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arXiv 1809.09601q-fin.TR
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一个自适应的、产生正收益、波动性和系统风险的市场行为模型

A model of adaptive, market behavior generating positive returns, volatility and system risk

Misha Perepelitsa

摘要:

我们描述了一个基于经济主体适应行为的简单投机交易模型,这种适应行为通过一个反馈机制来表达,该机制根据投资组合的过去表现来改变经济主体的股票-债券比率,股票价格根据经济主体的目标风险水平得出的资产供求关系来设定。使用基于代理的建模方法,我们表明,代理,内生和自适应的行为,创造一个持久的价格泡沫。交易过程产生的价格动态并没有揭示任何奇异性,但是这个过程伴随着不断增长的总风险,这表明崩溃的可能性越来越大。

英文摘要:

We describe a simple model for speculative trading based on adaptive behavior of economic agents.The adaptive behavior is expressed through a feedback mechanism for changing agents' stock-to-bond ratios, depending on the past performance of their portfolios.The stock price is set according to the demand-supply for the asset derived from the agents' target risk levels. Using the methodology of agent-based modeling we show that agents, acting endogenously and adaptively, create a persistent price bubble. The price dynamics generated by the trading process does not reveal any singularities, however the process is accompanied by growing aggregated risk that indicates increasing likelihood of a crash.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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