This study investigated the impact of the levels of liquidity of Initial Public Offering (IPO) stocks on the long-run performance of IPOs over a five year period. In addition the study sought to investigate if the levels of liquidity of IPO stock were significantly higher than non-IPO stock. The methodology used was the calendar time portfolio approach based on the Fama-French regression equation. The study found that over a five year period IPOs did not underperform or over-perform the market. In addition the study found that the liquidity levels of IPOs were not significantly higher than non-IPOs. While the lower liquidity levels help explain the fact that the IPOs did not underperform the market, they do not indicate the existence of a liquidity risk premium on the Johannesburg Stock Exchange (JSE). / Dissertation (MBA)--University of Pretoria, 2011. / Gordon Institute of Business Science (GIBS) / unrestricted

The study examines the returns for new and existing holdings in Swedish actively managed equity funds. The hypothesis is based on fund managers paying more attention and effort to analyze and finding new investments for the portfolio than they do to update the analyzes for the existing holdings. The managers can therefore be assumed to create information benefits which in turn generate a higher return for new than existing holdings. Calendar-Time Portfolio Approach is used to measure the development of new and existing holdings. Alpha estimates are performed using the Fama and French (1993) three-factor model and the Carhart (1997) four-factor model. When alpha is estimated using the Carhart four-factor model, the study finds that new holdings generate a slightly higher average return per month, 0.95%, compared with the existing holdings, 0.87%. The study finds similar results when alpha is estimated using the Fama and French three-factor model. The difference was not statistically significant for either method and can therefore be assumed to be random. / I studien undersöks avkastningen för nya, respektive befintliga innehav i svenska aktivt förvaltade aktiefonder. Hypotesen baseras på att fondförvaltare lägger mer uppmärksamhet och ansträngning på att analysera och finna nya investeringar till portföljen än vad de gör för att uppdatera analyserna för de befintliga innehaven. Förvaltarna kan därför antas skapa informationsfördelar som i sin tur genererar en högre avkastning för nya än befintliga innehav. För att mäta utvecklingen av nya respektive befintliga innehav används Calendar-Time Portfolio Approach. Skattningar av alfa genomförs med Fama och French (1993) trefaktormodell och Carhart (1997) fyrfaktormodell. När alfa skattas med Carhart fyrfaktormodell finner studien att nya innehav genererar en något högre genomsnittlig avkastning per månad, 0,95 %, jämfört med de befintliga innehaven, 0,87 %. Studien finner liknande resultat när alfa skattas med Fama och French trefaktormodell. Differensen var inte statistiskt signifikant för någon av de två metoderna och kan därmed antas slumpmässig.

Through overviewing the merger waves during the last century, we know the latest two waves result mainly from technological innovation. With the presence of M&A market, acquirers are able to gain innovation capacities by taking over innovative targets. Innovation is considered to be a source of synergies and a major motive for M&A decision. Therefore, my research focuses on whether acquisitions for innovation create value for investors in short-term and long-term perspective. By using various innovation measures, I employ event study and calendar time portfolio to examine the significance of abnormal returns. I find the abnormal returns of bidding innovative targets do not show significant difference from the peers in short-term market reaction. However, in the long-run, the group with innovative targets reports significant abnormal returns. Under multiple regression analysis, I find patent counts, total citations, and citation-weighted patent counts have positive relation with abnormal returns under WLS procedure, while only average citation yields the most consistent result under both OLS and WLS. Lastly, I confirm the relation between abnormal return and average citation measure by employing calendar time portfolio approach.

När ett bolag tar in kapital genom en emission kan de antingen använda sig av en riktademissionen eller av en företrädesemission. Tidigare forskning har visat att bolag har ennegativ aktieutveckling efter en nyemission. Senare forskning har visat att både valet avvilken typ av emission som bolaget använder sig av, och det annonserade motivet tillemissionen, påverkar avkastningen. Syftet med denna studie är att undersöka abnormavkastning på kort och lång sikt, samt skillnader i avkastning, för de två olikaemissionstyperna. Kort sikt defineras i studien som två dagar, annonseringsdagen samtnästföljande handelsdag, medan lång sikt defineras som 12 månader. Vi mäter även om detannonserade motivet påverkar den kortsiktiga avkastningen. Urvalet består av 187observationer från bolag noterade på Stockholmsbörsen mellan 2012-2016. Bolag somannonserar om att de behöver ta in kapital genom en företrädesemission, har en abnormnegativ avkastning vid annonsering, men ingen abnorm avkastning på lång sikt. För bolagsom valde att ta in kapital genom en riktad emission har ingen annonseringseffekt kunnaturskiljas, men den långsiktiga avkastningen är positiv. Om motivet till en nyemission ärförenat med en investering, förvärv eller expansion, har företagets aktiekurs i genomsnitt haften positv utveckling.

<p>This dissertation studies the impact of mutual fund managers' beliefs on fund performance in the first chapter and focuses on the impact of firm behavior on stock performance in the second chapter. </p> <p><br></p> <p>In the first chapter, I utilize the Revealed Preference Theory to recover fund manager belief formation directly from their actual trading activities. By relating stock holdings in a fund's portfolio to past factor returns, I document three facts about managers' belief formation: 1. In contrast to belief extrapolation, a substantial fraction of mutual fund managers act as contrarian investors who expect lower factor returns after a good factor performance; 2. Whether a fund trades in an extrapolative or contrarian way is due to its managers' expectation biases rather than fund style investment strategy, fund catering strategy or fund risk preference; and 3. Contrarian managers generate superior performance, are more experienced investors, charge higher expense ratios, and manage smaller US equity funds. The top (contrarian) managers significantly outperform the bottom (extrapolative) managers by a return of 3.4% per annum after adjusting by FFC4 factor models.</p> <p><br></p> <p>The second chapter is co-authored paper with Yan Liu and Feng Zhang. In this chapter, we systematically replicate the bulk of long-run event studies conducted in the last three decades from 1990 to 2020 using extended samples and four long-run performance measures. The final sample contains 62 papers of long-run event studies and 148 corporate events. Our findings suggest that long-run return anomalies documented in the last three decades are not robust, and firms do not earn long-run abnormal returns following various types of corporate events. Only 2% of the 148 corporate events we replicate earn post-event abnormal returns that are statistically significant at the 5% level based on all the four performance measures, and the fraction further shrinks to 0% at the 1% significance level. Viewed together, our findings suggest that these long-run abnormal returns after corporate events are likely the result of data mining or "p-hacking".</p>