Submitted by Rafael Santana (rafael.silvasantana@ufpe.br) on 2017-04-18T18:39:39Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação (2016-03-04) - KLIVER LAMARTHINE ALVES CONFESSOR.pdf: 1386264 bytes, checksum: 187856adab13aa330884ca934200e20d (MD5) / Made available in DSpace on 2017-04-18T18:39:39Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação (2016-03-04) - KLIVER LAMARTHINE ALVES CONFESSOR.pdf: 1386264 bytes, checksum: 187856adab13aa330884ca934200e20d (MD5) Previous issue date: 2016-03-04 / Este estudo tem o objetivo de analisar se a inclusão do fator Payout no modelo de três fatores de Fama e French (1993) é relevante para explicação do retorno das empresas cotadas na BM&FBOVESPA entre o período de 2004 e 2014. O Payout avalia o nível de pagamento de dividendos. O prêmio pelo fator Payout é obtido pela diferença dos retornos entre as empresas que pagaram Payout Incremental – percentual de dividendos maior do que versa a legislação – e o retorno daquelas empresas que não pagaram dividendos. O método utilizado nesse trabalho baseia-se no modelo de Fama e French (1993), onde o fator Payout foi adicionado aos fatores prêmio pelo risco de mercado (RM-RF), prêmio pelo fator tamanho (SMB) e prêmio pelo fator book-to-market (HML) criando um novo modelo de 4 fatores. O poder explicativo desse modelo foi testado em face do retorno de 12 carteiras criadas a partir da ortogonalização dos desses fatores. Os resultados indicam que o fator Payout é significativo no modelo e que este fator geralmente possui uma relação negativa com o retorno das carteiras. O modelo consegue explicar melhor o retorno de sete dentre as doze carteiras estudadas, dessas destacam-se as carteiras de pequenas, de alto valor e que pagaram dividendos incrementais, pequenas, de baixo valor e que pagaram dividendos incrementais, pequenas, de baixo valor e que não pagaram dividendos, com um poder explicativo de mais de 70%. Para as carteiras grande, de alto valor e que não pagaram dividendos, grande, de baixo valor e que não pagaram dividendos, pequenas, de baixo valor e que pagaram dividendos mínimo, pequenas, de alto valor e que não pagaram dividendos, o modelo explica o retorno em mais de 50% com as variáveis apresentadas. A variável Payout não foi significativa apenas para a carteira pequena, de baixo valor e que pagaram dividendos. Portanto, a inclusão do fator Payout ao modelo de Fama e French (1993) possui relevância para os estudos de avaliação de portfólios. Este estudo contribui para as discussões e aprimoramento dos modelos de precificação de ativos no mercado brasileiro. / This study aims to analyze whether the inclusion of the Payout factor on the three factors of Fama and French (1993) is relevant to an explanation of the return of the companies listed on the BM&FBOVESPA between 2004 and 2014. The Payout evaluates the level of payment of dividends. The premium of the Payout’s factor is obtained by the difference of returns among the companies that paid the dividend percentage – Incremental Payout higher than what legislation suggests – and the return of the companies that did not pay dividends. The method used in this paper is based on Fame and French (1993) model’s, which the Payout factor was added to by the market risk premium (RM-RF), an award by the factor (SMB) size and prize for the book-to-market factor (HML) creating a new model of 4 factors. The explanatory power of this model was tested in the face of the return of 12 portfolios created by orthogonalizing these factors. The results indicate that the Payout factor is significant in the model and that this factor generally has a negative relationship with the return of portfolios. The model can explain better the return of seven from twelve portfolios studied. From these portfolios stands out portfolios with little value, high value and that paid dividends, small, low-value and that paid dividends, small, low-value and that did not pay dividends, with an explanatory power of over 70%. For great portfolios, high value and that did not pay dividends, large, low-value and that did not pay dividends, small, low-value and that paid minimum dividends, small, high value and that did not pay dividends, the model explains the return in more than 50% with the variables presented. The variable Payout was not significant for small, low portfolio value and that paid dividends. Therefore, the inclusion of the Payout factor model of Fame and French (1993) has relevance to portfolio assessment studies. This study contributes to the discussion and improvement of asset pricing models in the Brazilian market.

