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本論文分為兩部分，第一部份是探討全球航空產業的油料避險會不會對公司價值有所影響，以及油料避險的誘因。第二部份則是檢視全球航空公司的風險曝露會不會影響分析師的預測誤差，尤其是燃油價格變動的風險曝露。 / In the first essay, we examine whether jet fuel hedging increases the market value of airline companies around the world. Using a sample of 70 airline companies from 32 countries over the period 1995 to 2005, we find that jet fuel hedging is not significantly positively related to their firm value in the global airlines, but this positive relationship holds in the various sub-samples and is significant for US and non-alliance firms. Moreover, our results show that the risk-taking behavior of executives and the tendency to avoid financial distress are important determinants for the jet fuel hedging activities of non-US airline companies. Alleviating the problem of underinvestment is also an important factor to explain the jet fuel hedging activities of US and non-alliance firms. Our results add support to the growing body of literature which finds that hedging increases firm value for global airline companies. In the second essay, we examine the extent analysts revise their earnings forecasts in response to oil price, interest rate and foreign exchange rate shocks they have observed during the year, and whether these revisions contain additional information about how current and past price shocks affect reported earnings, using the sample of the global airline industry. Empirical results indicate that jet fuel hedging can increase analysts’ forecast revisions in the total sample, and in the sub-sample of the volatile fuel price period. These results can also be seen in US and non-US airlines, and airlines with both strong and weak governance. Overall, our results show that oil price shocks play an important role in investor and analyst information uncertainty with regard to the global airline industry. Consequently, corporate risk disclosures only provide limited information about firms’ financial risk exposures. Two essays are comprised in this dussertation to examine whether jet fuel hedging has effects on firm value and analysts’ forecast accuracy in the global airline industry. Using global data allows us to cmpare the differences of jet fuel hedging behavior and incentives for hedging across different sub-samples. Furthermore, we also examine how jet fuel hedging affects analysts’ forecast erros across different sub-samples and its implications for firm disclosures about their risk exposures in the financial reports. In the first essay, we examine whether jet fuel hedging increases the market value of airline companies around the world. Using a sample of 70 airline companies from 32 countries over the period 1995 to 2005, we find that jet fuel hedging is not significantly positively related to their firm value in the global airlines, but this positive relationship holds in the various sub-samples and is significant for US and non-alliance firms. Moreover, our results show that the risk-taking behavior of executives and the tendency to avoid financial distress are important determinants for the jet fuel hedging activities of non-US airline companies. Alleviating the problem of underinvestment is also an important factor to explain the jet fuel hedging activities of US and non-alliance firms. Our results add support to the growing body of literature which finds that hedging increases firm value for global airline companies. In the second essay, we examine the extent analysts revise their earnings forecasts in response to oil price, interest rate and foreign exchange rate shocks they have observed during the year, and whether these revisions contain additional information about how current and past price shocks affect reported earnings, using the sample of the global airline industry. Empirical results indicate that jet fuel hedging can increase analysts’ forecast revisions in the total sample, and in the sub-sample of the volatile fuel price period. These results can also be seen in US and non-US airlines, and airlines with both strong and weak governance. Overall, our results show that oil price shocks play an important role in investor and analyst information uncertainty with regard to the global airline industry. Consequently, corporate risk disclosures only provide limited information about firms’ financial risk exposures.

