Seasonality in stock returns and volatility: The Ramadan effect

Calendar anomalies in stock returns are well documented. Less obvious is the existence of seasonality in return volatility associated with moving calendar events such as the Muslim holy month of Ramadan. Using a GARCH specification and data for the Saudi Arabian stock market – now the largest stock market in the Muslim world – this paper documents a systematic pattern of decline in volatility during Ramadan, implying a predictable variation in the market price of risk. An examination of trading data shows that this anomaly appears to be consistent with a decline in trading activity during Ramadan. Evidence of systematic decline in volatility during Ramadan has significant implications for pricing of securities especially option-like products and asset allocation decisions by investors in the Islamic countries.     

On the exchange-rate elasticity of the demand for international reserves: Some evidence from industrial countries

Summary and Conclusion In this paper we tried to investigate the supposition that a change in exchange rate lowers the demand for international reserves. This goal was achieved by incorporating the real effective exchange rate into a standard real reserve demand equation from the literature. The model was estimated for a sample of 13 countries for which the effective exchange rate was available, using pooled quarterly data over the 1973-1985 period. The empirical results revealed that a change in exchange rate indeed reduces the demand for reserves supporting the theoretical arguments of the previous studies.     

How stable is the demand for money in Greece?

Abstract

The cointegration technique is now a common method of estimating any money demand function. Numerous studies that applied this technique to estimate the money demand function in Greece, interpreted their finding of cointegration as a sign of stable money demand. In this paper, after incorporating CUSUM and CUSUMSQ tests into cointegration analysis, we show that even though M1 and M2 monetary aggregates are cointegrated with income and interest rate, the M2 money demand function is unstable while M1 is stable.     

The J-curve: Malaysia versus her major trading partners

Currency depreciation is said to worsen the trade balance before improving it, hence the J-curve phenomenon. Since introduction of cointegration and error-correction modelling, researchers have tried to distinguish the short-run effects of currency depreciation from its long-run effects. A few studies that have investigated the experience of Malaysia, have relied upon aggregate trade data and have found no strong support for a significant relation between the real value of the ringgit and the Malaysian trade balance. In this article, we disaggregate the data by country and consider Malaysia's bilateral trade balance with her 14 largest trading partners. Using bound testing approach to cointegration and error-correction modelling, we provide some support for the J-curve hypothesis.     

Bilateral J-curve between India and her trading partners

This paper aims to test whether a given type of process innovation, namely flexible production technologies (FPTs), contributes to increased firm efficiency. Using one-year firm data from the Portuguese manufacturing industry and applying a parametric stochastic frontier approach, individual technical efficiencies are obtained and their determinants simultaneously estimated, using a single-step procedure recently proposed by Battese and Coelli (1995 Battese, G and Coelli, T. 1995. A model for technical inefficiency effects in a stochastic frontier production function and panel data. Empirical Economics, 20: 325–32.  ). The results support the hypothesis that technological flexibility, measured through the use of FPTs, is important in explaining differences in efficiency. Furthermore, given the specifications of the stochastic frontier function, the null hypothesis that Portuguese firms are fully technically efficient is rejected.     

Real and nominal effective exchange rates for developing countries: 1973:1-1997:3

The International Monetary Fund construct and publish real and nominal effective exchange rate data, mostly for developed countries. In this paper real and nominal effective rate data for developing countries are constructed. Application of the KPSS test to real effective rate data reveals that PPP holds in most countries.     

Commodity trade between Pakistan and the US: is there evidence of the J-curve?

A few studies that have attempted to estimate the short-run (J-curve) and long-run impact of exchange rate depreciation on Pakistan’s trade balance are either based on aggregate trade data between Pakistan and the rest of the world or between Pakistan and her bilateral trading partners. The findings are mixed at best. Considering the trade balance between Pakistan and the US, as one of its major partners, no significant effects have been discovered. Suspecting that the trade flows between the two countries could suffer from another aggregation bias, we disaggregate their trade flows by commodity and consider the trade balance of 45 industries that trade between the two countries. We find significant short-run effects of currency depreciation on the trade balance of 17 industries. The short-run effects last into the long run in 15 cases. The largest industry that account for more than 10% of the trade seems to benefit from real depreciation in the long run.     

Third-country exchange rate volatility and Japanese–US trade: evidence from industry-level data

As an important economic power globally as well as within Asia, Japan is susceptible to fluctuations in the yen versus both the dollar and its neighbours’ currencies. The resulting risk, from both sources, might, therefore, have important effects on Japanese trade. This study incorporates third-country exchange rate volatility (both yen-renminbi and dollar-renminbi) into a reduced form trade model for industry trade between the US and Japan. As was the case with a previous study that did not include these effects, our cointegration analysis finds that most industries are unaffected by risk. Third-country effects are, however, significant in a number of cases. Interestingly, a large share of US industries find that exports increase due to third-country risk, suggesting that this volatility is encouraging traders to reorient their trade markets by substitution.     

Estimating road traffic mortality more accurately: use of the capture-recapture method in the West Azarbaijan province of Iran

The study estimates the rate of fatal road traffic injuries (RTIs) by population and road-users group in one Iranian province. The capture - recapture method was employed, using both the death register and the forensic medicine register over one year. They recorded totals of 669 and 665 RTIs respectively, giving a non-overlapping number of 897 cases. An estimate of 1018 fatalities occurred, at rates of 34 per 100,000 of the population for all road users aggregated, 10 per 100,000 for pedestrians and 25 per 100,000 for other road users. Coverage was somewhat better for victims less than 15 years of age, and also for males. The method showed 121 under-reported cases in both sources; however, it can help Iranian policy-makers to produce a good estimation of fatal RTIs number each year, when following up current RTIs-prevention programmes. Yet, given that each registry operates separately, optimum coverage will only be obtained when both sources are integrated and work together.