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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.
551

Factor Investing on the Swedish Stock Market : A Quantitative Study of a Model Based on Quality and Value

Adolfsson, Teodor, Domellöf, Henrik January 2018 (has links)
Investors and fund managers have, since the start of financial markets, always been on the lookout for new ways of beating the market. However, researchers of the Efficient Market Hypothesis have shown that markets are usually highly efficient, implying that there are few possibilities of earning returns that are higher than the market returns, on a risk adjusted basis. Prevailing theories, such as the Capital Asset Pricing Model, has shown that increased return must stem from taking on higher risk. Though, this model’s explanatory power has been challenged by numerous researchers who propose different factors, other than market risk, which could hold explanatory power when it comes to returns in the stock market. This area of research is called factor investing, and has shown that factors such as momentum, size, and value, all can lead to outperforming the market.This study examines how a model based on two common factors, quality and value, would have performed on the Swedish stock market. The study is based on five portfolios chosen by the quality and value factors, each one held for 5 years, examined over a 25-year time span and uses the capital asset pricing model as a tool to measure whether or not the selected factors outperform the market. The study has taken a quantitative approach to examining the research question, using a positivistic and objectivistic view.The results of the study show evidence that the quality and value factors can lead to significant outperformance relative to the market index. Both total returns and risk adjusted returns were higher than the market index for some of the portfolios created using the quality and value factors. Furthermore, statistical evidence was found of that CAPM not fully explains all returns, and thus, that the returns are in part explained by the quality and value factors. The findings led to the conclusion that the quality and value factors does, in fact, hold explanatory power beyond that of CAPM. Purchasing quality companies at a reasonable price is shown to be a sound investment strategy, and that a portfolio created using the quality and value factors has good chances of outperforming the market index.
552

Plötsligt händer det : En kvantitativ studie om efterfrågan på lotteriaktier i Sverige / Suddenly it happens : A quantitative study examining individual investors preference for lottery-type stocks in Sweden

Ehrenborg, Mattias, Naeve, Felix January 2018 (has links)
Tidigare studier i USA har påvisat ett positivt samband mellan individuella investerare som köper lotter och deras benägenhet att köpa aktier med liknande karaktärsdrag. Enligt klassisk finansteori bör inte individuella investerare äga så kallade lotteriaktier då de tenderar att generera negativ avkastning – trots detta äger många individuella investerare lotteriaktier. I denna studie undersöker vi om detta samband kan förklaras med hjälp av socioekonomiska faktorer som arbetslöshet, utbildningsnivå och spelutgifter på länsnivå. Studien behandlar uteslutande svenska data för socioekonomiska faktorer som utgörs av Sveriges befolkning, aktiedata som utgörs av dagliga stängningspriser för samtliga marknadsnoterade aktiebolag, och aktieägardata för samtliga marknadsnoterade aktiebolag som utgörs av svenska individuella investerare. Vidare är samtliga data insamlade från legitima datakällor för perioden 2012–2015. För att möjliggöra undersökandet av vilka individer som äger lotteriaktier väljer vi att definiera lotteriaktier i enlighet med tidigare studier, där lotteriaktier definieras som aktier med lågt pris, hög idiosynkratisk volatilitet och hög idiosynkratisk skevhet. Dessa egenskaper har visat sig attrahera riskbenägna investerare trots sin låga sannolikhet till hög vinst. Studien utgår från teorier inom behavioral finance där individers irrationella beslutsfattanden belyses. Teorier som prospect theory och cumulative prospect theory förklarar hur individer värderar vinster och förluster olika, samt hur individer tenderar att överskatta små sannolikheter och underskatta stora sannolikheter. Dessa teorier skapar ökad förståelse för varför individer agerar som de gör vid beslutsfattanden på finansiella marknader. Dessa teorier ställs i kontrast mot klassiska finansteorier som förutsätter att individer är rationella, kalkylerande och inte påverkas av irrationellt beteende eller känslor. Studiens resultat visar att i de län där antingen spelutgifter per capita är höga eller spelutgifter per nettoinkomst är höga är även andelen lotteriaktier hög, vilket överensstämmer med tidigare forskning i USA. Det visar sig även att antalet lotteriaktieägare och deras portföljexponering mot lotteriaktier ökar kraftigt under perioden, samtidigt som antal aktieägare i Sverige hålls relativt konstant under perioden, vilket indikerar ökande irrationalitet bland svenska individuella investerare på svenska finansiella marknader. / In this thesis, we examine individual investors preferences for lottery-type stocks between January 2012 and December 2015. Lottery-type stocks have shown to have similar characteristics to state lotteries through its low price, high idiosyncratic volatility and high idiosyncratic skewness in previous studies. These characteristics attract risk-seeking investors who aim for a small chance to win big. In detail, we analyze if there is a relationship between socioeconomic factors like unemployment rate, education, gambling expenditures per capita, gambling expenditures per net income and the propensity to hold lottery-type stocks in the individual stock portfolio in Sweden. The analysis is based on aggregated data of Swedish counties and the study is unique in regard to the Swedish stock market. Our results show that there is a positive significant relationship between gambling expenditures per capita, gambling expenditures per net income and a higher proportion of lottery-type stocks in the individuals stock portfolio within a county. These results show that socioeconomic factors that induce greater expenditures in lotteries are associated with greater investments in lottery-type stocks. Finally, our findings contradict the efficient market hypothesis and could thus be a contribution to the field of behavioral finance.
553

