“…Our findings contribute to the growing body of literature that reports the abnormal behavior of returns, volume, open interest and implied volatility spreads/skew in stock and options markets around major corporate announcements. For example, around earnings releases (e.g., Bohmann et al., 2019a; Lu & Ray, 2016; Tsai, 2014; Udpa, 1996), mergers and acquisitions (e.g., Bugeja et al., 2015; Cao et al., 2005; Chan et al., 2015), repurchases (e.g., Hao, 2016), stock splits (e.g., Chern et al., 2008), management forecast disclosures (e.g., Cairney & Swisher, 2004), bankruptcies (e.g., Cheng et al., 2018) and large price changes (e.g., Patel & Michayluk, 2016b; Savor, 2012). Holistically, the literature suggests informed trading in options markets is a pervasive issue.…”