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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Control of interbank contagion under partial information
Control of interbank contagion under partial informationAdd to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact Mustapha Amrani. Systemic Risk: Mathematical Modelling and Interdisciplinary Approaches Co-authors: Hamed Amini (EPFL), Agnes Sulem (INRIA) We consider a stylized core-periphery financial network in which links lead to the creation of projects in the outside economy but make banks prone to contagion risk. The controller seeks to maximize, under budget constraints, the value of the financial system defined as the total amount of external projects. Under partial information on interbank links, revealed in conjunction with the spread of contagion, the optimal control problem is shown to become a Markov decision problem. We find the optimal intervention policy using dynamic programming. Our numerical results show that the value of the system depends on the connectivity in a non-monotonous way: it first increases with connectivity and then decreases with connectivity. The maximum value attained depends critically on the budget of the controller and the availability of an adapted intervention strategy. Moreover, we show that for highly connected systems, it is optimal to increase the rate of intervention in the peripheral banks rather than in core banks. This talk is part of the Isaac Newton Institute Seminar Series series. This talk is included in these lists:
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