Påverkar frekvensen av återköp den abnormala avkastningen? : En eventstudie om annonseringar av återköpsprogram på den svenska aktiemarknaden

Blomstedt, Erika, Puputti, Helen January 2018 (has links)
Syfte: Tidigare forskning visar på en positiv abnormal avkastning på företagets aktiekurs vid återköp av aktier. Få studier har vidare undersökt om denna avkastning skiljer sig beroende på frekvensen av återköp. Området kring återköp av aktier är relativt outforskat i Sverige och sedan återköp blev tillåtet år 2000 har det varit en finanskris. Denna studie syftar därmed till att fylla ut forskningsgapet i Sverige med att studera återköp och dess påverkan på avkastningen på den svenska aktiemarknaden, med hänsyn till återköpsfrekvens. Studien är avgränsad till lågkonjunkturen mellan åren 2010-2014 för att se eventuell skillnad från tiden före finanskrisen. Metod: För att besvara studiens syfte har en eventstudie genomförts. Aktiekursdata för de företag som genomfört återköpsprogram under de studerade åren har samlats in från Nasdaq OMX Stockholm. Av dessa aktiekursdata har kumulativ abnormal avkastning beräknats för att jämföras mellan grupper och andra studier samt genomföra t-test och envägs-ANOVA. Studiens data består av 68 återköpsprogram fördelat på 41 företag som har delats in i frekvensbaserade grupper på ”1”, ”2-3” och ”4-5” stycken återköpsprogram. Resultat & slutsats: Studiens resultat stödjer den tidigare forskningen om att återköp ger en positiv abnormal avkastning. Resultatet stödjer även signaleringsteorin om att återköp signalerar undervärdering vilket leder till att investerare pressar upp aktiepriset. Resultatet visar däremot inget stöd till de studier som har visat på att återköpsfrekvensen ska ha betydelse för avkastningen eller att avkastningen skulle ha varit högre under lågkonjunktur. På grund av få och motsägande forskning kring detta behövs det mer forskning som kan förtydliga frekvensen och lågkonjunkturens påverkan på avkastningen. Examensarbetets bidrag: Det är intressant ur företagsekonomisk synpunkt att se vilken effekt återköp får på aktiepriset när företag funderar på att utnyttja bemyndigande om återköpsprogram. Denna studie visar att företag i Sverige kan förvänta sig en positiv abnormal avkastning vid annonsering av ett återköpsprogram, i likhet med andra miljöer. Studien visar även att frekvensens och lågkonjunkturens betydelse fortfarande är oviss. Förslag till fortsatt forskning: Eftersom studien endast har undersökt den kortsiktiga avkastningen vid återköp av aktier vore mer forskning kring den långsiktiga avkastningen intressant. Studien har inte heller studerat egenskaper hos företagen som gör återköp. Eventuella skillnader mellan företag som gör enstaka respektive frekventa återköp vore intressant att se. / Aim: Previous research has indicated that share repurchases result in a positive abnormal return on company's share price but only a few studies have examined further if return on share price differs depending on frequency of share repurchases. In Sweden share repurchases are quite unresearched field of study and after share repurchases became legal in 2000 there has been a financial crisis. This study aims to fulfil the research gap in Sweden and examine share repurchases' effect to return on share prices depending on frequency of share repurchase on Swedish stock market. Time period of the study has narrowed down to recession between years 2010-2014 to see eventual difference from time before recession. Method: To fulfil the aim of the study event study methodology has been used. The share data for companies that have repurchased shares in chosen time period has been collected from Nasdaq OMX Stockholm. Based on share data cumulative abnormal returns for every share repurchase group have been calculated to compare groups and different time periods. Cumulative abnormal returns are even used to accomplish t-test and one-way ANOVA. Data of the study consist of 68 share repurchase programs that were announced by 41 companies. Those 68 repurchase programs were distributed to three frequency based groups that were ”1”, ”2-3” and ”4-5” share repurchase programs. Result & Conclusions: Results of the study are consistent with the previous research about share repurchases resulting in a positive abnormal return. The results are also consistent with the previous research about repurchases signaling an undervalued stock which leads to an increase in interests from the investors. On the contrary this study is not consistent with the previous research about repurchase frequency and recession's impact to return. Because there are only a few studies about repurchasing frequency and recession's impact to return and the results of studies are contradictory, more research needs to be done. Contribution of the thesis: It is interesting to see which kind of effect share repurchases result in share price when company is utilizing authorization of share repurchase program. This study indicates that a company in Sweden can predict a positive abnormal return by announcing about repurchase program. The study indicates even that repurchase frequency and recession's impact to return are still uncertain. Suggestions for future research: As this study has only examined share repurchases' short-term effect to return on share price, it would be interesting to research long-term effect to return on share price. Also characteristics of companies that repurchase shares and eventual differences between companies that repurchase shares frequent and infrequent would be interesting to see.
554

