Browsing NUP Academic Publications - Ακαδημαϊκές Δημοσιεύσεις ΠΝΠ by Author "Giannopoulos, Kostas"

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  • Backtesting Derivative Portfolios with Filtered Historical Simulation (FHS) 

    Barone-Adesi, Giovanni; Giannopoulos, Kostas; Vosper, Les (Blackwell Publishers Ltd, 2002)
    Filtered historical simulation provides the general framework to our backtests of portfolios of derivative securities held by a large sample of financial institutions. We allow for stochastic volatility and exchange rates. ...

  • Backtesting Derivative Portfolios with Filtered Historical Simulation (FHS) 

    Barone-Adesi, Giovanni; Giannopoulos, Kostas; Vosper, Les (European Financial Management, 2002)
    Filtered historical simulation provides the general framework to our backtests of portfolios of derivative securities held by a large sample of financial institutions. We allow for stochastic volatility and exchange rates. ...

  • Coherent risk measures under filtered historical simulation 

    Giannopoulos, Kostas; Tunaru, Radu (Elsevier, 2005-04)
    Recent studies have strongly criticised conventional VaR models for not providing a coherent risk measure. Acerbi provides the intuition for an entire family of coherent measures of risk known as “spectral risk measures” ...

  • Don't look back 

    Barone-Adesi, Giovanni; Bourgoin, Frederick; Giannopoulos, Kostas (1998)
    Value at risk is becoming increasingly popular as a management and regulatory tool. But before this acceptance goes much further, we need to assess its reliability under financial market conditions. Most VAR models deal ...

  • Estimating the Joint Tail Risk Under the Filtered Historical Simulation. An Application to the CCP's Default and Waterfall Fund 

    Barone-Adesi, Giovanni; Giannopoulos, Kostas; Les, Vosper (Geneva :Swiss Finance Institute, 2015)
    To ensure that central counterparties (“CCPs”) are safe in all market conditions the European Union (EU) has adopted legislation, commonly known as the European Market Infrastructure Regulation (“EMIR”) that deal with their ...

  • Estimating the time Varying Components of international stock markets' risk 

    Giannopoulos, Kostas (1995)
    In this study an alternative approach for assessing securities' risk is applied. Various authors have argued that security returns are not homoskedastic but exhibit variation over time. They have observed that large changes ...

  • Filtering Historical Simulation. Backtest Analysis 

    Giannopoulos, Kostas; Barone-Adesi, Giovanni; Vosper, Les (2000)
    This paper we backtest the FHS VaR model on three types of portfolios invested over a period of two years. The first set of backtests consists of LIFFE financial futures and options contracts traded on LIFFE. In the second ...

  • GARCH models in Risk Management. MEASURING VOLATILITY 

    Giannopoulos, Kostas (Butterworth Heinemann, 2000-02)
    Abstract The objective of this chapter is to examine the ARCH family of volatility models and its use in risk analysis and measurement. An overview of unconditional and conditional volatility models is provided. The former ...

  • A Market Risk Model for Asymmetric Distributed Series of Return 

    Giannopoulos, Kostas; Nekhili, Ramzi (2012)
    In this paper we propose to model short-term interest rates by taking into consideration both the asymmetric properties of returns, using Pearson’s type IV distribution, and the time-varying volatility, using GARCH models. ...

  • Non parametric VaR Techniques. Myths and Realities 

    Giannopoulos, Kostas; Barone-Adesi, Giovanni (Wiley Online Library, 2003-12-03)
    VaR (value-at-risk) estimates are currently based on two main techniques: the variance-covariance approach or simulation. Statistical and computational problems affect the reliability of these techniques. We illustrate a ...

  • Nonparametric, conditional pricing of higher order multivariate contingent claims 

    Giannopoulos, Kostas (2008-09)
    This paper describes and applies a nonparametric model for pricing multivariate contingent claims. Multivariate contingent claims are contracts whose payoffs depend on the future prices of more than one underlying variable. ...

  • Portfolio selection under VaR constraints 

    Giannopoulos, Kostas; Clark, Ephraim; Tunaru, Radu (Springer-Verlag, 2005-03)
    In this paper we show that by assuming a constant variance/covariance matrix over the holding period, the VaR limits can often be exceeded within the relevant horizon period. To minimize this risk, we formulate the problem ...

  • Pricing Basket spread options 

    Giannopoulos, Kostas (Society for Computational Economics, 2006)
    This paper describes and analyses the use of the Filtered Historical Simulation algorithm in pricing spread options. Spread options are contracts whose payoff depends on the price difference (spread) between two or more ...

  • A Probabilistic Approach to Worst Case Scenarios 

    Barone-Adesi, Giovanni; Bourgoin, Frederick; Giannopoulos, Kostas (1997)
    Value at Risk (VaR) is increasingly popular as a management and regulatory tool. To further its acceptance it is necessary to assess its reliability under conditions likely to be encountered in financial markets. A logical ...

  • A Relative Research of the Vasicek and the CIR Model 

    Christoforou, Nektaria (Business Administration Programm, School of Economic Sciences and Business, Neapolis University Pafos, 2017)
    Recent years have seen the development of theoretical models of the structure of interest rate models. The modeling and forecasting of interest rates is an especially prime and challenging. It is one of the most prime ...

  • A Simplified Approach to the Conditional Estimation of Value at Risk (VAR) 

    Barone-Adesi, Giovanni; Giannopoulos, Kostas (Futures & Options World, 1996)
    Emerging risk-management techniques use Value at Risk (VAR) to assess the market risk of a portfolio. We propose a relative simple method to estimate VAR conditionally to reflect new information about the volatility of ...

  • A Simplified Approach to the Conditional Estimation of Value at Risk (VAR) 

    Barone-Adesi, Giovanni; Giannopoulos, Kostas (1997)
    Emerging risk-management techniques use Value at Risk (VAR) to assess the market risk of a portfolio. We propose a relative simple method to estimate VAR conditionallyto reflect new information about the volatility of ...

  • VaR Modelling on Long Run Horizons 

    Giannopoulos, Kostas (Kluwer Academic Publishers-Plenum Publishers, 2003-07)
    The Value-at-Risk (VaR) criterion as a measure of portfolio's risk on long run horizons is considered. The method which makes possible to generate VaR estimates on longer horizons is suggested. The VaR estimation is based ...

  • VaR Without Correlations for Portfolios of Derivative Securities 

    Barone-Adesi, Giovanni; Giannopoulos, Kostas; Vosper, Les (Wiley Online Library, 1999)
    We propose filtering historical simulation by GARCH processes to model the future distribution of assets and swap values. Options’ price changes are computed by full reevaluation on the changing prices of underlying assets. ...

  • Volatility Spillovers and Price Interdependencies; A Dynamic non Parametric Approach 

    Giannopoulos, Kostas; Nekhili, Ramzi; Koutmos, Gregory (International Research Journal of Finance and Economics, 2010)
    This paper investigates the volatility spillovers of four major equity markets using a new approach namely, the Filtered Historical Simulation approach (FHS). The FHS captures very effectively the changes ...