Showing 1 - 10 of 184
We review heterogeneous agent-based models of financial stability and their application in stress tests. In contrast to the mainstream approach, which relies heavily on the rational expectations assumption and focuses on situations where it is possible to compute an equilibrium, this approach...
Persistent link: https://www.econbiz.de/10011906282
We present a simple agent-based model of a financial system composed of leveraged investors such as banks that invest in stocks and manage their risk using a Value-at-Risk constraint, based on historical observations of asset prices. The Value-at-Risk constraint implies that when perceived risk...
Persistent link: https://www.econbiz.de/10013050585
We present a simple agent-based model of a financial system composed of leveraged investors such as banks that invest in stocks and manage their risk using a Value-at-Risk constraint, based on historical observations of asset prices. The Value-at-Risk constraint implies that when perceived risk...
Persistent link: https://www.econbiz.de/10010888109
We consider a model of contagion in financial networks recently introduced in the literature, and we characterize the effect of a few features empirically observed in real networks on the stability of the system. Notably, we consider the effect of heterogeneous degree distributions,...
Persistent link: https://www.econbiz.de/10013120776
Common asset holdings are widely believed to have been the primary vector of contagion in the recent financial crisis. We develop a network approach to the amplification of financial contagion due to the combination of overlapping portfolios and leverage, and we show how it can be understood in...
Persistent link: https://www.econbiz.de/10013097955
This financial resilience survey was circulated on behalf of a working group of the Complexity Council of the World Economic Forum comprised of Prof. Eve Mitleton-Kelly of London School of Economics and Prof. Dirk Helbing at ETH Zurich's Risk Center. It was sent to a few dozens of financial...
Persistent link: https://www.econbiz.de/10013052613
We consider a model of contagion in financial networks recently introduced in the literature, and we characterize the effect of a few features empirically observed in real networks on the stability of the system. Notably, we consider the effect of heterogeneous degree distributions,...
Persistent link: https://www.econbiz.de/10009295116
In spite of the growing theoretical literature on cascades of failures in interbank lending networks, empirical results seem to suggest that networks of direct exposures are not the major channel of financial contagion. In this paper we show that networks of interbank exposures can however...
Persistent link: https://www.econbiz.de/10010667729
The practice of valuation by marking-to-market with current trading prices is seriously flawed. Under leverage the problem is particularly dramatic: due to the concave form of market impact, selling always initially causes the expected leverage to increase. There is a critical leverage above...
Persistent link: https://www.econbiz.de/10010600059
Common asset holdings are widely believed to have been the primary vector of contagion in the recent financial crisis. We develop a network approach to the amplification of financial contagion due to the combination of overlapping portfolios and leverage, and we show how it can be understood in...
Persistent link: https://www.econbiz.de/10010600136