The capital asset pricing model (CAPM) is widely used to calculate the expected return of equity shares, considering their risk relative to a stock market portfolio. The CAPM is ill-suited to valuing assets that lack stock’s spot market price volatility. Thus, we argue that the CAPM should not be used to determine the arm’s length remuneration for the intra-group transfer of intangibles.
The CAPM is postulated in a simple linear fashion:
(1) R = μ + β (M – μ)
where R denotes the one-period return of the selected company stock and M denotes the one-period return of the reference (benchmark) stock market index, such as the Standard & Poor’s 500 Index. The intercept μ denotes a country specific default risk-free sovereign interest rate, and the slope β is regarded as an equity risk-coefficient.
The (“capital gain”) stock price return R = LN(P/P(−1)), where P is the selected company stock price; and the market index return M is defined in similar logarithm calculation.