Extreme events are ubiquitous in nature and social society, including natural disasters, accident disasters, crises in public health (such as Ebola and the COVID-19 pandemic), and social security incidents (wars, conflicts, and social unrest). These extreme events will heavily impact financial...

"Asymmetric Dependence (hereafter, AD) is usually thought of as a cross-sectional phenomenon. Andrew Patton describes AD as "stock returns appear to be more highly correlated during market downturns than during market upturns." (Patton, 2004) Thus at a point in time when the market return is...