In this paper, I show that the existence of non-bank financial institutions (NBFIs) has implications for the optimal regulation of the traditional banking sector. I develop a New Keynesian DSGE model for the euro area featuring a heterogeneous financial sector allowing for potential credit...

We provide a microfounded framework for the welfare analysis of macroprudential policy within a model of rational bubbles. For this we posit an overlapping generation model where productivity and credit supply are subject to random shocks. We find that when real interest rates are lower than the...

After the 2008 Financial Meltdown the need to reconsider the separation between commercial banking and other financial risky activities - ring fencing - in order to mitigate systemic risks and to address the too big to fail problems was publicly recognized both in the United States and in...

We develop a model in which a financial intermediary's investment in risky assets - risk taking - is excessive due to limited liability and deposit insurance, and characterize the policy tools that implement efficient risk taking. In the calibrated model, coordinating interest rate policy with...

We provide a micro-based rationale for macroprudential capital regulation by developing a model in which bankers can privately undertake a costly effort and reduce the probability of adverse shocks to their asset holdings that force liquidation (deterioration risk). Low fundamental risk of...

The growing concern about the financial system stability has turned macroprudential policy into a key instrument of the policy mix. Through a two-country model for a monetary union, I evaluate the optimal combinations of macroprudential and fiscal policy, both in terms of welfare maximization...

This paper studies the extent to which biased policy preferences, motivated by narrow institutional mandates, affect the gains from coordination between monetary policy(which may respond to financial imbalances) and macroprudential regulation (in the form of capital requirements) in responding...

This paper studies the welfare properties of competitive equilibria in an economy with incomplete markets subject to idiosyncratic and aggregate shocks. We focus on the role of securitization, whereby borrowers can reduce idiosyncratic asset risk, which enables increased leverage and investment....

In standard Walrasian macro-finance models, pecuniary externalities such as fire sales lead to overinvestment in illiquid assets or underprovision of liquidity. We investigate whether imperfect competition (Cournot) improves welfare through internalizing the externality and find that this is far...

We provide a new rationale for macroprudential capital regulation by developing a model where banks can privately undertake a costly effort and reduce the probability of adverse shocks to their asset holdings and liquidation (deterioration risk). Low fundamental risk guarantees benevolent...