Purpose of this paper - The current paper aims to analyze the impact of the debt crisis on the FTSE/ASE 20 index volatility. The research also examines the impact of powerful foreign capital markets on the Greek Stock Exchange market, the seasonality returns (Day-of-the-Week effect) and the...

We pursue the first large scale investigation of a strongly growing mutual fund type: Islamic funds. Based on an unexplored, survivorship bias adjusted dataset, we analyse the financial performance and investment style of 265 Islamic equity funds from twenty countries. As Islamic funds often...

This paper considers spot variance path estimation from datasets of intraday high frequency asset prices in the presence of diurnal variance patterns, jumps, leverage effects and microstructure noise. We rely on parametric and nonparametric methods. The estimated spot variance path can be used...

This paper examines the lead-lag relationship between the Istanbul Stock Exchange 30 (ISE 30) Index and index futures prices at the Turkish Derivatives Exchange using daily observations from February 2005 to May 2008. It is found out that spot prices lead the futures prices for ISE 30 Index...

We compare more than 1000 different volatility models in terms of their fit to the historical ISE-100 Index data and their forecasting performance of the conditional variance in an out-of-sample setting. Exponential GARCH model of Nelson (1991) with “constant mean, t-distribution, one lag...

This paper explores differences in the impact of equally large positive and negative surprise return shocks in the aggregate U.S. stock market on: 1) the volatility predictions of asymmetric time series models, 2) implied volatility, and 3) realized volatility. Both asymmetric time series models...

After a market downturn, especially in an uncertain economic environment such as the current state, there can be a relatively long period with a sideways market, where indexes, stocks, etc., move in channels with support and resistance levels. We discuss option pricing in such scenarios, in both...

With the increasing integration of wind and photovoltaic power in the whole European power system, there is a longing for detecting how to trade energy in the ever-changing intraday market from electric power industries. The intraday trading becomes even more relevant in the wake of the European...

We show that incorporating endogenously-determined structural breaks into an asymmetric GARCH model reduces volatility persistence in Bitcoin prices. We find that both good news and bad news have less impact on volatility if structural breaks are incorporated. Hence, our results may indicate...

We discuss the pros of adopting government-issued digital currencies as well as a supranational digital iCurrency. One such pro is to get rid of paper money (and coinage), a ubiquitous medium for spreading germs, as highlighted by the recent coronavirus outbreak. We set forth three policy...