Desde a adoção das normas internacionais de relatórios financeiros (IFRS) no Brasil, em 2010, a discussão sobre a classificação de instrumentos financeiros entre instrumentos de dívida ou de patrimônio tem se intensificado. Quando a Lei 11.638/07 foi emitida, alterando a Lei das Sociedades por Ações de 1976, teve o condão de introduzir o padrão contábil internacional na contabilidade brasileira. Entretanto, muitos dos instrumentos e aspectos da legislação societária brasileira não foram alterados ou reavaliados à luz desse novo padrão. De um momento para o outro, empresas se viram obrigadas a classificar como dívida, valores antes classificados com patrimônio líquido, como foram os diversos casos de ações resgatáveis. A própria classificação das ações ordinárias e preferenciais como instrumentos de patrimônio líquido foi colocada em dúvida devido à previsão do chamado dividendo mínimo obrigatório. Nesse ínterim, companhias abertas brasileiras emitiram certos instrumentos financeiros, analisaram e os classificaram como instrumentos de patrimônio líquido. Entretanto, tiveram tal classificação questionada pela CVM e foram requeridas a refazer suas demonstrações financeiras. Mesmo internacionalmente essa classificação não é, muitas vezes, óbvia. As últimas discussões no âmbito internacional relacionados com a classificação de instrumentos financeiros como de dívida ou de patrimônio se concentraram em duas abordagens: a \"abordagem restrita do patrimônio líquido\" (Narrow Equity Approach) e a \"abordagem estrita do passivo\" (Strict Obligation Approach). Este trabalho tem como objetivo avaliar a classificação dos instrumentos financeiros patrimoniais previstos na legislação societária brasileira à luz das normas internacionais de relatórios financeiros. Primeiramente entendendo e avaliando os casos de determinação da CVM de refazimento das demonstrações financeiras de companhias em virtude de classificação considerada inadequada de certos instrumentos financeiros como de patrimônio líquido. Em seguida, avaliando a natureza dos instrumentos patrimoniais previstos na legislação societária brasileira, especialmente as ações com dividendos prioritários, e o impacto dessa prioridade nas demonstrações financeiras das companhias. Com base nos resultados do estudo, concluiu-se que os casos de refazimento estavam relacionados a uma tentativa de classificar instrumentos típicos de dívida como patrimoniais, a partir da alteração de certos termos, mas sem atender a todos os requisitos da norma contábil. Adicionalmente, para as companhias com ações preferenciais com dividendos prioritários, observamos que os instrumentos atendiam a classificação de patrimônio líquido e que a prioridade no recebimento trouxe benefícios de fato para os seus detentores. / Since the adoption of the International Financial Reporting Standards in Brazil, in 2010, the discussion on the classification of financial instruments between debt or equity instruments has intensified. When the law 11,638/07 was issued, changing the Brazilian Corporate Law of 1976, had the effect of introducing international accounting standards in the Brazilian accounting environment. However, many of the instruments and aspects of Brazilian corporate legislation have not changed or reassessed in the light of this new standard. From one moment to the next, companies were required to reclassify amounts from equity to debt, as were the various cases of redeemable shares. Even the classification of ordinary and preferred shares as equity instruments was questioned due to the statutory minimum mandatory dividend. In the meantime, Brazilian listed companies have issued certain financial instruments, analyzed and classified them as equity instruments. However, they had such a classification questioned by the Brazilian Securities and Exchange Comission (CVM) and were required to restate their financial statements. Even internationally, this classification is not often obvious. The latest discussions in the international forum related to the classification of financial instruments as debt or equity focused on two approaches: the Narrow Equity Approach and the Strict Obligation Approach. This study aims to evaluate the classification of equity financial instruments as per the Brazilian corporate legislation in light of the International Financial Reporting Standards. Firstly, understanding and evaluating the cases of restatement of the financial statements of companies as determined by CVM due to misclassification of certain financial instruments as equity. Then, assessing the nature of equity instruments as per the Brazilian corporate legislation, especially the shares with priority dividends, and the impact of this priority in the financial statements of the company. Based on the results of the study, it was concluded that the restatements were related to the attempt of classifying typical debt instruments as equity, by amending certain of their terms, but not meeting all the requirements of the relevant accounting standard. Additionally, for companies with preferred shares with priority dividends, we observed that the instruments were classified as equity and that the priority has effectively brought benefits to these shareholders.

