Where:
E(R) = asset’s expected return
RF = domestic currency risk-free rate
bG = sensitivity of the asset i domestic currency returns to changes in the global market portfolio
MRPG = world market risk premium [E(RM) – RF]
E(RM) = expected return on world market portfolio
γ1 to γk = sensitivities of asset’s domestic currency returns to changes in the value of currencies 1 through k
FCRP1 to FCRPk = foreign currency risk premiums on currencies 1 through k
E(R) = RF + (b × MRP) + (γ1 × FCRP1) + (γ2 × FCRP2) + … + (γk × FCRPk).
The ICAPM tells us that the expected return on any asset i is equal to the investor’s domestic risk-free rate, plus a world market risk premium (which is scaled by the asset’s world market beta), plus a foreign currency risk premium for each foreign currency.