

Physicist’s Point of View on the Way to Equilibrium and Efficiency of Stock Market
https://doi.org/10.32609/0042-8736-2009-11-82-89
Abstract
The article provides a new method for testing the efficient market hypothesis in its weak form. A special model of stock market is built to estimate correlation functions. The main result is that the dynamics of share prices is close to the random walk but could be better described by a more sophisticated law of distribution. The market processes new information with a certain lag but its reaction is fast enough. Share prices reflect exogenous shocks much quicker than endogenous ones.
About the Author
A. LeonidovRussian Federation
References
1. Bouchaud J.-F., Farmer J. D., Lillo F. How Markets Slowly Digest Changes in Supply and Demand // Handbook of Financial Markets: Dynamics and Evolution / T. Hens, K. Schenk-Hoppe (eds.). Elsevier: Academic Press, 2008.
2. Fama E. Efficient Capital Markets: A Review of Theory and Empirical Work // Journal of Finance. 1970. No 25. Р. 383-417.
3. Fama E., French K. The Cross-Section of Expected Stock Returns // Journal of Finance. 1992. No 47. Р. 427-465.
4. Leonidov A., Trainin V., Zaitsev A. Market Mill Dependence Pattern in the Stock Market: Asymmetry Structure, Nonlinear Correlations and Predictability // arXiv:physics, 0601098.
5. Leonidov A., Trainin V., Zaitsev A. On Collective non-gaussian Dependence Patterns in High Frequency Financial Data // ArXiv:physics, 0506072.
6. Leonidov A., Trainin V., Zaitsev A., Zaitsev S. Market Mill Dependence Pattern in the Stock Market: Distribution Geometry, Moments and Gaussization // arXiv:physics, 0603103.
7. Leonidov A., Trainin V., Zaitsev A., Zaitsev S. Market Mill Dependence Pattern in the Stock Market: Individual Portraits // arXiv:physics, 0605138.
8. Leonidov A., Trainin V., Zaitsev A., Zaitsev S. Market Mill Dependence Pattern in the Stock Market: Modeling of Predictability and Asymmetry via Multi-component Conditional Distribution // Physica A. 2007. Vol. 386. No 1.
9. Plerou V., Gopikrishnan P., Gabaix X., Stabley H.E. Quantifying Stock Price Responce to Demand Fluctuations // Physical Review. 2002. E66, 027104.
10. Sornette D., Deschatres F., Gilbert T., Ageon Y. Endogeneous Versus Exogeneous Shocks in Complex Networks: an Empirical Test Using Book Sale Ranking // Physical Review. 2004. Lett. 93, 228701.
11. Sornette D., Malevergne Y., Muzy J.-F. What causes crashes? // Risk. 2003. Vol. 16, No 67.
12. Zaitsev S., Zaitsev A., Leonidov A., Trainin V. Market Mill Dependence Pattern in the Stock Market: Multiscale Conditional Dynamics // Physica A. 2009. Vol. 388, No 21, P. 4624-4634.
Review
For citations:
Leonidov A. Physicist’s Point of View on the Way to Equilibrium and Efficiency of Stock Market. Voprosy Ekonomiki. 2009;(11):82-89. (In Russ.) https://doi.org/10.32609/0042-8736-2009-11-82-89