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This paper investigates how interbank credit exposures affect financial stability. Policy makers often see such exposures as undermining stability by exacerbating cascading losses through the financial system. I develop a model that features a trade-off between cascading losses and risk-sharing....
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thoroughly studied in the economic literature, a mathematical martingale theory of bubbles, based on an absence of arbitrage has … construct a flow in the space of equivalent martingale measures and we study the shifting perception of the fundamental value of … martingale measure used for pricing. In this way we are able to unify the classical martingale theory of bubbles with a …
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