Study of Asian indexes by a newly derived dynamic model

Tsung-Jui Chiang-Lin, Yong-Shiuan Lee, Tzong-Hann Shieh, Chien-Chang Yen and Shang-Yueh Tsai

PLOS ONE, 2022, vol. 17, issue 5, 1-19

Abstract: We take the stock prices as a dynamic system and characterize its movements by a newly derived dynamic model, called the new Price Reversion Model (nPRM), for which the solution is derived and carefully analyzed under different circumstances. We also develop a procedure of applying the nPRM to real daily closing prices of a stock index. This proposed procedure brings a different perspective to the study of stock prices based on thermodynamics, and the time varying coefficients in the nPRM offer economic meanings of the stock movements. More specifically, the average of smoothed historical data A in the nPRM, analogous to the environment temperature in the Newton’s law of cooling, represent an implied equilibrium price. The heat transfer coefficient κ is adapted to be either negative or positive, which illustrates the speed of convergence or divergence of stock prices, respectively. The empirical study of ten Asian stock indexes shows that the nPRM accurately characterizes and forecasts the market values.

Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0266600

DOI: 10.1371/journal.pone.0266600

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