The surge in international asset trade since the early 1990s has lead to renewed interest in models with international portfolio choice, an aspect that was largely cast aside when the ad-hoc portfolio balance models of the 1970s were replaced bymodels of optimizing agents. We develop the...

Considered here is on-line portfolio management aimed at maximizing the long-run growth of financial wealth. The portfolio is repeatedly rebalanced in response to observed returns on diverse assets. Suppose statistical information and related methods are not available - or deemed too diffcult....

The paper shows that financial market equilibria need not exist if agents possess cumulative prospect theory preferences with piecewise-power value functions. The reason is an infiniteshort-selling problem. But even when a short-sell constraint is added, non-existence can occur due to...

Control problems with Recursive Multiple-Priors Utility (RMPU) are highly non-linear so that RMPU asset prices have been studied in very simple exchange economies only. We identify a continuous-time exchange equilibrium with Locally-Constrained-Entropy RMPU (LCE-RMPU) that is tractable even in...

This paper examines the characteristics of firms that voluntarily provide interim financial reports. Based on a sample of Swiss companies, where semi-annual reports became mandatory in 1997, I document that before interim reports became mandatory, analyst coverage, i.e. analysts demand for...

Seit Begründung der modernen Portfoliotheorie ist bekannt, daß die Portfoliovolatilität im Fall niedriger Korrelationen zwischen den Anlageklassen bei sonst gleich bleibenden Parametern ohne Renditeeinbuße reduziert wird...

Verfolgt man die internationale Wirtschaftspresse im ersten Quartal des Jahres 2000, rund zweieinhalb Jahre nach dem Ausbruch der Finanzkrise in neun aufstrebenden Ländern Südostasiens, so häufen sich die Schalmeienklänge über eine rasche Erholung dieser Länder und über die Rückkehr des...