The same pattern emerges as in the previous plots. For small values of J, we find [สมการ] , but as the
Horizon increases, the sign of the covariance reverses. The pattern of coefficient estimates is not as
Snooth because the regressions use ex post rather than ex ante returns, but the reversal of sign is
Unmistakable. of course, to calculate [สมการ] , because there are only a finite number of realizations of ex post returns in our sample. Although we could calculate a truncated sum,
the disadvantages of this procedure are well known from the literature. This problem partly motivated the development of the Campbell and Shiller (1987,1988) technique , which is closely related to our approach
The same pattern emerges as in the previous plots. For small values of J, we find [สมการ] , but as theHorizon increases, the sign of the covariance reverses. The pattern of coefficient estimates is not as Snooth because the regressions use ex post rather than ex ante returns, but the reversal of sign isUnmistakable. of course, to calculate [สมการ] , because there are only a finite number of realizations of ex post returns in our sample. Although we could calculate a truncated sum, the disadvantages of this procedure are well known from the literature. This problem partly motivated the development of the Campbell and Shiller (1987,1988) technique , which is closely related to our approach
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