Proceedings of World Business and Social Science Research Conference 25-25 October, 2013, Novotel Bangkok on Siam Square, Bangkok, Thailand, ISBN: 978-1-922069-33-7 Stock Market Integration: Are Risk Premiums of International Assets Equal? Kusdhianto Setiawan This paper studies previous researches on capital market integration and applies a simple international capital asset pricing model by considering the incompleteness in market integration and heteroscedasticity of the market returns. When we disregards those two factors, we found that stock markets were integrated and law of one price on risk premium prevails. However, when the factors were considered, the markets were just partially integrated. JEL Codes: G11, G12, G15 ______________________ 1 Faculty of Economics and Business, Universitas Gadjah Mada, Jl. Sosio Humaniora 1, Bulaksumur, Yogyakarta 55281, Indonesia, E-mail: kusdhianto@feb.ugm.ac.id