This study examined the relationship between stock market index and selected
macroeconomic variables during the post-financial liberalization (pre-financial crisis) and postfinancial
crisis in Thailand. In the empirical analysis, unit root, cointegration and Granger
causality tests were performed. The post-financial liberalization results showed that the stock
market index, the industrial production index, money supply, exchange rate, and world oil prices
contained a unit root and were integrated of order one. Johansen cointegration test was then
employed. The results showed at least one cointegrating or long-run relation between the stock
market index and a set of macroeconomic variables. Money supply had a positive impact on the
stock market index while the industrial production index, the exchange rate and oil prices had a
negative impact. During the post-financial crisis, all variables were integrated at different orders.
Cointegration existed between the stock market index and macroeconomic variables. In addition,
the Granger causality test indicated money supply was the only variable positively affecting the
stock market returns.