Are Stock Prices Predictable in the Tehran Stock Exchange

The difficulty of determining intrinsic value of stock prices have led many people to use technical analysis in order to forecast stock prices in the future. To predict the stock price we need to determine the generating process of stock prices. In recent years many time - series methods have been used for forecasting purposes. One of these methods is the Rescaled Range Analysis (RIS). In the article the R/S Analysis was used to predict the price of Shahd common stock pries. The resutls showed that stock price changes are not random and we can predict the future stock prices based on the last fifty day stock prices .