Abstract:
This study uses monthly data on net foreign purchases in Stock Exchange of Thailand (SET) from January 1997 to December 2001. The study purposes are to find out the effects of foreign investment to returns in SET by testing the relevant hypotheses. The investment strategy of foreign investors is also investigated. The relevant hypotheses compose of base-broadening hypothesis, price pressure hypothesis and omitted variables hypothesis. To examine foreign investors strategy, the positive feedback hypothesis is explored. It is found that net foreign purchase is positively correlated with returns from SET. This result is consistent with base-broadening hypothesis. The investment from foreign investors did not increase the returns due to temporary liquidity. And it is found that domestic interest rate is negatively correlated with SET's returns. Studying the foreign trading strategy, I find that foreign investors' behavior follows the positive feedback trading in long term. But in the short term, the evidence shows contradictally. Negative feedback strategy is seem to be the case. However, the net effect from the study can be concluded that foreign investors follow the positive feedback strategy.