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...

We analyze how the inflow of liquidity through TARP funds in the wake of the 2007/2008 financial crisis impacted banks' interbank market activity. We show that TARP banks increased interbank market activity statistically and economically in a very significant way. Their interbank lending...

The contagion potential of mark-to-market accounting rules interacting with regulatory constraints is compared to that of funding constraints in a network of banks. The fair value accounting rules were amended at the height of the crisis to break the vicious link between allegedly irrational...

This study investigates an early warning indicator for liquidity shortages in the short-term interbank market. To identify structural breaks and their persistence, an autoregressive two-state regime switching model is presented. The variability in the LIBOR-OIS spread along with thresholds,...

We analyze how the Lehman and sovereign crises affect cross-border interbank liquidity, exploiting euro-area proprietary interbank data, crisis and monetary shocks, and loan terms to the same borrower during the same day by domestic versus foreign lenders. Crisis shocks reduce the supply of...

We propose an algorithm to model contagion in the interbank market via what we term the credit quality channel. In existing models on contagion via interbank credit, external shocks to banks often spread to other banks only in case of a default. In contrast, shocks are transmitted via asset...

We study the liquidity allocation among European banks around the Lehman insolvency using a novel dataset of all interbank loans settled via the Eurosystem's payment system TARGET2. Following the Lehman insolvency, lenders in the overnight segment become sensitive to counterparty characteristics...

In this paper we present a methodology of model-based calibration of additional capital needed in an interconnected financial system to minimize potential contagion losses. Building on ideas from combinatorial optimization tailored to controlling contagion in case of complete information about...

We examine the system-wide effects of liquidity regulation on banks’ balance sheets. In the general equilibrium model, banks have to hold liquid assets, and choose among illiquid assets varying in the extent to which they are difficult to value before maturity, e.g., structured securities. By...

We develop and present a new methodology to detect regime changes within a sequence of sparse networks that have overlapping and evolving community structure. The core of the methodology is a non-negative matrix factorization that maximizes a Poisson likelihood subject to a penalty that accounts...