What drives idiosyncratic volatility over time?

We document the patterns of market-wide and firm-specific volatility in the Portuguese stock market over the 1991–2005 period and test several explanations for the behavior of firm-level idiosyncratic volatility. Unlike previous studies we find no evidence of a statistically significant rise in firm-specific volatility. On the contrary, the ratio of firm-specific risk to total risk slightly decreases. We show that this result stems from new listings of large privatized companies that display lower firm-specific risk. Our findings are consistent with the idea that changes in idiosyncratic volatility are related to changes in the composition of the market.

Transaction tax and stock market behavior: evidence from an emerging market

This study examines the impact of a stamp tax rate increase on market behavior, using data from two stock exchanges in China. We find that when the tax rate increases from 0.3 to 0.5% (which implies that the transaction cost increases by about 1/3) trading volume decreases by 1/3. This implies an elasticity of turnover with respect to a stamp tax of −50% and an elasticity of turnover with respect to transaction cost of −100%. The markets’ volatility significantly increases after the increase in the tax rate. Furthermore, the change in the volatility structure indicates that the markets become less efficient in the sense that shocks are less quickly assimilated in the markets.

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Estimation of Asymmetric Stochastic Volatility Models for Stock-Exchange Index Returns

The objective of this paper is to put forward a new autoregressive asymmetric stochastic volatility model for modeling volatility and to compare results obtained for this model with an autoregressive stochastic model and another asymmetric volatility model, such as, asymmetric generalized autoregressive conditional heteroskedasticity model. The results obtained from the estimation by maximum likelihood have shown the volatility behavior is asymmetric in the majority of cases. This fact is better shown by the ARSVA model, than the rest of alternative models. Moreover, the ARSVA model is able to reproduce other stylized facts of such series, such as high kurtosis, no autocorrelation of returns, slow decreasing of the autocorrelation function of the squared returns and high persistence.

Majority voting with stochastic preferences: The whims of a committee are smaller than the whims of its members

This note studies the volatility of the policy chosen by a committee whose members’ preferences are volatile, due to common and individual preferences shocks. It is shown that majority voting mitigates the latter but not the former. The volatility of the policy is smaller the smaller the volatility of members’ preferences, smaller the larger the size of the committee, and smaller than if it was chosen by a single member. The results hold in a context of uncertainty and with multidimensional issues.

Privatisation and aggregate output: testing for macroeconomic transmission channels

In this paper we examine empirically the impact of privatisation on output in the UK, through macroeconomic transmission channels. While most privatisation studies focus on microeconomic shocks, namely at the firm level, we are interested to see whether a large scale privatisation policy, as the one pursued in the UK in the 1980 and 1990s, had a measurable impact on output. This may contribute to the ex post evaluation of this policy and complement the microeconomic evidence. We use quarterly data from 1979 to 1998 of privatisation proceeds, as our impulse policy variable, and of private consumption, gross fixed capital formation, net government expenditures, as transmission channels, and aggregate output as our final response variable. The econometric methodology is based on Structural Vector Auto-regressive models and Impulse Response Functions. Non-stationarity and cointegration properties of the time series have also been considered. We find that privatisation shocks do not have an impact in the consumption-output model, but have a moderate and transitory impact in the investment and the public expenditures models. Such positive demand effects, however, have not been completely matched by supply side effects, and, consequently, privatisation in the UK did not contribute to a sustained economic growth.

The Social Economics of Neoliberal Globalization

The recent period of intensive and extensive development of global economic integration, or globalization, has reached a crossroads. The regime of the neoliberal Great Capitalist Restoration is not sustainable and fundamental governance changes must be made. This paper adds perspective to the choices that must be made at this critical juncture of the global social economy by applying the master concepts of Schumpeter’s Creative Destruction and Polanyi’s Protective Response.

Order aggressiveness and order book dynamics

In this paper, we study the determinants of order aggressiveness and traders’ order submission strategy in an open limit order book market. Applying an order classification scheme, we model the most aggressive market orders, limit orders as well as cancellations on both sides of the market employing a six-dimensional autoregressive conditional intensity model. Using order book data from the Australian Stock Exchange, we find that market depth, the queued volume, the bid-ask spread, recent volatility, as well as recent changes in both the order flow and the price play an important role in explaining the determinants of order aggressiveness. Overall, our empirical results broadly confirm theoretical predictions on limit order book trading. However, we also find evidence for behavior that can be attributed to particular liquidity and volatility effects.

On the integration of growth and business cycles

This paper discusses several approaches to generating the observed persistence in macro models and presents evidence in favor of models where endogenous technology adoption propagates transitory shocks into the medium term. Prepared for the Conference on “The Interrelation of Cycles and Growth” in honor of Gunther Tichy.

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Exchange rate volatility and the mixture of distribution hypothesis

This study sheds new light on the mixture of distribution hypothesis by means of a study of the weekly exchange rate volatility of the Norwegian krone. In line with other studies we find that the impact of information arrival on exchange rate volatility is positive and statistically significant, and that the hypothesis that an increase in the number of traders reduces exchange rate volatility is not supported. The novelties of our study consist in documenting that the positive impact of information arrival on volatility is relatively stable across three different exchange rate regimes, and in that the impact is relatively similar for both weekly volatility and weekly realised volatility. It is not given that the former should be the case since exchange rate stabilisation was actively pursued by the central bank in parts of the study period. We also report a case in which undesirable residual properties attained within traditional frameworks are easily removed by applying the log-transformation on volatilities.

