Developed and executed a high-yield portfolio management strategy for the Tunis Stock Exchange. Utilizing a hybrid "diamond approach," this project integrated macroeconomic, sectoral, and fundamental analyses to select high-performing securities. The initiative leveraged 10 years of historical data and applied Markowitz’s model to maximize the Sharpe Ratio for optimal asset allocation and risk management. Ultimately, the optimized portfolio achieved an annualized return of 62.22%, significantly outperforming the market benchmark's 11.16%