Capital asset pricing model is used to calculate cost of equity
which is dependent on risk free rate, beta and market risk premium.
It is one of the best methods to calculate cost of equity. Risk
free rate can be obtained from 10 year US government bond. Market
return can be obtained by average returns of market over a period
of time.
Cost of equity = Risk free rate + Beta * (Market return – Risk free
rate)
Beta is the measure of systematic risk in a portfolio which can be
calculated by estimating the covariance of market return and
portfolio return by variance of market. Higher the beta the market
returns will be more related o markets returns (beta>1). For
Beta =0 the portfolio return is indifferent to market return and
Beta<0 the return of portfolio will be in opposite direction to
the market return.
Best of Luck. God Bless
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