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Microscopic spin model for the dynamics of the return distribution of the Korean stock market index

✍ Scribed by Jae-Suk Yang; Seungbyung Chae; Woo-Sung Jung; Hie-Tae Moon

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
401 KB
Volume
363
Category
Article
ISSN
0378-4371

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✦ Synopsis

In this paper, we studied the dynamics of the log-return distribution of the Korean Composition Stock Price Index (KOSPI) from 1992 to 2004. Based on the microscopic spin model, we found that while the index during the late 1990s showed a power-law distribution, the distribution in the early 2000s was exponential. This change in distribution shape was caused by the duration and velocity, among other parameters, of the information that flowed into the market.

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