Do Foreign Investors Destabilize Stock Markets? The Korean Experience in 1997
Hyuk Choe, Bong-Chan Kho, Rene M. Stulz
NBER Working Paper No. 6661
This paper examines the impact of foreign investors on stock returns in Korea from November 30, 1996, to the end of 1997 using trade data. We find strong evidence of positive feedback trading and herding by foreign investors before the period of Korea's economic crisis during the last three months of 1997. The evidence of herding becomes weaker during the crisis period and positive feedback trading by foreign investors disappears. We find no evidence that trades by foreign investors had a destabilizing effect on Korea's stock market over our sample period. In particular, the market adjusted quickly and efficiently to large sales by foreign investors and these sales were not followed by negative abnormal returns amplifying their impact.
Published: Journal of Financial Economics, Vol. 54, no. 2 (October 1999): 227-264.