CF99 Tutorials (January 6)

There are four tutorials on Wednesday, January 6, 1999. They are designed to inform the diverse group of participants on a selection of the latest tools and research results. Attendees will be given copies of the handouts and other material provided by the speakers.
 
  8:30 - 10:30  Hedge Fund Styles 

Prof. David A. Hsieh, Finance Department, Fuqua School of Business, Duke University 

Hedge funds have been in the news lately. There are several important questions regarding hedge funds: 

  • Are hedge fund returns different from mutual funds? 
  • If so, how do hedge funds create returns that are different from mutual funds? 
  • How many different ways can hedge fund create returns that are different from mutual funds and different from each other? 
  • How can an investor use these hedge fund styles? 
  • How does an investor evaluate the risk of these hedge fund styles? 
  • What are some appropriate benchmarks for hedge fund returns? 
The tutorial will focus on what are the answers to these questions based on research done thus far, and what are still to be answered. 


stephen.gif (8826 bytes) 10:45 - 12:45  Forecasting Volatility 

Prof. Stephen Figlewski, Finance Department, Stern School of Business, New York University 

Valuation models for options and other derivative securities require volatility forecasts for the underlying assets. So do quantitative methods for assessing market risk exposure, such as Value-at-Risk, that are being widely adopted in the securities industry. The tutorial will describe the different forecasting approaches and present a critical discussion of the tactics, strategy, and underlying philosophy behind them. Among the issues to be addressed are the following. 

  • Modeling philosophy: What do we actually mean by volatility? How should we think about the general problem of forecasting it? 
  • Forecasting volatility from historical data: If the real world consisted of lognormal diffusions with constant volatility parameters, or even if volatilities were time-varying but followed constant volatility processes, appropriate statistical estimation techniques would be unambiguous. But the real world is more random and less predictable than that. So what works best in practice: The classical unconditional volatility estimator? Generalized Autoregressive Conditional Heteroskedasticity (GARCH)? Or maybe a tweaked classical model based on "Optimized Unconditional Conditional Heteroskedasticity" (OUCH)?
  • Implied volatility as a forecast: Both academics and practitioners believe strongly that implied volatilities derived from observed market option prices contain more information than do historical estimates. Yet they differ completely in what they think that information is and how they use it. Moreover, empirical studies find that implied volatilities do not pass standard unbiasedness tests. So what information is obtainable from implied volatilities and how do we get it?

   1:45 - 3:45  Neuro-Dynamic Programming and Reinforcement Learning for Finance 

Prof. Benjamin Van Roy, Engineering Economic Systems Department, Stanford University  

In principle, a wide variety of financial decision problems - ranging from dynamic asset allocation to derivatives pricing and hedging to transaction cost optimization - can be formulated in terms of stochastic control and solved by the algorithms of dynamic programming. Unfortunately, due to the curse of dimensionality, the associated computational requirements become intractable in most practical contexts. This tutorial will overview the main ideas and state-of-the-art of neuro-dynamic programming (a.k.a. reinforcement learning), a new methodology that offers a tractable approach to approximating dynamic programming solutions. Application areas in finance including derivatives pricing and asset allocation will be discussed, as will past experience with the use of such a methodology. 


  4:00 - 6:00  Data Snooping 

Prof. Halbert White  Economics Department, University of California at San Diego 

This tutorial will explore issues of data snooping (or data mining in the negative sense) in evaluating the performance of asset trading/investment strategies. Particular attention will be devoted to new bootstrap-based methods for avoiding falling prey to data snooping/mining biases in selecting market strategies. The tutorial assumes a basic understanding of probability and statistics. 



Responsible for this page: Andreas Weigend. Any feedback is welcome.
URL: http://www-psych.stanford.edu/~andreas/CF99