Scaling Properites of Price Changes for Korean Stock Indices

Kyuong Eun Lee and Jae Woo Lee

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Abstract: We consider returns of two Korean stock market indices, KOSPI and KOSDAQ index. Central parts of the probability distribution function of returns are well fitted by the Lorentzian distribution function. However, tail parts of the probability distribution function follow a power law behavior well. We found that the probability distribution function of returns for both KOSPI and KOSDAQ, is outside the L\'{e}vy stable distribution.

Date: 2004-07
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Published in J. Korean Phys. Soc. 44, 668(2004)

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