Purpose – In order to assess the informational efficiency of African equity markets (AEMs), the purpose of this paper is to examine long memory in both equity returns and volatility using auto‐regressive fractionally integrated moving average (ARFIMA)‐FIGARCH/hyperbolic GARCH (HYGARCH)...

Purpose – This paper aims to show that tax-motivated early exercise of US employee stock options can be, in principle, rationalized for bullish executives. The paper aims to show empirical evidence consistent with private positive information guiding the timing of the exercises....

Purpose – Negative relationship between the return of a stock and its liquidity suggests that the illiquid stocks are riskier than liquid stocks. Thus, researchers tend to include the stock liquidity as a variable in asset pricing models, where the stock and market liquidities are usually...

Purpose – The purpose of this paper is to investigate the performance of the arbitrage pricing theory (APT) in the Istanbul Stock Exchange (ISE) on a monthly basis, for the period January 2001 to September 2005. Design/methodology/approach – This study examines six pre-specified...

Purpose – The purpose of this paper is to develop a single variable indicative of the state of market speculation; to determine whether the Federal Reserve has attempted to quell speculation when it has been most rampant and whether such attempts were successful. Design/methodology/approach...

Purpose – The random walk forecast of exchange rate serves as a standard benchmark for forecast comparison. The purpose of this paper is to assess whether this benchmark is unbiased and directionally accurate under symmetric loss. The focus is on the random walk forecasts of the dollar/euro...

Purpose – In order to assess the informational efficiency of African equity markets (AEMs), the purpose of this paper is to examine long memory in both equity returns and volatility using auto-regressive fractionally integrated moving average (ARFIMA)-FIGARCH/hyperbolic GARCH (HYGARCH) models....

Purpose – The purpose of this paper is to investigate the time-varying risk return relationship and the persistence of shocks to volatility within GARCH framework both in developed and emerging markets. Design/methodology/approach – This paper uses nonlinear ARCH and GARCH-family models for...

Purpose – Some members of Congress in the USA have expressed serious concern that endowment spending rates of major American universities are too low. The purpose of this paper is to derive optimal spending rates and compare them with actual rates to determine if this concern is warranted....

Purpose – The purpose of this paper is to investigate dividend policy decisions in developing countries through studying Jordanian non-financial firms. It aims to highlight the issue of dividend policy and the behaviour of dividends in Jordan as an emerging market. Design/methodology/approach...