Are financial markets efficient? One proposition that seems to contradict this is Shiller's finding of excess volatility in asset prices and its resulting rejection of the discounted cash flow model. This paper replicates Shiller's approach for a different data set and extends his analysis by...

One empirical argument that has been around for some time and that clearly contra- dicts equity market efficiency is that market prices seem too volatile to be optimal estimates of the present value of future discounted cash flows. Based on this, it is deduced that systematic pricing errors...

Abstract: Viele Indizien aus der Historie der Aktienmärkte weisen auf Ineffizienz hin. Aber warum spielt die Effizienz der Aktienmärkte eine Rolle? Da sie eine zentrale Voraussetzung für hohes volkswirtschaftliches Wachstum darstellt. (Mishkin und Eakins, 2006, S. 3-4)In drei Aufsätzen...

Summary A common joke among economist is: Why has god created meteorologists? To make the forecasts of economist look less bad! At the heart of this joke stands the critique that economic forecasts are notoriously inaccurate. Prediction Markets are an attempt to improve these forecasts by...

The article tests for a random walk in European equity style indexes. After briefly introducing the efficient market hypothesis, equity styles in general and the used statistical techniques (Variance Ratio Test and modified Rescaled Range Test) it is shown that a random walk in European equity...