Submitted by Cristiano Forti (crforti@gmail.com) on 2013-02-20T17:15:40Z No. of bitstreams: 1 Tese Doutorado 2012 - Versão Final.pdf: 1027415 bytes, checksum: 2fa17755a9aff4536228a46badc3d5f2 (MD5) / Approved for entry into archive by Suzinei Teles Garcia Garcia (suzinei.garcia@fgv.br) on 2013-02-20T17:46:28Z (GMT) No. of bitstreams: 1 Tese Doutorado 2012 - Versão Final.pdf: 1027415 bytes, checksum: 2fa17755a9aff4536228a46badc3d5f2 (MD5) / Made available in DSpace on 2013-02-20T18:30:20Z (GMT). No. of bitstreams: 1 Tese Doutorado 2012 - Versão Final.pdf: 1027415 bytes, checksum: 2fa17755a9aff4536228a46badc3d5f2 (MD5) Previous issue date: 2012-10-24 / This study investigates whether the composition of bank debt affects payout policy. I identify that information-sensitive depositors (Institutional Investors) are targets of dividend signaling by banks. I use a unique database of Brazilian banks, for which I am able to identify several types of debtholders, namely Institutional Investors, nonfinancial firms and individuals, which are potential targets of dividend signaling. I also exploit the features of the Brazilian banking system, such as the existence of several closely held banks, owned and managed by a small group of shareholders, for which shareholder-targeted signaling is implausible, and find that banks that rely more on information-sensitive (institutional) depositors for funding pay larger dividends, controlling for other features. During the financial crisis, this behavior was even more pronounced. This relationship reinforces the role of dividends as a costly and credible signal of the quality of bank assets. I also find that payout is negatively related to the banks’ cost of funding (interest rates paid on certificates of deposits), that dividends have a positive relationship with size and past profitability and that closely held banks pay more dividends than publicly traded banks, a finding that is also in line with the idea that depositors are targets of dividend-signaling. Finally, I find a negative relationship between dividends and the capital adequacy ratio, which indicates that regulatory pressure may induce banks to pay less dividends and that payouts are negatively related to the growth of the loan portfolio, consistent with the idea of banks retaining earnings to increase equity and thus their lending capacity. / Esta tese investiga se a composição do endividamento dos bancos afeta sua política de dividendos. Identificou-se que investidores sensíveis a informações (investidores institucionais) são alvos de sinalização através de dividendos por parte dos bancos. Utilizando uma base de dados exclusiva de bancos brasileiros, foi possível identificar vários tipos de credores, especificamente, investidores institucionais, empresas não financeiras e pessoas físicas, que são alvos potenciais de sinalização por dividendos. Adicionalmente, a existência de vários bancos de capital fechado, controlados e geridos por um pequeno grupo de acionistas, em que a sinalização direcionada a acionistas é implausível, permite inferir que bancos que utilizam mais fundos de investidores sensíveis a informações (institucionais) pagam mais dividendos, controlando por diversas características. Durante a crise financeira, este comportamento foi ainda mais pronunciado. Esta relação reforça o papel dos dividendos como uma forma custosa e crível de comunicar sobre a qualidade dos ativos dos bancos. A hipótese de que os dividendos podem ser utilizados como uma forma de expropriação dos depositantes por parte dos acionistas é refutada, uma vez que, se fosse esse o caso, observar-se-ia esse maiores dividendos em bancos com depositantes menos sensíveis a informação. Além disso, foi verificada uma relação negativa entre o pagamento de dividendos e o custo de captação (juros pagos em certificados de depósito bancário) e uma relação positiva de dividendos com o tamanho e com os lucros passados, e que os bancos de capital fechado pagam mais dividendos do que os de capital aberto, uma descoberta que também se alinha com a ideia de que os depositantes seriam os alvos da sinalização por dividendos. Finalmente, encontrou-se também uma relação negativa entre dividendos e adequação de capital do bancos, o que indica que pressões regulatórias podem induzir os bancos a pagar menos dividendos e que o pagamento de dividendos é negativamente relacionado com o crescimento da carteira de crédito, o que é consistente com a ideia de que os bancos com maiores oportunidades de investimento retêm seus lucros para aumentar seu patrimônio líquido e sua capacidade de conceder crédito.

