Based on a classical financial market model different model variants known from the literature are discussed and analyzed, each focussing on modeling financial markets as a nonlinear dynamic system by introducing the formation of (heterogeneous) beliefs about future asset prices into the model...

Trotz jahrzehntelanger Forschung zur Gültigkeit der Hypothese informationseffizienter Kapitalmärkte (EMH) sind wesentliche damit verbundene Fragestellungen noch immer ungeklärt. Eine ist diejenige nach der Existenz und der Erklärung von zeitvariablen Überrenditen ("Time Varying Excess...

Using a unique data set that contains the complete ownership structure of the German stock market, we study the momentum and contrarian trading of different investor groups. Foreign investors and financial institutions, and especially mutual funds, are momentum traders, whereas private...

Modern financial markets offer the real world's best approximation to the idealized price auction market envisioned in economic theory. Nevertheless, as the increasingly exquisite and detailed financial data demonstrate, financial markets often fail to behave as they should if trading were truly...