Economia Comportamental aplicada a Finanças e o Modelo de Agentes: um estudo sobre a presença da subjetividade humana na tomada de decisão e suas implicações no mercado acionário / Behavioral Economics Applied to Finance and the Agent-Based Model: a study about human subjectivity presence in the decision-making and its implications in the stock market

Gallo, Érika Regina da Silva [UNESP] 09 September 2016 (has links)
Submitted by ERIKA REGINA DA SILVA GALLO null (erika.regina@hotmail.com) on 2016-09-15T19:21:48Z No. of bitstreams: 1 Versão Final.pdf: 1593845 bytes, checksum: e99e5b67cc74cf377bfd115091bec7e9 (MD5) / Approved for entry into archive by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br) on 2016-09-21T20:08:06Z (GMT) No. of bitstreams: 1 gallo_ers_me_arafcl.pdf: 1593845 bytes, checksum: e99e5b67cc74cf377bfd115091bec7e9 (MD5) / Made available in DSpace on 2016-09-21T20:08:06Z (GMT). No. of bitstreams: 1 gallo_ers_me_arafcl.pdf: 1593845 bytes, checksum: e99e5b67cc74cf377bfd115091bec7e9 (MD5) Previous issue date: 2016-09-09 / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / Neste trabalho temos a intenção de contribuir com o debate na área de economia e finanças comportamentais ao realizar um estudo sobre o comportamento do mercado acionário ao incluirmos o viés de comportamento aversão à perda aos agentes que ali operam. Para tanto, em um primeiro momento, fez-se uma concisa revisão da teoria da decisão na escola econômica e seus desdobramentos em finanças, no que tange à Hipótese dos Mercados Eficientes. Em um segundo momento, apresentamos um modelo de agente aplicado ao mercado acionário que foi programado em software livre NetLogo, cujo método é, em parte, baseado em modelos de agentes já programados para mercados financeiros artificiais e, ao mesmo tempo, parcialmente novo ao propor a realização de testes com parâmetros diferentes dos utilizados por outros autores – a saber: aversão à perda. Os resultados encontrados sugerem que a subjetividade humana presente na tomada de decisão, isto é, quando os agentes possuem aversão à perda, faz com que o movimento do mercado acionário artificial apresente alguns ruídos. Destarte, concluímos que os experimentos realizados nos oferecem indícios de que há certa fragilidade em alguns pressupostos da Hipótese dos Mercados Eficientes. / In this work, we intend to contribute to the debate in behavioral economics and finance to conduct a study on how Stock Markets behaves by including the loss averse agent's bias on this environment. At first, we built a concise review of the decision theory on economic school and its developments in finance, regarding to Efficient Market Hypothesis. Secondly, we presented an agent-based model applied to the stock market which has been programmed in the free software NetLogo, whose has, in part, agent-based models already programmed for artificial financial markets and at the same time, is partially new to propose conduction tests, which differ from other parameters used by several authors such as: loss aversion. The results suggest that human's subjectivity, inherently presented in decision-making, that is, when agents have loss aversion, it may cause the artificial stock market movement to present some noise. Thus, we conclude that the experiments give us evidence that there is some fragility on the Efficient Market Hypothesis. / CNPq: 130136/2015-8
555

Mercado de valores mobiliários: aplicação dos princípios contratuais às relações existentes entre as empresas de capital aberto e os investidores

Amaral, Andréa Costa do 12 November 2010 (has links)
