Three Essays in Macroeconomics

Three Essays in Macroeconomics
Author: Chacko George
Publisher:
Total Pages: 276
Release: 2014
Genre:
ISBN:

This dissertation consists of three essays on topics in macroeconomics. In the first chapter, I construct a macroeconomic model with a heterogeneous banking sector and an interbank lending market. Banks differ in their ability to transform deposits from households into loans to firms. Bank size differences emerge endogenously in the model, and in steady state, the induced bank size distribution matches two stylized facts in the data: bigger banks borrow more on the interbank lending market than smaller banks, and bigger banks are more leveraged than smaller banks. I use the model to evaluate the impact of increasing concentration in US banking on the severity of potential downturns. I find that if the banking sector in 2007 was only as concentrated as it was in 1992, GDP during the Great Recession would have declined by 40% less it did, and would have recovered twice as fast. In the second chapter, my co-author and I investigate the impact of firm capacity constraints on aggregate production and productivity when the economy is driven by aggregate and idiosyncratic demand shocks. We are motivated by three observed regularities in US GDP: business cycles are asymmetric, in that large absolute changes in output are more likely to be negative than positive; capacity and capital utilization are procyclical, and increase the procyclicality of measured productivity; the dispersion of firm productivity increases in recessions. We devise a model of demand shocks and endogenous capacity constraints that is qualitatively consistent with these observations. We then calibrate the model to aggregate utilization data using standard Bayesian techniques. Quantitatively, we find that the calibrated model also exhibits significant asymmetry in output, on the order of the regularities observed in GDP. The third chapter explores the role of distance in equilibrium selection. I consider a model economy with multiple steady state equilibria where a high productivity and a low productivity technology are available for use in production. The high productivity technology requires a fixed set up cost for production. Sectors are linked by localized production complementarities. I consider selection under a learning rule in which agents imitate their most successful neighbor. As distance between neighbors decreases, the possible profits from industrialization increase, and the likelihood that the learning rule process converges to a steady state matching the H equilibrium increases. The result suggests that, in the presence of localized technology spillovers, there may be important gains to economic growth from infrastructure development.

Three Essays on Macroeconomics and Banking

Three Essays on Macroeconomics and Banking
Author: Lulei Song
Publisher:
Total Pages: 145
Release: 2018
Genre:
ISBN:

My dissertation covers three loosely connected topics in Macroeconomics and Banking. The first chapter, titled Effect of Failed Bank Mergers During the Crisis on Cost Efficiency, examines the effect of merging with failed banks during the crisis period on the acquiring banks' cost X-efficiency. Between December 31, 2006, and Decem- ber 31, 2010, the number of U.S. commercial banks and savings institutions declined significantly because of failures. The majority of failed banks were acquired by the existing banks. I utilize the Fourier flexible cost function form to estimate the cost X-efficiency, and find out that merging with failed banks does negatively affect the cost X-efficiency of the acquiring bank. Although the local market concentration does not change much after the merger, the decrease in cost X-efficiency may still indicate the increase of market power for acquiring banks. With the evolving technology, the cost of obtaining banking service from distant providers fell a lot compared with 30 or 40 years ago. Local market concentration may no longer be a good measure of market competitiveness, and the FDIC may need to develop other more relevant measures regarding merger regulations. The second chapter, titled Financial Regulation and Stability of the Banking System, builds a dynamic stochastic general equilibrium model which includes both regulated and unregulated banks to study the effect of the capital requirement, which is imposed only on regulated banks, on the stability of the financial system. One of the most distinctive features of the recent financial crisis is the turmoil of the financial market. Financial institutions with high leverage were the first to bear the brunt, and the chain effect caused by their bankruptcy led the economy into a prolonged depression. In order to stabilize the financial market and prevent financial institutions from taking excessive risks, the government imposed capital requirements on the regulated banks. However, a large number of financial institutions, which perform similar functions as regulated banks, are not under government regulation. In this paper, I build a model which includes both regulated banks, referred to as commercial banks, and unregulated banks, referred to as shadow banks, to study and quantify the effects of capital requirements on the stability of the financial system. I find that when the capital requirement is high enough to help commercial banks to survive the bank runs, it does help to alleviate the negative impact of the crisis. However, if the capital requirement is not high enough, increasing capital requirements only causes decreased net output but does not help to stabilize consumption and capital price during the crisis. The third chapter is titled The Effect of Monetary Policy on Asset Price Volatility: Evidence from Time-Varying Parameter Vector Autoregression Approach. The great financial recession in 2007 - 2009 reactivated the discussion of the effect and the focus of monetary policies. Some researchers argue that whether the monetary authority should take action to fight against the asset price bubbles prior to 2007 aside from targeting inflation and GDP gap. However, one important fact that often get ne- glected is that the volatility of the financial market is also closely related to monetary policy shocks, and it has an important impact on economic output and unemployment in the economy. This paper utilizes two empirical methods, constant parameter structural vector auto-regression and time-varying parameter vector auto-regression, to study the relationship between monetary policy and financial market volatility. I find that under these two different methods, the financial market volatility responds differently to the monetary policy shocks.

Three Essays in Macroeconomics and International Finance

Three Essays in Macroeconomics and International Finance
Author: Vania Atanassova Stavrakeva
Publisher:
Total Pages:
Release: 2013
Genre:
ISBN:

The interaction between future binding bank net worth constraints and dynamic (future) underinvestment could lead to ex-ante overinvestment even in economies with a single monopolistic bank where there are no pecuniary externalities. The last third chapter, which is coauthored with Kenneth Rogoff, evaluates a new class of exchange rate forecasting studies, which claim that structural models are getting closer to being able to forecast exchange rates at short horizons. We argue that misinterpretation of some new out-of-sample tests for nested models, over-reliance on asymptotic test statistics, and failure to sufficiently check robustness to alternative time windows have led many studies to overstate even the relatively thin positive results that have been found.