L'objectif de cette thèse est d'analyser le rôle des agences de notation sur le marché financier. Notre contribution consiste à mieux comprendre l'influence des annonces de notation sur les acteurs du marché français des actions (investisseurs et analystes financiers).La première question porte sur l'apport informatif délivré par les agences de notation et l'impact de leurs décisions. Afin de répondre à cette question, nous avons conduit une étude d'évènement à l'annonce de notation en distinguant les annonces par nature, type et catégorie.Cette recherche permet de prouver que les annonces de notation ont globalement un impact sur le marché des actions. L'impact dépend de la nature de l'annonce, des informations fournies dans les rapports de notation, des changements de note entre catégories et de ceux effectués dans la catégorie spéculative. Enfin, le niveau de la note dépend des caractéristiques financières et comptables de l'entreprise notée.La seconde question porte sur le rôle bénéfique des agences de notation sur les marchés. Afin de répondre à cette deuxième question, nous avons conduit une recherche qui consiste à analyser l'évolution de l'asymétrie d'information entre les investisseurs et de la liquidité autour des annonces de notation.Cette recherche prouve que les annonces positives (respectivement négatives) entraînent une diminution (respectivement augmentation) de l'asymétrie d'information sur le marché des actions. Les résultats prouvent également que les annonces positives et neutres, à l'inverse des annonces négatives, entraînent une réduction des fourchettes de prix et une amélioration des volumes de transactions. Ces deux effets concomitants traduisent une amélioration (respectivement détérioration) de la liquidité du marché lors des annonces positives et neutres (respectivement négatives).La troisième question porte sur l'utilité des annonces de notation pour les analystes lors de leurs prévisions. Afin de répondre à cette question, nous avons mené une recherche qui consiste à étudier l'évolution de la dispersion et de l'erreur des prévisions des analystes autour des annonces de notation.Les résultats mettent en évidence une relation inverse entre les caractéristiques des prévisions des analystes financiers et la nature de l'annonce de notation. Les annonces positives et neutres réduisent l'erreur et la dispersion des prévisions d'analystes.Ce travail de recherche permet d'attester de la réelle importance du contenu informationnel des annonces de notation pour le marché des actions et de la réelle contribution des annonces à l'amélioration de la communication financière sur le marché. / The main objective of this thesis is to analyze the role of rating agencies on the financial market. Our contribution consists in a better understanding of the impact of rating announcements on the agents on the French financial market (both investors and analysts).First we focus on the information content of announcements by rating agencies and the impact of theirs decisions in the market. To answer this question, we made an event study at the rating announcements, by identifying them by nature, type and category.This research highlights the fact that the rating announcements generally have an impact on the stock market. This impact depends on the nature of the announcement, the information provided in the reports as well as score changes between categories and within the speculative category. Moreover, the rating level depends on the firm financial and accounting characteristics.Second, we intend to understand the beneficial role of rating agencies on the financial markets. To answer this question, we analyzed the evolution of the information asymmetry and stock market liquidity around rating announcements.Our results show that positive announcements (respectively negative) lead to a decrease (respectively increase) of information asymmetry. We also found that positive and neutral announcements, unlike the negative ones, lead to a reduction of bid-ask spread and to an increase of transactions volumes. Both effects reflect higher (respectively lower) stock market liquidity when the announcements are positive or neutral (respectively negative).Finally, we focus on the study of the impact of rating announcements on analysts' forecasts. For this purpose, we studied the evolution of the analysts' forecasts dispersion and errors around rating announcements.Our results indicate an inverse relationship between the characteristics of financial analysts' forecasts and the nature of the rating announcement. Indeed, positive and neutral announcements reduce the error and the dispersion of analysts' forecasts.This research shows the informative content of rating announcements on the stock market and the real contribution of the announcements by improving financial communication.

