The present research investigates the impact of trading volume on stock return volatility using data from the Greek banking system. For our analysis, the empirical study uses daily measures of volatility constructed from intraday data for the period 5 January 2001-30 December 2020. This period...

In this paper, we study the impact of Greek government-debt crisis events on European financial markets during the European sovereign debt crisis. We examine the effect of three categories of Greek government-debt crisis events in realized correlation and correlation jumps of government bonds,...

The intraday nonparametric estimation of the variance-covariance matrix adds to the literature in portfolio analysis of the Greek equity market. This paper examines the economic value of various realized volatility and covariance estimators under the strategy of volatility timing. I use three...