Prior studies on the price formation in the Bitcoin market consider the role of Bitcoin transactions at the conditional mean of the returns distribution. This study employs in contrast a non-parametric causality-in-quantiles test to analyse the causal relation between trading volume and Bitcoin returns and volatility, over the whole of their respective conditional distributions. The nonparametric characteristics of our test control for misspecification due to nonlinearity and structural breaks, two features of our data that cover 19th December 2011 to 25th April 2016. The causality-in-quantiles test reveals that volume can predict returns -except in Bitcoin bear and bull market regimes. This result highlights the importance of modelling nonlinearity and accounting for the tail behaviour when analysing causal relationships between Bitcoin returns and trading volume. We show, however, that volume cannot help predict the volatility of Bitcoin returns at any point of the conditional distribution. Keywords: Bitcoin; Volume; Returns; Volatility; Nonparametric Quantile Causality.  • Examine causal relation between Bitcoin return/volatility and traded volume. • Detect nonlinearity and structural breaks in the return-volume relationship. • Misspecified linear causality test shows no evidence of causality. • Use instead nonparametric causality in quantile test. • Reveal that volume can predict returns, but not volatility, at some quantiles.
Returns and volatility perspective when using Bitcoin volume analysis is discussed in REF .
Can volume predict Bitcoin returns and volatility? A quantiles-based approach
Economic Modelling
Economics