Investeringsmötet mellan analytiker och fondförvaltare har tidigare fått alldeles för lite ögon på sig. Att analytiker medverkar på investeringsmöten med fondförvaltare kan ses som paradoxalt eftersom det finns mängder av information att erhålla från andra håll. Denna information kan med en första anblick ses som mer lättillgänglig, detaljerad och omfattande. Således syftar denna studie på att skapa förståelse för varför analytiker väljer att medverka i investeringsmöten med fondförvaltare och hur deras medverkan kan påverka investeringsunderlaget. Det empiriska underlaget bestod av kvalitativa intervjuer med sju analytiker från finansiella institutioner samt en deltagande observation av ett investeringsmöte. Utifrån studien kan tre slutsatser dras i form av anledningar till varför en analytiker väljer att medverka och dess betydelse för investeringsunderlaget. Den första slutsatsen är att träffas face-to-face innebär att analytikerna erhåller mer information jämfört med andra informationskällor.Den andra slutsatsen är att analytikerna erhåller mer beslutsavgörande information som de inte kan erhålla till lika stor grad från andra håll. Den sista slutsatsen är att analytikerna kan säkerställa tidigare erhållen information och även sammanväva information från flera olika källor när de skapar sitt investeringsunderlag. / The investment meeting between analysts and fund managers has previouslyreceived too little attention. That analysts participate in investment meetings with fund managers can be seen as paradoxical as there are lots of information to be obtained elsewhere. At first this information can be seen as more accessible, detailed and comprehensive. Thus, this study aims to create an understanding of why analysts choose to participate in investment meetings with fund managers and how their participation can affect their investment base. The empirical data consists of qualitative interviews with seven analysts from financial institutions and a participatory observation of an investment meeting. Based on this study, three conclusions can be drawn in the form of reasons why analysts chooseto participate and its consequencefor the investment base. The first conclusion is that meeting face-to-face means that the analystsreceive more information compared to other information sources. The second conclusion is that analysts receive more decision-making information that they cannot obtain to the same extent from other sources. The last conclusion is that analysts can ensure that previously obtained information is correct and also interweave information from several different sources when they create their investment base.

Made available in DSpace on 2016-03-15T19:25:55Z (GMT). No. of bitstreams: 1 Jose Reinaldo Pessanha.pdf: 378565 bytes, checksum: 7e6b92dfc326074e05575bbeba5b10bd (MD5) Previous issue date: 2012-02-10 / Analysts are essential to the functioning of capital markets as they make predictions and recommendations that support the investment decisions of both institutions and individual investors. Analysts study the fundamentals of public companies, their growth prospects, financial structure and cash flow, corporate governance, industry structure and the macroeconomic environment in which companies are inserted. In this context, business leaders play a major role, as they influence the directions of the corporation and their performance. The goal of this paper is to investigate the influence of the concentration of power in the hands of the major corporate leader on the accuracy of analyst earnings forecasts of Brazilian companies. The accuracy is measured in accordance with the international literature. The proxy for the concentration of power was constructed by Silveira and Barros (2011b) and takes into consideration the individual power of the main corporate leader the Chairman of the Board of Directors (Chairman) or the CEO (Chief Executive Officer) and also the degree of passivity and homogeneity of the Board of Directors. The sample contains 107 public companies listed in BM&FBOVESPA (Bolsa de Valores de São Paulo) in 2010. It only includes companies that had analyst coverage in the twelve months preceding the end of the fiscal year. The forecasts and financial information were collected from Thomson One Analytics® and Economática®. Information on the concentration of power was provided by Silveira and Barros (2011b), who collected the data in the websites of companies and in Comissão de Valores Mobiliários (CVM). The analysis shows evidence that the concentration of power positively influences the accuracy of analyst forecasts. This idea is in line with a few prior studies on the concentration of power and volatility of results that argue that powerful business leaders tend to be more conservative. / Os analistas de mercado são importantes para o funcionamento do mercado de capitais à medida que fazem previsões e recomendações que fundamentam as decisões de investimentos de instituições e investidores individuais. Para isso, os analistas estudam os fundamentos de companhias abertas, sua capacidade de crescimento de receita, estrutura financeira e geração de caixa, governança corporativa, setor de atuação e a conjuntura macroeconômica na qual as empresas estão inseridas. Nesse contexto, os líderes corporativos exercem papel preponderante, pois determinam os rumos das corporações e exercem impacto importante sobre seus resultados. O objetivo geral deste trabalho é investigar a influência da concentração de poder nas empresas de capital aberto brasileiro sobre acurácia das previsões dos analistas de mercado. A acurácia é mensurada através de metodologias utilizadas na literatura internacional. Como proxy para a concentração de poder é utilizada a medida construída por Silveira e Barros (2011b) que considera o poder individual do principal líder corporativo Presidente do Conselho de Administração (Chairman) ou Diretor Presidente (Chief Executive Officer CEO), a passividade e a homogeneidade do Conselho. A amostra é composta por 107 companhias de capital aberto listadas na BM&FBOVESPA (Bolsa de Valores de São Paulo) no ano fiscal de 2010. A amostra do trabalho consiste em um conjunto de dados em corte transversal. Foram consideradas na amostra somente as empresas que apresentavam cobertura dos analistas nos doze meses anteriores ao final do ano fiscal. As previsões e informações financeiras foram coletadas junto à Thomson One Analytics® e Banco de Dados do Sistema Economática®. As informações sobre concentração de poder referem-se à base de dados de Silveira e Barros (2011b) coletadas a partir de websites das companhias e da Comissão de Valores Mobiliários (CVM). De acordo com os resultados encontrados há evidências de que a concentração de poder influencia positivamente a acurácia das previsões dos analistas. Essa ideia está alinhada com alguns estudos sobre concentração de poder e volatilidade dos resultados que argumentam que líderes corporativos poderosos podem assumir uma posição conservadora.

