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A Study on Trading Behaviors of Individual Investors After the Pandemic: Focus on the KOSDAQ Market

코로나 19 이후 개인투자자의 투자행태에 관한 연구: 코스닥 시장을 중심으로

  • Kyoung-Woo Sohn (Division of Interdisciplinary Business Studies, Korea National Open University) ;
  • Ji-Yeong Chung (Department of International Economics, Hanshin University)
  • 손경우 (한국방송통신대학교 융합경영학부) ;
  • 정지영 (한신대학교 국제경제학과)
  • Received : 2024.08.30
  • Accepted : 2024.09.25
  • Published : 2024.09.30

Abstract

Purpose - This study aims to explore trading behaviors of individual investors in the KOSDAQ market, thereby explaining the low profitability of individual investors relative to institutional or foreign investors and comparing features specific to the KOSDAQ market with those of the KOSPI market. Design/methodology/approach - KOSDAQ market data, ranging from 2018-01-03 to 2023-12-28, is obtained from the KRX market data system on a daily basis. 12 sub-periods are generated by dividing the entire dataset into 6-month intervals, and within each sub-period, 25 stock-groups are established by the amount of individual investors' net purchases at 4% intervals. The analysis is conducted by comparing major information on trading behaviors across the sub-periods and across the stock-groups. Findings - First, the ratio of individual investors' net purchases shows a negative correlation with the ratio of net purchases of institutional and foreign investors with a strong statistical significance for all sub-periods, and it exhibits negative correlations with the periodic cumulative returns for the most sub-periods. It is also revealed that the low profitability of individual investors might result from the failure of choosing stocks, unlike the case of the KOSPI market where individual investors' low performance is related to the choice of the timing of transactions, rather than the choice of stocks. Research implications or Originality - The empirical results indicate that individual investors in the KOSDAQ market need to be more prudent in choosing stocks than in the KOSPI market, and imply that rediscovering the benefit of the diversification, especially for the KOSDAQ market, might be substantially meaningful.

Keywords

Acknowledgement

이 논문은 2024년도 한신대학교 학술연구비 지원에 의한 논문임.

References

  1. Anderson, A. (2013), "Trading and Under-Diversification", Review of Finance, 17(5), 1699-1741.
  2. Barber, B. M. and T. Odean (2000), "Trading is Hazardous to Your Wealth: The Common Stock Investment Performance of Individual Investors", Journal of Finance, 55(2), 773-806.
  3. Barber, B. M., Y. T. Lee, Y. J. Liu and T. Odean (2009), "Just How Much Do Individual Investors Lose by Trading?", Review of Financial Studies, 22(2), 609-632.
  4. Glaser, M. and M. Weber (2007), "Overconfidence and Trading Volume", The Geneva Risk and Insurance Review, 32, 1-36.
  5. Goetzmann, W. N. and A. Kumar (2008), "Equity Portfolio Diversification", Review of Finance, 12(3), 433-463.
  6. Grinblatt, M. and M. Keloharju (2000), "The Investment Behavior and Performance of Various Investor Types: A Study of Finland's Unique Data Set", Journal of Financial Economics, 55(1), 43-67.
  7. Grinblatt, M. and M. Keloharju (2009), "Sensation Seeking, Overconfidence, and Trading Activity", Journal of Finance, 64(2), 549-578.
  8. Jo, Kyoo-Sung (2007), "Institutional and Individual Investors' Trading Patterns and Price Changes", The Korean Journal of Financial Management, 24(4), 163-199.
  9. Kim, Jong-Hee (2013), "An Analysis on the Impact of Investor's Information Superiority and Negative Feedback Trading on Stock Return", Korean Journal of Financial Studies, 42(4), 667-698.
  10. Kim, Min-Ki (2020), "The Characteristics and Implications of the Recent Net Purchases of Individual Investors", KCMI Issue Report 20-14.
  11. Kim, Min-Ki and Joon-Seok Kim (2021), "Individual Investors during the Pandemic: Trading Behavior and Performance", KCMI Issue Report 21-11.
  12. Kim, Min-Ki and Joon-Seok Kim (2022), "Behavioral Biases and the Trading of Individual Investors in the Korean Stock Markets", KCMI Research Papers 22-02.
  13. Lee, Hyung-Chul (2016), "Institutional Trading, Stock Price Synchronicity, Systematic Risk, and Idiosyncratic Risk", Journal of the Korean Data Analysis Society, 18(6), 3173-3185.
  14. Lee, Kyu-Keum (2014), "The KOSPI Market Flow and the Investment Position among Investors Group", Journal of the Korea Contents Association, 14(3), 374-384.
  15. Moon, Jun-Cheol, Seong-Soo Kang and Jun-Ho Kim (2016), "A Study on the Performance and Investment Behavior Classified by the Type of Investors", Korea International Accounting Review, 65, 155-178.
  16. Pagano, M.S., J. Sedunov and R. Velthuis (2021), "How Did Retail Investors Respond to the Covid-19 Pandemic? The Effect of Robinhood Brokerage Customers on Market Quality", Finance Research Letters, 43, 101946.
  17. Park, Jin-Woo and Dong-Hyuk Hwang (2012), "Short-run Overreaction to Large Stock Price Changes and Investors' Trading Behavior", The Korean Journal of Financial Management, 19(1), 33-55.
  18. Park, Kyung-In (2017), "The Analysis of Investment Strategies and Preferred Firms among Each Type of Investors in KOSDAQ", Korean Journal of Business Administration, 30(12), 2105-2126.
  19. Park, Kyung-In and Ki-Bong Park (2016), "The Analysis of Herding Behavior among Each Type of Investors in KOSDAQ", Journal of the Korean Data Analysis Society, 18(3), 1471-1484.
  20. Park, Kyung-In, Kee-Hong Bae and Jin-Wan Cho (2006), "Analyses on Performance by Different Types of Investors in Korean Stock Market", Korean Journal of Financial Studies, 35(3), 41-76.
  21. Sohn Kyoung-Woo and Ji-Yeong Chung (2024), "A Study on the Trading Behaviors of Individual Investors during and after the COVID-19 Pandemic", Journal of International. Trade and Commerce, 20(1), 213-231.
  22. Welch, I. (2022), "The Wisdom of the Robinhood Crowd", Journal of Finance, 77(3), 1489-1527.
  23. Yi, Ka-Youn and Yoon-Goo Lee (2004), "The Difference in Investment Behavior and Performance by Investor Types", Journal of Industrial Economics and Business, 17(4), 1233-1253.