On Jump Processes in the Foreign Exchange and Stock Markets

• 成果类型: Article
• 署名作者: Jorion, Philippe
• 署名单位: Columbia University; Northwestern University
• 刊物名称: REVIEW OF FINANCIAL STUDIES
• ISSN/ISSBN: 0893-9454
• DOI: 10.1093/rfs/1.4.427
• 发表日期: 1988
• 页码: 427
• 关键词: PRICE CHANGES; rates; RISK; BEHAVIOR; options; variance; returns; models

摘要

This article investigates the existence of discontinuities in the sample path of exchange rates and of a stock market index. Maximum-likelihood estimation of a mixed jump-diffusion process reveals that exchange rates exhibit systematic discontinuities, even after allowing for conditional beteroskedasticity in the diffusion process. The results are much more significant in the foreign exchange market than in the stock market, which suggests differences in the structure of these markets. Finally, this jump component is shown to explain some of the empirically observed mispricings in the currency options market.