Deviations from arm’s length prices (prices charged between independent persons) charged between connected cross-border companies are corrected by primary transfer pricing adjustments, effected by the tax authorities of a country, resulting in secondary transactions classified as constructive loans, constructive dividends or constructive equity contributions. Tax could be imposed on the secondary transaction, giving rise to a secondary adjustment. For years of assessment commencing on 1 April 2012 secondary transactions, previously regarded as constructive dividends with Secondary Tax on Companies, were amended to be treated as constructive loans with interest adjustments. The primary research problem addressed by this literature study was to establish whether the constructive loan is the appropriate treatment of secondary transfer pricing transactions in the South African context and if not, whether the other alternatives suggested by the Organisation for Economic Co-operation and Development (“OECD”) guidelines should be considered. The OECD suggests that a transaction should be characterised in accordance with its substance. Determination of the subjective economic substance may be established by the motives of multinational groups for setting transfer prices. Multinational groups could have various motives for setting transfer prices that deviate from the arm’s length principle, influencing the economic substance of secondary transactions. In order to determine if the treatment of a secondary transaction, as a constructive loan, would be appropriate and reflect the economic substance of adjustments arising as a result of these motives, the characteristics of each alternative were analysed. The characteristics determined for each of the alternatives were then applied to the economic substance arising from a motive, to determine the appropriateness of each of the alternatives as a secondary transaction. Based on the motives for entering into these transactions, an analysis was performed. The findings led to the conclusion that in the case of the economic substance of transactions, which give rise to transfer pricing adjustments, a constructive dividend appears to be the appropriate treatment for a secondary transaction in most circumstances, as opposed to the constructive loan currently applied by South Africa. Constructive loans or constructive equity contributions may be reflective of the economic substance in exceptional circumstances. The study makes recommendations that South Africa should consider amending the current treatment of a secondary transaction as a constructive loan, to a constructive dividend. It was also recommended that overlapping criteria in the dividend definition be eliminated and that further research should be undertaken in order to determine how the exceptional circumstances for characterisation as a constructive loan or constructive equity contribution, should be provided for in the Income Tax Act (58 of 1962). / MCom (South African and International Taxation), North-West University, Potchefstroom Campus, 2014

Deviations from arm’s length prices (prices charged between independent persons) charged between connected cross-border companies are corrected by primary transfer pricing adjustments, effected by the tax authorities of a country, resulting in secondary transactions classified as constructive loans, constructive dividends or constructive equity contributions. Tax could be imposed on the secondary transaction, giving rise to a secondary adjustment. For years of assessment commencing on 1 April 2012 secondary transactions, previously regarded as constructive dividends with Secondary Tax on Companies, were amended to be treated as constructive loans with interest adjustments. The primary research problem addressed by this literature study was to establish whether the constructive loan is the appropriate treatment of secondary transfer pricing transactions in the South African context and if not, whether the other alternatives suggested by the Organisation for Economic Co-operation and Development (“OECD”) guidelines should be considered. The OECD suggests that a transaction should be characterised in accordance with its substance. Determination of the subjective economic substance may be established by the motives of multinational groups for setting transfer prices. Multinational groups could have various motives for setting transfer prices that deviate from the arm’s length principle, influencing the economic substance of secondary transactions. In order to determine if the treatment of a secondary transaction, as a constructive loan, would be appropriate and reflect the economic substance of adjustments arising as a result of these motives, the characteristics of each alternative were analysed. The characteristics determined for each of the alternatives were then applied to the economic substance arising from a motive, to determine the appropriateness of each of the alternatives as a secondary transaction. Based on the motives for entering into these transactions, an analysis was performed. The findings led to the conclusion that in the case of the economic substance of transactions, which give rise to transfer pricing adjustments, a constructive