Güzel, Fatih; Acar Boyacioğlu, Melek - In: CES working papers 13 (2021) 1, pp. 50-70
1 pandemic caused an increase in BIST 100 Index volatility, and negative news rather than positive news was effective on … BIST 100 volatility. In addition, the effects of COVID-19 pandemic on BIST in the current situation were evaluated. During … the pandemic period, the excessive increase in volatility and the negative trend in the return series are remarkable …