Comovement in the Chinese CSI 300 Index
Keywords:
comovement, Chinese stock market, CSI 300 Index, beta, index arbitrage, mean reversionAbstract
This study examines whether comovement exists in the Chinese stock market by investigating the relationship between individual stock returns and the CSI 300 Index. Using both univariate and bivariate regression analyses, we test the changes in beta coefficients and R-squared values when a stock is added to or removed from the CSI 300 Index. The empirical results indicate that the overall change in these parameters is statistically insignificant. To further explore this phenomenon, we analyze the potential influence of index arbitrageurs on comovement. The findings remain robust even after accounting for the mean reversion of beta. Therefore, the results provide strong evidence that comovement in the Chinese stock market is statistically significant.
References
1. N. Barberis, and A. Shleifer, "Style investing," Journal of financial Economics, vol. 68, no. 2, pp. 161-199, 2003. doi: 10.1016/s0304-405x(03)00064-3
2. N. Barberis, A. Shleifer, and J. Wurgler, "Comovement," Journal of financial economics, vol. 75, no. 2, pp. 283-317, 2005. doi: 10.1016/j.jfineco.2004.04.003
3. J. B. Baesel, "On the assessment of risk: Some further considerations," The Journal of Finance, vol. 29, no. 5, pp. 1491-1494, 1974. doi: 10.1111/j.1540-6261.1974.tb03130.x
4. M. E. Blume, "Betas and their regression tendencies," The Journal of Finance, vol. 30, no. 3, pp. 785-795, 1975. doi: 10.1111/j.1540-6261.1975.tb01850.x
5. B. S. Lee, and G. Hong, "On the dual characteristics of closed-end country funds," Journal of International Money and Finance, vol. 21, no. 5, pp. 589-618, 2002.
6. B. H. Boyer, "Stylerelated comovement: Fundamentals or labels?," The Journal of Finance, vol. 66, no. 1, pp. 307-332, 2011.
7. H. Chen, V. Singal, and R. F. Whitelaw, "Comovement revisited," Journal of Financial Economics, vol. 121, no. 3, pp. 624-644, 2016. doi: 10.1016/j.jfineco.2016.05.007
8. S. Claessens, and Y. Yafeh, "Comovement of newly added stocks with national market indices: Evidence from around the world," Review of Finance, vol. 17, no. 1, pp. 203-227, 2013. doi: 10.1093/rof/rfs001
9. T. C. Green, and B. H. Hwang, "Price-based return comovement," Journal of financial economics, vol. 93, no. 1, pp. 37-50, 2009.
10. R. Greenwood, "Excess comovement of stock returns: Evidence from cross-sectional variation in Nikkei 225 weights," The review of financial studies, vol. 21, no. 3, pp. 1153-1186, 2008. doi: 10.1093/rfs/hhm052
11. R. C. Klemkosky, and J. D. Martin, "The adjustment of beta forecasts," The journal of Finance, vol. 30, no. 4, pp. 1123-1128, 1975. doi: 10.1111/j.1540-6261.1975.tb01027.x
12. A. Kumar, and C. M. Lee, "Retail investor sentiment and return comovements," The Journal of Finance, vol. 61, no. 5, pp. 2451-2486, 2006. doi: 10.2139/ssrn.502843
13. C. M. Lee, A. Shleifer, and R. H. Thaler, "Investor sentiment and the closedend fund puzzle," The journal of finance, vol. 46, no. 1, pp. 75-109, 1991.
14. Y. Liao, J. Coakley, and N. Kellard, "Index tracking and beta arbitrage effects in comovement," International review of financial analysis, vol. 83, p. 102330, 2022. doi: 10.1016/j.irfa.2022.102330
15. B. Mase, "Comovement in the FTSE 100 index," Applied Financial Economics Letters, vol. 4, no. 1, pp. 9-12, 2008. doi: 10.1080/17446540701222425
16. F. Meyer-Bullerdiek, "The Quality of Blume and Vasicek Betas for forecasting systematic risk: Evidence from a German stock portfolio," Journal of Applied Finance & Banking, vol. 14, no. 6, pp. 1-15, 2024. doi: 10.47260/jafb/1461
17. R. S. Pindyck, and J. J. Rotemberg, "The comovement of stock prices," The quarterly journal of economics, vol. 108, no. 4, pp. 1073-1104, 1993. doi: 10.2307/2118460
18. C. Pirinsky, and Q. Wang, "Does corporate headquarters location matter for stock returns?," The journal of finance, vol. 61, no. 4, pp. 1991-2015, 2006.
19. O. Even-Tov, and N. B. Ozel, "What moves stock prices around credit rating changes?," Review of Accounting Studies, vol. 26, no. 4, pp. 1390-1427, 2021. doi: 10.1007/s11142-020-09573-6
20. A. M. Vijh, "S&P 500 trading strategies and stock betas," The Review of Financial Studies, vol. 7, no. 1, pp. 215-251, 1994.
