Investment portfolios is a core concept within financial economics concerning the collection of various financial assets held by an individual or institution. As an academic concept and methodological approach, it investigates the principles and techniques for selecting, allocating, managing, and evaluating diverse sets of assets—such as stocks, bonds, and alternative investments—to achieve specific financial objectives while managing risk. Its key characteristics include the analysis of asset diversification, the optimization of the risk-return trade-off, and the strategic allocation across different asset classes. The significance of studying investment portfolios lies in its fundamental role in understanding wealth management, capital allocation efficiency, and the dynamics of financial markets.