currencies position VaR estimates’ dependence on data aggregation functions (pointwise, maximum value, minimum value and average …. In the last chapter of the thesis the empirical study about Hurst index intraday value dependence on data aggregation …

study the change in the exponent of the tail decay under temporal aggregation of parameters, with the distribution of … aggregation, and these conditions cover most relevant combinations of parameters and innovation distributions. But we also prove …

We examine the impact of temporal and portfolio aggregation on the quality of Value-at-Risk (VaR) forecasts over a … based on asset class, or into a single portfolio. We compare the impact of aggregation to that of choosing a model for the … that the degree of temporal aggregation is most important. Daily returns form the best basis for VaR forecasts. Modelling …