Are Oligarchs Productive? Theory and Evidence

This paper develops a partial equilibrium model to account for stylized facts about the behavior of oligarchs, politically and economically strong conglomerates in transition and developing countries. The model predicts that oligarchs are more likely than other owners to invest in productivity enhancing projects and to vertically integrate firms to capture the gains from possible synergies and, thus, oligarchs can be socially beneficial. Using a unique dataset comprising almost 2,000 Ukrainian open joint stock companies, the paper tests empirical implications of the model. In contrast to commonly held views, econometric results suggest that, after controlling for endogeneity of ownership, oligarchs tend to improve the performance of the firms they own relative to other firms.Oligarch, transition, firm performance, property rights, treatment effect

Nonextensive statistical features of the Polish stock market fluctuations

The statistics of return distributions on various time scales constitutes one of the most informative characteristics of the financial dynamics. Here we present a systematic study of such characteristics for the Polish stock market index WIG20 over the period 04.01.1999 - 31.10.2005 for the time lags ranging from one minute up to one hour. This market is commonly classified as emerging. Still on the shortest time scales studied we find that the tails of the return distributions are consistent with the inverse cubic power-law, as identified previously for majority of the mature markets. Within the time scales studied a quick and considerable departure from this law towards a Gaussian can however be traced. Interestingly, all the forms of the distributions observed can be comprised by the single $q$-Gaussians which provide a satisfactory and at the same time compact representation of the distribution of return fluctuations over all magnitudes of their variation. The corresponding nonextensivity parameter $q$ is found to systematically decrease when increasing the time scales.Comment: 14 pages. Physica A in prin

Are Oligarchs Productive? Theory and Evidence

This paper develops a partial equilibrium model to account for stylized facts about the behavior of oligarchs, politically and economically strong conglomerates in transition and developing countries. The model predicts that oligarchs are more likely than other owners to invest in productivity enhancing projects and to vertically integrate firms to capture the gains from possible synergies and, thus, oligarchs can be productive. Using a unique dataset comprising almost 2,000 Ukrainian open joint stock companies, the paper tests empirical implications of the model. In contrast to commonly held views, econometric results suggest that, after controlling for endogeneity of ownership, oligarchs can improve the performance of the firms they own relative to other firms.treatment effect, oligarch, transition, firm performance, property rights

Hysteresis and economics - taking the economic past into account

The goal of this article is to discuss the rationale underlying the application of hysteresis to economic models. In particular, we explain why many aspects of real economic systems are hysteretic is plausible. The aim is to be explicit about the difficulties encountered when trying to incorporate hysteretic effects into models that can be validated and then used as possible tools for macroeconomic control. The growing appreciation of the ways that memory effects influence the functioning of economic systems is a significant advance in economic thought and, by removing distortions that result from oversimplifying specifications of input-output relations in economics, has the potential to narrow the gap between economic modeling and economic reality

The Complexities of Financial Risk Management and Systemic Risks

Risk-management systems in financial institutions have come under increasing scrutiny in light of the current financial crisis, resulting in calls for improvements and an increased role for regulators. Yet such objectives miss the intricacy at the heart of the risk-management process. This article outlines the complexity inherent in any modern risk-management system, which arises because there are shortcuts in the theoretical models that risk managers need to be aware of, as well as the difficulties in sensible calibration of model parameters. The author suggests that prudential regulation of such systems should focus on failures within the financial firm and in the market interactions between firms and reviews possible strategies that can improve the performance of risk management and microprudential regulatory practice.

Stylized facts of intraday precious metals

This paper examines the stylized facts, correlation and interaction between volatility and returns at the 5-minute frequency for gold, silver, platinum and palladium from May 2000 to April 2015. We study the full sample period, as well as three subsamples to determine how high-frequency data of precious metals have developed over time. We find that over the full sample, the number of trades has increased substantially over time for each precious metal, while the bid-ask spread has narrowed over time, indicating an increase in liquidity and price efficiency. We also find strong evidence of periodicity in returns, volatility, volume and bid- ask spread. Returns and volume both experience strong intraday periodicity linked to the opening and closing of major markets around the world while the bid-ask spread is at its low- est when European markets are open. We also show a bilateral Granger causality between returns and volatility of each precious metal, which holds for the vast majority subsamples

A Model of Exchange-Rate-Based Stabilization for Turkey

The literature on the exchange-rate-based stabilization has focused almost exclusively in Latin America. Many other countries however, such as Egypt, Lebanon and Turkey; have undertaken this sort of programs in the last 10-15 years. I depart from the existing literature by developing a model specifically for the 2000-2001 heterodox exchange-rate-based stabilization program in Turkey: When the government lowers the rate of crawl, the rate of domestic credit creation is set equal to the lower rate of crawl, bond sales finance the fiscal deficit, and money growth occurs only through capital inflows. Without appealing to high intertemporal elasticity of substitution, the model does very well at replicating the magnitude of the current account deficit (5.5% of GDP predicted vs. 5% of GNP actual), the peak in total consumption spending (10.08% predicted vs. 9.6% actual), average growth rate in total consumption spending (6.7% predicted vs. 6% actual), the peak in durables spending (37.06% predicted vs. 39.5% actual), and the average growth rate in durables spending (24% predicted vs. 27.4% actual) observed in Turkey following the inception of the program.inflation, exchange-rate-based stabilization, durables