de 243 institutions financières islamiques sur 35 pays. / The three monotheistic religions refer to a God who is the all-powerful creator of all that exists, revealed throughout history, guarantor of justice and fairness, who is the ultimate moral authority. Theology advises some of the laws, economics and ethics of individuals and of states. Islam is not homogeneous in its economic, financial and regulatory approaches. However, through the financial services industry, it reveals in a tangible manner various facets of authority across Muslim contexts. These include contexts that are international and highly dynamic. Taking into account the delicate balance between sectarian, geographic and interpretive facets, the thesis analyses the determining forces that we refer to as authorities in Islamic finance. These contribute to the Islamic finance industry in its most tangible form in the structuring of Islamic financial products. Analysis is carried out initially theoretically. It is followed by a comparative study of factors affecting decisions pertaining to the structuring of Islamic financial products. These structures are based on financial contracts that conform to the principles of the Sharia. Is approval by Sharia board members fashioned by a regional authority, by international authorities, or by regulatory authorities? Are these authorities conventional or religious? We address the question as it pertains to the dynamics between various types of authority. We develop a comparative analysis of the approach taken in structuring Islamic financial products, according to geographical areas related to a sample of 121 Sharia board members covering Islamic financial products for 243 Islamic financial institutions in 35 countries.
310

Les investisseurs protégés en droit financier / Protected investors in financial law

Tehrani, Adrien 29 October 2013 (has links)
En droit financier, la conception des investisseurs protégés apparaît imprécise, alors que le dispositif juridique de protection est composé d’un grand nombre de mesures. Le contraste est saisissant. La première partie de cette recherche souligne la nécessité d’une clarification. Le flou entourant les investisseurs protégés est détaillé et ses conséquences sur l’objectif de protection, d’une part, et sur le dispositif de protection, d’autre part, sont mises en lumière. Plusieurs questions se posent, relatives à la notion d’investisseur comme à la logique et aux critères de protection. Source d’insécurité juridique, une conception indéterminée des investisseurs protégés pèse de différentes manières sur la qualité de la protection. La seconde partie est un essai de clarification qui porte sur la notion juridique d’investisseur, d’une part, et sur la politique juridique de protection, d’autre part. Il est ainsi proposé d’introduire une définition légale de l’investisseur dans le Code monétaire et financier, en s’appuyant sur les notions de sujet de droit et d’acte d’investissement. Une définition juridique de l’acte d’investissement contribue aussi à distinguer la notion juridique d’investisseur, d’un côté, et celles d’actionnaire, de client et de consommateur, de l’autre. La politique de protection envisagée ensuite s’appuie sur des axes connus mais qui gagnent à être réaffirmés et précisés. La pleine mise en oeuvre de cette politique impose alors, compte tenu aussi des catégories redéfinies d’investisseur et d’investisseur qualifié, d’élaborer une nouvelle catégorie juridique d’intervenants sur les marchés financiers. / In financial law, the conception of “protected investors” appears to reveal many uncertainties while at the same time, investor protection measures are numerous. This raises a number of questions. The first part of this research shows that there is a need to clarify this conception. Such a need results mainly from the detailed description of existing uncertainties and their negative consequences on investor protection objective and measures. These difficulties, which are about the concept of investor, the logic of the protection and its criteria, are a source of legal uncertainty. As a result, the quality of the protection is undermined in many different ways. The second part of this research is an attempt to clarify these points. It focuses on the legal concept of investor and on investor protection policy. The idea is to amend the legislative part of the French Monetary and Financial Code to introduce a definition of the word « investor », which relies on the suggestion that an investor should have legal personality and that there should be an act of investment. The legal definition suggested for the concept of “act of investment” also helps to draw distinctions between the legal concept of investor on the one hand, and those of shareholder, client and consumer, on the other hand. The investor protection policy which is then described lies on grounds that may look familiar, but to state them more precisely appears to be useful. For this policy to be fully implemented, and taking into account the definitions or amendments brought to the categories of “investor” and of “qualified investor”, a new legal category of actors in the financial markets needs to be elaborated.

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