Made available in DSpace on 2015-05-07T14:27:25Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 634500 bytes, checksum: 474eb66a93a2a951672440cc5f70a3e7 (MD5) Previous issue date: 2010-11-12 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / We can say that the real state and the stock markets have increasingly grown and taken unimaginable proportions in a globalization process and economic growth. In this context the investor needs to comprehend how businesses are done in this specific market, as well as if there is any or what are the protection norms for his future investment. In order to guarantee protection for the investor, Brazilian State created the Real State Stock Exchange Comission, which represents a regulatory agency for the sector which surveys an regulates everything concerned to the stock market and yet plays a sanctioning role when illicit conducts are perpetrated in these matters. There is a specific auto-regulatory system that concerns to this market with its own rules and following procedures. In the present work we studied the rules and requisites that are concerned to the companies that open their shares in the stock market exchange and the investors who seek for these shares. We assure that the relationship between the investor and the company that wishes to open its capital has a contract based nature. Thus, as a contractual relationship, we understand in this work that not only the real state stock market auto-regulation rules, but the rules and principles of the brazilian contractual and civil law should be also applied in these matters. This whole conception brings up the importance of the theme as the related judicial conflicts emerge and both set of rules can be used to solve them as well. Even if the contractual relationship between the investor and the companies has international patterns, either the real state auto-regulation rules or the brazilian civil law, rules and principles can be used to solve their conflicts in the judiciary level. Finally, this research stands for the investor who seeks to achieve the proper legal protection as his investment can now be seen as a real contract with all its terms, principles and characteristic rules. / Podemos dizer que os mercados de valores mobiliários e de capitais cresceram e tomaram proporções inimagináveis dentro do processo de globalização e crescimento econômico. Nesse contexto, necessário que o investidor entenda como se realizam as negociações nesse mercado específico, assim como se existem e quais são as formas de proteção de seu futuro investimento. O Estado, para garantir segurança ao Investidor, no Brasil, criou a Comissão de Valores Mobiliários, que funciona como agência reguladora, fiscalizando e regulando tudo o que ocorre no mercado de capitais, e ainda atua de forma sancionadora, aplicando punições, quando ocorrem ilícitos nesse mercado. Existe uma auto-regulação desse mercado específico, com regras e requisitos a serem seguidos. No presente trabalho, estudamos as regras e requisitos que dizem respeito às Empresas que abrem o capital e os investidores quando estão em busca de investimento. Afirmamos que a relação existente entre investidor e a empresa que abre o capital, é de um contrato. Dessa forma, por ser uma relação contratual, defendemos no presente trabalho que devem ser aplicadas as regras e princípios que regem o direito contratual civil brasileiro, e não apenas a auto-regulação do Mercado de Capitais. Isso porque, quando houver, na prática, conflitos a serem resolvidos, o Judiciário, além da legislação específica desse mercado, poderá se utilizar da principiologia e de regras norteadoras dos contratos no direito civil, mesmo que as relações entre investidor e empresa que abrem o capital sejam de caráter internacional. Esta pesquisa serve para amparar o investidor, que poderá ter a seu favor as regras e princípios norteadores das relações contratuais, já que seu investimento também é caracterizado como um contrato.
556

Análise comparativa de retornos e prêmios de risco entre os níveis de listagem das empresas no mercado de ações brasileiro

Barbosa, Rafael Freitas January 2012 (has links)
A presente investigação científica discorre acerca da análise comparativa dos segmentos Tradicional, Nível 1, Nível 2 e Novo Mercado da bolsa de valores brasileira. As bases do estudo estão calcadas nas relações entre retornos, risco e prêmios de risco em cada segmento. Para o alcance desse objetivo, foram organizadas carteiras teóricas, cada uma composta por ações de empresas listadas nos segmentos citados do mercado à vista. O intervalo de tempo delimitador dos dados amostrais compreende o período de janeiro de 2005 a dezembro de 2010 e possui características cíclicas - típicas desse ambiente de negócios - de crescimento, de queda brusca provocada pelos efeitos da crise de 2008 e de recuperação lenta na valorização dos preços das ações. Isso enriquece as conclusões ao se examinar comparativamente as referidas carteiras teóricas à luz de ciclos distintos do risco sistemático. As conclusões corroboram parcialmente os fundamentos da governança corporativa ao evidenciar que, de todos os portfolios compostos por empresas que adotam as boas práticas de governança, somente o Novo Mercado de fato gera redução das incertezas, acarretando a diminuição do risco e elevados retornos, absolutos e excessivos, relativamente ao portfolio composto por empresas listadas no Tradicional e à média do mercado, a qual é dada pelo Ibovespa. Os níveis 1 e 2, apesar das empresas que os compõem adotarem regras de governança corporativa, não obtêm resultados de acordo com as expectativas geradas justamente por desenvolverem processos de maior transparência e respeito aos acionistas. As evidências apontam que as razões do fato supramencionado residem no estágio inicial de desenvolvimento no qual se encontram o mercado de ações brasileiro e a economia nacional pós-Plano Real, além de haver número reduzido de empresas listadas principalmente nos níveis 1 e 2. Análises futuras poderão estar mais bem alicerçadas a partir da expansão do mercado, a qual ainda é tímida, embora sejam inquestionáveis seus resultados econômico-financeiros na melhoria do bem-estar social. / This scientific investigation centers on a comparative analysis of the Traditional, Level 1, Level 2 and Novo Mercado listing segments of the Brazilian stock exchange. The study is based on the relationships among the return, risk and risk premium of each segment. For this, theoretical portfolios were created, with each composed of the stocks of companies listed on these segments in the spot market. The time interval of the sample data consists of the period from January 2005 to December 2010 and features the cyclical characteristics (which are typical in this business environment) of growth, the sharp declines caused by the 2008 crisis and the slow recovery in stock prices, with the comparison of these portfolios in the context of the different cycles of systemic risk enriching the conclusions. The conclusions partially corroborate the fundamentals of corporate governance by demonstrating that of all the portfolios formed by companies that adopt good governance practices, only the Novo Mercado in fact generates a reduction in uncertainties, with lower risks and higher absolute and excessive returns in relation to the portfolio formed by companies listed in the Traditional segment and to the industry average, as indicated by the Ibovespa. Although their component companies adopt more stringent corporate governance rules, the Level 1 and 2 segments have not obtained results that are consistent with the expectations they have generated by their adoption of processes marked by greater transparency and respect for shareholders. The evidence suggests that the reasons for this are the initial stage of development of Brazil’s stock market and the country’s economy following the implementation of the Real Plan, as well as the low number of listed companies in the Level 1 and 2 segments. Future analyses could enjoy more solid support due to the market’s growth, which remains timid. However, the financial results unquestionably contribute to improving the well-being of society.
557

