This study is distinct from pervious studies in two folds. Firstly, this study fills the gap of limited research on emerging mutual funds. Secondly, this study explores determinants of mutual fund growth at the asset management corporation level. Research on emerging market mutual funds are performed at mutual fund level. Nazir (2010) assessed determinants of mutual fund growth focusing on equity funds in Pakistan. Analysis of Thai mutual fund industry and competitive situation are elaborated in section 2. Data, model, and methodology are discussed in section 3. The last section concludes the paper together with comments and policy.