Risk estimation or volatility estimation at financial markets, particularly stock exchange markets, is complex issue of … pricing of stocks and better risk management. The aim of this research is to test applicability of simple models like Simple … Moving Average (SMA) and Exponentially Weighted Moving Average (EWMA) to estimate risk. The performance of SMA and EWMA with …

of data is an increasingly important source of uncertainty about the state of the economy and offer an alternative … channel of uncertainty - data uncertainty. This paper adds on the uncertainty literature and focuses on data uncertainty …, which originates in the revision structure of data. We find that apart from the general and economic policy uncertainty, the …