The purpose of the study is to investigate whether insiders generate an abnormal return compared with other investors on the Swedish Stock Market. This abnormal return is defined as the cumulative average abnormal return (CAAR). The other purpose is to investigate whether it would be profitable for ?outsiders? to mimic the transactions of insider trades. The results indicate several significant abnormal returns on insider trades, especially on buy transactions.

Purpose: To examine how video-game releases affect the share price, and if video-game reviews have any impact on the share price of gaming corporations. Method: A quantitative deductive research approach is applied with event study methodology used as basis. The investigated companies were the five largest gaming companies listed on the U.S. NASDAQ exchange. A total of 29 video-game launches and 85 reviews where examined.  Theory: The study is based on The Efficient Market Hypothesis, Agent Theory, Public Relations Theory, Nextopia and previous research.Results: The result contains 114 observations in five companies.

Since the year of 2000 it has been legal for companies in Sweden to repurchases their own stocks. The purpose of this study is to examine if it has been possible to make a positive abnormal return in Stockholmsbörsen by buying stocks in companies that has announced a buyback program. Our study includes 59 companies that have accomplished a buyback program throw the years of 2000 to 2006. To calculate the abnormal return we use the BHAR method with Affärsvärldens generalindex and branchindex as benchmarks. The result shows a significant positive abnormal return of 23,56 percent the first 12 month after the announcement with Affärsvärldens generalindex as benchmark.

This paper aims to investigate abnormal returns for rivals to bidder targets in connection with the announcement of the bid. The study is based on 38 bids placed between September 2006 - January 2011 and 137 rival firms listed on Nasdaq OMX Nordic. We measure cumulative abnormal returns, CAR, for rival firms through an event study. We find that rival firms earn significant positive CAR in connection with the announcement of the bid. This is in line with the two-sided signaling effect presented by Akhigbe et al.

I den ha?r uppsatsen analyseras avkastningen pa? bo?rsintroduktioner genomfo?rda av Private Equity-firmor pa? den svenska marknaden under perioden 1993-2011. Studien underso?ker huruvida bo?rsintroduktioner genomfo?rda av Private Equity genererar en abnormal avkastning relativt bo?rsintroduktioner som genomfo?rts av icke Private Equity, sammanlagt 97 bo?rsintroduktioner. Ba?da urvalsgrupperna relateras gentemot ja?mfo?relseindex i form av kontrollfirmor pa? kort och la?ng sikt.

Purpose: The main objective of this study is to research whether an announcement of an acquisition generates positive/negative abnormal short-term return towards the buying company?s shareholders. The secondary purpose is to research whether any differences could be due to selected factors: firm size and industry.Method: The study is quantitative in nature where the research aims at the stock price movement around the announcement of an acquisition. The sample size includes 30 companies between the years 2000-2010. The abnormal return is investigated by an Event Study.Conclusion: Our study shows that the publication gives a positive abnormal return in comparison to the respective sector indexes.

This paper is an event study on Initial Public Offering?s return behavior after the dot com bubble. Cumulative Abnormal Returns are used to measure the performance against a market index. The results suggest that the market correctly prices IPOs in the long run thus upholding the Market Efficiency hypothesis. Moreover, value weighted CARs show that large IPOs are more likely to outperform smaller IPOs, however in the long run there is an unpredictable pattern.

The aim with this study is to investigate the market reactions to announcements of special dividends and redemptions in Sweden and thus if these announcements can signal information. This study is an event study, where the event is the day of the announcement of a suggestion regarding issuance of special dividends or redemptions. The abnormal returns were estimated for two samples with the market adjusted returns model, one including special dividend announcing firms and the other redemption announcing firms. The signalling hypothesis and the hypothesis of a tax induced clientele effect are the most important hypotheses for this study. The efficient market hypothesis is another theoretical base that may explain the market reactions to the studied announcements, especially the pre-announcement activities that may occur.

The purpose of this study is to examine the capital market reaction generated by layoff announcements. The study takes place in Sweden and tests 138 news concerning layoffs which are categorized according to a content analysis. They are divided as: positive or negative news. The layoffs are also divided into three subgroups with varying sizes: 0,98 percent or less, between 0,99 and 4,49 percent or 4,5 percent or larger. The study uses an event study method to measure the reaction of the capital market.

Question:"Does the market possess perfect information as the efficient market hypothesis says?""Is there any significant relationship between the abnormal stock return on the ex ? day and the dividend?" Purpose: The purpose of this study is to enlighten and find understanding about stock return versus dividend on the ex ? day and try to figure out if abnormal returns occur on the portfolio during dividends.Methodology:The study was based in a quantitative nature and was derived with an event study and a hypothesis testing. The authors investigated the thirty most traded shares on the Stockholm stock exchange during a period of five years (2005 ? 2009). They were analyzed during a total of nine days; the estimation window was set to sixty days.

Every day a large numbers of transactions occur by people with different backgrounds. Insiders? are a part of them and are considered to have an insight in companies that is not accessible to outsiders. This affects the market conditions for the participants when trading stocks, where individual participants regularly have the possibility to earn abnormal returns at the expense of others. Although Sweden, Germany and the United States continually keep developing the insider trading regulation, research shows that insiders? still have the ability to earn abnormal returns.

In light of the current debate on gender equality and behavioral finance, the study aims to describe whether gender differences in financial stock picking can be explained by the different multiples found within the Value Investing Theory. Furthermore, the study aims to determine which of the four portfolios, value, growth, male or female, that has had the strongest return. The results suggest that there is an association between female and value stocks as well as between male and growth stocks. Out of the four portfolios, the value and female portfolio were on average the best performers with abnormal returns..

This paper examines if trading suspensions on Nasdaq OMX Nordic - Stockholm work as a contributing factor in creating a secure trading. This has been made through an event study and examination of abnormal returns. Our results for plus tick suspensions indicate that suspensions fulfill their purpose in creating a more secure trading since the trend of abnormal return we observe prior to a suspension is disrupted. Thus, the suspension is warranted. The conclusion is that the market cannot be completely safe; as the law and practice is structured today an abnormal return is inevitable.

This paper treats the question about how the internationally established company, Apple, is affected by intern or extern events when it comes to the trade market. The purpose of the study is to investigate if chosen events create abnormal return on Apples stock market. The chosen research area is Steve Jobs three sick-listings, It-bubble and the purchase of the search engine company Siri. The reason of writing about this is the big interest for the stock market and its function.This study methodological starting position is quantitative done by an event study, with qualitative feature done by an interview with an expertise within this area. When analyzing the empirics, we have used the efficient market theory that says that information should not affect the stock market in the degree that abnormal return creates.

Denna studie utgår från de diskussioner kring IAS40 som ägde rum i svensk affärspress under 2004. Diskussionerna handlade om de möjliga risker som implementeringen av redovisningsrekommendationen IAS 40 kunde innebära för aktiemarknaden. Vårt syfte är att bidra till att en del av det informationsgap som uppstått i spåren av IAS 40 fylls. Syftet är att undersöka IAS 40s inverkan på värderingen av förvaltningsfastighetsbolag i aktiemarknaden. Studiens slutsats är att aktiemarknaden har tagit hänsyn till de nya reglerna och att de flesta nyckeltal som IAS40 påverkar saknar värderelevans..