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Chinese Journal of Management Science ›› 2023, Vol. 31 ›› Issue (12): 79-86.doi: 10.16381/j.cnki.issn1003-207x.2020.1090

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An Interest Rate Term Structure Model Based on the Hypothesis of Irrational Traders: A Theoretical and Empirical Study

Hua CHEN1(),Xiao-ya ZHENG2,Rong CHEN3,Nai-ju SHI4   

  1. 1.China Securities Depository and Clearing Corporation Limited, Beijing 100800, China
    2.Postal Doctoral Station of Management Science and Enigneering, Fudan University, Shanghai 200433, China
    3.Fuzhou Provincial Branch, The People’s Bank of China, Fuzhou 350003, China
    4.Dayou Strategy Think-tank, Renmin Business School, Beijing 100872, China
  • Received:2020-06-08 Revised:2020-09-25 Online:2023-12-15 Published:2024-01-06
  • Contact: Hua CHEN E-mail:83258975@qq.com

Abstract:

The efficient market hypothesis based on rational expectation hypothesis holds that when the market is completely efficient, asset prices completely reflect all information and obey martingale process. However, a large number of empirical studies show that many anomalies of interest rates are actually the expression of irrational sentiment in the market. The “failure” of the efficient market hypothesis shakes the rational expectation assumption of the term structure model of interest rates. Traders are divided into noise traders who represent irrational trading and information traders who represent rational trading, and a term structure model of interest rates is established based on traders' irrational assumption. Taking Chinese market as a sample, the irrational fluctuation degree and influencing factors of the weighted interest rate of pledge style repo and that of exchange repo are studied. The results show that in the same market, the longer the term of interest rate is, the higher the degree of irrational volatility is; the irrational volatility of exchange rate in the same period is higher than that in the inter-bank market; “interest rate duration”, “regulatory system” and “net amount of operating funds in the open market of the central bank” are not the factors leading to the irrational fluctuation of China's interest rates, and the “investor heterogeneity” factor has an impact on the irrational fluctuation of China's interest rates Movement has a significant effect. The research shows that: the open market operation has not played a role in restraining the irrational fluctuation of interest rate, so how to restrain the irrational fluctuation of interest rate through better system construction and policy operation should be the key policy consideration; in addition, noise trading and investor heterogeneity are important factors leading to irrational interest rate fluctuations, and the central bank should strengthen the management of interest rate expectation in the money market to restrain interest rate The rate fluctuates irrationally.

Key words: trader heterogeneity, irrationality, interest rates term structure model, noise trading

CLC Number: