Modeling and forecasting volatility of capital markets has been important area of inquiry and research in financial economics with the recognition of time-varying volatility, volatility clusturing, and asymmetric response of volatility to market movements. Given the anticipated growth of the Nepalese stock market and increasing interest of investors towards investment in Nepalese stock market, ...

We empirically examine the impact of trading activities on the liquidity of individual equity options measured by the proportional bid–ask spread. There are three main findings. First, the option return volatility, defined as the option price elasticity times the stock return volatility, has a much higher power in explaining the spread variations than the commonly considered liquidity determina...

The availability of intraday stock/index return in the web facilitates the improvement of return volatility estimation over the traditional method that is based on inter-day return data. Truncated Levy process distribution is used to extract the intraday return distribution parameters. The calibration to the volatility for Black-Scholes option pricing is studied using the data from Levy-Gaussia...

Prior research has shown that informed trading activity decreases the stock return volatility because trading causes stock prices to converge to fundamentals. On the contrary to existing studies, this paper documents the empirical asymmetric relation between informed trading activity and volatility. Stocks with relatively less private information are associated with lower participation of infor...

This paper studies the dynamic behavior of risks and returns in Chinese stock markets. We characterize the time-series properties of stock-market return and volatility and test the market e–ciency hypothesis. We estimate an empirical model that captures the efiect of local and global information variables on the conditional mean of stock-market returns and characterize the second order conditio...

this paper investigates empirically the effect of volatility of the exchange rate of the u.s. dollar vis-à-vis the euro on u.s. stock market volatility while controlling for a number of drivers of stock return volatility. using a garch(1, 1) model and using weekly data covering the period from the week of january 1, 1999 through the week of january 25, 2010, it is found that the 9/11 terrorist ...

the purpose of this research is to examine the existence of seasonality in the stock market return, its volatility and trading amount associated with moving calendar events such as the holy month of ramadan using a garch specification and data for the tehran stock exchange (tse) from april 1998 to june 2010. the result shows a statistically significant increase in returns and a systematic patte...

This paper presents an empirical analysis of volatility and contagion across 19 emerging and developed stock markets in the 1990s. First, using an efficient estimate of unconditional stock return volatility we show that contemporaneous return and volatility correlation across stock markets have increased substantially in the 1990s. Second, using simple rolling regressions and goodness of fit me...

Many empirical studies have found a positive relationship between return volatility and trade volume. A number of theoretical papers predict this volume/volatility relationship. In contrast, Jones, Kaul and Lipson (1989) find that return volatility is best explained by transaction counts, rather than volume or average trade size. Our paper tests the robustness of this trade count/volatility res...