dividend appears to be the appropriate treatment for a secondary transaction in most circumstances, as opposed to the constructive loan currently applied by South Africa. Constructive loans or constructive equity contributions may be reflective of the economic substance in exceptional circumstances. The study makes recommendations that South Africa should consider amending the current treatment of a secondary transaction as a constructive loan, to a constructive dividend. It was also recommended that overlapping criteria in the dividend definition be eliminated and that further research should be undertaken in order to determine how the exceptional circumstances for characterisation as a constructive loan or constructive equity contribution, should be provided for in the Income Tax Act (58 of 1962). / MCom (South African and International Taxation), North-West University, Potchefstroom Campus, 2014

Denna studies syfte är att testa om det finns ett statistiskt samband mellan det nominella aktiepriset och ex-dagseffekten på Nasdaq OMX Stockholm. Ett tydligt samband skulle därmed vara ett ytterligare motiv till företagens beslut om genomförandet av aktiesplit för att revidera aktiens nominella pris. Studiens hypotes lyder därför att det finns ett negativt samband mellan det nominella aktiepriset och ex-dagseffekten, som visats i tidigare studie på den amerikanska börsen NYSE. Studien har genomförts i positivistisk tradition genom statistiska analyser och tester för att klargöra ett eventuellt samband mellan den beroende variabeln ex-dagseffekten och den oberoende variabeln nominella priset. All empirisk data har hämtats från databasen Thomson Reuter Datastream, sammanställts i Excel kalkylblad, analyserats i statistikprogrammet MiniTab och redovisats i två uppsättningar. Studiens resultat visar inget samband mellan det nominella priset och ex-dagseffekten under perioden 2011 till 2015. Nollhypotesen kan inte förkastas och resultaten indikerar försumbar korrelation och förklaringsgrad genom regression. Resultatet är annorlunda från en tidigare studie som konstaterat ett tydligt samband mellan samma variabler på börsen i USA. Det teoretiska bidraget består främst av besvarandet av studiens syfte där det nominella prisets betydelse ter sig annorlunda på den svenska marknaden mot den amerikanska. Det praktiska bidraget från studien ger företagsledare för börsnoterade bolag samt fondbolag och aktörer på den finansiella marknaden en utökad kunskap om rådande förhållanden på marknaden för att förbättra beslutsunderlaget vid eventuella aktiesplittar eller investeringar. Som förslag till fortsatt forskning uppmuntras det att undersöka huruvida det nominella prisets betydelse skiljer sig mellan olika marknader. Förslagsvis kan framtida studier mäta effektiviteten på stockholmsbörsen på dagen för aktiesplit som också i teorin är en mätbar händelse på de finansiella marknaderna under rätt förutsättningar. / The aim of this study is to test for a correlated connection between the nominal stockprice and the price-drop-to-dividend ratio on the Swedish stock market Nasdaq OMX Stockholm. A strong correlated connection would be another motive for company managers to implement a stock split to reduce the nominal stock price. Therefore the hypothesis of the study is that there is a negative correlation between the two variables, just as shown in a recent study on the American stockmarket NYSE. This study has been computed with a positivistic approach through statistical tests and analysis to discover an eventual correlated connection between the dependent variable price-drop-to-dividend ratio and the independent variable nominal price. All empirical data was collected from Thomson Reuter Datastream, compiled in Excel worksheet, analyzed with statistical software MiniTab and presented in two sets of data. The result of this study shows no correlated connection between the nominal stock price and the pricedrop-to-dividend ratio during the period of 2011 to 2015. The null hypothesis can not be rejected and the results of the analysis indicate negligible correlation and coefficient of determination through regression, regardless which sets of data observed. The result is different to a recent study which has shown a significant correlated connection between the same two variables on the American stock market NYSE. The theoretical contribution comprises foremost of answering the aim of the study where the nominal prices impact acts differently on the Swedish stock market compared to the American. Also a presenting of the mean value of price-fall-to-dividend ratio for the period examined is a theoretical contribution. The practical contribution from this study give managers for listed companies along with fund managers and operators on the financial markets an increased knowledge about current influences on the market which improves their ability to make decisions about stock split and future investments. For future studies we suggest to do more research on how the impact of nominal prices differ among markets. Tentatively future research can measure the stockholm market efficiency on the day of stocksplit which according to theory is another measureable event on the financial markets under the right circumstances.

