Asymptotic behaviour of mean-quantile efficient portfolios

In this paper we investigate portfolio optimization in the Black–Scholes continuous-time setting under quantile based risk measures: value at risk, capital at risk and relative value at risk. We show that the optimization results are consistent with Merton’s two-fund separation theorem, i.e., that every optimal strategy is a weighted average of the bond and Merton’s portfolio. We present optimization results for constrained portfolios with respect to these risk measures, showing for instance that under value at risk, in better markets and during longer time horizons, it is optimal to invest less into the risky assets.This research was partially supported by the National Science and Engineering Research Council of Canada, and the Mathematics of Information Technology and Complex Systems (MITACS) Network of Centres of Excellence.     

The costs of moving money across borders and the volume of capital flight: the case of Russia and other CIS countries

We estimate capital flight from seven countries of the Commonwealth of Independent States for the period 1995–2005. In some countries capital flight is large and growing, but other countries, despite similar macroeconomic and political circumstances, have little capital flight. We develop a model of capital flight that incorporates costs of moving money to offshore locations and show that such costs are an important determinant of capital flight. Liberalizing the trade and financial sectors accelerates capital flight by making it easier to move capital abroad. In the short run, greater regulation rather than external sector liberalization appears to have more potential to combat capital flight.     

Intraweek and intraday trade anomalies: evidence from FOREX market

In this article, we search for the evidence of intraweek and intraday anomalies on the spot foreign exchange (FOREX) market. Having in mind the international scope of this market, empirical evidence against market efficiency (i.e. market anomalies) will have important consequences for the substantial number of FOREX investors all around the globe. We explore intraweek, intraday and interaction between days and hour trade anomalies on the FOREX market over the period of 10 years using hourly time-series data of Euro and US Dollar (EUR/USD) exchange rate on Swiss FOREX market from 1 January 2004 to 11 January 2014. We compare by analysis of variance test all pairs of mean returns on a daily, hourly and daily/hourly basis. t-Test is used to test whether intraday returns are significantly different from zero. We employ Tukey’s honestly significant difference test to explore which intraday pairs of hourly mean returns are significantly greater than zero. We find that intraday and interaction between day and hour anomalies are present in trading EUR/USD on the spot FOREX market over the period of 10 years. The best arbitrage opportunity is evidenced on Fridays, when selling USD and buying EUR at 00:00 and selling EUR and buying USD at 03:00 the same day.     

Involvement,Tolerance for Ambiguity,and Type of Service Moderate the Effectiveness of Probability Marker Usage in Service Advertising

Results of two experiments reveal that the use of probability markers in advertisements affects brand attitude and purchase intentions, and that this is moderated by the type of service, customers’ involvement, and their level of tolerance for ambiguity. Services in the study were classified as more or less hedonic/utilitarian, and more or less involving. Probability markers affect consumers’ brand attitude and purchase intentions for less-involving services, while this effect is not significant for more-involving services. In addition, higher tolerance for ambiguity results in preference of hedges over pledges or no probability markers, while for consumers with lower tolerance for ambiguity the opposite holds. With regards to service type, for more-hedonic, less-involving services the use of hedges in advertising copy increases brand attitude and purchase intentions, while for more-utilitarian, less-involving services pledges result in highest levels of brand attitude and purchase intentions.     

Merger Control and Economic Growth of LDCs: Some Observations and Recommendations

The aim of this paper is to evaluate merger control as a segment of competition policy in less developed countries (LDCs) and to propose desirable regimes, using economic growth as the evaluation standard. Three regimes of merger control are recommended, depending on the level of institutional and economic development: for LDCs with low levels of both, the absence of merger control is suitable; for LDCs with intermediate levels of both, very restricted merger control is recommended; this should evolve into somewhat restricted merger control for the remaining LDCs. Advocacy is recommended as the main substitute activity of the national competition authorities.

     

Change Point Analysis based on Empirical Characteristic Functions

Test procedures for detection of a change in the distribution of a sequence of independent observations based on empirical characteristic functions are developed and their limit properties are studied. Theoretical results are accompanied by a simulation study.The work of the first author was partially supported by grants GAČR 201/03/0945 and MSM 113200008     

The Protection of Lithuanian Consumers against Unfair Contract Terms

Lithuania joined the European Union in 2004. This paper presents the outcome of a research project on the protection provided to Lithuanian consumers by the legislation adopted to transpose the provisions of Directive 93/13/EEC on unfair contract terms into national law. This research was supported by the Eurofaculty of Vilnius University in May/June 2005.