Abstract This thesis is composed of three models that imply the impact of managers¡¦ characteristics on investment under asymmetric information. The first one regards insider as managers and formulates a model to explain the positive relationship between cash flow and capital expenditure of a firm, and tries to synthesize the ¡§asymmetric information hypothesis¡¨(Myers and Majluf, 1984) and the ¡§free cash flow hypothesis¡¨(Jensen, 1986) by insider ownership. The finding demonstrates that in instances with low percentage of insider ownership, the free cash flow hypothesis will better explain the positive relationship between cash flow and capital expenditure and will have the phenomenon of over-investment. On the other hand, when the percentage of insider ownership is high, the asymmetric information hypothesis is better suited to explain this relationship and will have the phenomenon of the under-investment. The second one formulates a model to synthesize the ¡§reputation effect¡¨ and ¡§asymmetric information hypothesis¡¨ through considering the outsider investors¡¦ evaluation of the firms in terms of firms¡¦ reputation and firms¡¦ private information. This study concludes that the good type firms with low reputation will show the behavior of under-investment and the bad type firms with high reputation will have the phenomenon of over-investment. Moreover, the model demonstrates that both the phenomena of under-investment and of over-investment are caused by the conflict between the firms and the outsider investors. At last, this study implies that the effect of reputation has an influence on the choice of financial tools for the good type firms but does not have an influence on that of the bad ones. This study presents a general model to explain two types of investment inefficiency under the effect of reputation in a reasonable mode. The last one formulates a model to synthesize the ¡§bias effect¡¨ and ¡§reputation effect¡¨ through considering the fact that the CEO in the interest of firm is in favor of a certain project and that junior managers concern their reputation. This study concludes that the CEO¡¦s bias will influence the project that the managers suggest and does not necessarily lead to the direction of bias. The untalented managers will be affected more seriously than talented managers. Moreover, the model combines ¡§bias effect¡¨ with ¡§asymmetric information hypothesis¡¨ and implies that the bias can alleviate the problem of under-investment under certain circumstances. This finding shows that the bias is not always a negative factor of investment efficiency.

Sammanfattning Magisteruppsats för Civilekonomexamen i företagsekonomi, Ekonomihögskolan vid Linnéuniversitetet, Växjö, 2016.   Författare Alexander Palm & Adam Sjögren   Handledare Christopher Von Koch & Katarina Eriksson   Examinator: Sven-Olof Yrjö Collin   Titel: ”Aktierekommendationer i en ny tid – podcasts på den finansiella marknaden”   Bakgrund & problem: Aktierekommendationer ges traditionellt ut av diverse banker och analyshus. En bias har observerats vilket är till nackdel för investerare. Podcasts är ett förhållandevis nytt fenomen som kan erbjuda aktierekommendationer. Eftersom denna form av media är ny, finns lite forskning kring dess roll och potential för att erbjuda finansiella råd.   Syfte: Uppsatsens syfte är att utvidga forskning kring podcasts och dess roll för marknadsfunktionen och marknadseffektiviteten   Metod: En deduktiv utgångspunkt och ett kvantitativt förhållningssätt mellan teori och forskning tillämpas. En traditionell eventstudie med två olika tidsspann tillämpas för att studera aktierekommendationers påverkan på aktiekurser.   Slutsats: Resultat pekar på att IH inte har stöd vid aktierekommendationer från podcasts vilket är ett tecken på stöd för EMH. Däremot har PPH stöd vilket i sin tur pekar på brister i EMH. Således är det ett tecken på att den svenska aktiemarknaden inte är fullt effektiv och den besitter inte semi-stark form. Inget informationsläckage kunde observeras i samband med rekommendationerna, något som skiljer sig från traditionella källor. Vi kunde visa på en viss temporär och positiv effekt gällande marknadsfunktionen för Small Cap. Genom en observerad ökad handelsvolym påvisar vi övertro på den svenska aktiemarknaden, något som gäller även för traditionella aktierekommendationer. Vi kan inte statistiskt säkerställa att kunskaps sprids mellan podcastlyssnare vilket skiljer sig mot teorier och tidigare forskning. / Abstract Master Thesis in Business Administration. School of Business and Economics at Linnaeus University, Växjö, 2016.   Authors Alexander Palm & Adam Sjögren   Supervisor: Christopher Von Koch & Katarina Eriksson   Examiner: Sven-Olof Yrjö Collin   Title: “Stock recommendations in a new era – Podcasts in financial markets.”   Background & problem: Banks and other financial institutes deliver traditionally stock recommendations. Bias from these sources has been observed which can be of disadvantage for individual investors. Podcasts is a relatively new kind of media that can supply the market with stock recommendations. Since podcasts is a new media, there is little research regarding its role on financial markets and its potential to offer financial advice.   Purpose: The purpose is to extend previous research regarding podcasts and it’s role on market efficiency and market function.   Method: We apply a deductive benchmark and a quantitative approach. A traditional event study with two different time-spans is conducted to analyse stock recommendation and the effect on stock prices.   Conclusion: Results indicate lack of support for IH with stock recommendations from podcasts, which in turn is support for EMH. However, PPH does have support, which indicate deficiency in EMH. Thus, we provide evidence that the Swedish stock market is not fully efficient and doesn’t posses semi-strong form. No information leakage could be observed, something that differs from previous research on stock recommendations. We could provide evidence of a temporary and positive effect regarding the market function for Small Cap. The observed increase in trading volume proves overconfidence on the Swedish stock market, something that has previously been shown. No knowledge dispersion exists between listeners of podcasts, something that differs from theory and previous research.

