Standard equity valuation approaches (i.e., DDM, RIM, and DCF model) are derived under the assumption of ideal conditions, such as infinite payoffs and clean surplus accounting. Because these conditions are hardly ever met, we extend the standard approaches, based on the fundamental principle of...

Previous empirical studies derive the standard equity valuation models (i.e., DDM, RIM, and DCF model) while assuming that ideal conditions, such as infinite payoffs and clean surplus accounting, exist. Because these conditions are rarely met, we extend the standard models by following the...

This paper contains a collection and classification of 119 errors seen in company valuations performed by financial analysts, investment banks and financial consultants. The author had access to most of the valuations referred to in this paper in his capacity as a consultant in company...

The solution to dynamic portfolio choice models can be formulated in terms of a value function by the Bellman principle of optimality, which reduces the multi-period optimal policy choice problem to a sequence of one-period maximization problems. For two adjacent periods, economists compute the...

Portfolio optimization often struggles in realistic out-of-sample contexts. We de-constructthis stylized fact, comparing historical forecasts of portfolio optimization inputs withsubsequent out of sample values. We confirm that historical forecasts are imprecise guidesof subsequent values but...

A new estimator is proposed for linear triangular systems, where identification results from the model errors following a bivariate and diagonal GARCH(1,1) process with potentially time-varying error covariances. This estimator applies when traditional instruments are unavailable. I demonstrate...

Spanish Abstract: Esta nota recoge los10 errores más habituales con los que los autores se han encontrado al tratar con abogados en pleitos, en arbitrajes, en consejos de administración, en clase y en adquisiciones. Los errores que se comentan no son exclusivos de los abogados: participan de...