Abstract:
The objective of this research was to study the relation between the performance and good corporate governance with institutional investors of the SET 100 stock market index in the Stock Exchange of Thailand during the year 2014 to 2018. The sample group used in the study consisted of 69 companies, and there was a total of 345 data. Descriptive statistics used to analyze and explain basic data of variables in the study consisted of average, maximum value, minimum value, standard deviation and percentages for dummy variables, and then multiple regression analysis was used to test the hypothesis related of the relation between Thai and foreign institutional investors and the cooperates performance. Binary Logistic Regression was used to predict whether probability of institutional investors had relation with corporate governance scores. This was done by dividing the variables into 2 groups, namely 314 data with good corporate governane score, and 13 data without the good corporate governance score. The good corporate governance was represented by the dummy variable 1 and corporate without good corporate governance was represented by the dummy variable 0. Statistical significance was determined at the level of 0.05
The research results were tested by using multiple regression statistics. It was found that Thai institutional investors had a postitive relation with the corporate performance (Tobins Q), while the relation between foreign institutional investors and the corporate performance was not found. In addition, other variables, including service industry groups and agro-food industry groups, were positively correlated with corporate performance. However, the business size and capital structure had a negative relation with corporate performance. Business age had no statistically significant relation with the performance results. In addition, the research result using a Binary logistic test to test the relation between the corporate governance scores with a dummy variable revealed that Thai institutional investors had a positive relation with good corporate governance scores while the relation was not found between foreign institutional investors and good corporate governance. However, the capital structure had a negative relation with good corporate governance scores. Other variables including industry group, the age of the business, and the size of the business were not correlated with the good corporate governance scores at the statistical significance of 0.05.