Made available in DSpace on 2016-03-15T19:25:27Z (GMT). No. of bitstreams: 1 Salim Augusto Amed Ali.pdf: 1908550 bytes, checksum: 7095064d1ba3cd28c835632bfe5ac730 (MD5) Previous issue date: 2010-08-16 / Fundo Mackenzie de Pesquisa / This study aimed to gather the perceptions of three audiences in specific, about their understanding on the generation of value through the activity of Investor Relations in Brazilian listed companies. The first group, consisting of 16 professionals and experts in Investor Relations and the second group, comprised of 11 investment analysts and portfolio managers, were personally interviewed using structured interview, survey-type. The third group of individual investors answered a questionnaire via Internet, totaling 457 valid responses. The findings show that in the perceptions of the three groups, IR adds value to the company. They also pointed out several activities and structures presents in Investor Relations that are considered more relevant in the sense of adding value to the company. Reflecting these activities and structures, it was possible to divide them into five groups: Communication, Activities, Meetings with the Market, Strategy and Metrics of Direct Measurement. The Communication was of higher importance, noting that IR and the company must be transparent, providing the information in a quick, clear, reasoned way, and the IR website and electronic media were identified as the main means. Activities undertaken by IR, shows relevance the contact with foreign investors; the explanation of profit distribution policy; relevant future events, as new investments; the diversification of the shareholder bases; comparative analysis of the sector in which the company operates; and actions to promote the liquidity of shares. Regarding Meetings With the Market, public meetings, individual (with sell side, buy side and institutional) and road shows, were revealed as relevant. About the Strategy in IR, it became clear that it must be drawn on the Executive Board, and the area should be subordinated to the CEO. Finally, Metrics of Direct Measurement point to three main items, namely the amount of "houses" covering the company's stock, the average market valuation compared to the valuation prepared by the company itself, and decrease in volatility of stock price compared with peer companies in the industry. The article seeks to contribute to, in future searches, build more objective and justified proxies for the quality of IR, in an attempt to quantify the value that the IR area adds to the public companies. / A presente dissertação objetivou coletar a percepção de três públicos em específico acerca do entendimento dos mesmos quanto à geração de valor por meio da atividade de Relações com Investidores em companhias abertas brasileiras. O primeiro grupo, formado por 16 profissionais e especialistas em Relações com Investidores, e o segundo grupo, formado por 11 analistas de investimento e gestores de carteiras, foram entrevistados pessoalmente por intermédio de entrevistas estruturadas do tipo survey. O terceiro grupo, dos investidores individuais, respondeu a questionário via internet, totalizando 457 respostas válidas. Os achados mostram que na percepção dos três grupos, RI agrega valor à companhia. Os mesmos ainda apontaram diversas atividades e estruturas presentes em Relações com Investidores que se demonstram mais relevantes no sentido de agregar valor à companhia, bem como aquelas que se demonstram menos relevantes. Espelhando essas atividades ou estruturas, foi possível dividi-las em cinco grupos: Comunicação, Atividades, Reuniões com o Mercado, Estratégia e Métricas Diretas de Mensuração. A Comunicação foi a de maior relevância, apontando que RI e a companhia devam ser transparentes, apresentando as informações de modo rápido, claro e fundamentado, sendo o website de RI e as mídias eletrônicas apontadas como os principais meios. Nas Atividades realizadas por RI tomam relevância o contato e atendimento aos investidores estrangeiros; a política de distribuição de resultados; eventos futuros relevantes, como novos investimentos; a diversificação da base acionária; as análises comparativas do setor em que a companhia atua e; as atividades que favoreçam a liquidez das ações da empresa. Nas Reuniões com o Mercado, as reuniões públicas, individuais (com sell side, buy side e institucionais) e road shows, se evidenciaram como relevantes. Quanto à Estratégia em RI, evidenciou-se que a mesma deve ser traçada na Diretoria Executiva, e a área subordinada ao Presidente Executivo. Por fim, as Métricas Diretas de Mensuração apontam três itens como principais, quais sejam a quantidade de casas cobrindo a ação da empresa, o valuation médio de mercado comparado ao valuation elaborado pela própria companhia e a diminuição na volatilidade no preço da ação comparado com as companhias pares do setor. O estudo busca contribuir para que em futuras pesquisas seja possível a construção de proxies objetivas e mais justificadas para a qualidade do RI, na tentativa de quantificar o valor que a atividade de Relações com Investidores agrega à companhia aberta.

