Dynamic relationship between stock return, trading volume, and volatility in the Stock Exchange of Thailand: does the US subprime crisis matter?

Using daily data from 2004 to 2015, this paper attempts to examine the relationship between return, volume and volatility in the Thai stock market. The main findings are that trading volume plays a dominant role in the dynamic relationships. Specifically, trading volume causes both return and return volatility when the US subprime crisis is taken into account. The results may give understanding on how investors make their trading decisions that can affect portfolio adjustment