This research explores the application of possibility theory in the stock market, aiming to improve trading outcomes by integrating various technical indicators. The study focuses on the Relative Strength Index (RSI), Moving Average Convergence/Divergence (MACD), and Moving Average Crossover (MAC) to generate actionable buy, sell, or hold signals. By using possibility theory to combine these indicators, the research seeks to provide a more accurate assessment than individual indicators alone. Results indicate that the possibility theory-based approach significantly enhances returns while mitigating risk compared to traditional methods.