Macroprudential policy can comprise a broad range of issues and topics. This is clearly reflected in the second issue of the ECB's Macroprudential Bulletin. The Bulletin starts with the macroprudential effects of the EU-wide bank stress testing exercise. The first chapter of the Bulletin...

Since the financial crisis, the concept of macroprudential policy has progressively gained ground. The aim of macroprudential policy is to increase the resilience of individual financial institutions and of the financial system as a whole. It is also used to smooth out the financial cycle,...

I study economies where banks do not fully internalize the social costs of default, which distorts their lending decisions. In all these economies, a common general equilibrium effect leads to aggregate over-investment. As a result, under laissez-faire, crises are too frequent and too costly...

I develop a model of money market funds (MMFs) to study the ability of sponsor support to provide stability to the industry. I find that strategic complementarities in the sponsors support decisions can make MMFs vulnerable to runs different from the canonical bank-runs: it may lead to runs of...

I study rollover risk in the wholesale funding market when intermediaries can hold liquidity ex-ante and are subject to fire sales ex-post. I demonstrate that precautionary liquidity restores multiple equilibria in a global rollover game. An intermediate liquidity level supports both the usual...

In this paper we examine the quantitative effects of margin regulation on volatility in asset markets. We consider a general equilibrium infinite-horizon economy with heterogeneous agents and collateral constraints. There are two assets in the economy which can be used as collateral for...

We use an extensive data set of bilateral exposures on credit default swap (CDS) to estimate the impact on collateral demand of new margin and clearing practices and regulations. We decompose collateral demand for both customers and dealers into several key components, including the "velocity...

Virtual communities have proliferated in recent years - a phenomenon triggered by technological developments and by the increased use of the internet. In some cases, these communities have created and circulated their own currency for exchanging the goods and services they offer, and thereby...