Investigating Cost of Equity - Gordan Growth Model (GGM) vs Capital Asset Pricing Model (CAPM)

What Is the Cost of Equity?
The cost of equity is the return that a company must realize in exchange for a given investment or project. When a company decides whether it takes on new financing, for instance, the cost of equity determines the return that the company must achieve to warrant the new initiative. Companies typically undergo two ways to raise funds: through debt or equity. Each has differing costs and rates of return.

How Do You Calculate the Cost of Equity?
There are two primary ways to calculate the cost of equity. The dividend capitalization model takes dividends per share (DPS) for the next year divided by the current market value (CMV) of the stock, and adds this number to the growth rate of dividends (GRD), where Cost of Equity = DPS ÷ CMV + GRD. Conversely, the capital asset pricing model (CAPM) evaluates if an investment is fairly valued, given its risk and time value of money in relation to its anticipated return. Under this model, Cost of Equity = Risk-Free Rate of Return + Beta × (Market Rate of Return – Risk-Free Rate of Return).