This study examines the behavior of sovereign bonds to COVID-19 related news in 24 countries most affected by the COVID-19 pandemic. The study applies a continuous Hidden Markov Model (HMM) to analyze the regime shifting behavior of sovereign bonds to the news. The results show that the COVID-19...

This paper explores the impact of global climate policy announcements on the performance of the fossil fuel and alternative energy sectors. I conduct an event-study analysis around the yearly United Nations Framework Convention on Climate Change Conference of the Parties (UNFCCC COP) meetings,...

The reaction of EU bond and equity market volatilities to sovereign rating announcements (Standard & Poor's, Moody's, and Fitch) is investigated using a panel of daily stock market and sovereign bond returns. The parametric volatilities are filtered using EGARCH specifications. The estimation...

At the global level, the mispricing theory of mergers by Shleifer and Vishny (2003) may imply that a significant number of targets acquired in a given country is a sign of market-wide undervaluation whereas intense acquisition activity indicates overvaluation. The present study develops a...

This study investigated how airline stock prices respond to fuel price shocks using the asymmetric Glosten-Jagannathan-Runkle GARCH (GJR-GARCH (1,1)) model. Six airlines were selected, based on their service regions: American Airlines, Delta Air Lines, and United Airlines are larger...

We investigate the existence and significance of a cross-sectional relation between idiosyncratic volatility and expected returns at the global level by introducing a global idiosyncratic volatility measure and globally diversified test assets. We find that the portfolios with the highest and...

Oil is perceived as a good diversification tool for stock markets. To fully understand this potential, we propose a new empirical methodology that combines generalized autoregressive score copula functions with high frequency data and allows us to capture and forecast the conditional...

Using monthly returns for over 37,000 stocks from 46 developed and emerging market countries over a two-decade period, we test whether empirical asset pricing models capture the size, value, and momentum patterns in international stock returns. We propose and test a multi-factor model that...