The article investigates how theoretical portfolio selection models can be applied to real-life stock markets, specifically focusing on India's National Stock Exchange. The researchers emphasize the importance of creating practical and user-friendly models that cater to the diverse needs and preferences of investors. They found that a one-size-fits-all approach may not work due to variations in investors' risk tolerance and investment goals. This highlights the significance of developing adaptable portfolio selection models for effective decision-making in the stock market.