Investor sentiment under representativeness heuristic: The case of Tehran Stock Exchange

Subject Areas : Journal of Investment Knowledge

Mehdi Rezayati ¹ , Kazem Chavoshi ² , Mohsen Sohrabi araghi ³

1 - MBA student (Major: finance) at university of Economic Scienses
2 - Associate Professor at University Of Economic Scienses
3 - Associate Professor of Allameh Tabataba'i University

Received: 2016-03-15 Accepted : 2016-05-03 Published : 2016-09-22

Keywords: Behavioral Finance, investor sentiment, Representativeness Heuristic, Overreaction, ARMS Index,

Abstract :

Too many researches, in spite of standard finance show that investors are not completely rational and investor sentiment plays a key role in prediction of their behavior. Behavioral finance claims that agents, under the psychological phenomena's, deviate from rational behavior. In this research we have investigated the effects of unexpected earnings on investor sentiment, under the representativeness heuristics phenomena. Investor sentiment is measured by ARMS index and the research methodology is based on Granger causality test and also event study. Data's are market and accounting data of Tehran stock exchange listed companies, between the years 2001 to 2013. Results indicate that investor sentiment is predictable by past unexpected earning's.

References:

*       حیدر پور فرزانه، تاری وردی یداله، محرابی مریم. تاثیر گرایش های احساسی سرمایه گذاران بر بازده سهام.  فصلنامه علمی پژوهشی دانش مالی تحلیل اوراق بهادار ، سال ششم ، شماره هفدهم. 1391

*       راسخی سعید. آزمون فرضیه کارایی بازار ارز: مطالعه موردی ایران.  نشریه اقتصاد

*       پولی، مالی، شماره 4 . 1391

*       راعی، رضا؛ فلاح پور، سعید. مالیه رفتاری، رویکردی متفاوت در حوزه مالی . نشریه

*       تحقیقات مالی. 1383

*       رهنمای رودپشتی فریدون و همکاران . تاثیر سوگیری شناختی سرمایه گذاران بورس اوراق بهادار تهران بر ارزشیابی سهام. دانش مالی تحلیل اوراق بهادار، شماره 13. 1391 .

*       سعیدی، علی؛ فراهانیان، جواد . مبانی اقتصاد و مالی رفتاری. . شرکت اطلاع‌رسانی و خدمات بورس:1390

*       سعیدی علی، نیکومرام، هاشم.اندازه گیری عکس العمل رفتاری سرمایه گذاران در بازار سهام. جستارهای اقتصادی، شماره 9. 1387

*       Barberis,N.Tahler,R .a survay of bahavioral finance. Elsevier Science. 2003

*       Baker, M., Wurgler, J. Investor sentiment in the stock market. Journal of Economic Perspectives .2007

*       Ball, R., & Brown, P. An empirical evaluation of accounting income numbers. Journal of accounting research, 159-178.1968

*       Brown, G. W., & Cliff, M. T. Investor sentiment and the near-term stock market. Journal of Empirical Finance, 11(1), 1-27.2004

*       brown.. Volatility, sentiment, and noise traders. Financial Analysts Journal 55, 82 – 90.1999

*       Bussaidi,R .Representativeness Heuristic, Investor Sentiment and Overreaction to Accounting Earnings: The Case of the Tunisian Stock Market. Procedia. 2013

*       Chen, Hailiang, et al. Sentiment revealed in social media and its effect on the stock market. Statistical Signal Processing Workshop (SSP), IEEE. IEEE, 2011.

*       Hengelbrock .J , Theissen. E , Westheid. CH.Market Response to Investor Sentiment. CFR working paper.2010

*       Bondt, Werner FM, and Richard Thaler. Does the stock market overreact?. The Journal of finance 40.3 793-805.1985

*       Long Jr, J. B. The market valuation of cash dividends: A case to consider. Journal of Financial Economics, 6(2), 235-264.1987

*       Shleifer, A. Inefficient markets: An introduction to behavioral finance. Oxford university press.2000

*       Yuan, K. Zheng, L. Qiaoqiao, ZH.Are investors Moonstruk? Lounar Phases and stock Return. Journal of Empirical Finance.2001

*      Wang, Y. H., Keswani, A., & Taylor, S. JThe relationships between sentiment, returns and volatility. International Journal of Forecasting, 22(1), 109-123.2006