The cynicism and Corporate Governance / El Cinismo y el Gobierno Corporativo

Guarniz Izquierdo, Reynaldo Antonio 12 April 2018 (has links)
In this article, the author explains about the adoption of corporate governance practices, which depends on an evaluation of costs and benefits. Peruvian companies do not assume these practices because of the lack of incentives, informality and poor regulation. Finally, he concludes peruvian regulation of corporate governance practices lacks content, which means that it is not a priority for companies. / En este artículo, el autor explica acerca de la adopción de prácticas de gobierno corporativo, la cual depende de una evaluación de costos y beneficios. Las empresas peruanas no asumen dichas prácticas por causa de la falta de incentivos, informalidad y deficiente regulación. Finalmente, el autor concluye que el tratamiento peruano de las prácticas de gobierno corporativo carece de contenido, lo que genera que no sea una prioridad para las empresas.
558

BRIC: an integrated group financially? / BRIC: um grupo financeiramente integrado?

Regis Oquendo Nogueira 13 February 2012 (has links)
nÃo hà / This work analyzes the level of financial integration of an economic bloc entitled, on an ad hoc way, BRIC, composed by emerging economies with common and growth patterns, where more than 40% of the population live in one quarter of the worldâs territory. Following methodologically Vahid and Engle (1993), the results suggest that financial markets are determined by domestic economic fundamentals in periods of global economic stability, while in crisis periods, the cycles have greater importance in the composition of the returns of the indices analyzed, indicating a higher influence of financial risk. The individual cycles, as well as the individual trends are robustly correlated. These evidences are not trivial since Brazil is a market economy, with high level of inequality, poverty, democracy and urbanization, Russia is a an exsuperpower socialist, with high per capita income and human capital levels, India is a rural society with strong cultural and religious aspects, while China is a communist dictatorship with a high degree of trade openness and high levels of international reserves. The Indian financial market, which has been undergoing reforms since 1991, is such that the SENSEX-30 index plays important role in terms of predictability of others, as well as its tendency is the only individual to be significant in the exercise of causality Granger in the first common trend, the unique related to a promising scenario. / Este trabalho analisa o nÃvel de integraÃÃo financeira de um bloco econÃmico intitulado, de forma ad hoc, BRIC, composto por emergentes com padrÃes comuns e potenciais de crescimento, os quais dispÃem de um quarto do territÃrio mundial, onde residem mais de 40% da populaÃÃo. Seguindo metodologicamente Vahid e Engle (1993), os resultados sugerem que estes mercados financeiros sejam determinados por fundamentos econÃmicos domÃsticos em perÃodos de estabilidade econÃmica global, enquanto em perÃodos turbulentos, hà uma maior relevÃncia dos ciclos na composiÃÃo dos retornos dos Ãndices analisados, sinalizando uma maior influÃncia de fatores de risco financeiros. Em termos individuais, os ciclos, assim como as tendÃncias dos quatro emergentes sÃo robustamente correlacionados entre si. Estas evidÃncias nÃo sÃo triviais tratando-se se o Brasil de uma economia de mercado desigual, pobre, democrÃtica, fortemente urbanizada, a RÃssia de uma antiga superpotÃncia, exâadepta do socialismo que se destaca pela renda per capita e pelo capital humano, a Ãndia de uma sociedade rural, com forte traÃo cultural e religioso e a China de um comunismo ditatorial com elevado grau de abertura comercial e elevados nÃveis de reservas internacionais. O mercado financeiro indiano, o qual tem passado por reformas na desde 1991, à tal que, o Ãndice SENSEX-30 exerce relevante papel em termos de previsibilidade dos demais, assim como sua tendÃncia individual, a qual à a Ãnica a ser significativa no exercÃcio de causalidade de Granger na primeira tendÃncia comum, a Ãnica que està associada a um cenÃrio promissor.
559

