The Arbitrage Efficiency of the Nikkei 225 Options Market: A Put-Call Parity Analysis

Steven Li
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Steven Li: University of South Australia, Division of Business (E-mail: s.li@qut.edu.au)

Monetary and Economic Studies, 2006, vol. 24, issue 2, 33-54

Abstract: This paper is concerned with arbitrage efficiency of the Nikkei index option contracts traded on the Osaka Securities Exchange ( OSE) within the put-call parity (PCP) framework. A thorough ex post analysis is first carried out. The results reveal a modest number of violations with 2.74 percent of the sample breaching the PCP equation and an average arbitrage profit of 22.61 index points for OSE member firms during the sample period (2003?05). Ex ante tests are then conducted whereby ex post profitable arbitrage strategies, signified by the matched put and call contracts, are executed with lags of one minute and three minutes. The ex ante results reveal that the number of profitable arbitrage opportunities and the average profit are both reduced significantly with an execution lag. In addition, regression analysis is used to provide further evidence about the PCP and arbitrage profitability. Overall, there is no strong evidence found against the efficiency of the Nikkei 225 options market, although arbitrage opportunities do exist occasionally.

Keywords: Put-call parity; Market efficiency; Nikkei 225 options (search for similar items in EconPapers)
JEL-codes: G13 G14 (search for similar items in EconPapers)
Date: 2006
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Citations: View citations in EconPapers (2)

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