This assignment delves into a comparative analysis of two publicly traded companies, CBA (Commonwealth Bank of Australia) and Rio Tinto, focusing on their investment potential. Students are required to calculate various financial metrics, including holding period returns, standard deviations, beta coefficients, and expected returns for both stocks. The task involves constructing a portfolio consisting of these two stocks with specified weightages and determining its overall return, risk level (beta), and comparing it to the individual companies' performance. The analysis culminates in an investment recommendation based on the calculated metrics.