<p>Datalager används för att ge företag en samlad bild av sin verksamhet, en bild som byggs upp av analytikers statistiska beräkningar och modeller. Analytiker arbetar i datalager med hjälp av olika analysverktyg, och begränsas av dessa verktygs möjligheter att ge en förståelse av datalagrets uppbyggnad och funktion, och av möjligheterna att hitta rätt analysdata. Arbetet med att hitta och analysera data är en iterativ problemlösningsprocess för att få fram det önskade resultatet.</p><p>Visualiseringar kan fungera som ett verktyg i arbetet och stödja användares beslutsfattande. Denna kvalitativa fallstudie syftar till att undersöka hur visualisering kan användas som ett stöd för marknads- och kreditanalytikers datalagerarbete. Studien använde användarcentrerade metoder för att undersöka analytikers arbete i ett datalager. Femton kunskapsuppgifter identifierades som mål för visualiseringsstöd i analytikers datalagerarbete. Ett analysorienterat och ett systemorienterat strukturförslag för visualiseringar värderades med dessa kunskapsuppgifter som viktade mål.</p><p>Av kunskapsuppgifterna är den viktigaste att koppla analysuppgifter till systemstruktur. Det kräver att visualiseringsstödet erbjuder en analysorienterad struktur initialt och blir alltmer systemorienterat i takt med att den intressanta informationsmängden definieras. Användarcentrerade metoder användes för att identifiera kunskapsuppgifter. Studien visar att dessa kunskapsuppgifter kan användas som designmål för värdering av visualiseringsstöd.</p>

區域技術創新能力是展現區域將知識轉化為經濟的能力，是區域競爭力的重要內容。由於區域創新能力是造成中國各區域經濟發展差距的主要原因之一。本研究採用中國之上市公司為研究對象，探討公司創新活動的揭露與中國各省（自治區、直轄市）創新能力對分析師預測行為及分析師預測跟隨人數之影響。由三個面向檢視區域創新能力：研究與試驗發展全時人員當量增長率(REGTH)、政府研發投入占GDP比例(GIGDP)、每百萬人平均發明專利授權數(AVPAT)。研究結果發現創新活動揭露越多之公司，分析師之預測誤差程度越低、分析師之離散度越高且能吸引越多分析師對公司做預測。區域創新能力指標REGTH越高地區，分析師預測跟隨人數越少；區域創新能力指標GIGDP越高地區，分析師之預測誤差程度越低、分析師之離散度越低、分析師預測跟隨人數越少；區域創新能力指標AVPAT越高地區，分析師之預測誤差程度越低、分析師之離散度越低、分析師預測跟隨人數越多。 / Regional innovation capability is an important competitive ability to improve the economic development in China. Using a sample of Chinese listed companies, this study investigates the extent to which innovation disclosure at the company level and regional innovation capabilities affect analysts’ forecast characteristics in terms of forecast error, and forecast dispersion, and the number of analysts’ following. The indicators of regional innovation capabilities are the growth rate of R&D full-time equivalent personnel (REGTH), regional government's investment in R&D per GDP (GIGDP), and average of innovation patent authorized per millions of people in one region (AVPAT). The results indicate that firms with more innovation disclosures improve analysts’ forecast error, and regions with higher GIGDP and AVPAT also improve analysts’ forecast error. For firms with more innovation disclosures increase analysts’ forecast dispersion, and for regions with lower GIGDP and AVPAT increase analysts’ forecast dispersion. I also find firms with more innovation disclosures attract more analysts’ following, and regions with higher REGTH and GIGDP have less analysts’ following, while regions with higher AVPAT attract more analysts’ following.

