Steve Cohen.
I didn't know he made it first as day trader. Just knew he ran a fund.
https://www.sec.gov/litigation/admin/2013/ia-3634.pdf
Do you think it was overlooked by Cohen? You have trusted employees, everyone trying to make more, not enough time in 24 hours to be checking people you trust.
And how would you even be able to check and not do again in future?