This study examines the determinants of private placement discounts and announcement effects on the Stockholm Stock Exchange between 2014 and 2022. The results show that private placement announcement effects are significantly positive, reinforcing the empirical support for the monitoring hypothesis and information hypotheses. Positive announcement effects reflect signals of certification from private equity investors that the firm is undervalued. Regression analysis suggests that information costs and some firm characteristics are important determinants for discounts on private placements. Private equity investors will demand larger discounts when information asymmetry is high, and cash flow restraints are more severe. Foreign investors require significantly smaller discounts on private placements, possibly implying that they commonly assume a passive rather than active role as shareholders. Firms’ stated motivations for private placements and the agreed discounts are significantly related to stock market reactions. Specifically, motivations relating to an investment in a new project or an acquisition are associated with significantly more positive announcement effects.

國內博達科技無預警聲請重整，對會計師業及資本市場均造成嚴重之衝擊，有些投資人甚至質疑財務報表審計存在的必要性及其價值。財務報表審計有無價值主宰會計師業是否有存在之必要，其影響不容小覷。本研究乃依據Wallace(1980，1987)提出之代理、資訊及保險等三假說，藉會計師審計失敗之事件，觀察其他簽證客戶股價之反應，以衡量財務報表審計是否有價值。 本研究以企業及審計均失敗的公司為實驗組，企業及審計均未失敗的公司作為控制組，期衡量財務報表審計是否有價值。依據研究個案篩選標準，本研究針對87至92年間，各選取五家公司作為實驗及控制組之研究個案。 實證結果顯示，在五個研究個案中，中友的簽證會計師事務其他簽證客戶之股價在事件期間，有顯著為負的異常報酬，亦即，中友之簽證會計師提供之財務報表審計確有價值；然國揚、和旺、桂宏及茂矽等四家公司的簽證會計師事務所審計失敗時，因市場出現其他影響股價變動之事件，故無法衡量此四家公司之審計是否有價值。 若僅自中友之案例，類推所有事務所之財務報表審計均有價值，恐不足以採信，故本研究推論，會計師事務所提供的財務報表審計服務可能有價值，惟其是否確有價值，則無法自實證結果提出佐證。 / PROCOMP INFORMATICS LTD affects accountant industry and the capital market seriously. Some investors even question both the necessity of existence and the value of financial statement audit. Whether financial statement audit has value decides the necessity of accountant industry’s existence and its influence is significant . This research is based on agency, information and insurance hypothesis proposed by Wallace (1980, 1987). In this paper, we choose the event of audit failure and observe the stock price of CPA firm other audit clients to measure the value of financial statement audit. This research designs both the experimental group and the control group to measure the value of financial statement audit. We choose companies which occurred business failure and audit failure as the experimental group. In stead, we choose companies which didn’t occur business failure and audit failure as the control group. Based on the research screening standard, we are aimed at five companies respectively taken for the experimental and the control group. Results show that the stock price of other audit clients of Chungyo’s CPA firm will have significant negative abcdrmal return when CPA firm occurs audit failure. Namely, financial statement audit provided by Chungyo’s CPA firm has value. However, when the other company’s CPA firm occur audit failure, some other event that affect stock price to vibrate happen simultaneously, we can’t measure the value of financial statement audit provided by the four company’s CPA firms. On the whole, if we use the finding to analogize that financial statement audit provided by all CPA firms has value , it maybe not to be persuasive. Consequently, this research infers that the financial statement audit services provided by CPA firms may has value. Whereas, we can’t conclude that financial statement audit has value truly.