Análise comparativa de retornos e prêmios de risco entre os níveis de listagem das empresas no mercado de ações brasileiro

Barbosa, Rafael Freitas January 2012 (has links)
A presente investigação científica discorre acerca da análise comparativa dos segmentos Tradicional, Nível 1, Nível 2 e Novo Mercado da bolsa de valores brasileira. As bases do estudo estão calcadas nas relações entre retornos, risco e prêmios de risco em cada segmento. Para o alcance desse objetivo, foram organizadas carteiras teóricas, cada uma composta por ações de empresas listadas nos segmentos citados do mercado à vista. O intervalo de tempo delimitador dos dados amostrais compreende o período de janeiro de 2005 a dezembro de 2010 e possui características cíclicas - típicas desse ambiente de negócios - de crescimento, de queda brusca provocada pelos efeitos da crise de 2008 e de recuperação lenta na valorização dos preços das ações. Isso enriquece as conclusões ao se examinar comparativamente as referidas carteiras teóricas à luz de ciclos distintos do risco sistemático. As conclusões corroboram parcialmente os fundamentos da governança corporativa ao evidenciar que, de todos os portfolios compostos por empresas que adotam as boas práticas de governança, somente o Novo Mercado de fato gera redução das incertezas, acarretando a diminuição do risco e elevados retornos, absolutos e excessivos, relativamente ao portfolio composto por empresas listadas no Tradicional e à média do mercado, a qual é dada pelo Ibovespa. Os níveis 1 e 2, apesar das empresas que os compõem adotarem regras de governança corporativa, não obtêm resultados de acordo com as expectativas geradas justamente por desenvolverem processos de maior transparência e respeito aos acionistas. As evidências apontam que as razões do fato supramencionado residem no estágio inicial de desenvolvimento no qual se encontram o mercado de ações brasileiro e a economia nacional pós-Plano Real, além de haver número reduzido de empresas listadas principalmente nos níveis 1 e 2. Análises futuras poderão estar mais bem alicerçadas a partir da expansão do mercado, a qual ainda é tímida, embora sejam inquestionáveis seus resultados econômico-financeiros na melhoria do bem-estar social. / This scientific investigation centers on a comparative analysis of the Traditional, Level 1, Level 2 and Novo Mercado listing segments of the Brazilian stock exchange. The study is based on the relationships among the return, risk and risk premium of each segment. For this, theoretical portfolios were created, with each composed of the stocks of companies listed on these segments in the spot market. The time interval of the sample data consists of the period from January 2005 to December 2010 and features the cyclical characteristics (which are typical in this business environment) of growth, the sharp declines caused by the 2008 crisis and the slow recovery in stock prices, with the comparison of these portfolios in the context of the different cycles of systemic risk enriching the conclusions. The conclusions partially corroborate the fundamentals of corporate governance by demonstrating that of all the portfolios formed by companies that adopt good governance practices, only the Novo Mercado in fact generates a reduction in uncertainties, with lower risks and higher absolute and excessive returns in relation to the portfolio formed by companies listed in the Traditional segment and to the industry average, as indicated by the Ibovespa. Although their component companies adopt more stringent corporate governance rules, the Level 1 and 2 segments have not obtained results that are consistent with the expectations they have generated by their adoption of processes marked by greater transparency and respect for shareholders. The evidence suggests that the reasons for this are the initial stage of development of Brazil’s stock market and the country’s economy following the implementation of the Real Plan, as well as the low number of listed companies in the Level 1 and 2 segments. Future analyses could enjoy more solid support due to the market’s growth, which remains timid. However, the financial results unquestionably contribute to improving the well-being of society.
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Simulação de cenários no mercado de ações com aplicação de lógica fuzzy como ferramenta de suporte à decisão de investimento / Simulation of scenarios in the stock market with the application of fuzzy logic as a tool to support investment decision-making

