This survey develops a dual analysis, consisting, first, in a bibliometric examination and,
second, in a close literature review of all the scientific production around cryptocurrencies …

This study conducts a systematic survey on whether the pricing behavior of cryptocurrencies
is predictable. Thus, the Efficient Market Hypothesis is rejected and speculation is feasible …

Bitcoin has received much attention in the media and by investors in recent years, although
there remains scepticism and a lack of understanding of this cryptocurrency. We add to the …

This study investigates the impact of the novel coronavirus (COVID-19) pandemic on stock
market efficiency for six hard-hit developed countries, namely, the United States (US), Spain …

Urquhart (2016) investigated the market efficiency of Bitcoin by means of five different tests
on Bitcoin returns. It was concluded that the Bitcoin returns do not satisfy the efficient market …

Academic research on cryptocurrencies is almost exclusively directed towards Bitcoin. We
extend existing literature by performing various tests on efficiency of several …

This paper provides strong evidence of time-varying return predictability of the Dow Jones
Industrial Average index from 1900 to 2009. Return predictability is found to be driven by …

This paper develops unit root tests for cross-sectionally correlated panels. The cross-
sectional correlation is modelled by error-component models. The test statistics we propose …

This paper empirically investigates the Adaptive Market Hypothesis (AMH) in three of the
most established stock markets in the world; the US, UK and Japanese markets using very …

We compare the long-horizon forecast performance of traditional econometric models with
machine learning methods (Neural Networks and Random Forests) for the main energy …