This paper investigates the relation between lunar phases and stock market returns of 48 countries. The findings indicate that stock returns are lower on the days around a full moon than on the days around a new moon. The magnitude of the return difference is 3% to 5% per annum based on analyses of two global portfolios: one equal-weighted and the other value-weighted. The return difference is ...

Article history: Received 12 September 2014 Accepted 20 January 2015 Available online 24 January 2015 We investigate the daily short-selling by foreign investors and their impact on stock price, liquidity, and volatility in the Korean stock market. From January 1, 2006, to May 31, 2010, we find that the majority of short-selling is performed by foreign, rather than by domestic, investors and th...

The paper investigates market reaction to announcements of stock repurchases and dividends and determinants of choice between the two payout methods. The analysis uses data on Polish firms with the sample period encompassing a significant tax regulation change. The average announcement period abnormal returns are relatively high and exceed 6% for stock repurchases and 2% for dividend initiation...

This research aims to analyze and to compare the ability of different mathematical models, such as artificial neural networks (ANN) and ARCH and GARCH models, to forecast the daily exchange rates Euro/U.S. dollar (USD), identifying which, among all the models applied, produces more accurate forecasts. By empirically comparing the different mathematical models developed in this research, the tra...

The paper analyzes the interactions between the precision of information, trade and welfare within a decision framework of an exporting firm. Information in a financial market is described in terms of a publicly observable signal. With higher transparency, the signal conveys more precise information about the random foreign exchange rate. More precise information about exchange rate changes has...

Article history: Received 30 March 2013 Accepted 14 May 2013 Available online xxxx JEL classification: C02 C13 G14

portfolio selection is considered a critically significant decision, firms have to make. as such, much research has been focused on the selection of a portfolio with a controlled level of risk and high expected return. this paper uses a new definition of risk for portfolio selection whereby risk taking is taken as a curve instead of a specific value. in this paper, a genetic algorithm is presen...

One of the most important methods employed to measure the market risk is value at risk calculation method. In this study, the value at risk of banks listed on the Tehran Stock Exchange and Over-the-counter (OTC) are calculated using parametric model, Monte Carlo simulation, historical simulation and Two-Sided Power (TSP) Distribution. The sample includes all listed banks in Iran. The results sh...

This paper presents an optimal portfolio selection approach based on value at risk (VaR), conditional value at risk (CVaR), worst-case value at risk (WVaR) and partitioned value at risk (PVaR) measures as well as calculating these risk measures. Mathematical solution methods for solving these optimization problems are inadequate and very complex for a portfolio with high number of assets. For t...