Marques, Michel Figueiredo 11 December 2017 (has links)
Submitted by Neusa Fagundes (neusa.fagundes@unioeste.br) on 2018-03-08T14:52:34Z No. of bitstreams: 2 Michel_Marques2017.pdf: 2867420 bytes, checksum: 53caf71d521e72787fb224c798d1dcde (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-03-08T14:52:34Z (GMT). No. of bitstreams: 2 Michel_Marques2017.pdf: 2867420 bytes, checksum: 53caf71d521e72787fb224c798d1dcde (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-12-11 / This dissertation aims to apply a scenario simulation model into the stock market, by using fuzzy logic in fundamentalist indicators to define the asset to be invested and technical analysis to determine the best timing to invest. The chosen model of scenario simulation foresees 5 steps, the first one being previously achieved by Rojo’s (2014) study and the others being applied throughout the fourth chapter or this research. Particularly, during the application of the second step of the model, presented over chapter 4.1, the fuzzy logic was applied as the competitive intelligence tool in order to support the analysis of 5 fundamental indicators. Therefore, as for the objective, this research is exploratory, with a quantitative and qualitative approach, and the research universe is compound of 10 shares that belong to the civil construction subsector and are part of the Small Cap index. Regarding to the temporal perspective, it was adopted the period between 18/11/09 and 27/08/17 to proceed with fundamental analysis and the period between 28/08/17 and 24/11/17 to apply technical analysis. During the application of fundamentalist analysis, the data were retrieved from Economática basis, meanwhile for the application of technical analysis the information was extracted from the Protrader web software that is provided by some brokers at no cost. At the end of the research, the general objective was achieved and it was presented a practical and scientifically grounded proposal that may be used by other investors, who may adapt several research points in order to attend their different profiles, as exemplified in the final considerations of this paper. One of the main limitations of this research arises from the fact that the present proposal could not be evaluated in terms of obtained results, mainly due to the time needed to perform such evaluation. / Essa dissertação visa aplicar um modelo de simulação de cenários no mercado de ações, utilizando lógica fuzzy em indicadores fundamentalistas para definir o(s) ativo(s) a ser(em) investido(s) e análise técnica para determinar o melhor momento de investir. O modelo utilizado para a simulação de cenários prevê 5 etapas, sendo que a primeira delas já fora realizada previamente no estudo de Rojo (2014) e as demais são aplicadas ao longo do quarto capítulo desse trabalho. Em particular durante a aplicação do segundo nível do modelo, discutido ao longo do capítulo 4.1, recorreu-se à lógica fuzzy como ferramenta de inteligência competitiva que visa auxiliar na análise dos 5 indicadores fundamentalistas. Dessa forma, essa pesquisa tem objetivo de ser exploratória, com abordagem qualitativa e quantitativa e o universo da pesquisa é composto de 10 ações pertencentes ao subsetor de construção civil e que fazem parte do índice Small Cap. Quanto à perspectiva temporal, foi considerado o período entre 18/11/09 e 27/08/17 para proceder com a análise fundamentalista e o período entre 28/08/17 e 24/11/17 para aplicação da análise técnica. Durante a aplicação da análise fundamentalista os dados foram extraídos da base Economática, enquanto que para aplicação da análise técnica foi utilizado as informações disponíveis no software Protrader Web que é fornecido gratuitamente por algumas corretoras. Ao final do trabalho, o objetivo geral foi alcançado e foi apresentado uma proposta prática e cientificamente fundamentada que pode ser reaplicada por outros investidores, sendo que esses podem adaptar diversos pontos da pesquisa de forma a atender seus diferentes perfis, conforme exemplificado nas considerações finais do trabalho. Uma das principais limitações da pesquisa decorre do fato que a presente proposta não pôde ser avaliada em função dos resultados obtidos, devido principalmente ao tempo necessário para fazer tal avaliação.

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