The arrival of news plays an extremely important role in the stock market because it mainly drives the movement of the stock market. In this paper, therefore, we would like to investigate how the Vietnamese stock market responses to the arrival of news via applying the AR – EGARCH in Mean...

The volatility clustering often seen in financial data has increased the interest of researchers in applying good models to measure and forecast stock returns. This paper aims to model the volatility for daily and weekly returns of the Portuguese Stock Index PSI-20. By using simple GARCH,...

This paper analyzes the impact of changes in the securities transaction tax (STT) rate on the local A-shares market in China. We find that, on average, a 22-base-point- increase in the STT rate is associated with about a 28% drop in trading volume, while a 17-base-point- reduction in the STT...

This paper models and forecasts volatility (conditional variance) on the Ghana Stock Exchange using a random walk (RW), GARCH(1,1), EGARCH(1,1), and TGARCH(1,1) models. The unique ‘three days a week’ Databank Stock Index (DSI) is used to study the dynamics of the Ghana stock market...

The Black Scholes Model (BSM) is one of the most important concepts in modern financial theory both in terms of approach and applicability. The BSM is considered the standard model for valuing options; a model of price variation over time of financial instruments such as stocks that can, among...

The effect of options’ introduction on underlying market is one of the frequently debated themes in financial research. A significant body of literature addresses the question of effects of options’ introduction. The critical review of the literature shows that there is no consensus among...

This study investigates correlations between India’s bustling single stock futures (SSFs) and its peculiar Badla mechanism. Data from the world’s most active SSF market, the National Stock Exchange (NSE) of India, are used. The results indicated that both the Badla mechanism and the...

U.S. stocks are more volatile than stocks of similar foreign firms. A firm’s stock return volatility can be higher for reasons that contribute positively (good volatility) or negatively (bad volatility) to shareholder wealth and economic growth. We find that the volatility of U.S. firms is...

This paper derives an adjusted Black-Scholes pricing formula. In separating risk and uncertainty using the robust control technique, we find that both uncertainty and risk raise management’s subjective evaluation of real options. We suggest a simple method to filter the risk of the project and...

This paper investigates the validation of the Mixture of Distributions Hypothesis (MDH) using trading volume and number of trades as contemporaneous proxies for information arrival in the Saudi Exchange (Tadawul). The sample comprises 15 sector indices from April 2008 to August 2013. The...