Author
Reon Odendaal
Bio: Reon Odendaal is an academic researcher from European Business School London. The author has contributed to research in topics: Price–earnings ratio & Post-earnings-announcement drift. The author has an hindex of 1, co-authored 1 publications receiving 6 citations.
Papers
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TL;DR: In this article, the authors focus on the earnings announcements and investigate financial market efficiency, post earnings announcement drift and the presence of abnormal returns during the assessed period and show a picture in time of stock price impacts when information is released to financial markets.
Abstract: The period of 2010-2012 was characterized by information uncertainty and market volatility. Information uncertainty is a critical characteristic of financial market behavior. The ability to absorb and distribute information is central to financial market efficiency. Uncertain corporate earnings information causes stock price volatility which in turn impacts stock price equilibrium levels. An event study shows a picture in time of stock price impacts when information isreleased to financial markets. This picture can give indications of the levels of financial market efficiency. This event study focusses on the earnings announcements and investigates financial market efficiency, post earnings announcement drift and the presence of abnormal returns during the assessed period. This study seeks to add to the existing literature of event studies.
6 citations
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27 Oct 2020
TL;DR: In this paper, the authors identify incentivized install campaigns that require users to install an app and perform in-app tasks targeting manipulation of a wide variety of user engagement metrics (e.g., daily active users, user session length) and revenue.
Abstract: "Incentivized" advertising platforms allow mobile app developers to acquire new users by directly paying users to install and engage with mobile apps (e.g., create an account, make in-app purchases). Incentivized installs are banned by the Apple App Store and discouraged by the Google Play Store because they can manipulate app store metrics (e.g., install counts, appearance in top charts). Yet, many organizations still offer incentivized install services for Android apps. In this paper, we present the first study to understand the ecosystem of incentivized mobile app install campaigns in Android and its broader ramifications through a series of measurements. We identify incentivized install campaigns that require users to install an app and perform in-app tasks targeting manipulation of a wide variety of user engagement metrics (e.g., daily active users, user session lengths) and revenue. Our results suggest that these artificially inflated metrics can be effective in improving app store metrics as well as helping mobile app developers to attract funding from venture capitalists. Our study also indicates lax enforcement of the Google Play Store's existing policies to prevent these behaviors. It further motivates the need for stricter policing of incentivized install campaigns. Our proposed measurements can also be leveraged by the Google Play Store to identify potential policy violations.
13 citations
17 Apr 2019
TL;DR: This chapter discusses the literature review, methodology, and conclusions that were reached in the second part of this book about physical evidence of climate change in Europe and Africa.
Abstract: ................................................................................................................... IIII CONTENTS ........................................................................................................................ V CHAPTER 1: INTRODUCTION ............................................................................................ 7 1.1 LONDON STOCK EXCHANGE .......................................................................................... 9 CHAPTER 2: LITERATURE REVIEW .................................................................................. 13 2.1 EMPIRICAL EVIDENCE FROM US .................................................................................... 13 2.2 EMPIRICAL EVIDENCE FROM EUROPE ............................................................................. 15 2.3 EMPIRICAL EVIDENCE FROM ASIA .................................................................................. 17 2.4 EMPIRICAL EVIDENCE FROM AFRICA AND AUSTRALIA ......................................................... 19 CHAPTER 3: DATA ........................................................................................................... 21 CHAPTER 4: METHODOLOGY ......................................................................................... 23 4.1 TESTING HYPOTHESIS ................................................................................................. 27 CHAPTER 5: EMPIRICAL RESULTS ................................................................................... 29 CHAPTER 6: CONCLUSIONS ............................................................................................ 33 BIBLIOGRAPHY ............................................................................................................... 35
2 citations
18 Jun 2018
TL;DR: Benford's law which is also known as first digit law states that data follow a certain frequency is applied to accounting by Nigrini (2012, Benford's Law: Applications for forensic accou...
Abstract: Benford’s law which is also known as first digit law states that data follow a certain frequency. This law was applied to accounting by Nigrini (2012, Benford’s Law: Applications for forensic accou...
2 citations
TL;DR: In this paper, the authors identify if there was an impact on the return of the companies that issued the governance report based on this new instruction, and show that the disclosure event of the corporate governance report had a statistically significant impact on stock returns of only a group of companies surveyed.
Abstract: The interrelation between regulation and self-regulation promotes the effectiveness of the instruments derived from the legal framework. It is efficient to handle the flaws and inherent risks. A structured financial system promotes the economic development of countries. In 2016, the Brazilian Code of Corporate Governance was approved, a work developed by GT Interagentes. In 2017, the Brazilian Securities and Exchange Commission (CVM) incorporates the document into the standard ICVM 586. The purpose of this article is to identify if there was an impact on the return of the companies that issued the governance report based on this new instruction. Corroborating the H1 hypothesis, there may be indications that the disclosure event of the governance report had a statistically significant impact on the stock returns of only a group of companies surveyed.
1 citations
Posted Content•
01 Jan 2018
TL;DR: In this article, a pesquisa analisa a reacao do mercado a divulgacao de informacoes sobre a maior instituicao de educacao listada na B3.
Abstract: O mercado e eficiente se novas informacoes relevantes causarem variacao no retorno das acoes. As acoes podem ser afetadas por eventos e isso pode causar oscilacoes. A pesquisa analisa a reacao do mercado a divulgacao de informacoes sobre a maior instituicao de educacao listada na B3. Foi utilizado o estudo de eventos para confrontar o comportamento do retorno das acoes no periodo de 30 de setembro 2015 a 30 de setembro de 2017. A pesquisa parte da teoria de mercado eficiente. As informacoes selecionadas foram distribuidas em grupos, sendo: A - Divulgacao dos resultados trimestrais; B - Operacoes de compra e venda de participacoes; C - Mudancas relacionadas ao Financiamento Estudantil. Os resultados evidenciaram que a reacao que caracterizou o fator mercado eficiente foi identificada no Grupo C, em parte corroborada pelo comportamento do preco da acao.
1 citations