None of the previous Extreme Value Theory-based methods for quantile estimation yield VaR estimates that reflect the current volatility background. These methods are called Unconditional Extreme Value Theory methods. Given the conditional heteroscedasticity characteristic of most financial data, McNeil and Frey (2000) proposed a new methodology to estimate the VaR that combines the Extreme Value Theory with volatility models, known as the Conditional Extreme Value Theory. These authors proposed GARCH models to estimate the current volatility and Extreme Value Theory to estimate the distributions tails of the GARCH model shocks.If the financial returns are a strictly stationary time series and ɛ follows a Generalised Pareto Distribution, denoted by G k,σ (ɛ ), the conditional α quantile of the returns can be estimated as