This paper studies the contemporaneous relationship between S&P 500 index returns and log-increments of the market volatility index (VIX) via a nonparametric copula method. Specifically, we propose a conditional dependence index to investigate how the dependence between the two series varies...

The emergence of COVID-19 has drastically transformed the way people are working along with that the productivity of firms is also affected due to this catastrophic event that happened at the end of the year 2019. The teleworking aspect has gained momentum during COVID-19 and it has been used...