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Herd Behavior of the Returns in Financial Markets

机译:金融市场收益的羊群行为

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摘要

The herd behaviors of returns for the won-dollar exchange rate and the KOSPI are analyzed in Korean financial markets. It is obtained that the probability distribution P(R) of returns R for three types of herding parameter satisfies a power-law behavior with the exponents β=2.2(the won-dollar exchange rate) and 2.4(the KOSPI). The crash regime in which P(R) increases with the increasing R appears when the herding parameter h satisfies h~*=2.33, since the active state of the transaction exists to decrease for h >2.33. Especially, we find that the distribution of normalized returns shows a crossover to a Gaussian distribution when the time step Δt=252 is used. Our results will be also compared to the other well-known analyses.
机译:在韩国金融市场上分析了韩元汇率和KOSPI收益的羊群行为。结果表明,三种羊群参数的收益率R的概率分布P(R)满足指数为β= 2.2(韩元兑美元汇率)和2.4(KOSPI)的幂律行为。当羊群参数h满足h〜* = 2.33时,出现P(R)随着R增大而增加的崩溃状态,因为事务的活动状态存在,当h> 2.33时减小。特别是,我们发现,当使用时间步长Δt= 252时,归一化收益率的分布与高斯分布有交叉。我们的结果还将与其他知名分析进行比较。

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