A spatial econometric analysis of the regional growth and volatility in Europe

Based on a sample of 1,084 European regions (EU15) from 1995 to 2004, we estimate the relationship between the average growth rate of GDP per capita and the volatility of the growth rate allowing for spatial effects. The spatial lag and spatial error models show that the regional per capita growth rate and volatility are significantly positively related on average. However, the inclusion of country interaction terms reveals that the volatility impact is not uniform across countries. In particular, the relationship between growth and volatility is significantly positive for the majority of countries but significantly negative for three countries (namely Finland, Italy, and Ireland).

Export variety and the economic performance of countries

We explore the relationship between export variety and economic development, using data on OECD countries between 1964 and 2003. We show that structural change in the world economy has a particular arrow of time leading to a growing variety of exports. Distinguishing between related variety (within sectors) and unrelated variety (variety between sectors), we also show that related variety stimulates growth instantaneously, while unrelated variety only promotes growth with a considerable time lag. This finding is in line with the evolutionary notions that economic development and international trade patterns are path dependent.

International crises,instability periods and contagion: the case of the ERM

In this article we propose a two step procedure for modeling the propagation of financial shocks. The first step consists in the estimation, by means of SWARCH models, of the conditional probability of being in a period of high volatility, while in the second step such indicators are included in a structural simultaneous equations models for interdependences among different countries. The results show that episodes of financial crisis effectively happened during periods of high volatility and that such measures of instability are important in explaining the propagation of devaluation expectations between six European Countries during the ERM period.

When should regions bid for artistic resources?

Under a variety of assumptions, subsidized bidding for creative resources fails to spur economic growth. First, under many conditions, the resource would find an optimal location in any case. Second, the bid may be good for a winning city's economy, but bad for the arts more generally. The bid winner is not necessarily the most appropriate home for the resource. Third, bids based on publicly available information are unlikely to beat the market price for attracting those resources. The key to stimulating growth, and drawing successful creative resources, is to stimulate the underlying microconditions for entrepreneurship, whether in the private or public sectors. Furthermore, we should make arts subsidies less location-specific.

On good government

Besley’s treatment of principled agents is a major contribution to public choice and political economy. By focusing on politics as an agency problem, he has shown the way to a new generation of research on the interface of politics and economics.

Repositioning the Chinese economy on the global economic stage

A tectonic shift in the global economic prowess became obvious around the turn of the last century. Three decades of macroeconomic reforms, sustained growth and global integration have turned China into a future economic power of global magnitude, with unmatched breadth of resources and a robust manufacturing sector. Significance of the Chinese economy has radically increased and it has traversed from the periphery of the global economy to the core. For all appearances, this progress is likely to continue in the foreseeable future. China has grown to be the fourth largest economy in the world in a short time span and the third largest trader. Events like dawning of an economic superpower occur once in several generations. China is endeavoring to make a new niche for itself in the global economy as well as formulate a new role.

The curious destiny of a heterodoxy: The Austrian economic tradition

The Austrian School has had a curious destiny: while contributing many concepts to contemporary economic theory, it is either ignored or criticised by much of modern economic literature. This article discusses possible reasons for this institutional sidelining and the main futures of a renewal of Austrian thought.

Saving government failure theory from itself: recasting political economy from an Austrian perspective

The economic approach to politics revolutionized the way scholars in economics and political science approached the study of political decision-making by introducing the possibility of government failure. However, the persistent and consistent application of neoclassical models of economics also seemed to suggest that once the full costs were accounted for, this failure was an illusion. This paper counters these arguments, typically associated with George Stigler, Gary Becker and Donald Wittman, by focusing on the underlying economic theory. We develop an alternative model of political economy grounded in the Austrian conception of the dynamic market process.

An econometric analysis of the effects of market liberalization on price dynamics and price volatility

The paper investigates price dynamics under market liberalization, with a focus on the effects of lowering price floors. We analyze price dynamics by specifying and estimating a dynamic Tobit model under time-varying volatility, where the market price is censored by a government-set support price. The model is applied to the U.S. butter market over the last three decades. The econometric results show how the price support program affects both expected prices and the volatility of prices. It is found that the censoring effects of a price support program can be significant and large even if the price support is set relatively low.

Volatility,growth and cycles

The paper investigates the factors affecting the equilibrium level of output in a panel of European countries. Output depends on factor inputs and on the technology and the efficiency with which those factors are used. Efficiency may be driven by international conditions and institutional changes such as the Single Market Programme in Europe. The technology indicators used in this study depend upon research and development and also include the level of labour efficiency which is indexed on skills data. The level of the capital stock depends upon the user cost of capital, which may depend upon risk and hence on the volatility of the economy. Recent literature suggests that real exchange rate volatility is important in determining investment and therefore has an impact on equilibrium output. A link of this form is uncovered for the European economies. If policy can reduce these volatilities then it can also raise equilibrium output.

The role of the financial sector in economic development: the Malaysian case

In this paper, we empirically examine the finance-economic development relations for the case of Malaysia. Using a battery of time series econometric techniques, we document robust evidence suggesting favorable output effects of financial market development. Likewise, there are consistent results showing the adverse real effects of financial volatility. The results of the development of financial intermediaries, however, are fragile. Moreover, the development of the financial markets hinges crucially on macro-economic performance and financial stability of the country. However, the process of financial market development is likely to be accompanied by financial volatility, leaving Malaysia with the trade-off between financial development and financial volatility. Lastly, we obtain limited evidence indicating the complementarity between financial market and banking sector developments.