Full Revaluation. The HsVaR determined through full revalua- tion (FR) involved calculation of the price of the individual instruments for each of the 499 possible values of the underlying risk factor (a total of 500 valuations including the current day’s price com- putation, for each instrument).Click to see full answer. Considering this, what is partial revaluation?The deviations of risk factors from their current values are derived and the deviations of value of the instrument, using these sensitivities, follow directly. This is a “partial revaluation” method because the new values result from applying constant sensitivities to initial values.Likewise, what is historical simulation VaR? Historical simulation. A method of calculating value-at-risk (VaR) that uses historical data to assess the impact of market moves on a portfolio. A current portfolio is subjected to historically recorded market movements; this is used to generate a distribution of returns on the portfolio. In this regard, what is the historical method of calculating VaR what are its advantages? Historical VaR. One advantage of historical VaR is that it is extremely simple to calculate. Another advantage is that it is easy to explain to non-risk professionals. The historical approach is non-parametric. We have not made any assumptions about the distribution of historical returns.What are the challenges in calculating VaR for a mixed portfolio?Need to measure not only return and volatility of individual assets, but also the correlations between them. When the number and diversity of positions grow, the difficulty and cost of measuring risk grows exponentially.