Intraday Value at Risk (IVaR) using tick-by-tick data with application to the Toronto Stock Exchange

This paper investigates the use of tick-by-tick data for intraday market risk measurement. We propose a method to compute an Intraday Value at Risk based on irregularly spaced high-frequency data and an intraday Monte Carlo simulation. A log-ACD–ARMA–EGARCH model is used to specify the joint density of the marked point process of durations and high-frequency returns. We apply our methodology to transaction data for three stocks actively traded on the Toronto Stock Exchange. Compared to traditional techniques applied to intraday data, our methodology has two main advantages. First, our risk measure has a higher informational content as it takes into account all observations. On the total risk measure, our method allows for distinguishing the effect of random trade durations from the effect of random returns, and for analyzing the interaction between these factors. Thus, we find that the information contained in the time between transactions is relevant to risk analysis, which is consistent with predictions from asymmetric-information models in the market microstructure literature. Second, once the model has been estimated, the IVaR can be computed by any trader for any time horizon based on the same information and with no need of sampling the data and estimating the model again when the horizon changes. Backtesting results show that our approach constitutes reliable means of measuring intraday risk for traders who are very active in the market.     

Fiscal and monetary policy co-ordination: A differential game approach

In this paper the interaction between the Treasury and the central bank is examined in the case of both cooperative and non-cooperative behaviour. Differential games are used in the framework of a continuous-time econometric model of the Italian economy. The Nash and the Stackelberg non-cooperative equilibrium solutions are computed, and the case for cooperation is analysed by considering the Nash and the Kalai-Smorodinsky bargaining models. It is shown that, in the Italian case, the government has a stronger bargaining position than the central bank. A comparison is then made between the different solutions to show that the drawbacks that emerge from non-cooperation are not simply those depending on the players' payoffs. Other features are in fact considered which constitute a further argument for policy co-ordination.     

New business formation and employment growth: some evidence for the Spanish manufacturing industry

This paper explores the effects of new business formation on employment growth in Spanish manufacturing industries. New firms are believed to make an important contribution to economic growth but the extent of this contribution is unclear. We consider time lags of new firm formation as explanatory variables of employment change and identify how long the effect of new firm entries on employment lasts. Our main results show that the effects of new business formation are positive in the short term, negative in the medium term and positive in the long term, thus confirming the existence of indirect supply-side effects found in similar studies for other countries.

The external wealth of nations mark II: Revised and extended estimates of foreign assets and liabilities, 1970-2004

We construct estimates of external assets and liabilities for 145 countries for 1970-2004. We describe our estimation methods and key features of the data at the country and global level. We focus on trends in net and gross external positions, and the composition of international portfolios. We document the increasing importance of equity financing and the improvement in the external position for emerging markets, and the differing pace of financial integration between advanced and developing economies. We also show the existence of a global discrepancy between estimated foreign assets and liabilities, and identify the asset categories accounting for this discrepancy.     

Environmental Management Accounting: A Case Study Research on Innovative Strategy

The aim of this paper is to conduct an in-depth study on environmental management systems developed in the ceramic tiles sector. This study is conceived as an improvement on a previous survey related to an environmental diagnosis of the ceramic tiles sector where some incongruities between environmental explicit speeches and environmental actions were detected. Such incongruities revealed that firms assumed to be highly environmental committed while from facts this commitment was not so high proved. So, it was necessary to introduce case study research methodology to clarify and to understand the reasons of these inconsistencies. The main objectives of our case study research are two. The first one consists in determining the relationship between firms and environment, analysing environmental positions in companies assumed in their environmental strategy and their environmental behaviour reflected in facts, while the second one attempts to establish the role played by the accounting information system in the environmental management systems of the companies in the sector. Our case study research reveals the elaboration of a larger amount of environmental accounting information for internal use than for external one. This fact is due not only to the inexistence of regulations about environmental disclosures in Spain, at that time, but also to the importance of environmental internal accounting information for management which supports the prevalence of decision-usefulness theory in the implementation of environmental management systems.Lecturer of Management Accounting in the Department of Finance and Accounting of the University Jaume I of Castellon (Spain). PhD in Business Management, with a focus on Environmental Management Accounting. Participant in several research funding programmes related to Environmental Management in Spain, Scotland and Guatemala.     

Participating in Business-to-Business Trade Fairs: Does the Buying Function Matter?

This research aims at understanding the main reasons for business-to-business trade fair participation and for visitors' interaction with suppliers. The nature of the study is exploratory and combines qualitative interviews with trade fair organizers, experts, and trade fair participants, and a survey administered to visitors of an international trade fair held in Portugal. The study revealed that visitors do not highlight buying at these events and the most experienced visitors are the ones who devalue most buying at trade fairs. Interestingly, even when considering the most important supplier with whom visitors have interacted, they do not underline using the trade fair context to place orders. Such conclusion allows drawing managerial implications for trade fair participants and organizers.