Short sellers are routinely blamed for destabilizing stock markets by exacerbating deviations from fundamental values. In response, regulators periodically impose short sale constraints aimed at preventing excessive stock market declines. One explanation is that policy makers regard short...

L’évaluation du prix des actifs est un problème récurrent en économie. Cette question se pose dans le domaine de l’immobilier comme dans d’autres domaines. Après une très forte phase de croissance, le marché immobilier américain a été touché à partir du mois de juin 2007 par...

This paper aims at testing for time-variations in herd behavior in stock markets. In particular, we analyze how investors’ behavior differs between times of market turmoil and tranquil trading periods. Thereby, we take into account herding within a certain market as well as international...

This paper studies a dynamic network economy, where risk averse traders trade multi-laterally over the counter but cannot commit to fulfil their short positions. We show that, although the level of trade is below the first-best, bilateral clearing with collateral can provide an allocation...

We propose a model to account for two stylized facts about sovereign yields in the Euro Area: their convergence after 2000 and subsequent divergence after 2008, and the contagion among yields of the Euro periphery after the financial crisis of 2007-2008.Two borrowing countries share a bailout...

The association between economic and financial stabilities and influence of macroeconomic policies on the financial sector creates scope of active policy role in financial stability. As a contribution to the existing body of knowledge, this study has analysed the implications of macroeconomic...

Over-the-counter (OTC) traders cannot pursue the two fundamental objectives of portfolio management, the identification of portfolio market risk and return and its diversification. The result of this major market shortcoming is a complex, systemically risky market disequilibrium. The tradable...

I present a model of fire sales incorporating multiple investors with overlapping asset holdings and heterogeneous leverage constraints. Negative price shocks force asset sales which in turn depress prices, triggering additional forced selling and price declines in a self-reinforcing negative...

This study applies a novel way of measuring, quantifying and modelling the systemic risk within the financial system. The magnitude of risk spill over effects is gauged by introducing a specific weighting scheme. This approach originally stems from spatial econometrics. The methodology allows...