Does the VIX Need Fixing? Sure Looks That Way John M. Griffin – Bloomberg Last week, the Chicago Board Options Exchange (CBOE) responded to a research report into manipulation of the monthly settlement of the VIX, sometimes referred to as the stock market's fear index, and attempted to assure participants that the process was not rigged. "The academic paper's analysis and conclusions are based upon a fundamental misunderstanding about how VIX derivatives are traded and settled," the CBOE wrote. I was an author of the research paper. The CBOE's most recent response has left my "fundamental misunderstanding" still very much unresolved. /jlne.ws/2w2IMLJ