In this paper I assess the resilience of different network topologies to an exogenous shock for varying degrees of financial integration, as defined by connectivity. Three different network configurations for the financial system are taken into consideration: random graphs, small world networks...

In this paper we analyze the network structure that endogenously emerges in the credit market of the agent-based model of Riccetti et al. (2011), where two kinds of financial accelerator are at work: the 'leverage accelerator' and the 'network-based accelerator'. We focus on the properties of...

The purpose of this study is to assess the resilience of financial systems to exogenous shocks using techniques drawn from the theory of complex networks. We investigate by means of Monte Carlo simulations the fragility of several network topologies using a simple default model of contagion...

We develop a structural default model for interconnected financial institutions in a probabilistic framework. For all possible network structures we characterize the joint default distribution of the system using Bayesian network methodologies. Particular emphasis is given to the treatment and...

We develop a Bayesian methodology for systemic risk assessment in financial networks such as the interbank market. Nodes represent participants in the network and weighted directed edges represent liabilities. Often, for every participant, only the total liabilities and total assets within this...

We study the interplay between two channels of interconnectedness in the banking system. The first one is a direct interconnectedness, via a network of interbank loans, banks' loans to other corporate and retail clients, and securities holdings. The second channel is an indirect...

We propose an agent-based model that explores the dynamics of a collective-social risk dilemma, within the framework of a simplified shallow lake model (Scheffer 1998). The agents are endowed with realistic cognitive abilities, building on the Agent Zero framework (Epstein, 2014). Deliberative,...

Game theory, as originally envisioned, is a tool to theorize about social interaction. As game theory became geared towards prediction and control, branching into mechanism and market design theory, its mathematical sophistication focused on solution spaces and, ultimately, the attainment of...

This paper studies how systemic risk can appear when rational agents establish derivative contracts in a fixed network. Agents are endowed with risks. They optimize their situation by designing and trading derivative contracts. Those deals spread the risks throughout the network and harmonize...