This document provides an overview of investment banking, equity research, and equity valuation models. It discusses the functions of investment banks in raising corporate finance. Equity research involves fundamental analysis, including economic, industry, and company analysis, as well as technical analysis based on supply and demand. Equity valuation models covered include the Capital Asset Pricing Model (CAPM), Dividend Discount Model (DDM), and price-earnings ratios, which relate stock price to earnings per share. The document aims to explain these key concepts in investment banking and equity analysis.