We examine the information contained in option trading and short selling using a dynamic VAR model. First, we address whether options and shorts are complements or substitutes. Contrary to existing event studies around option listing introductions, we show short selling and options trading are complements rather than substitutes. Second, we examine which group is relatively more informed. The results indicate that options traders are relatively more informed. Finally, we examine if options are redundant. Our results indicate that options markets are non-redundant.
Review of Quantitative Finance and Accounting – Springer Journals
Published: May 15, 2015
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