Manipulation in the VIX?

• 成果类型: Article
• 署名作者: Griffin, John M.; Shams, Amin
• 署名单位: University of Texas System; University of Texas Austin
• 刊物名称: REVIEW OF FINANCIAL STUDIES
• ISSN/ISSBN: 0893-9454
• DOI: 10.1093/rfs/hhx085
• 发表日期: 2018
• 页码: 1377
• 关键词: MARKET MANIPULATION; Financial market; Price discovery; futures

摘要

At the settlement time of the VIX Volatility Index, volume spikes on S&P 500 Index (SPX) options, but only in out-of-the-money options used to calculate the VIX, and more so for options with a higher and discontinuous influence on VIX. We investigate alternative explanations of hedging and coordinated liquidity trading. Tests including those utilizing differences in put and call options, open interest around the settlement, and a similar volatility contract with an entirely different settlement procedure in Europe are inconsistent with these explanations but consistent with market manipulation. Large transient deviations in prices demonstrate the importance of settlement design.