This document analyzes the financial performance of Caterpillar (CAT) through various ratios and analyses over multiple years. It includes vertical analysis of profitability and leverage, horizontal analysis of liquidity, operating efficiency, and profitability/leverage. It also contains DuPont analysis breaking down return on equity for CAT, CNH Global, and United Technologies. Finally, it discusses beta coefficients and uses the capital asset pricing model to calculate expected returns for these companies based on their risk levels.