Indonesia Stock Exchange Securities Buy/ Sell Signal Detection using Bollinger Bands and Williams Percent Range

For stock investor, it is important to be able to predict future stock prices to find out the possible gains or losses obtained. In the world of stock investment, stock price prediction is applied with two approaches, namely analysis and fundamental analysis. This detection application system was developed using a technical analysis approach.Technical analysis is a method used to observe price fluctuations in a certain time span by utilizing historical data using indicators. Bollinger Bands and Williams Percent Range are indicator used in this study to provide information on the movement of a stock by observing a particular pattern of patterns used as a basis for buying or selling. The data used in this study is six companies whose shares are listed as LQ45 in Indonesia Stock Exchanges. The results show that the combination of indicators over a period of one year can provide the greatest benefit, namely by 80.20% in Aneka Tambang shares and the average performance of a total of 6 shares is 10.72% using strategy 1, an Exit Bollinger with confirmation by Williams Percent Range.