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...

I analyze the rapidly growing literature about systemic risk in financial markets and find an important commonality. Systemic risk is regarded to be an endogenous outcome of interactions by rational agents on imperfect markets. Market imperfections give rise to systemic externalities which cause...

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 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...

Despite the so-called “Crypto Winter” in the spring of 2022, which saw a deep plunge in global crypto markets, interest in the appropriate way to develop, use, and regulate cryptoassets and crypto-based businesses continues to be high. In the U.S., a Presidential Executive Order and multiple...

The investment fund sector, the largest component of the non-bank financial system, is growing rapidly and the economy is becoming more reliant on investment fund financial intermediation. This paper builds a dynamic stochastic general equilibrium model with banks and investment funds. Banks...

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...