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Working Paper
The Origins of Aggregate Fluctuations in a Credit Network Economy
I show that inter-firm lending plays an important role in business cycle fluctuations. I first build a tractable network model of the economy in which trade in intermediate goods is financed by supplier credit. In the model, a financial shock to one firm affects its ability to make payments to its suppliers. The credit linkages between firms propagate financial shocks, amplifying their aggregate effects by about 30 percent. To calibrate the model, I construct a proxy of inter-industry credit flows from firm- and industry-level data. I then estimate aggregate and idiosyncratic shocks to ...
Working Paper
Financial Frictions and Export Dynamics in Large Devaluations
We study the role of financial frictions and balance-sheet effects in accounting for the dynamics of aggregate exports in large devaluations. We investigate a small open economy with heterogeneous firms and endogenous export decisions in which firms face financing constraints and debt can be denominated in foreign units. Despite the negative impact of these channels on capital accumulation and output at the firm-level, we find that they only explain a modest fraction of the gradual increase of exports observed in these episodes. Exports increase since financially-constrained exporters are ...
Working Paper
Output Gap, Monetary Policy Trade-offs, and Financial Frictions
This paper investigates how the presence of pervasive financial frictions and large financial shocks changes the optimal monetary policy prescriptions and the estimated dynamics in a New Keynesian model. We find that financial factors affect the optimal policy only to some extent. A policy of nominal stabilization (with a particular focus on targeting wage inflation) is still the optimal policy, although the central bank is now unable to fully stabilize economic activity around its potential level. In contrast, the presence of financial frictions and financial shocks crucially changes the ...
Working Paper
Financial Frictions and Macroeconomic Fluctuations in Emerging Economies
Estimated dynamic models of business cycles in emerging markets deliver counterfactual predictions for the country risk premium. In particular, the country interest rate predicted by these models is acyclical or procyclical, whereas it is countercyclical in the data. This paper proposes and estimates a small open economy model of the emerging-market business cycle in which a time-varying country risk premium emerges endogenously. In the proposed model, a firm's borrowing rate adjusts countercyclically as the default threshold of the firm depends on the state of the macroeconomy. I ...
Report
Evolution of Modern Business Cycle Models: Accounting for the Great Recession
Modern business cycle theory focuses on the study of dynamic stochastic general equilibrium models that generate aggregate fluctuations similar to those experienced by actual economies. We discuss how this theory has evolved from its roots in the early real business cycle models of the late 1970s through the turmoil of the Great Recession four decades later. We document the strikingly different pattern of comovements of macro aggregates during the Great Recession compared to other postwar recessions, especially the 1982 recession. We then show how two versions of the latest generation of real ...
Report
Sovereign risk and firm heterogeneity
This paper studies the recessionary effects of sovereign default risk using firm-level data and a model of sovereign debt with firm heterogeneity. Our environment features a two-way feedback loop. Low output decreases the tax revenues of the government and raises the risk that it will default on its debt. The associated increase in sovereign interest rate spreads, in turn, raises the interest rates paid by firms, which further depresses their production. Importantly, these effects are not homogeneous across firms, as interest rate hikes have more severe consequences for firms that are in need ...
Working Paper
U.S. Monetary Policy Spillovers to Emerging Markets: Both Shocks and Vulnerabilities Matter
Using a macroeconomic model, we explore how sources of shocks and vulnerabilities matter for the transmission of U.S. monetary changes to emerging market economies (EMEs). We utilize a calibrated two-country New Keynesian model with financial frictions, partly-dollarized balance sheets, and imperfectly anchored inflation expectations. Contrary to other recent studies that also emphasize the sources of shocks, our approach allows the quantification of effects on real macroeconomic variables as well, in addition to financial spillovers. Moreover, we model the most relevant vulnerabilities ...