The article discusses how investors can choose the best mix of stocks from the National Stock Exchange to balance risk and return. By using the Markowitz model, investors can find the optimal portfolio that gives the highest return for the least risk. Diversifying investments helps reduce risk, allowing for more stable growth even in changing market conditions. The study focuses on the Indian Stock Market from 2009 to 2019, showing that understanding investor attitudes towards risk and return is crucial for making smart investment choices.