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European Market Infrastructure Regulation (EMIR) is aimed at derivative trading and could impact the cost of debt capital. We …. We also show that the news have asymmetric effects with tighter regulation news more frequently leading to significant … responses in average abnormal returns (AARs) than loosening regulation news …
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The calculation of expected returns is a necessary ingredient in data processing for an event study. The method most commonly used, the market model, often fails to meet the OLS requirement of normally distributed residuals, and tends to furnish regression output (low R2, and insignificant t-...
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This paper proposes a new approach to control the effects of time-varying parameters on the estimates of abnormal returns. Event studies usually assume that the parameters of the market model are stable. Using a sample of firm takeovers, however, I find that this assumption is indeed rejected....
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