This document discusses valuation models for common stock, including the constant growth model. It begins by explaining that common stockholders own the corporation and are interested in the cash flows from dividends and stock price changes. The constant growth model values a stock based on expected future constant dividend growth. It provides an example of calculating a stock's value given dividend and growth rate inputs. The document also discusses two-stage growth models for non-constant growth situations and explores implications of different growth rates for valuation.