Denna studie visar utbetalningspolitiken hos företag noterade på Stockholmsbörsen år 2000-2015. Svensk utbetalningspolitik skiljer sig från utbetalningspolitiken i USA och inom EU. I Sverige fick återköp som utbetalningsform stor genomslagskraft år 2000 men trots detta är utdelningar fortsatt den dominerande utbetalningsformen idag. Vid en uppdelning i finansiella och industriella företag blir det tydligt att finansiella företag fått en allt mer betydelsefull roll inom svensk utbetalningspolitik. En ökad koncentration av det kassaflöde samtliga företag fördelar till aktieägare tycks inte kunna urskiljas på den svenska marknaden. Skiljer man på finansiella och industriella företag går det att se en ökad koncentration av det kassaflöde som fördelas av finansiella företag. År 2015 finns en stor andel mogna företag på Stockholmsbörsen vilket förklarar att total utbetalning av företag har ökat sedan 2000. Det framkommer genom att studera företagens kapitalstruktur och fas i den ekonomiska livscykeln. / This paper depicts payout policies of companies listed on the Stockholm Stock Exchange (SSE) 2000-2015. Payout policy in Sweden differs significantly from policy in the U.S. and the rest of the EU. In Sweden open market stock repurchases (OMR) came to be the dominant method of payout back in 2000. However, since then dividends have taken over the scene. Comparing financial and industrial corporations, makes it evident that financial corporations have come to gain prominence when it comes to shaping payout policy. It is not possible to entail an increasing concentration of cash flow that companies distribute to shareholders, when investigating the entire Swedish stock market. Dividing between the two sectors proves a heightened concentration of payouts among financial corporations. In 2015 mature companies have come to gain a greater share of SSE, which explains the increased number of dividend paying corporations since 2000. This becomes evident when examining the capital structure of the companies and their phase in the economic lifecycle.

Ce mémoire de maîtrise traite de la théorie de la ruine, et plus spécialement des modèles actuariels avec surplus dans lesquels sont versés des dividendes. Nous étudions en détail un modèle appelé modèle gamma-omega, qui permet de jouer sur les moments de paiement de dividendes ainsi que sur une ruine non-standard de la compagnie. Plusieurs extensions de la littérature sont faites, motivées par des considérations liées à la solvabilité. La première consiste à adapter des résultats d’un article de 2011 à un nouveau modèle modifié grâce à l’ajout d’une contrainte de solvabilité. La seconde, plus conséquente, consiste à démontrer l’optimalité d’une stratégie de barrière pour le paiement des dividendes dans le modèle gamma-omega. La troisième concerne l’adaptation d’un théorème de 2003 sur l’optimalité des barrières en cas de contrainte de solvabilité, qui n’était pas démontré dans le cas des dividendes périodiques. Nous donnons aussi les résultats analogues à l’article de 2011 en cas de barrière sous la contrainte de solvabilité. Enfin, la dernière concerne deux différentes approches à adopter en cas de passage sous le seuil de ruine. Une liquidation forcée du surplus est mise en place dans un premier cas, en parallèle d’une liquidation à la première opportunité en cas de mauvaises prévisions de dividendes. Un processus d’injection de capital est expérimenté dans le deuxième cas. Nous étudions l’impact de ces solutions sur le montant des dividendes espérés. Des illustrations numériques sont proposées pour chaque section, lorsque cela s’avère pertinent. / This master thesis is concerned with risk theory, and more specifically with actuarial surplus models with dividends. We focus on an important model, called the gamma-omega model, which is built to enable the study of both periodic dividend distributions and a non-standard type of ruin. We make several new extensions to this model, which are motivated by solvency considerations. The first one consists in adapting results from a 2011 paper to a new model built on the assumption of a solvency constraint. The second one, more elaborate, consists in proving the optimality of a barrier strategy to pay dividends in the gamma-omega model. The third one deals with the adaptation of a 2003 theorem on the optimality of barrier strategies in the case of solvency constraints, which was not proved right in the periodic dividend framework. We also give analogous results to the 2011 paper in case of an optimal barrier under the solvency constraint. Finally, the last one is concerned with two non-traditional ways of dealing with a ruin event. We first implement a forced liquidation of the surplus in parallel with a possibility of liquidation at first opportunity in case of bad prospects for the dividends. Secondly, we deal with injections of capital into the company reserve, and monitor their implications on the amount of expected dividends. Numerical illustrations are provided in each section, when relevant.

