There are various Twitter accounts tracking daily trades (i.e. calls with single day expiry) and correlating them to the news cycle such as acquisitions and other events with significant price movement implications for specific companies. Basically there is insider trading going on daily where the returns are 100-400x in a single trading day. I think the reality is more simple than we tend to think and the SEC just doesn't have the technical chops nor the time to go after all of these.