The Information Content of Option Implied Volatility Surrounding the 1997 Hong Kong Stock Market Crash

Author(s):  
Joseph K. W. Fung
2020 ◽  
Vol 27 (2) ◽  
pp. 209-222 ◽  
Author(s):  
Johnny K.H. Kwok

PurposeThe purpose of this paper is to study whether switching trading venues create value in the Hong Kong stock market.Design/methodology/approachBy using an event study, the paper investigates the abnormal returns (AR) earned by firms in the Growth Enterprise Market (GEM) relating to switching to the Main Board (MB). Two measures, turnover of the stock and Amihud’s (2002) illiquidity ratio, are used to examine the liquidity effects.FindingsThe switch is accompanied by a long-term increase in stock price for low liquidity firms only. High liquidity firms underperform with persistent negative excess returns after switching, while the transient negative excess returns in low liquidity firms reverse gradually. The results further show a significant increase in trading activity for low liquidity firms following the switch, while there is a significant decline in both trading activity and liquidity in firms with high liquidity. The overall results suggest that moving from GEM to the MB is beneficial to low liquidity firms but detrimental to high liquidity firms.Originality/valueThis study is the first to investigate whether moving from GEM to the MB creates value in the Hong Kong stock market.


2015 ◽  
Vol 07 (03) ◽  
pp. 36-45
Author(s):  
Jing WAN

The Stock Connect scheme launched on 17 November 2014 was the first mutual market access between mainland China and Hong Kong stock markets. It is the biggest move ever in the opening up of the capital market. Experiences accumulated will be of great value to mainland regulators who will decide on how these experiences could be utilised for China’s future opening up of its capital markets and for accelerating renminbi internationalisation.


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