Dans cette thèse, nous traitons deux problèmes de contrôle optimal stochastique. Chaque problème correspond à une Partie de ce document. Le premier problème traité est très précis, il s'agit de la valorisation des contrats optionnels de vente de type Américain (dit Put Américain) en présence de dividendes discrets (Partie I). Le deuxième est plus général, puisqu'il s'agit dans un cadre discret en temps de prouver l'existence d'un principe de programmation dynamique sous des contraintes en probabilités (Partie II). Bien que les deux problèmes soient assez distincts, le principe de programmation dynamique est au coeur de ces deux problèmes. La relation entre la valorisation d'un Put Américain et un problème de frontière libre a été prouvée par McKean. La frontière de ce problème a une signification économique claire puisqu'elle correspond à tout instant à la borne supérieure de l'ensemble des prix d'actifs pour lesquels il est préférable d'exercer tout de suite son droit de vente. La forme de cette frontière en présence de dividendes discrets n'avait pas été résolue à notre connaissance. Sous l'hypothèse que le dividende est une fonction déterministe du prix de l'actif à l'instant précédant son versement, nous étudions donc comment la frontière est modifiée. Au voisinage des dates de dividende, et dans le modèle du Chapitre 3, nous savons qualifier la monotonie de la frontière, et dans certains cas quantifier son comportement local. Dans le Chapitre 3, nous montrons que la propriété du smooth-fit est satisfaite à toute date sauf celles de versement des dividendes. Dans les deux Chapitres 3 et 4, nous donnons des conditions pour garantir la continuité de cette frontière en dehors des dates de dividende. La Partie II est originellement motivée par la gestion optimale de la production d'une centrale hydro-electrique avec une contrainte en probabilité sur le niveau d'eau du barrage à certaines dates. En utilisant les travaux de Balder sur la relaxation de Young des problèmes de commande optimale, nous nous intéressons plus spécifiquement à leur résolution par programmation dynamique. Dans le Chapitre 5, nous étendons au cadre des mesures de Young des résultats dûs à Evstigneev. Nous établissons alors qu'il est possible de résoudre par programmation dynamique certains problèmes avec des contraintes en espérances conditionnelles. Grâce aux travaux de Bouchard, Elie, Soner et Touzi sur les problèmes de cible stochastique avec perte contrôlée, nous montrons dans le Chapitre 6 qu'un problème avec contrainte en espérance peut se ramener à un problème avec des contraintes en espérances conditionnelles. Comme cas particulier, nous prouvons ainsi que le problème initial de la gestion du barrage peut se résoudre par programmation dynamique / In this thesis, we address two problems of stochastic optimal control. Each problem constitutes a different Part in this document. The first problem addressed is very precise, it is the valuation of American contingent claims and more specifically the American Put in the presence of discrete dividends (Part I). The second one is more general, since it is the proof of the existence of a dynamic programming principle under expectation constraints in a discrete time framework (Part II). Although the two problems are quite distinct, the dynamic programming principle is at the heart of these two problems. The relationship between the value of an American Put and a free boundary problem has been proved by McKean. The boundary of this problem has a clear economic meaning since it corresponds at all times to the upper limit of the asset price above which the holder of such an option would exercise immediately his right to sell. The shape of the boundary in the presence of discrete dividends has not been solved to the best of our knowledge. Under the assumption that the dividend is a deterministic function of asset prices at the date just before the dividend payment, we investigate how the boundary is modified. In the neighborhood of dividend dates and in the model of Chapter 3, we know what the monotonicity of the border is, and we quantify its local behavior. In Chapter 3, we show that the smooth-fit property is satisfied at any date except for those of the payment of dividends. In both Chapters 3 and 4, we are able to give conditions to guarantee the