this thesisis based on $3$ published papers \cite{SY,SPY,income} which dividethis study into two parts. The first part … Heston model withstochastic volatility.After characterizing the stock returns at mesoscopic time lags, westudy the … subordination hypothesis with one year of intraday data.We verify that the integrated volatility $V_t$ constructed fromthe number of …

volatility on foreign exchange markets. Starting point is the market participant's microeconomic investment decision, which is … trading volume and volatility on foreign exchange markets. We apply various two-country-models with representative market …

into volatility persistence in stock returns. In part two, I show that the introduction of continuous trading on the WSE is … volatility on days after limit hits and positive autocorrelation in stock returns. I do not find significant advantages of this …

real terms. Ninety five per cent of the income of medical schemes was derived from membership fees. The average real growth … rate of income was 8.4 per cent, while net assets increased by only 3 per cent. An average deficit of R11.02 million …