1. A critique of the literature on the US financial debt crisis
- Author
-
Stein, Jerome L.
- Subjects
optimal dynamic risk management ,Finanzmarktkrise ,mortgage and financial crises ,D92 ,Risikomanagement ,Stochastischer Prozess ,ddc:330 ,D91 ,Kritik ,G10 ,G11 ,G12 ,Ito equation ,optimal leverage and debt ratios ,USA ,warning signals of crisis ,Immobilienpreis ,Case-Shiller index ,G14 ,Congressional Oversight Panel ,Empirische Methode ,Kontrolltheorie ,Wirtschaftsindikator ,Subprime-Hypothek ,D81 ,C61 ,Schulden ,stochastic optimal control ,Kapitalstruktur - Abstract
A healthy financial system encourages the efficient allocation of capital and risk. The collapse of the house price bubble led to the financial crisis that started in 2007. There is a large empirical literature concerning the relation between asset price bubbles and financial crises. I evaluate the key studies with the respect to the following questions. To what extent do the empirical relations in the existing literature help to identify asset price bubbles ex-ante or ex-post? Do the empirical studies have theoretical foundations? On the basis of that critique, I explain why the application of stochastic optimal control (SOC)/dynamic risk management is a much more effective approach to determine the optimal degree of leverage, the optimum and excessive risk and the probability of a debt crisis. The theoretically founded early warning signals of a crisis are shown to be superior, in general, to those empirical relations in the literature. Moreover the SOC analysis provides a theoretical explanation of the extent that the empirical measures in the literature can be useful.
- Published
- 2010