COVID-19 government interventions and cryptocurrency market: Is there any optimum portfolio diversification?

Does the financial flexibility prevent stock price crash risk during COVID-19 crisis? Evidence from the Vietnamese stock market

“…The use of automated trading systems and complex financial instruments can amplify market movements and potentially contribute to abrupt price declines [ 4 ]. In developing countries, the financial system is often fragile, and investor sentiment is strongly affected by market fluctuations [ [5] , [6] , [7] , [8] ]. Therefore, it is vital to study SPCR in the context of developing countries.…”

Evaluating the Efficiency of Financial Assets as Hedges against Bitcoin Risk during the COVID-19 Pandemic

“…As widely acknowledged by previous studies [1,2], Bitcoin presents a highly volatile investment opportunity, but this volatility also offers substantial speculative potential. As the pandemic unfolded, numerous investigations explored Bitcoin's role, analyzing its relationship with traditional financial markets [3][4][5] and its impact on market efficiency [6].…”

The effect of the COVID-19 pandemic on multifractals of price returns and trading volume variations of cryptocurrencies

“…Other recent studies examined various topics related to cryptocurrencies and found interesting results. For instance, the authors in [17] concluded that the government interventions; measured by Oxford COVID-19 Government Response Tracker; have negative impact on the cryptocurrency market and that the optimal portfolio during the COVID-19 is composed of Dogecoin cryptocurrency and oil markets. In [18] , it was found that the COVID-19 pandemic caused an increase in the risk transmission from Bitcoin and Ethereum to international stock market returns and a reduction in the cost of hedging.…”