Parcourir Faculté des arts et des sciences par sujet "efficacité des marchés"
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Sampling Interval and estimated Betas : Implications for the Presence of Transitory Components in Stock Prices
(Université de Montréal. Département de sciences économiques., 1998)We provide a theoretical framework to explain the empirical finding that the estimated betas are sensitive to the sampling interval even when using continuously compounded returns. We suppose that stock prices have both permanent and transitory components. ... -
Tests of Conditional Asset Pricing Models in the Brazilian Stock Market
(Université de Montréal. Département de sciences économiques., 1997)In this paper, we test a version of the conditional CAPM with respect to a local market portfolio, proxied by the Brazilian stock index during the 1976-1992 period. We also test a conditional APT model by using the difference between the 30-day rate ...
