Financial Market Imperfections and Business Cycles

This paper develops a simple model of macroeconomic behavior which incorporates the impact of financial market "imperfections," such as those generated by asymmetric information in financial markets. These information asymmetries may lead to breakdowns in markets, like that for equity, in which risks arm shared. In particular, we analyze firm behavior in the presence of equity rationing and imperfect futures markets, in which there are lags in production. Aft a consequence, firms act in a risk-averse manner. We trace out the macroeconomic consequences, and show that they are able to account for many of the widely observed aspects of actual business cycles.

Time-Varying Uncertainty and the Credit Channel

We extend the Carlstrom and Fuerst (1997) agency cost model of business cycles by including time varying uncertainty in the technology shocks that affect capital production. We first demonstrate that standard linearization methods can be used to solve the model yet second moment effects still influence equilibrium characteristics. The effects of the persistence of uncertainty are then analyzed. Our primary findings fall into four categories. First, it is demonstrated that uncertainty affects the level of the steady-state of the economy so that welfare analyses of uncertainty that focus entirely on the variability of output(or consumption) will understate the true costs of uncertainty. A second key result is that time varying uncertainty results in countercyclical bankruptcy rates - a finding which is consistent with the data and opposite the result in Carlstrom and Fuerst. Third, we show that persistence of uncertainty affects both quantitatively and qualitatively the behavior of the economy. Finally, we demonstrate that the magnitude of changes in uncertainty affecting the economy could be quite large; the implicationagency costs, credit channel, time-varying uncertainty

Financial Fragility, Liquidity and Asset Prices

A financial system is fragile if a small shock has a large effect. Sunspot equilibria, where the endogenous variables depend on extrinsic uncertainty, provide an extreme illustration. However, fundamental equilibria, where outcomes depend only on intrinsic uncertainty, can also be fragile. We study the relationship between sunspot equilibria and fundamental equilibria in a model of financial crises. The amount of liquidity is endogenously chosen and determines asset prices. The model has multiple equilibria, but only some of these are the limit of fundamental equilibria when the fundamental uncertainty becomes vanishingly small. We show that under certain conditions the only robust equilibria are those in which extrinsic uncertainty gives rise to asset price volatility and Þnancial crises.

A look at the relationship between industrial dynamics and aggregate fluctuations

The firmly established evidence of right-skewness of the firms’ size distribution is generally modelled recurring to some variant of the Gibrat’s Law of Proportional Effects. In spite of its empirical success, this approach has been harshly criticized on a theoretical ground due to its lack of economic contents and its unpleasant long-run implications. In this chapter we show that a right-skewed firms’ size distribution, with its upper tail scaling down as a power law, arises naturally from a simple choice-theoretic model based on financial market imperfections and a wage setting relationship. Our results rest on a multi-agent generalization of the prey-predator model, firstly introduced into economics by Richard Goodwin forty years ago.Firm size; Prey-predator model; Business Fluctuations

Hedging and Financial Fragility in Fixed Exchange Rate Regimes

Currency crises that coincide with banking crises tend to share four elements. First, governments provide guarantees to domestic and foreign bank creditors. Second, banks do not hedge their exchange rate risk. Third, there is a lending boom before the crises. Finally, when the currency/banking collapse occurs, interest rates rise and there is a persistent decline in output. This paper proposes an explanation for these regularities. We show that government guarantees lower interest rates and generate an economic boom. They also lead to a more fragile banking system; banks choose not to hedge exchange rate risk. When the fixed exchange rate is abandoned in favor of a crawling peg, banks go bankrupt, the domestic interest rate rises, real wages fall, and output declines.

Quantitative macroeconomics with heterogeneous households

Macroeconomics is evolving from the study of aggregate dynamics to the study of the dynamics of the entire equilibrium distribution of allocations across individual economic actors. This article reviews the quantitative macroeconomic literature that focuses on household heterogeneity, with a special emphasis on the “standard” incomplete markets model. We organize the vast literature according to three themes that are central to understanding how inequality matters for macroeconomics. First, what are the most important sources of individual risk and cross-sectional heterogeneity? Second, what are individuals’ key channels of insurance? Third, how does idiosyncratic risk interact with aggregate risk?Macroeconomics ; Insurance

Hedging and financial fragility in fixed exchange rate regimes

Currency crises that coincide with banking crises tend to share four elements. First, governments provide guarantees to domestic and foreign bank creditors. Second, banks do not hedge their exchange rate risk. Third, there is a lending boom before the crises. Finally, when the currency/banking collapse occurs interest rates rise and there is a persistent decline in output. This paper proposes an explanation for these regularities. We show that government guarantees lower interest rates, and generate an economic boom. But they also lead to a more fragile banking system: banks choose not to hedge exchange rate risk. When the fixed exchange rate is abandoned in favor of a crawling peg banks go bankrupt, the domestic interest rate rises, real wages fall and output declines.Foreign exchange rates ; Hedging (Finance) ; Interest rates

Risky College Investment under Alternative Bankruptcy Regimes for Student Loans

I consider the implications of alternative bankruptcy regimes for student loans ina heterogeneous model of life-cycle earnings and risky human capital accumulation. Findings suggest that the ability level of high-school graduates drives the decision to enroll in college, while the initial human capital level is crucial for completing college. Also, the correlation between parental wealth and ability and human capital stock is key in delivering enrollment and completion rates across income groups consistent with empirical findings. The model delivers higher college enrollment, dropout, and default rates when loans can be discharged. Under liquidation, financially constrained borrowers choose to default, whereas under reorganization borrowers default for other reasons rather than financial constraints. Dischargeability benefits college dropouts and students with low assets. It induces more human capital accumulation over the life-cycle relative to the reorganization regime.Bankruptcy, Student loans, College Risk

Consumer bankruptcy: a fresh start

American consumer bankruptcy provides for a Fresh Start through the discharge of a household’s debt. Until recently, many European countries specified a No Fresh Start policy of life-long liability for debt. The trade-off between these two policies is that while Fresh Start provides insurance across states, it drives up interest rates and thereby makes life-cycle smoothing more difficult. This paper quantitatively compares these bankruptcy rules using a life-cycle model with incomplete markets calibrated to the U.S. and Germany. A key innovation is that households face idiosyncratic uncertainty about their net asset holdings (expense shocks) and labor income. We find that expense uncertainty plays a key role in evaluating consumer bankruptcy laws.