This thesis addresses two important issues necessary to understand whether insider trading should be prohibited: the effects of insider trading on stock prices and the compensation to insiders for providing information and other related services. This task is accomplished by analyzing stock price changes during corporate takeovers, before and after the regulatory changes in the 1980's that were designed to reduce the level of insider trading. In this thesis, we develop an indirect measure of insider trading that shows how observable stock price movements during takeovers allow one to make inferences about changes in insider trading after regulatory changes. Specifically, we show that when inside information is partially revealed to the market, the effects of regulatory changes on insider trading can be identified by examining the price movements of stocks around takeover announcements. If, however, information is not revealed at all or is fully revealed, it is impossible to identify the effects of regulatory changes on insider trading. We also develop a segmented diffusion model to analyze price movements characterized by cumulative abnormal returns during the period surrounding a takeover announcement. An econometric model is developed to estimate the segmented diffusion model. Naturally, this methodology applies to the study of various events in addition to corporate takeovers and regulatory changes. We conduct empirical analysis to test three hypotheses. With regard to Hypothesis I, we find strong evidence that the tightening of insider trading regulations in the 1980's was effective and that inside information was partially revealed to the market. With regard to Hypothesis II, we find evidence that insider trading regulations have more effect on negotiated takeovers than on takeovers initiated by bidding. With regard to Hypothesis III, we find weak evidence that insiders associated with acquiring firms seek fewer but more profitable takeovers after the introduction of tighter regulations. / Business, Sauder School of / Graduate

Orientador: Fernando Sarti / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Economia / Made available in DSpace on 2018-08-14T12:03:33Z (GMT). No. of bitstreams: 1 Valente_FredericoSantosPedrozaFerreira_M.pdf: 1108498 bytes, checksum: 646b1bf4faf023d08d248823de4ee7be (MD5) Previous issue date: 2009 / Resumo: Este trabalho analisa e discute os movimentos de fusões e aquisições na indústria mundial do petróleo a partir da década de 90, sob a ótica da dinâmica de acumulação de capital das empresas líderes. O objetivo é fornecer uma visão integrada de tais movimentos que possa ser utilizada para discutir seus impactos sobre o padrão de concorrência da indústria. Para tanto, julga-se ser fundamental resgatar a contribuição de Steindl para o entendimento da dinâmica industrial e discuti-la no âmbito dos processos de consolidação e reestruturação de estruturas de mercado oligopolísticas que ocorrem através de movimentos amplos de fusões e aquisições. Trata-se de mostrar a forma pela qual é possível descrever teoricamente certos padrões sistêmicos para os movimentos de fusões e aquisições a partir da estrutura analítica steindliana. / Abstract: This dissertation analyzes and discusses the merger and acquisition processes in the global oil industry since the early 90's, from the perspective of capital accumulation dynamics of the leader companies. The aim is to depict an integrated explanation of such processes that could be used to understand its impacts on competition trends in industry. Accordingly, it is essential to recollected Steindl's contribution in order to understand the industrial dynamics, as well as to apply its concepts to discuss the process of consolidation and restructuring in the oligopolistic market that occur through large mergers and acquisitions. It means to demonstrate that it is possible to describe in theoretical terms certain systemic patterns to merger and acquisition processes through the steindlian analytical framework. / Mestrado / Teoria Economica / Mestre em Ciências Econômicas

The purpose of this study was to examine the current research on mergers and acquisitions which includes organizational factors, such as communication processes, and their impact on employee reactions. The current study addresses this issue through a simulated M&A announcement laboratory experiment with 156 CSUSB undergraduate students.

Only in about 35 percent of mergers do companies meet their pre-merger goals. One cause of these failures is attributed to the unstable work environment created by a pending merger. Previous research has focused on post-merger attitudes of employees. The purpose of the current study was to explore communication processes in announcing a merger. Scenarios were used to simulate merger announcements.

The primary purpose of the study was to investigate whether takeover markets are allocationally efficient using Tobin's q as the variable which summarizes the investment opportunities of firms. Chapter I presented the purposes, hypotheses, methodology, and limitations of the study. The two hypotheses proposed were as follows: Acquiring firms' q should be significantly higher than that of control firms, on average, and target firms' q should be significantly lower than that of control firms, on average. Chapter II presented the review of literature on takeovers and theory of investments. Chapter III presented the research design adopted to test the above hypotheses. The methodology to calculate q-values and methods to reduce the bias which may result from choice-based sampling were also given. A paired comparison t-test was employed to test the hypotheses. Sample firms were selected from the COMPUSTAT RESEARCH and COMPUSTAT INDUSTRIAL tape.

Theses / The Competition Act no.89 of 1998 coupled with its amendments ushered in a new era in the competition analysis and merger approval process in South Africa. This research paper's purpose is to intimately explore the emergent doctrine of "public interest" institutionalized in this new dispensation of competition legislation. In particular this report places under the spotlight the treatment of public issues in case law jurisprudence as developed in the consideration and determination of large and notifiable mergers under the auspices of the competition tribunal of the Republic of South Africa since the inception of the said new legislative order. The efficacy of the determination of socio-political issues and pure competitive efficiency issues separately but under and by the same entity are also examined. The contrast between the South African approach to the application of the doctrine of the public interest and that of some other competition jurisdictions abroad is also explored.

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