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28 March 2024
 
  » arxiv » cond-mat/0008387

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From market games to real-world markets
P. Jefferies ; M.L. Hart ; P.M. Hui ; N.F. Johnson ;
Date 28 Aug 2000
Subject Condensed Matter; Adaptation and Self-Organizing Systems | cond-mat nlin.AO
AffiliationOxford U. and CUHK
AbstractThis paper uses the development of multi-agent market models to present a unified approach to the joint questions of how financial market movements may be simulated, predicted, and hedged against. We examine the effect of different market clearing mechanisms and show that an out-of-equilibrium clearing process leads to dynamics that closely resemble real financial movements. We then show that replacing the `synthetic’ price history used by these simulations with data taken from real financial time-series leads to the remarkable result that the agents can collectively learn to identify moments in the market where profit is attainable. We then employ the formalism of Bouchaud and Sornette in conjunction with agent based models to show that in general risk cannot be eliminated from trading with these models. We also show that, in the presence of transaction costs, the risk of option writing is greatly increased. This risk, and the costs, can however be reduced through the use of a delta-hedging strategy with modified, time-dependent volatility structure.
Source arXiv, cond-mat/0008387
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