continuity of the border outside dates of dividend. Part II was originally motivated by the optimal management of the production of an hydro-electric power plant with a probability constraint on the reservoir level on certain dates. Using Balder'sworks on Young's relaxation of optimal control problems, we focus more specifically on their resolution by dynamic programming. In Chapter 5, we extend results of Evstigneev to the framework of Young measures. We show that dynamic programming can be used to solve some problems with conditional expectations constraints. Through the ideas of Bouchard, Elie, Soner and Touzi on stochastic target problems with controlled loss, we show in Chapter 6 that a problem with expectation constraints can be reduced to a problem with conditional expectation constraints. Finally, as a special case, we show that the initial problem of dam management can be solved by dynamic programming

Submitted by Fabricia Fialho Reginato (fabriciar) on 2015-07-23T00:36:51Z No. of bitstreams: 1 GiselleBrasileiro.pdf: 3197721 bytes, checksum: 5d459f5204fc7090d6bba68ce98c2ae8 (MD5) / Made available in DSpace on 2015-07-23T00:36:51Z (GMT). No. of bitstreams: 1 GiselleBrasileiro.pdf: 3197721 bytes, checksum: 5d459f5204fc7090d6bba68ce98c2ae8 (MD5) Previous issue date: 2014 / Nenhuma / O principal objetivo desse trabalho foi o de identificar o comportamento das empresas brasileiras do setor elétrico em relação ao pagamento ou não de proventos na forma de JSCP. A amostra da pesquisa foi restrita às empresas brasileiras de capital aberto pertencentes ao setor de energia elétrica, conforme classificação da base de dados Economática. A amostra estudada foi de 59 empresas, no período entre os anos de 2007 e de 2012. Analisados os comportamentos destas empresas com relação à distribuição de proventos na forma de JSCP, foram aplicados questionários nas 43 empresas que apresentaram a menor eficiência nesta distribuição. A partir da estratificação destas empresas, foram realizados alguns testes estatísticos buscando estabelecer relações entre as diferenças de comportamento a partir de algumas possibilidades elencadas com base na revisão da literatura sobre o assunto. Os principais resultados encontrados foram: 1) Empresas estatais deixaram de se utilizar do benefício do pagamento de JSCP em percentual superior ao das demais empresas (significância a 1%); 2) Empresas mais endividadas pagaram mais JSCP do que as empresas menos endividadas, (significância a 10%); 3) Entre as empresas respondentes, o nível de dívida das empresas parece influenciar a decisão sobre o pagamento de JSCP (significância a 1%); 4) As empresas que disseram tomar a decisão sobre pagamento de JSCP antes de dezembro, e que deveriam, em tese, ser mais conservadoras na distribuição de JSCP, distribuíram maior percentual de JSCP do que as que tomam esta decisão antes (significância a 1%). / The main objective of this work was to identify the behavior of the Brazilian electric sector companies regarding payment of dividends or not in the form of ”JSCP”. The survey sample was restricted to Brazilian public companies belonging to the electric sector, as classified Economática data base. The sample was formed by 59 companies, in the period between the years 2007 and 2012. Analyzed the behavior of these companies regarding the distribution of dividends in the form of ”JSCP”, questionnaires were applied to 43 companies that had the lowest efficiency in this distribution. From the stratification of these companies, some statistical tests in order to establish relationships between the differences of behavior from some possibilities listed based on the literature review on the subject were made. The main findings were: 1) State-owned enterprises have ceased to be used from any payment of “JSCP” in above other firms (significant at 1%) percent; 2) more indebted companies pay more “JSCP” than less indebted companies, (significance at 10%), 3) Among the respondent companies, the level of corporate debt seems to influence the decision on the payment of “JSCP” (significant at 1%) 4) The companies said they make the decision on payment of ”JSCP” before December, and that would, in theory, be more conservative in the distribution of “JSCP”, distributed higher percentage of “JSCP” than taking this decision before (1% significance).