I'm not even sure you need sophisticated data analysis. The two people who did the biggest trades: - weren't involved in the finance industry (a school teache

I'm not even sure you need sophisticated data analysis. The two people who did the biggest trades: - weren't involved in the finance industry (a school teacher and an equipment leasing business) - had never traded options before - did the brokerage know-your-client process to get approved for options 1-2 weeks before quarterly earnings came out - profited $884,000 and $175,000 A SQL query looking for people who made > 100K within 2 weeks of opening their account would catch these people, and probably have relatively few false positives.