本文以三篇論文討論三個與財務報表向下重編盈餘公司有關的議題：（1）宣告財務報表重編後的長期股票績效；（2）重編公司內部人交易行為；（3）重編公司如何操弄盈餘以及操弄動機為何？ 本文樣本是從1984年1月至2000年12月，557家因為財務報表違法、舞弊或錯誤而宣告需要重編以前財務報表的公司。 第一篇論文討論公司宣告重編後三年長期股票績效。在不同配對組合下，實證結果顯示，三年長期持有異常報酬（buy-and-hold abnormal return）達-34％。文中也討論公司宣告重編時以及後續分析師預測行為。結果發現，分析師對於重編資訊有反應不足的現象，而且三年的盈餘預測修正與長期異常報酬有顯著正相關。 第二篇論文探討盈餘品質與內部人交易行為。本文假設內部人擁有重編公司盈餘品質不良的私有資訊，內部人會利用此私有資訊從事異常交易。實證結果顯示，內部人早在重編前兩年就已經開始異常出售持股，但是為了避免被發現，愈接近重編期間則交易量愈少，而且內部人異常交易與重編金額成正相關。 第三篇論文採取應計項目分項的方法（disaggregate approach）探討重編項目與特定應計項目的關連性以及重編公司違反一般公認會計原則的動機。實證結果顯示，特定重編項目公司的總應計項目比特定應計項目更顯著。很可能是管理當局為了避免操弄特定項目以致於被發現，所以操弄各種應計項目以達到總金額的目標。尤其在不同盈餘管理動機的成本效益的考量下，如果操弄主要應計項目的效益大於成本，管理當局還是會操弄特定應計項目以達到操弄的目的。因此，應計項目分項的方法可以作為進一步探討盈餘管理的方法。 / This dissertation examines three different aspects of downward earnings restatements in three essays: (1) the long-run stock performance of restatement firms following the announcements of restatements; (2) insider trading activities of earnings restatement firms; and (3) how earnings manipulations of restatement firms are effected and what are the incentives for earnings manipulations? Using extensive keyword (i.e., “restatements,” “restate,” “restated,” “restates,” and “restating”) searches over the period from January 1, 1984 through December 31, 2000, 557 firms are identified as having restated their previously published or filed financial statements due to accounting irregularities, fraud, or errors. The first essay examines the post earnings restatement announcement of long-term stock performance. Using various benchmark portfolio formulation strategies, I document an average buy-and-hold abnormal return of -34% over the 36-month horizon. I then investigate analysts’ forecast behavior around and after the restatement announcements. I find that market underreactions are associated with a sluggish forecast revisions by financial analysts. This study sheds light on how restatement information is transmitted to the capital markets and provides evidence that the market under reacts to externally initiated corporate events. The second essay examines the relationship between earnings quality and insider trading. Using downward earnings restatement firms to identify low-quality earnings, I find that insiders outsell non-earnings restatement firms of their holdings over the period from two years before to one year before the beginning of the restatement period. In addition, the amounts of restatement are positively associated with the excess insider selling. I also provide evidence that excess insider selling predicts excessive earnings manipulations that eventually lead to GAAP violation. In the third essay, I take advantage of the disclosed manipulation of items and approach the earnings manipulation issue by a disaggregate approach. Given that management considers cost/benefits of specific accruals to be manipulated, I examine whether management chooses different items to manipulate under different goals. Overall, the empirical results support the equity offering hypothesis and weakly support the meeting earnings threshold hypothesis. However, the results fail to support the avoidance of debt covenant violation hypothesis, indicating that manipulation under certain monitoring conditions can be conducted in a very subtle manner.

