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Working Paper
Are Supply Networks Efficiently Resilient?
We show that supply networks are inefficiently, and insufficiently, resilient. Upstream firms can expand their production capacity to hedge againstsupply and demand shocks. But the social benefits of such investments arenot internalized due to market power and market incompleteness. Upstreamfirms under-invest in capacity and resilience, passing-on the costs to downstreamfirms, and drive trade excessively towards the spot markets. There isa wedge between the market solution and a constrained optimal benchmark,which persists even without rare and large shocks. Policies designed to incentivize ...
Working Paper
Monetary Policy under Multiple Financing Constraints
We revisit the credit channel of monetary policy when firms face multiple financing constraints. Our theory shows that the multiplicity of constraints dampens the transmission of expansionary policy to firm borrowing and investment notably but amplifies the transmission of policy tightening. This asymmetry arises because, when policy tightens (eases), the most (least) responsive constraint binds. Using U.S. firm-level data and exploiting a quasi-natural experiment, we find strong support for these predictions. Embedding the mechanism into a New Keynesian framework, we find that the drop in ...
Working Paper
Spread Too Thin: The Impact of Lean Inventories
Widespread adoption of just-in-time (JIT) production has reduced inventory holdings. This paper finds that JIT creates a trade-off between firm profitability and vulnerability to large shocks. Empirically, JIT adopters experience higher sales and less volatility while also exhibiting heightened cyclicality and sensitivity to natural disasters. I explain these facts in a structurally estimated general equilibrium model where firms can adopt JIT. Relative to a no-JIT economy, the estimated model implies a 1.3% increase in firm value. At the same time, an unanticipated shock results in a roughly ...
Working Paper
Investing in the Shadows: FinTech Growth and Mortgage Market Dynamics
The adoption of new technologies is widely viewed as a key driver of the rapid growth of nonbanks in the U.S. mortgage market after the Global Financial Crisis (GFC). This paper studies technology investment by mortgage lenders and its implications for post-GFC market structure. Using a new dataset on lender-level technology investment merged with loan origination records and balance-sheet information, we document that technology-related human capital investment has risen over time, driven disproportionately by banks and larger lenders, and that such investment predicts higher subsequent ...
Working Paper
Incomplete Information and Irreversible Investment
How do information frictions and investment frictions interact? We use a continuous-time model to analytically characterize how incomplete information distorts firms’ decision rules and stationary distribution when investment is irreversible. The two frictions interact in rich and substantial ways. At the firm level, noisier information shrinks a firm’s inaction region and reduces the elasticity of investment to productivity. In the aggregate, incomplete information increases steady-state capital, exacerbates capital misallocation, and mitigates the impact of productivity shocks on ...
Working Paper
Risk-Adjusted Capital Allocation and Misallocation
We develop a theory linking “misallocation,” i.e., dispersion in marginal products of capital (MPK), to macroeconomic risk. Dispersion in MPK depends on (i) heterogeneity in firm-level risk premia and (ii) the price of risk, and thus is countercyclical. We document strong empirical support for these predictions. Stock market-based measures of risk premia imply that risk considerations explain about 30% of observed MPK dispersion among US firms and rationalize a large persistent component in firm-level MPK. Risk-based MPK dispersion, although not prima facie inefficient, lowers long-run ...
Working Paper
Federal Reserve Balance-Sheet Policy in an Ample Reserves Framework: An Inventory Approach
Implementing monetary policy in an ample reserves regime means choosing a level of reserves that balances the cost of reserves against interest rate volatility. I use techniques from stochastic inventory theory to calibrate the size of the buffer needed to keep reserves above the ample level, and find the buffer size to be modest compared to the level of reserves needed to reach the ample level.
Discussion Paper
Market Failures and Official Sector Interventions
In the United States and other free market economies, the official sector typically has minimal involvement in market activities absent a clear rationale to justify intervention, such as a market failure. In this post, we consider arguments for official sector intervention, focusing on the market failure arising from externalities related to business closures. These externalities are likely to be particularly high for closures arising from pandemic-related economic disruptions. We discuss how the official sector, including institutions such as Congress and the Treasury, can increase social ...