This point can be demonstrated using the RIM. A properly specified regression of market returns on firmamental information requires that the right-hand side be some
measure of the change in the expectation of future abnormal earnings between the beginning
and the end of the year. In other words, market return should be regressed on the
change in the intrinsic value estimate, scaled by the beginning firm value (i.e., a measure
like AV / Vj). Liu and Thomas (1999) compute such a measure and show, not surprisingly,
that the correlation with contemporaneous returns increases dramatically when compared
to regressions that contain only a linear combination of historical accounting numbers