Discretionary government intervention and the mispricing of index futures

Paul Draper and Joseph K. W. Fung

Journal of Futures Markets, 2003, vol. 23, issue 12, 1159-1189

Abstract: This article examines how and to what extent direct market intervention by the Hong Kong government in both the stock and futures markets affected the pricing relationship between the Hang Seng Index futures and the cash index during the period of the Asian financial crisis. The study avoids infrequent trading and nonexecution problems by using tradeable bid and offer quotes for the constituent stocks of the index. The results show that arbitrage efficiency was impeded during, and in the immediate aftermath of, the intervention. The findings suggest that discretionary government action introduces an additional risk factor for arbitrageurs that continues to disrupt normal market processes even after the government ceases to intervene. The continued disruption following the government's actions in the market also stems from a poorly developed stock loan market that impedes short selling, as well as a lack of liquidity in the market. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:1159–1189, 2003

Date: 2003
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