Revisiting the cryptocurrencies role in stock markets: ADCC-GARCH and Wavelet Coherence

Abstract

The current study analyses five major cryptocurrencies and four global stock markets to explore the hedging, safe haven and diversification roles of cryptocurrencies by employing ADCC-GARCH and Wavelet Coherence Technique. The study has found that stock and cryptocurrency markets return have high volatility persistence in the long run and confirms the bi-directional volatility transmission. Also, the hedging capacity of digital currencies varies depending on market choice. Tether operates as the most effective diversifier for all studied stock indices and is a strong safe haven asset during market turmoil. It is also documented that majority of cryptocurrencies cannot offer diversification advantages.