Risk Management for Hedge Fund Portfolios

This article applies formal risk management methodologies to optimization of a portfolio of hedge funds (fund of funds). We compare recently developed risk management methodologies: conditional value-at-risk and conditional drawdown-at-risk with more established mean-absolute deviation, maximum loss, and market neutrality approaches. The common property of considered risk management techniques is that they admit the formulation of a portfolio optimization model as a linear programming (LP) problem. LP formulations allow for implementing efficient and robust portfolio allocation algorithms, which can successfully handle optimization problems with thousands of instruments and scenarios. The performance of various risk constraints is investigated and discussed in detail for in-sample and out-of-sample testing of the algorithm. The numerical experiments show that imposing risk constraints may improve the “real” performance of a portfolio rebalancing strategy in out-of-sample runs. It is beneficial to combine several types of risk constraints that control different sources of risk.

[1]  M. Pritsker Evaluating Value at Risk Methodologies: Accuracy versus Computational Time , 1996 .

[2]  W. V. Harlow Asset Allocation in a Downside-Risk Framework , 1991 .

[3]  Harry M. Kat,et al.  Hedge Fund Performance 1990–2000: Do the “Money Machines” Really Add Value? , 2003, Journal of Financial and Quantitative Analysis.

[4]  William N. Goetzmann,et al.  Hedge Funds with Style , 2001 .

[5]  Fred Stambaugh,et al.  Risk and value at risk , 1996 .

[6]  H. Konno,et al.  Mean-absolute deviation portfolio optimization model and its applications to Tokyo stock market , 1991 .

[7]  Philippe Artzner,et al.  Coherent Measures of Risk , 1999 .

[8]  David Hsieh,et al.  Performance Characteristics of Hedge Funds and Commodity Funds: Natural vs. Spurious Biases , 2000, Journal of Financial and Quantitative Analysis.

[9]  P. Krokhmal,et al.  Portfolio optimization with conditional value-at-risk objective and constraints , 2001 .

[10]  Helmut Mausser,et al.  Beyond VaR: from measuring risk to managing risk , 1999, Proceedings of the IEEE/IAFE 1999 Conference on Computational Intelligence for Financial Engineering (CIFEr) (IEEE Cat. No.99TH8408).

[11]  W. Fung,et al.  The Risk in Hedge Fund Strategies: Theory and Evidence from Trend Followers , 2001 .

[12]  Richard W. McEnally,et al.  The Performance of Hedge Funds: Risk, Return, and Incentives , 1999 .

[13]  Wlodzimierz Ogryczak,et al.  From stochastic dominance to mean-risk models: Semideviations as risk measures , 1999, Eur. J. Oper. Res..

[14]  Stavros A. Zenios,et al.  High-performance computing in finance: The last 10 years and the next , 1999, Parallel Comput..

[15]  Byung Ha Lim,et al.  A Minimax Portfolio Selection Rule with Linear Programming Solution , 1998 .

[16]  Stanislav Uryasev,et al.  Conditional Value-at-Risk for General Loss Distributions , 2002 .

[17]  Alan J. King,et al.  Tracking models and the optimal regret distribution in asset allocation , 1992 .

[18]  R. Rockafellar,et al.  Optimization of conditional value-at risk , 2000 .

[19]  Andrew W. Lo,et al.  Risk Management for Hedge Funds: Introduction and Overview , 2001 .

[20]  W. Ziemba,et al.  Worldwide asset and liability modeling , 1998 .

[21]  S. Uryasev,et al.  Portfolio Optimization with Drawdown Constraints , 2000 .

[22]  Helmut Mausser,et al.  Credit risk optimization with Conditional Value-at-Risk criterion , 2001, Math. Program..

[23]  Stavros A. Zenios,et al.  A model for portfolio management with mortgage-backed securities , 1993, Ann. Oper. Res..

[24]  D. Duffie,et al.  An Overview of Value at Risk , 1997 .

[25]  Hiroshi Konno,et al.  MEAN-ABSOLUTE DEVIATION PORTFOLIO OPTIMIZATION MODEL UNDER TRANSACTION COSTS , 1999 .

[26]  Philippe Jorion Value at risk: the new benchmark for controlling market risk , 1996 .

[27]  François-Serge Lhabitant,et al.  Assessing Market Risk for Hedge Funds and Hedge Fund Portfolios , 2001 .

[28]  Carlos E. Testuri,et al.  On Relation between Expected Regret and Conditional Value at Risk , 2000 .

[29]  H. Konno,et al.  Equilibrium relations in a capital asset market: A mean absolute deviation approach , 1994 .

[30]  Antonio Marcos. Duarte,et al.  Fast Computation of Efficient Portfolios , 1999 .

[31]  W. Fung,et al.  Empirical Characteristics of Dynamic Trading Strategies: The Case of Hedge Funds , 1997 .

[32]  Giorgio Consigli,et al.  Dynamic stochastic programmingfor asset-liability management , 1998, Ann. Oper. Res..