The study attempts to find out the impact of buyback announcement on share price. Paired sample T-test is employed to compare share price before and after the buyback announcement. The analysis of variance is also used to find out whether there is any significant difference among industries in the price change due to buyback announcement. The study is carried out from 1st January 2005 to 31st D...

One option-pricing problem that has hitherto been unsolved is the pricing of a European call on an asset that has a stochastic volatility. This paper examines this problem. The option price is determined in series form for the case in which the stochastic volatility is independent of the stock price. Numerical solutions are also produced for the case in which the volatility is correlated with t...

Rice plays an especial role in Iranian households' nutrition basket. The volatilities of its price during recent years caused consumers' dissatisfaction. This paper investigates spillover effects of price volatilities (at the wholesale and retail levels) in the Guilan Province rice market. The Generalized Autoregressive Conditional Hetroscedasitic (GARCH) model was used for the monthly time per...

Conventional time series analysis, focusing exclusively on a time series at a given scale, lacks the ability to explain the nature of the data generating process. A process equation that successfully explains daily price changes, for example, is unable to characterize the nature of hourly price changes. On the other hand, statistical properties of monthly price changes are often not fully cover...

Conventional time series analysis, focusing exclusively on a time series at a given scale, lacks the ability to explain the nature of the data generating process. A process equation that successfully explains daily price changes, for example, is unable to characterize the nature of hourly price changes. On the other hand, statistical properties of monthly price changes are often not fully cover...

If price volatility is caused in some part by taste shocks, then it should be positively correlated with the liquidity premium. Our argument is based on Krishna and Sadowski (2014), who provide foundations for a representation of dynamic choice with taste shocks, and show that volatility in tastes corresponds to a desire to maintain exibility. To formally connect volatile tastes to price volati...

We estimate the probability of informed trading (Pi) in an order-driven stock market and perform a comprehensive analysis on the interrelations among Pi and three common performance indicators: liquidity, volatility, and efficiency. We find that uninformed traders exhibit price chasing behavior, and price volatility attracts uninformed traders. Using 3SLS which considers the endogeneity of Pi a...

We analyze how the entry of less informed participants in a market for a risky asset affects the volatility of the price of the asset. In an endogenous participation model, we show that in equilibrium the new market entrants are less informed than the rest of the participants. We study how volatility depends on market participation and on the level of information of the participants. The condit...

return and volatility spillovers are important for portfolio selection, asset valuation and market efficiency investigation. using a var-bekk framework model, this paper investigates return and volatility spillover effects between three size-sorted equity indices in tehran stock exchange (tse). although daily return of large stocks leads small stocks (lead-lag effect), there wasn’t any spillove...

Broadly speaking, interventions to reduce the costs associated with price volatility can be divided into two types. First, there are interventions that reduce price volatility, such as improving market information (Box 7). Second, there are interventions that accept price volatility as given and attempt to cope with it. These coping mechanisms can be either before (ex ante) or after (ex post) t...