Markets coordinate the flow of information in the economy, aggregating it through the price mechanism. We develop a dynamic model of information transmission and aggregation in financial and other social networks in which continued membership in the network is contingent on the accuracy of...

The dynamics of the financial system and the undercurrents of its vulnerabilities rest on the flow of funding. Analysts typically represent these dynamics as a network with banks and financial entities as the nodes and the funding links as the edges. This paper focuses instead on the funding...

Stress testing, which has its roots in risk management, should be adapted to support financial stability monitoring and to incorporate the interconnections and dynamics of the financial system. Since the 2008 financial crisis, bank supervisors have honed their financial stability monitoring...

All flows of secured funding in the financial system are met by flows of collateral in the opposite direction. A network depicting secured funding flows thus implicitly reveals a network of collateral flows. Collateral can also be presented as its own network to show collateral arrangements with...

Financial crises are often characterized by sharp reductions in liquidity followed by cascades of falling prices. Researchers are making progress in work to understand the levels of liquidity on a daily basis, but understanding the vulnerability of liquidity to market shocks remains a challenge....

During liquidity shocks such as occur when margin calls force the liquidation of leveraged positions, there is a widening disparity between the reaction speed of the liquidity demanders and the liquidity providers. Those who are forced to sell typically must take action within the span of a day,...

Existing models of financial instability tend to be based on top-down, partial-equilibrium views of markets and their interactions; they are unable to incorporate the complexity of behavior among heterogeneous firms or the tendency for all types of firms to change their behavior during a crisis....

The current methods used to assess market and portfolio risk extend back to the early 1990s. These methods were developed for banks and broker/dealers and then were adopted by the portfolio management and hedge fund community. This audience focuses on short-term risk, which is measured in days...