This paper proposes a novel standardized test for abnormal returns in long-horizon event studies that takes into account cross-sectional correlation, autocorrelation, and hetersoskedasticity of stock returns. Extensive simulation analyses demonstrate improved size and power of testing relative...

We examine the effects of the North Korea-U.S. summit and related events on the South Korean stock market over the period March 2018 to June 2018. Employing the event study methodology, we estimate sectoral abnormal returns following the events surrounding the summit and conduct several...

We assess the effect of the recent royal wedding of Prince Harry and Meghan Markle on various sectors of the UK stock market over the period between November 2017 and May 2018. For this purpose, the event study methodology is used to estimate abnormal returns and conduct several robustness tests...

As the world falls into crisis mode, it becomes the time to make policy decisions that steer the course of a nation and push it across to the other side. During the Ukraine Conflict, many countries swooped in as the saving grace to Ukraine against the militaristic actions taken by the Russian...

This paper investigates the robustness of existing long-run event study methodologies using the Asia-Pacific security market data. In doing so, the study employs the buy-and-hold abnormal return approach and the calendar time portfolio method to measure the return anomalies. Since each of these...

We investigate the use of machine learning (ML) and other robust-estimation techniques in event studies conducted on single securities for the purpose of securities litigation. Single-firm event studies are widely used in civil litigation, with billions of dollars in settlements hinging on the...

This study provides evidence of the very short-term element impact of news on sovereign spreads, validating market-sentiment effects even under unchanged fundamentals, as applicable during select dates in the Greek crisis narrative. The event study is performed for five key dates corresponding...

Purpose: It is worth mentioning that mergers and acquisitions (M&As) have become a popular vehicle for emerging-markets firms to rapidly access new opportunities and market capabilities. Indeed, privatization and multi-nationalization have given a greater shore up in raising global and domestic...

Many interdisciplinary studies of the 2007–2008 global financial crisis examine the causes of crisis, corporate governance and firm value, stock market efficiency, new firm registration, macroeconomic performance, and compare this crisis to previous crises. However, we do not find conceptual...

We investigate the impact of 19 announcements of environmental regulation on the equities listed on the Australian Stock Exchange over the period 2005–2011. Using a well-established event study methodology, we assess whether these announcements are value constructive or destructive for equity...