Modelling the relationship between trading volume and stock returns volatility for Islamic and conventional banks : the case of Saudi Arabia

الملخص EN

Transparency to all parties involved in the investment process is believed to be of utmost importance in Islamic banking and finance.

Hence, the trading volume and returns volatility relationship is assumed to be weaker for sharīʿah-compliant banks compared to the conventional counterparts.

This study aims at investigating this relationship for the banking sector in Saudi Arabia.

The Granger causality tests, GARCH and EGARCH models were utilized to examine the relationship between the daily stock returns volatility and trading volume over the period of January 2015 to April 2020.

The findings of the paper support the mixture of distributions hypothesis.

Future research could look into applying different types of GARCH models to examine stock returns volatility of Islamic and conventional banks for other countries in the GCC region.