Η παρούσα διπλωματική εργασία ερευνά την σχέση μεταξύ των συναλλαγών των μετοχικών αμοιβαίων κεφαλαίων και των χρηματιστηριακών αποδόσεων για την περίπτωση του Ελληνικού Χρηματιστηρίου για την χρονική περίοδο 1994-2002. Με την χρησιμοποίηση ποικίλων οικονομετρικών μεθόδων γίνεται έλεγχος για την ύπαρξη σχέσης συνολοκλήρωσης καθώς και κάποιας βραχυχρόνιας σχέσης μεταξύ αυτών των δύο παραγόντων, ενώ γίνεται προσπάθεια εντοπισμού κάποιας σχέσης αιτιότητας μεταξύ αυτών με βάση τον έλεγχο αιτιότητας του Granger. / This diplomatic thesis investigates the relationship between the trading of mutual funds and stock returns in the case of the Greek Stock Exchange Market, for the period 1994 - 2002. A variety of econometric methods was used to check the existence of a cointegration relationship and a kind of a short-run relationship between these two factors. Finally an attempt was made to identify causal relationships between them using the Granger causality test.

La rationalité parfaite des investisseurs, base de l'hypothèse d'efficience desmarchés, est de plus en plus discutée. Ceci a conduit au développement de la financecomportementale. Le sentiment de marché, qui en est issu, est l'objet de cette étude.Après l'avoir mis en relation avec la rationalité et défini, ses modes de mesure courantset une évaluation de leur capacité à anticiper les rentabilités sont présentés. Ensuite, autravers de deux recherches largement indépendantes, nous (1) montrons de manièreempirique, essentiellement à partir de modèles multi-Agents et d'une modélisation del'impact des chocs d'information sur la distribution des rentabilités, que les skewness etkurtosis de la distribution des rentabilités peuvent être utilisés comme indicateurs dusentiment de marché ; (2) mettons en évidence la présence de mémoire sur de nombreuxindicateurs de sentiment, ce qui invalide les modalités habituelles de leur utilisation,dans le cadre de stratégies contrarian. / The perfect rationality of investors, one of the foundations of theefficient market hypothesis, is increasingly being questioned. This has led to thedevelopment of behavioral finance. Market sentiment, which stems from it, is the focusof this study. Having first linked this concept to rationality and defined it, this studygoes on to present the most common ways of measuring market sentiment and assesstheir ability to anticipate market returns. Then, using two different studies, we do twothings (1) using mainly multi-Agent models and by modeling the impact of informationshocks on the distribution of returns, we empirically show how skewness and kurtosis inthe distribution of returns can be used as market sentiment indicators; (2) wedemonstrate that many standard sentiment indicators are processes affected by long- orshort-Term memory, making them invalid as contrarian indicators even though this ishow they are typically used.