The paper examines the validity of the three theories of stock price behaviour in Malaysia: Efficient Market Hypothesis (EMH)/Random Walk Hypothesis (RWH), Technical Analysis and the Fundamental Theory. The sample consists of the Malaysian stock market indices, Singapore stock market price index, USA Dow Jones Industrial Average, Japan Nikkei index and stock prices of 30 Malaysia companies across various sectors, annual data of 1982 through 1993, and weekly data of period 1977 through April 1994. The correlation analysis, time series analysis and multiple regression techniques have been employed to analyse the data. The findings support the usefulness of the technical analysis and fundamental approach to stock pricing and reject the efficient market hypothesis for Malaysia.