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arXiv 1807.11751q-fin.ST
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金融市场中趋势与价值的共存:一个扩展的Chiarella模型的估计

Co-existence of Trend and Value in Financial Markets: Estimating an Extended Chiarella Model

Adam Majewski, Stefano Ciliberti, Jean-Philippe Bouchaud

摘要:

趋势和价值是所有金融市场普遍存在的异常现象。我们解决的问题,他们的共存和互动的框架内的异构代理模型(HABM)。更具体地说,我们扩展了Chiarella(1992)的模型,增加了噪声交易者和原教旨主义者的非线性需求。我们使用贝叶斯过滤技术来校准自1800年以来各种资产类别价格的时间序列模型。基本价值是校准的输出,不需要使用外部定价模型。我们的扩展模型再现了许多经验观察,包括过去的趋势和未来的回报之间的非单调关系。趋势追随者的不稳定活动导致错误定价分布的质的变化,从单峰到双峰,这意味着一些市场往往在很长一段时间内被高估(或低估)。

英文摘要:

Trend and Value are pervasive anomalies, common to all financial markets. We address the problem of their co-existence and interaction within the framework of Heterogeneous Agent Based Models (HABM). More specifically, we extend the Chiarella (1992) model by adding noise traders and a non-linear demand of fundamentalists. We use Bayesian filtering techniques to calibrate the model on time series of prices across a variety of asset classes since 1800. The fundamental value is an output of the calibration, and does not require the use of an external pricing model. Our extended model reproduces many empirical observations, including the non-monotonic relation between past trends and future returns. The destabilizing activity of trend-followers leads to a qualitative change of mispricing distribution, from unimodal to bimodal, meaning that some markets tend to be over- (or under-) valued for long periods of time.

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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