Coarse-graining and Self-similarity of Price Fluctuations
We propose a new approach for analyzing price fluctuations in their strongly correlated regime ranging from minutes to months. This is done by employing a self-similarity assumption for the magnitude of coarse-grained price fluctuation or volatility. The existence of a Cramer function, the characteristic function for self-similarity, is confirmed by analyzing real price data from a stock market. We also discuss the close interrelation among our approach, the scaling-of-moments method and the multifractal approach for price fluctuations.
Year of publication: |
2001-01
|
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Authors: | Fujiwara, Yoshi ; Fujisaka, Hirokazu |
Institutions: | arXiv.org |
Saved in:
freely available
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