positions that require small reallocations. In such circumstances, welfare can increase if the government steps in, purchases private assets on its own account, and resells them when the economy recovers.

We consider a decentralized market for an asset (or durable good) where the valuations of the agents in the market are heterogeneous and drawn from a continuous distribution. Agents can hold either zero or one unit of the asset, and they choose whether or not to search for a trading partner,...

A large body of empirical work documents that specialized asset markets (e.g. stocks, bonds, derivatives) seem to be segmented: local asset prices are driven in part by local factors such as local demand or local changes in idiosyncratic risk. The goal of this paper is to study the aggregate...

from the National Income and Product Accounts to evaluate the quantitative success of the model relative to a single-good benchmark.

when investors’ ability to monitor the market improves, the ratio of messages (order submission and cancelations) to volume increases, consistent with recent evidence on the impact of computerization and algorithmic trading.

We study the dynamics of dealers' inventories during an asset market crash, described as a temporary, negative shock to outside investors' aggregate asset demand. We consider a class of dynamic market settings where trading between dealers and outside investors is subject to delays and requires...

We construct a continuous-time model of incomplete markets where households value both deterministic consumption flows and infrequent and random opportunities of lumpy consumption. Because of lack of commitment and lack of record keeping, households cannot borrow to finance these random...

We study the reaction of nancial markets to aggregate liquidity shocks when traders face cognition limits. While each financial institution recovers from the shock at a random time, the trader representing the institution observes this recovery with a delay, reflecting the time it takes to...

This paper develops a search and matching model of an over-the-counter market for credit derivatives. In equilibrium, the large volume of bilateral trade creates a network of credit exposures in which banks are linked together by a complex liability structure, with gross credit exposures that...

We study the reaction of nancial markets to aggregate liquidity shocks when traders face cognition limits. While each nancial institution recovers from the shock at a random time, the trader representing the institution observes this recovery with a delay, re ecting the time it takes to collect...