Schweser Book 3 Page 232: first term if E® derived from APT Schweser Book 4 Page 58: first term is rfr what’s going on here, whats the difference between the two
oh i think the first one is to find the expected return and the second one is to find the equity risk premium
Key is that factors in APT can be macro or non-macro so is the case with Factor models. They are both macro models. You can have a macro APT and a macro factor model
so they both measure required return?
Yes but the way parameters (risk premia and sensitivities) are estimated are different