A New Scheme for Proactive Risk Management in Stock Market

26 Pages Posted: 16 Sep 2020

See all articles by Akihiko Takahashi

Akihiko Takahashi

University of Tokyo - Faculty of Economics

Soichiro Takahashi

University of Tokyo - Graduate School of Economics

Date Written: August 4, 2020

Abstract

This paper proposes a novel state-space approach to explain stock market dynamics driven by different types of trading, which leads to a new promising scheme for proactive risk management in financial investment. Particularly, it is assumed that the current price changes are formulated through daily trading by multiple types of traders, each of whom follows a specific investment strategy based on technical indicators and a fuzzy logic using past data of stock prices, volumes and yield curves. Moreover, the current price changes are represented by a linear combination of those multiple trading types, where the coefficients corresponding with the size of impact on the price changes are regarded as time-varying state variables to be sequentially estimated under a state-space framework. Thereby, this work develops a new factor decomposition method on price changes from a perspective of different traders' demand and supply to analyze the current situations and potential risks in financial markets.

In empirical experiments, it is shown that the implementation of particle filtering algorithm makes it possible to replicate market price changes. Further, new signals based on the estimated states are developed, which are applied to proactive risk management in financial investment. Especially, it has been found that the demands of yield curve-based traders subtracting those of trend-followers could be a promising signal of stock market crashes, which has successfully enhanced simple buy-and-hold strategy of SP, as well as constant proportion strategies.

Keywords: state-space model, fuzzy system, technical analysis, yield curve, trend following, proactive risk management

JEL Classification: C11, G11

Suggested Citation

Takahashi, Akihiko and Takahashi, Soichiro, A New Scheme for Proactive Risk Management in Stock Market (August 4, 2020). Available at SSRN: https://ssrn.com/abstract=3666682 or http://dx.doi.org/10.2139/ssrn.3666682

Akihiko Takahashi

University of Tokyo - Faculty of Economics ( email )

7-3-1 Hongo, Bunkyo-ku
Tokyo 113-0033
Japan

Soichiro Takahashi (Contact Author)

University of Tokyo - Graduate School of Economics ( email )

Tokyo
Japan

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