This paper examines the random walk hypothesis in the Visegrad Countries stock market as emerging stock markets. The results both from autocorrelation analysis and unit root tests imply that monthly stock price indices of the Visegrad Countries follow the random walk process. This means that the stock markets of all the Visegrad Countries are efficient in the weak form.By employing cointegration and causality tests, we investigate the long-run and short-run relationships among these markets of the Visegrad countries and interpret the findings in the context of capital market integration.