傳統探討分析師推薦資訊價值的研究多採用累積超額報酬的方式，近年來研究顯示個別投資人的績效顯著低於機構投資人，因此是否分析師推薦能夠幫助提升個別投資人的福利。本論文的第一個貢獻在檢定是否個別投資人能夠獲取分析師推薦的資訊價值，為區分推薦資訊分別對於個別與機構投資人的價值為何，本研究採用的每種投資人實際的交易利潤作為衡量指標。 研究結果顯示所有投資人都可以透過買入推薦獲取顯著的正報酬，但在賣出推薦上，僅外資與共同基金仍能維持獲取正的報酬。同時發現在推 薦事件期間，專業機構投資人的利潤顯著高於一般散戶的獲利。 進一步，本論文的第二的主題在探討此推薦的資訊價值對於不同投資人的差異，是否肇因於推薦券商所提供的私有資訊，因此進一步將各類投資人分成推薦券商的客戶與非客戶。結果顯示國內機構投資人的利潤在客戶的身上顯著高於非客戶的獲利，顯示推薦券商在對外公佈推薦資訊前的確提供私有資訊給其國內機構客戶，但此現象在賣出推薦並不存在。 第三，本論文進一步分析是否拿到推薦券商所提供私有資訊的客戶也是推薦券商的經紀業務收益的主要貢獻者。在比較推薦券商與非推薦券商在被推薦股票上的相對交易量(金額)中，發現推薦券商的確因為買入推薦股票而增加經紀業務量，但很驚訝的發現貢獻最多交易量的是個別投資人，而非拿到最多好處的機構投資人。 最後，本研究透過迴歸分析探討不同投資人的交易利潤與推薦券商所獲得的經紀業務量的關係。在控制推薦類型、推薦評等與被推薦股票之股票特性後，發現投資人的交易利潤與推薦券商的經紀業務收益成正相關，再次顯示券商推薦與其各項業務收益間的關係。 / Traditionally, information value of analysts’ recommendations has been well-recognized by cumulative abnormal returns. Recent studies show that individuals are underperformed, and therefore, it is a critical issue on if analysts’ recommendations are helpful to individuals’ welfares. The first contribution of this dissertation to the literature is to examine whether individual investors are capable of capturing the information value. To classify the information value of recommendations for individuals and institutions, respectively, I, thus, use a direct measure to calculate the actual trading profits of types of traders. To our best knowledge, this is the first paper that demonstrates the information value for types of investors. Our results indicate that, all investors get positive and significant profits in brokerages’ buy recommendations, no matter what types of investors are measured. As to sell recommendations, only foreign investors and mutual funds have positive returns. We also find that professional institutions earn more profits than retail investors during the recommendation event periods. Further, the second objective of this dissertation is to test whether the information values are caused by private information from brokerages’ houses, we separate the profits of types of investors into customers and non-customers based. The findings are that only domestic institutional customers of recommending brokerages are more beneficial than those of non-recommending brokerages in buy recommendations, which implies that brokerage houses may reveal private information to their own institutional customers before buy recommendations make public. This does not hold for sell recommendations. Third, we are interested in analyzing whether the private information that recommending brokerages provide to their own customers may, indeed, contribute to brokerages’ commission revenues. By comparing the trading volume of recommending brokerages and non-recommending brokerage for the covered stocks, we find that the volumes of covered stocks issued in the recommending brokerages are increased for buy recommendations. Particularly, we find that the main contribution of trading volume is from individuals. Furthermore, we run regressions to study the relationship between trading profits of types of investors and trading volume of recommending brokerages. After controlling recommendation types, consensus rating of recommendations, and stock characteristics, our results indicate that trading profits of all types of investors are positively related to commission revenues of brokerages. This may justify the importance of brokerage recommendations on their business relationships.